SM7E-1H32U1(EC )

mfrink

Google Docs
Google Drive
Download [pdf]

File Info : application/pdf, 455 Pages, 6.61MB

ENGINE

EC A

SECTION

ENGINE CONTROL SYSTEM C

CONTENTS

QR25DE

IDLE AIR VOLUME LEARNING : Special Repair

Requirement ...........................................................16

BASIC INSPECTION ................................... 7
MIXTURE RATIO SELF-LEARNING VALUE
DIAGNOSIS AND REPAIR WORKFLOW ......... 7 CLEAR ......................................................................18 G

Work Flow ................................................................7 MIXTURE RATIO SELF-LEARNING VALUE

Diagnostic Work Sheet .............................................9

CLEAR : Description ...............................................18

MIXTURE RATIO SELF-LEARNING VALUE

INSPECTION AND ADJUSTMENT ...................11 CLEAR : Special Repair Requirement ....................18

BASIC INSPECTION ................................................11 FUNCTION DIAGNOSIS .............................19
BASIC INSPECTION : Special Repair Require-

ment ....................................................................... 11 ENGINE CONTROL SYSTEM ..........................19

System Diagram ....................................................19

ADDITIONAL SERVICE WHEN REPLACING

System Description .................................................19 J

CONTROL UNIT ....................................................... 13

Component Parts Location ...................................20

ADDITIONAL SERVICE WHEN REPLACING

Component Description ..........................................25

CONTROL UNIT : Description ............................... 14

ADDITIONAL SERVICE WHEN REPLACING

MULTIPORT FUEL INJECTION SYSTEM .......27 K

CONTROL UNIT : Special Repair Requirement .... 14

System Diagram ....................................................27

IDLE SPEED ............................................................. 14 IDLE SPEED : Description ..................................... 14 IDLE SPEED : Special Repair Requirement .......... 14

System Description .................................................27 Component Parts Location ...................................30 L Component Description ..........................................35

IGNITION TIMING ..................................................... 14 ELECTRIC IGNITION SYSTEM ........................37 M

IGNITION TIMING : Description ............................. 14

System Diagram ....................................................37

IGNITION TIMING : Special Repair Requirement.... 14

System Description .................................................37 Component Parts Location ...................................38

VIN REGISTRATION ................................................ 15

Component Description ..........................................43 N

VIN REGISTRATION : Description ........................ 15

VIN REGISTRATION : Special Repair Require-

AUTOMATIC SPEED CONTROL DEVICE

ment ....................................................................... 15 (ASCD) ..............................................................45 O

System Diagram .....................................................45

THROTTLE VALVE CLOSED POSITION LEARN-

System Description .................................................45

ING ............................................................................ 15 THROTTLE VALVE CLOSED POSITION

Component Parts Location ...................................47 Component Description .........................................57

LEARNING : Description ........................................ 15

THROTTLE VALVE CLOSED POSITION

CAN COMMUNICATION ...................................58

LEARNING : Special Repair Requirement ............. 15

System Description .................................................58

IDLE AIR VOLUME LEARNING ............................... 16 COOLING FAN CONTROL ...............................59

IDLE AIR VOLUME LEARNING : Description ........ 16

System Diagram .....................................................59

Revision: May 2007

EC-1

2007 Altima Hybrid

System Description ................................................ 59 Component Parts Location .................................. 60 Component Description ......................................... 65
EVAPORATIVE EMISSION SYSTEM .............. 67
System Diagram .................................................... 67 System Description ................................................ 69 Component Parts Location .................................. 71 Component Description ........................................ 76
INTAKE VALVE TIMING CONTROL ................ 78
System Diagram .................................................... 78 System Description ................................................ 78 Component Parts Location .................................. 79 Component Description ......................................... 84
ON BOARD DIAGNOSTIC (OBD) SYSTEM .... 86
Diagnosis Description ............................................ 86 CONSULT-III Function .......................................... 98 Diagnosis Tool Function .....................................106
COMPONENT DIAGNOSIS ......................109
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ............................................................ 109
Description ............................................................109 Component Function Check .................................109 Diagnosis Procedure ............................................110
POWER SUPPLY AND GROUND CIRCUIT .. 118
Diagnosis Procedure ............................................118
U0129, U1022 CAN COMM CIRCUIT ............ 122
DTC Logic .............................................................122 Diagnosis Procedure ............................................122
U0293, U1020 CAN COMM CIRCUIT ............ 123
DTC Logic .............................................................123 Diagnosis Procedure ............................................123
U0400, U1021 CAN COMM DATA ................. 124
DTC Logic .............................................................124 Diagnosis Procedure ............................................124
U0418, U1023 CAN COMM DATA ................. 126
DTC Logic .............................................................126 Diagnosis Procedure ............................................126
U1000, U1001 CAN COMM CIRCUIT ............ 128
Description ............................................................128 DTC Logic .............................................................128 Diagnosis Procedure ............................................128
U1010 CONTROL UNIT (CAN) ...................... 129
Description ............................................................129 DTC Logic .............................................................129 Diagnosis Procedure ............................................129
U1011 CONTROL UNIT (CAN) ...................... 130
DTC Logic .............................................................130 Diagnosis Procedure ............................................130

P0011 IVT CONTROL .....................................131
DTC Logic ............................................................ 131 Diagnosis Procedure ............................................ 132 Component Inspection ......................................... 133
P0031, P0032 A/F SENSOR 1 HEATER .........135
Description ........................................................... 135 DTC Logic ............................................................ 135 Diagnosis Procedure ............................................ 135 Component Inspection ......................................... 137
P0037, P0038 HO2S2 HEATER ......................138
Description ........................................................... 138 DTC Logic ............................................................ 138 Diagnosis Procedure ............................................ 139 Component Inspection ......................................... 140
P0043, P0044 HO2S3 HEATER ......................141
Description ........................................................... 141 DTC Logic ............................................................ 141 Diagnosis Procedure ............................................ 142 Component Inspection ......................................... 143
P0075 IVT CONTROL SOLENOID VALVE .....144
Description ........................................................... 144 DTC Logic ............................................................ 144 Diagnosis Procedure ............................................ 144 Component Inspection ......................................... 145
P0101 MAF SENSOR ......................................147
Description ........................................................... 147 DTC Logic ............................................................ 147 Component Function Check ................................ 148 Diagnosis Procedure ............................................ 149 Component Inspection ......................................... 150
P0102, P0103 MAF SENSOR .........................155
Description ........................................................... 155 DTC Logic ............................................................ 155 Diagnosis Procedure ............................................ 156 Component Inspection ......................................... 157
P0112, P0113 IAT SENSOR ...........................162
Description ........................................................... 162 DTC Logic ............................................................ 162 Diagnosis Procedure ............................................ 163 Component Inspection ......................................... 163
P0117, P0118 ECT SENSOR ..........................165
Description ........................................................... 165 DTC Logic ............................................................ 165 Diagnosis Procedure ............................................ 166 Component Inspection ......................................... 166
P0122, P0123 TP SENSOR .............................168
Description ........................................................... 168 DTC Logic ............................................................ 168 Diagnosis Procedure ............................................ 168 Component Inspection ......................................... 170 Special Repair Requirement ................................ 170

Revision: May 2007

EC-2

2007 Altima Hybrid

P0125 ECT SENSOR ...................................... 171
Description ........................................................... 171 DTC Logic ............................................................ 171 Diagnosis Procedure ............................................ 172 Component Inspection ......................................... 172
P0127 IAT SENSOR ........................................ 174
Description ........................................................... 174 DTC Logic ............................................................ 174 Diagnosis Procedure ............................................ 175 Component Inspection ......................................... 175
P0128 THERMOSTAT FUNCTION ................. 176
DTC Logic ............................................................ 176 Diagnosis Procedure ............................................ 176 Component Inspection ......................................... 177
P0130 A/F SENSOR 1 ..................................... 178
Description ........................................................... 178 DTC Logic ............................................................ 178 Component Function Check ................................. 180 Diagnosis Procedure ............................................ 180
P0131 A/F SENSOR 1 ..................................... 182
Description ........................................................... 182 DTC Logic ............................................................ 182 Diagnosis Procedure ............................................ 183
P0132 A/F SENSOR 1 ..................................... 185
Description ........................................................... 185 DTC Logic ............................................................ 185 Diagnosis Procedure ............................................ 186
P0133 A/F SENSOR 1 ..................................... 188
Description ........................................................... 188 DTC Logic ............................................................ 188 Diagnosis Procedure ............................................ 189
P0137 HO2S2 .................................................. 192
Description ........................................................... 192 DTC Logic ............................................................ 192 Component Function Check ................................. 193 Diagnosis Procedure ............................................ 194 Component Inspection ......................................... 195
P0138 HO2S2 .................................................. 197
Description ........................................................... 197 DTC Logic ............................................................ 197 Component Function Check ................................. 199 Diagnosis Procedure ............................................ 199 Component Inspection ......................................... 202
P0139 HO2S2 .................................................. 204
Description ........................................................... 204 DTC Logic ............................................................ 204 Component Function Check ................................. 205 Diagnosis Procedure ............................................ 206 Component Inspection ......................................... 207
P0143 HO2S3 .................................................. 209
Description ........................................................... 209

DTC Logic .............................................................209 Diagnosis Procedure ............................................210 A

P0144 HO2S3 .................................................. 212
Description ............................................................212 DTC Logic .............................................................212 EC Diagnosis Procedure ............................................213

P0145 HO2S3 .................................................. 215 C
Description ............................................................215 DTC Logic .............................................................215 Diagnosis Procedure ............................................216 D
P0146 HO2S3 .................................................. 218
Description ............................................................218 DTC Logic .............................................................218 E Diagnosis Procedure ............................................219

P0171 FUEL INJECTION SYSTEM FUNCTION ................................................................ 221 F
DTC Logic .............................................................221
Diagnosis Procedure ............................................222 G
P0172 FUEL INJECTION SYSTEM FUNC-
TION ................................................................ 225
DTC Logic .............................................................225 H Diagnosis Procedure ............................................226

P0181 FTT SENSOR ....................................... 229
Description ............................................................229 I DTC Logic .............................................................229 Diagnosis Procedure ............................................230 Component Inspection ..........................................231 J

P0182, P0183 FTT SENSOR .......................... 232

Description ............................................................232 DTC Logic .............................................................232 K

Diagnosis Procedure ............................................232

Component Inspection ..........................................234

L
P0201, P0202, P0203, P0204 FUEL INJEC-

TOR ................................................................. 235

Description ............................................................235 DTC Logic .............................................................235

Diagnosis Procedure ............................................235

Component Inspection ..........................................236 N
P0222, P0223 TP SENSOR ............................ 238

Description ............................................................238

DTC Logic .............................................................238 O Diagnosis Procedure ............................................238

Component Inspection ..........................................240

Special Repair Requirement .................................240 P

P0300, P0301, P0302, P0303, P0304 MIS-

FIRE ................................................................. 241

DTC Logic .............................................................241

Diagnosis Procedure ............................................242

P0327, P0328 KS ............................................ 247
Description ............................................................247

Revision: May 2007

EC-3

2007 Altima Hybrid

DTC Logic .............................................................247 Diagnosis Procedure ............................................247 Component Inspection ..........................................248
P0335 CKP SENSOR (POS) .......................... 249
Description ............................................................249 DTC Logic .............................................................249 Diagnosis Procedure ............................................250 Component Inspection ..........................................251
P0340 CMP SENSOR (PHASE) ..................... 253
Description ............................................................253 DTC Logic .............................................................253 Diagnosis Procedure ............................................254 Component Inspection ..........................................255
P0420 THREE WAY CATALYST FUNCTION. 257
DTC Logic .............................................................257 Diagnosis Procedure ............................................258
P0441 EVAP CONTROL SYSTEM ................. 261
DTC Logic .............................................................261 Component Function Check .................................262 Diagnosis Procedure ............................................263
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE ...................... 266
Description ............................................................266 DTC Logic .............................................................266 Diagnosis Procedure ............................................267 Component Inspection ..........................................269
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE ..... 271
Description ............................................................271 DTC Logic .............................................................271 Diagnosis Procedure ............................................271 Component Inspection ..........................................273
P0447 EVAP CANISTER VENT CONTROL VALVE ............................................................ 274
Description ............................................................274 DTC Logic .............................................................274 Diagnosis Procedure ............................................274 Component Inspection ..........................................276
P0448 EVAP CANISTER VENT CONTROL VALVE ............................................................ 278
Description ............................................................278 DTC Logic .............................................................278 Diagnosis Procedure ............................................278 Component Inspection ..........................................280
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR .............................................. 282
Description ............................................................282 DTC Logic .............................................................282 Diagnosis Procedure ............................................282 Component Inspection ..........................................284

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR ...............................................285
Description ........................................................... 285 DTC Logic ............................................................ 285 Diagnosis Procedure ............................................ 286 Component Inspection ......................................... 288
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR ...............................................289
Description ........................................................... 289 DTC Logic ............................................................ 289 Diagnosis Procedure ............................................ 290 Component Inspection ......................................... 293
P0456 EVAP CONTROL SYSTEM .................294
DTC Logic ............................................................ 294 Diagnosis Procedure ............................................ 295 Component Inspection ......................................... 299
P0460 FUEL LEVEL SENSOR ........................300
Description ........................................................... 300 DTC Logic ............................................................ 300 Diagnosis Procedure ............................................ 300
P0461 FUEL LEVEL SENSOR ........................301
Description ........................................................... 301 DTC Logic ............................................................ 301 Component Function Check ................................ 301 Diagnosis Procedure ............................................ 302
P0462, P0463 FUEL LEVEL SENSOR ...........303
Description ........................................................... 303 DTC Logic ............................................................ 303 Diagnosis Procedure ............................................ 303
P0500 VSS .......................................................305
Description ........................................................... 305 DTC Logic ............................................................ 305 Diagnosis Procedure ............................................ 305
P0506 ISC SYSTEM ........................................306
Description ........................................................... 306 DTC Logic ............................................................ 306 Diagnosis Procedure ............................................ 306
P0507 ISC SYSTEM ........................................308
Description ........................................................... 308 DTC Logic ............................................................ 308 Diagnosis Procedure ............................................ 308
P0603 ECM POWER SUPPLY ........................310
Description ........................................................... 310 DTC Logic ............................................................ 310 Diagnosis Procedure ............................................ 310
P0605 ECM ......................................................312
Description ........................................................... 312 DTC Logic ............................................................ 312 Diagnosis Procedure ............................................ 313
P0643 SENSOR POWER SUPPLY .................314

Revision: May 2007

EC-4

2007 Altima Hybrid

DTC Logic ............................................................ 314 Diagnosis Procedure ............................................ 314 Special Repair Requirement ................................ 315
P0AC4 HV MIL ON REQUEST ....................... 316
Description ........................................................... 316
P1148 CLOSED LOOP CONTROL ................. 317
DTC Logic ............................................................ 317
P1195 ENGINE DOES NOT START ............... 318
DTC Logic ............................................................ 318 Diagnosis Procedure ............................................ 318
P1196 POOR ENGINE POWER ...................... 321
DTC Logic ............................................................ 321 Diagnosis Procedure ............................................ 322
P1197 FUEL RUN OUT ................................... 324
DTC Logic ............................................................ 324
P1217 ENGINE OVER TEMPERATURE ........ 325
DTC Logic ............................................................ 325 Component Function Check ................................. 325 Diagnosis Procedure ............................................ 326
P1225 TP SENSOR ......................................... 329
Description ........................................................... 329 DTC Logic ............................................................ 329 Diagnosis Procedure ............................................ 329 Special Repair Requirement ................................ 330
P1226 TP SENSOR ......................................... 331
Description ........................................................... 331 DTC Logic ............................................................ 331 Diagnosis Procedure ............................................ 331 Special Repair Requirement ................................ 332
P1564 ASCD STEERING SWITCH ................. 333
Description ........................................................... 333 DTC Logic ............................................................ 333 Diagnosis Procedure ............................................ 333 Component Inspection ......................................... 335
P1572 ASCD BRAKE SWITCH ...................... 336
Description ........................................................... 336 DTC Logic ............................................................ 336 Diagnosis Procedure ............................................ 337 Component Inspection (ASCD Brake Switch) ...... 340 Component Inspection (Stop Lamp Switch) ......... 340
P1574 ASCD VEHICLE SPEED SENSOR ..... 342
Description ........................................................... 342 DTC Logic ............................................................ 342 Diagnosis Procedure ............................................ 342
P1805 BRAKE SWITCH .................................. 344
Description ........................................................... 344 DTC Logic ............................................................ 344 Diagnosis Procedure ............................................ 344 Component Inspection (Stop Lamp Switch) ......... 345

P2100, P2103 THROTTLE CONTROL MOTOR RELAY .................................................... 347 A
Description ............................................................347 DTC Logic .............................................................347 Diagnosis Procedure ............................................347 EC
P2101 ELECTRIC THROTTLE CONTROL FUNCTION ...................................................... 349
Description ............................................................349 C DTC Logic .............................................................349 Diagnosis Procedure ............................................349 Component Inspection ..........................................351 D Special Repair Requirement .................................352

P2118 THROTTLE CONTROL MOTOR ......... 353
Description ............................................................353

DTC Logic .............................................................353

Diagnosis Procedure ............................................353

Component Inspection ..........................................354 F

Special Repair Requirement .................................354

P2119 ELECTRIC THROTTLE CONTROL ACTUATOR ..................................................... 356

Description ............................................................356

DTC Logic .............................................................356 Diagnosis Procedure ............................................357 H

Special Repair Requirement .................................357

P2135 TP SENSOR ......................................... 358 I
Description ............................................................358

DTC Logic .............................................................358

Diagnosis Procedure ............................................358 Component Inspection ..........................................360

Special Repair Requirement .................................360

P2423 HC ADSORPTION CATALYST FUNC-

TION ................................................................ 361

DTC Logic .............................................................361

Diagnosis Procedure ............................................362 L

P2A00 A/F SENSOR 1 .................................... 365
Description ............................................................365 DTC Logic .............................................................365 M
Diagnosis Procedure ............................................366

ASCD BRAKE SWITCH .................................. 369 N
Description ............................................................369 Component Function Check .................................369 Diagnosis Procedure ............................................369 Component Inspection (ASCD Brake Switch) ......370 O

COOLING FAN ................................................ 372
Description ............................................................372 P Component Function Check .................................372 Diagnosis Procedure ............................................372 Component Inspection (Cooling Fan Motor) .........375 Component Inspection (Cooling Fan Relay) .........375

FUEL PUMP .................................................... 376
Description ............................................................376 Component Function Check .................................376

Revision: May 2007

EC-5

2007 Altima Hybrid

Diagnosis Procedure ............................................376 Component Inspection (Fuel Pump) .....................379 Component Inspection (Condenser-1) .................379
IGNITION SIGNAL .......................................... 380
Description ............................................................380 Component Function Check .................................380 Diagnosis Procedure ............................................380 Component Inspection (Ignition Coil with Power Transistor) ............................................................383 Component Inspection (Condenser-2) .................384
MALFUNCTION INDICATOR LAMP .............. 385
Description ............................................................385 Component Function Check .................................385 Diagnosis Procedure ............................................385
ON BOARD REFUELING VAPOR RECOVERY (ORVR) ................................................... 386
Description ............................................................386 Component Function Check .................................386 Diagnosis Procedure ............................................386 Component Inspection ..........................................389
POSITIVE CRANKCASE VENTILATION ....... 391
Description ............................................................391 Component Inspection ..........................................391
REFRIGERANT PRESSURE SENSOR ......... 392
Description ............................................................392 Component Function Check .................................392 Diagnosis Procedure ............................................392
ECU DIAGNOSIS ......................................394
ECM ................................................................ 394
Reference Value ...................................................394 Wiring Diagram -- ENGINE CONTROL SYSTEM -- ..........................................................................405 Fail Safe ...............................................................428 DTC Inspection Priority Chart ............................430 DTC Index ............................................................431 How to Set SRT Code .......................................434 Test Value and Test Limit ..................................436
SYMPTOM DIAGNOSIS ...........................439

ENGINE CONTROL SYSTEM SYMPTOMS ...439
Symptom Table .................................................... 439
NORMAL OPERATING CONDITION ..............443
Description ........................................................... 443
PRECAUTION ...........................................444
PRECAUTIONS ...............................................444
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" .............................................................. 444 Precaution for Procedure without Cowl Top Cover. 444 Precautions For Xenon Headlamp Service .......... 444 On Board Diagnostic (OBD) System of Engine ... 445 General Precautions ............................................ 445
PREPARATION .........................................448
PREPARATION ...............................................448
Special Service Tools .......................................... 448 Commercial Service Tools ................................... 448
ON-VEHICLE MAINTENANCE .................450
FUEL PRESSURE ...........................................450
Inspection ............................................................. 450
EVAP LEAK CHECK .......................................451
Inspection ............................................................. 451
ON-VEHICLE REPAIR ..............................453
EVAP CANISTER ............................................453
Exploded View ..................................................... 453 Removal and Installation ...................................... 453 Inspection ............................................................. 454
SERVICE DATA AND SPECIFICATIONS (SDS) .........................................................455
SERVICE DATA AND SPECIFICATIONS (SDS) ...............................................................455
Idle Speed ............................................................ 455 Ignition Timing ...................................................... 455 Calculated Load Value ......................................... 455 Mass Air Flow Sensor .......................................... 455

Revision: May 2007

EC-6

2007 Altima Hybrid

DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE

[QR25DE]
A EC INFOID:0000000001502794
C D E F G H I J K L M N O P

DETAILED FLOW
Revision: May 2007

EC-7

JMBIA0078GB
2007 Altima Hybrid

DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
1.GET INFORMATION FOR SYMPTOM

[QR25DE]

Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the "Diagnostic Work Sheet". (Refer to EC-9, "Diagnostic Work Sheet".)

>> GO TO 2.
2.CHECK DTC
1. Check DTC. 2. Perform the following procedure if DTC is displayed. - Record DTC and freeze frame data. (Print them out with CONSULT-III or GST.) - Erase DTC. (Refer to EC-86, "Diagnosis Description".) - Study the relationship between the cause detected by DTC and the symptom described by the customer.
(Symptom Table is useful. Refer to EC-439, "Symptom Table".) 3. Check related service bulletins for information.
Is any symptom described and is any DTC detected?
Symptom is described, DTC is detected>>GO TO 3. Symptom is described, DTC is not detected>>GO TO 4. Symptom is not described, DTC is detected>>GO TO 5.
3.CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer (except MIL ON). Also study the normal operation and fail safe related to the symptom. Refer to EC-443, "Description" and EC428, "Fail Safe". Diagnosis Work Sheet is useful to verify the incident. Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.
4.CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer. Also study the normal operation and fail safe related to the symptom. Refer to EC-443, "Description" and EC428, "Fail Safe". Diagnosis Work Sheet is useful to verify the incident. Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.
5.PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC CONFIRMATION PROCEDURE for the displayed DTC, and then make sure that DTC is detected again. If two or more DTCs are detected, refer to EC-430, "DTC Inspection Priority Chart" and determine trouble diagnosis order. NOTE: · Freeze frame data is useful if the DTC is not detected. · Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service
Manual. This simplified check procedure is an effective alternative though DTC cannot be detected during this check. If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIRMATION PROCEDURE.
Is DTC detected?
YES >> GO TO 10. NO >> Check according to EC-431, "DTC Index".
6.PERFORM BASIC INSPECTION
Perform EC-11, "BASIC INSPECTION : Special Repair Requirement".
Do you have CONSULT-III?

Revision: May 2007

EC-8

2007 Altima Hybrid

DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
YES >> GO TO 7. NO >> GO TO 9.
7.PERFORM SPEC IN DATA MONITOR MODE

[QR25DE]
A

With CONSULT-III Make sure that "MAS A/F SE-B1", "B/FUEL SCHDL" and "A/F ALPHA-B1" are within the SP value using CON-

SULT-III in "SPEC" of "DATA MONITOR" mode. Refer to EC-109, "Component Function Check".

Is the measurement value within the SP value? C
YES >> GO TO 9.

NO >> GO TO 8.

8.DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Detect malfunctioning part according to EC-110, "Diagnosis Procedure".

Is malfunctioning part detected?

YES >> GO TO 11.

NO >> GO TO 9.

9.DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

F Detect malfunctioning system according to EC-439, "Symptom Table" based on the confirmed symptom in

step 4, and determine the trouble diagnosis order based on possible causes and symptom.

G >> GO TO 10.
10.DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Inspect according to Diagnosis Procedure of the system.

NOTE:

The Diagnosis Procedure in EC section described based on open circuit inspection. A short circuit inspection

is also required for the circuit check in the Diagnosis Procedure. For details, refer to GI-45, "Circuit Inspec- I

tion".

Is malfunctioning part detected?

YES >> GO TO 11.

NO >> Monitor input data from related sensors or check the voltage of related ECM terminals using CON-

SULT-III. Refer to EC-394, "Reference Value".

11.REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-

ment.

3. Check DTC. If DTC is displayed, erase it. Refer to EC-86, "Diagnosis Description".

>> GO TO 12.

12.FINAL CHECK

When DTC was detected in step 2, perform DTC CONFIRMATION PROCEDURE or Component Function N Check again, and then make sure that the malfunction have been repaired securely.

When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and make sure

that the symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 10. YES-2 >> Symptom remains: GO TO 6. NO >> Before returning the vehicle to the customer, make sure to erase unnecessary DTC in ECM. P
(Refer to EC-86, "Diagnosis Description".) If the completion of SRT is needed, drive vehicle under the specific DRIVING PATTERN in EC-434, "How to Set SRT Code".

Diagnostic Work Sheet

INFOID:0000000001502795

DESCRIPTION

Revision: May 2007

EC-9

2007 Altima Hybrid

DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
There are many operating conditions that lead to the malfunction of engine components. A good grasp of such conditions can make troubleshooting faster and more accurate. In general, each customer feels differently about a incident. It is important to fully understand the symptoms or conditions for a customer complaint. Utilize a diagnostic worksheet like the one on the next page in order to organize all the information for troubleshooting. Some conditions may cause the MIL to come on steady or blink and DTC to be detected. Examples: · Vehicle ran out of fuel, which caused the engine to misfire. · Fuel filler cap was left off or incorrectly screwed on, allowing fuel to
evaporate into the atmosphere.
WORKSHEET SAMPLE

[QR25DE]
SEF907L

Revision: May 2007

EC-10

MTBL0017
2007 Altima Hybrid

INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
BASIC INSPECTION

[QR25DE]
A

BASIC INSPECTION : Special Repair Requirement
1.INSPECTION START

INFOID:0000000001502796
EC

1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance.

2. Open engine hood and check the following:

- Harness connectors for improper connections

- Wiring harness for improper connections, pinches and cut

- Vacuum hoses for splits, kinks and improper connections

- Hoses and ducts for leaks

- Air cleaner clogging - Gasket

3. Lift up the vehicle.

4. Activate "INSPECTION MODE 1" (HBC-103) to start engine,

and warm up engine until engine coolant temperature indicator

points the middle of gauge. Ensure engine stays below 1,500 rpm.

SEF983U

5. Run engine at about 2,500 rpm for about 2 minutes under no load. 6. Make sure that no DTC is displayed with CONSULT-III or GST.

Is any DTC detected?

YES >> GO TO 2.

NO >> GO TO 3.

2.REPAIR OR REPLACE

Repair or replace components as necessary according to corresponding Diagnostic Procedure.

>> GO TO 3

3.CHECK TARGET IDLE SPEED

1. Run engine at about 2,500 rpm for about 2 minutes under no load.

2. Rev engine two or three times under no load, then run engine at idle speed for about 1 minute.

3. Shift the selector lever to N position with engine running.

4. Check idle speed.

For procedure, refer to EC-14, "IDLE SPEED : Special Repair Requirement". For specification, refer to EC-455, "Idle Speed".

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Shift the selector lever to P position.

Is the inspection result normal?

YES >> GO TO 9.

NO >> GO TO 4.

4.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

1. Turn ignition switch OFF.

2. Perform EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".

>> GO TO 5.

5.PERFORM IDLE AIR VOLUME LEARNING

Perform EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement". Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 6. NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.

Revision: May 2007

EC-11

2007 Altima Hybrid

INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
6.CHECK TARGET IDLE SPEED AGAIN

[QR25DE]

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine until engine coolant temperature.
2. Shift the selector lever to N position with engine running. 3. Check idle speed.
For procedure, refer to EC-14, "IDLE SPEED : Special Repair Requirement". For specification, refer to EC-455, "Idle Speed". CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 4. Shift the selector lever to P position.
Is the inspection result normal?
YES >> GO TO 9. NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART

Check the Following. · Check camshaft position sensor (PHASE) and circuit. Refer to EC-253, "DTC Logic". · Check crankshaft position sensor (POS) and circuit. Refer to EC-249, "DTC Logic".
Is the inspection result normal?
YES >> GO TO 8. NO >> Repair or replace. Then GO TO 4.
8.CHECK ECM FUNCTION

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)

>> GO TO 4.
9.CHECK IGNITION TIMING
1. Run engine at idle. 2. Shift the selector lever to N position with engine running. 3. Check ignition timing with a timing light.
For procedure, refer to EC-14, "IGNITION TIMING : Special Repair Requirement". For specification, refer to EC-455, "Ignition Timing". CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 4. Shift the selector lever to P position.
Is the inspection result normal?
YES >> GO TO 17. NO >> GO TO 10.
10.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
1. Turn ignition switch OFF. 2. Perform EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".

>> GO TO 11.
11.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement".
Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 12. NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
12.CHECK TARGET IDLE SPEED AGAIN

Revision: May 2007

EC-12

2007 Altima Hybrid

< BASIC INSPECTION >

INSPECTION AND ADJUSTMENT

[QR25DE]

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine until engine coolant

temperature.

2. Shift the selector lever to N position with engine running.

3. Check idle speed.

For procedure, refer to EC-14, "IDLE SPEED : Special Repair Requirement". For specification, refer to EC-455, "Idle Speed".

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

4. Shift the selector lever to P position.

Is the inspection result normal?

YES >> GO TO 13.

NO >> GO TO 15.

13.CHECK IGNITION TIMING AGAIN

E 1. Run engine at idle.

2. Shift the selector lever to N position with engine running.

3. Check ignition timing with a timing light.

For procedure, refer to EC-14, "IGNITION TIMING : Special Repair Requirement".

For specification, refer to EC-455, "Ignition Timing".

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the G engine operates but electricity cannot be generated.

4. Shift the selector lever to P position.

Is the inspection result normal?

YES >> GO TO 17.

NO >> GO TO 14.

14.CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to EM-50, "Removal and Installation".

Is the inspection result normal?

YES >> GO TO 15.

NO >> Repair the timing chain installation. Then GO TO 4.

15.DETECT MALFUNCTIONING PART K

Check the following.

· Check camshaft position sensor (PHASE) and circuit. Refer to EC-253, "DTC Logic".

· Check crankshaft position sensor (POS) and circuit. Refer to EC-249, "DTC Logic".

Is the inspection result normal?

YES >> GO TO 16.

NO >> Repair or replace. Then GO TO 4.
16.CHECK ECM FUNCTION

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this

is a rare case.)

>> GO TO 4.

17.INSPECTION END

If ECM is replaced during this BASIC INSPECTION procedure, go to EC-14, "ADDITIONAL SERVICE WHEN

REPLACING CONTROL UNIT : Special Repair Requirement".

>> INSPECTION END
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

Revision: May 2007

EC-13

2007 Altima Hybrid

INSPECTION AND ADJUSTMENT

< BASIC INSPECTION >

[QR25DE]

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000001502797

When replacing ECM, this procedure must be performed.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-

quirement

INFOID:0000000001502798

1.PERFORM VIN REGISTRATION

Refer to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement".

>> GO TO 2.
2.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement".

>> GO TO 3.
3.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement".

>> END
IDLE SPEED

IDLE SPEED : Description

INFOID:0000000001502799

This describes how to check the idle speed. For the actual procedure, follow the instructions in "BASIC INSPECTION".

IDLE SPEED : Special Repair Requirement

INFOID:0000000001502800

1.CHECK IDLE SPEED

With CONSULT-III Check idle speed in "DATA MONITOR" mode with CONSULT-III.
With GST Check idle speed with Service $01 of GST.

>> INSPECTION END
IGNITION TIMING

IGNITION TIMING : Description

INFOID:0000000001502801

This describes how to check the ignition timing. For the actual procedure, follow the instructions in "BASIC INSPECTION".

IGNITION TIMING : Special Repair Requirement

INFOID:0000000001502802

1.CHECK IGNITION TIMING

Revision: May 2007

EC-14

2007 Altima Hybrid

INSPECTION AND ADJUSTMENT
< BASIC INSPECTION > 1. Attach timing light to No. 1 igniton coil (1) wire as shown.
A : Timing light : Vehicle front

[QR25DE]
A EC

2. Check ignition timing.
1 : Timing indicator
>> INSPECTION END

C
ALBIA0135ZZ
D
E
F

VIN REGISTRATION VIN REGISTRATION : Description

G
ALBIA0048ZZ
H
INFOID:0000000001502803

VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.

NOTE:

Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).

VIN REGISTRATION : Special Repair Requirement
1.CHECK VIN

INFOID:0000000001502804

Check the VIN of the vehicle and note it. Refer to GI-21, "Identification Number".

>> GO TO 2.

2.PERFORM VIN REGISTRATION

With CONSULT-III

1. Turn ignition switch ON.

2. Select "VIN REGISTRATION" in "WORK SUPPORT" mode.

3. Follow the instruction of CONSULT-III display.

>> END
THROTTLE VALVE CLOSED POSITION LEARNING
THROTTLE VALVE CLOSED POSITION LEARNING : Description

N O
INFOID:0000000001502805

Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle valve by monitoring the throttle position sensor output signal. It must be performed each time harness connec- P tor of electric throttle control actuator or ECM is disconnected.
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement
INFOID:0000000001502806
1.START
1. Make sure that accelerator pedal is fully released.

Revision: May 2007

EC-15

2007 Altima Hybrid

INSPECTION AND ADJUSTMENT

< BASIC INSPECTION >

[QR25DE]

2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.

>> END
IDLE AIR VOLUME LEARNING

IDLE AIR VOLUME LEARNING : Description

INFOID:0000000001502807

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps each engine idle speed within the specific range. It must be performed under any of the following conditions: · Each time electric throttle control actuator or ECM is replaced. · Idle speed or ignition timing is out of specification.

IDLE AIR VOLUME LEARNING : Special Repair Requirement

INFOID:0000000001502808

1.PRECONDITIONING

Make sure that all of the following conditions are satisfied. Learning will be cancelled if any of the following conditions are missed for even a moment. · Battery voltage: More than 12.9V (At idle) · Engine coolant temperature: 70 - 100°C (158 - 212°F) · PNP switch: ON · Vehicle speed: Stopped · Transmission: Warmed-up (Drive vehicle for 10 minutes.)
Do you have CONSULT-III?
YES >> GO TO 2. NO >> GO TO 4.
2.IDLE AIR VOLUME LEARNING

With CONSULT-III 1. Perform Throttle Valve Closed Position Learning. Refer to EC-15, "THROTTLE VALVE CLOSED POSI-
TION LEARNING : Special Repair Requirement". 2. Turn ignition switch ON (READY). 3. Select "IDLE AIR VOL LEARN" in "WORK SUPPORT" mode. 4. Touch "START" and wait 20 seconds.
Is "CMPLT" displayed on CONSULT-III screen?
YES >> GO TO 3. NO >> GO TO 6.
3.CHECK IDLE SPEED AND IGNITION TIMING

1. Rev up the engine two or three times. 2. Check idle speed and ignition timing are within the specifications. Refer to EC-455, "Idle Speed" and EC-
455, "Ignition Timing".
Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 6.
4.IDLE AIR VOLUME LEARNING

Without CONSULT-III NOTE: · It is better to count the time accurately with a clock. · It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has
a malfunction. 1. Lift up the vehicle. 2. Perform Throttle Valve Closed Position Learning. Refer to EC-15, "THROTTLE VALVE CLOSED POSI-
TION LEARNING : Special Repair Requirement". 3. Turn ignition switch OFF and wait at least 10 seconds. 4. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

Revision: May 2007

EC-16

2007 Altima Hybrid

< BASIC INSPECTION >

INSPECTION AND ADJUSTMENT

[QR25DE]

5. Repeat the following procedure quickly five times within 5 seconds.

- Fully depress the accelerator pedal.

- Fully release the accelerator pedal.

6. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops

blinking and turned ON. 7. Fully release the accelerator pedal and turn ignition switch ON (READY).

8. Depress the accelerator pedal and keep it to start engine within 10 seconds after the MIL turned ON.

9. Shift the selector lever to N position with engine running.

10. Fully release the accelerator pedal.

11. Wait 1 minute.

CAUTION:

JMBIA0455GB

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

12. Shift the selector lever to P position.

13. Depress the accelerator pedal and keep it.

14. Shift the selector lever to N position with engine running.

15. Check idle speed and ignition timing are within the specifications. Refer to EC-455, "Idle Speed" and EC- J

455, "Ignition Timing".

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

16. Shift the selector lever to P position.

>> GO TO 5.

5.CHECK IDLE SPEED AND IGNITION TIMING

1. Depress the accelerator pedal and keep it.

2. Shift the selector lever to N position with engine running.

3. Check idle speed and ignition timing are within the specifications. Refer to EC-455, "Idle Speed" and EC-

455, "Ignition Timing". CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

4. Shift the selector lever to P position.

Is the inspection result normal?

YES >> INSPECTION END

NO >> GO TO 6.

6.DETECT MALFUNCTIONING PART-I

Check the following · Check that throttle valve is fully closed. · Check PCV valve operation. · Check that downstream of throttle valve is free from air leakage.
Is the inspection result normal?

Revision: May 2007

EC-17

2007 Altima Hybrid

INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
YES >> GO TO 7. NO >> Repair or replace malfunctioning part.
7.DETECT MALFUNCTIONING PART-II

[QR25DE]

Engine component parts and their installation condition are questionable. Check and eliminate the cause of the incident. It is useful to perform "TROUBLE DIAGNOSIS - SPECIFICATION VALUE". Refer to EC-109, "Description". If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform Idle Air Volume Learning all over again: · Engine stalls. · Erroneous idle.

>> INSPECTION END
MIXTURE RATIO SELF-LEARNING VALUE CLEAR

MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Description

INFOID:0000000001502809

This describes how to erase the mixture ratio self-learning value. For the actual procedure, follow the instructions in "Diagnosis Procedure".
MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement
INFOID:0000000001502810
1.START
With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-III. 3. Clear mixture ratio self-learning value by touching "CLEAR".
With GST 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Turn ignition switch OFF. 3. Disconnect mass air flow sensor harness connector. 4. Turn ignition switch ON (READY). 5. Depress the accelerator pedal to start engine, then keep engine running for at least 5 seconds. 6. Turn ignition switch OFF and reconnect mass air flow sensor harness connector. 7. Select Service $03 with GST. Make sure DTC P0102 is detected. 8. Select Service $04 with GST to erase the DTC P0102.

>> END

Revision: May 2007

EC-18

2007 Altima Hybrid

ENGINE CONTROL SYSTEM
< FUNCTION DIAGNOSIS >
FUNCTION DIAGNOSIS
ENGINE CONTROL SYSTEM
System Diagram

[QR25DE]
A EC INFOID:0000000001502811

System Description

ECM performs various controls such as fuel injection control and ignition timing control.

Revision: May 2007

EC-19

JMBIA0456GB INFOID:0000000001502812
2007 Altima Hybrid

ENGINE CONTROL SYSTEM
< FUNCTION DIAGNOSIS >
Component Parts Location

[QR25DE]
INFOID:0000000001502813

ALBIA0138ZZ

1. Intake valve timing control solenoid valve
4. Air fuel ratio (A/F) sensor 1
7. ECM
10. Mass air flow sensor (with intake temperature sensor)

2. Ignition coil (with power transistor) and spark plug
5. Camshaft position sensor (PHASE) 8. Refrigerant pressure sensor 11. EVAP service port

13. EVAP canister purge volume control 14. Fuel injector solenoid valve

3. Knock sensor, Crankshaft position sensor (POS)
6. Engine coolant temperature sensor
9. IPDM E/R
12. Electric throttle control actuator (with built in throttle position sensor and throttle control motor)

Revision: May 2007

EC-20

2007 Altima Hybrid

ENGINE CONTROL SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

1. Throttle valve 4. EVAP service port 7. ECM
: Vehicle front

ALBIA0160ZZ

2. Electric throttle control actuator

3. Electric throttle control actuator har-

ness connector

5. EVAP canister purge volume control 6. Intake manifold collector

solenoid valve

8. Intake valve timing control solenoid

valve

Revision: May 2007

EC-21

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

ENGINE CONTROL SYSTEM

[QR25DE]

1. Air cleaner assembly
4. EPS control unit (view with air cleaner assembly removed)
7. Mass air flow sensor (with intake temperature sensor)
10. Intake manifold collector
13. Engine oil cooler

2. Fuel pump fuse 5. Engine grounds
8. Upper radiator hose 11. Camshaft position sensor (PHASE) 14. Crankshaft position sensor (POS)

: Vehicle front

ALBIA0161ZZ
3. IPDM E/R 6. Air cleaner assembly
9. Engine coolant temperature sensor 12. Knock sensor 15. Drive shaft RH

Revision: May 2007

EC-22

2007 Altima Hybrid

ENGINE CONTROL SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0162ZZ

1. No.1 ignition coil

2. Cooling fan motor-1

3. Cooling fan motor-2

4. Cooling fan control module

5. Refrigerant pressure sensor

6. Stop lamp switch

7. ASCD brake switch

8. Accelerator pedal position sensor 9. Air cleaner assembly

10. Cooling fan relay-1

11. ASCD steering switch

12. CANSEC switch

13. RESUME/ACCELERATE switch

14. SET/COAST switch

15. MAIN switch

: Vehicle front
O

Revision: May 2007

EC-23

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

ENGINE CONTROL SYSTEM

[QR25DE]

1. Hood opener handle 4. Condenser-2

2. Data link connector 5. Upper radiator hose

7. EVAP canister vent control valve 8. EVAP canister (MAIN)
10. Fuel level sensor unit and fuel pump 11. Fuel pump assembly harness connector (This illustration is view with rear seat cushion and inspection hole cover removed.)
13. Fuel tank temperature sensor
: Vehicle front

ALBIA0173ZZ
3. Fuel injector harness connector 6. EVAP control system pressure sen-
sor 9. EVAP canister (SUB) 12. Fuel pressure regulator

Revision: May 2007

EC-24

2007 Altima Hybrid

ENGINE CONTROL SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

E
JMBIA0118GB
F

1. Exhaust manifold cover
4. Heated oxygen sensor 2 harness connector
7. Heated oxygen sensor 3
: Vehicle front
Component Description

2. Air fuel ratio (A/F) sensor 1
5. Heated oxygen sensor 2
8. Heated oxygen sensor 3 harness connector

ALBIA0272ZZ

3. Air fuel ratio (A/F) sensor 1 harness

connector

6. Oil pan

P
INFOID:0000000001502814

A/F sensor 1 A/F sensor 1 heater
Revision: May 2007

Component

EC-178, "Description" EC-135, "Description"
EC-25

Reference

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

ENGINE CONTROL SYSTEM

Component ASCD brake switch ASCD steering switch ASCD vehicle speed sensor Camshaft position sensor (PHASE) Crankshaft position sensor (POS) Cooling fan motor Electric throttle control actuator Engine coolant temperature sensor EVAP canister purge volume control solenoid valve EVAP canister vent control valve EVAP control system pressure sensor Fuel injector Fuel level sensor Fuel pump Fuel tank temperature sensor Heated oxygen sensor 2 Heated oxygen sensor 2 heater Heated oxygen sensor 3 Heated oxygen sensor 3 heater Ignition signal Intake air temperature sensor Intake valve timing control solenoid valve Knock sensor Mass air flow sensor PCV valve Refrigerant pressure sensor Stop lamp switch Throttle control motor Throttle control motor relay Throttle position sensor Vehicle speed sensor

Reference EC-336, "Description" EC-333, "Description" EC-342, "Description" EC-253, "Description" EC-249, "Description" EC-372, "Description" EC-356, "Description" EC-165, "Description" EC-266, "Description" EC-274, "Description" EC-282, "Description" EC-235, "Description" EC-300, "Description" EC-376, "Description" EC-229, "Description" EC-192, "Description" EC-138, "Description" EC-209, "Description" EC-141, "Description" EC-380, "Description" EC-162, "Description" EC-78, "System Description" EC-247, "Description" EC-147, "Description" EC-391, "Description" EC-392, "Description" EC-344, "Description" EC-353, "Description" EC-347, "Description" EC-168, "Description" EC-305, "Description"

[QR25DE]

Revision: May 2007

EC-26

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >
MULTIPORT FUEL INJECTION SYSTEM
System Diagram

[QR25DE]
A
INFOID:0000000001502815
EC

System Description
INPUT/OUTPUT SIGNAL CHART

JMBIA0457GB

INFOID:0000000001502816
J

Sensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Mass air flow sensor

Input Signal to ECM

ECM function

Actuator

Engine speed Piston position

Amount of intake air

Intake air temperature sensor

Intake air temperature

Engine coolant temperature sensor

Engine coolant temperature

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas

Throttle position sensor

Throttle position

Battery Knock sensor Heated oxygen sensor 2*1 Brake ECU

Battery voltage

Fuel injection

Engine knocking condition

& mixture ratio Fuel injector

Density of oxygen in exhaust gas

control

Vehicle speed*2

Accelerator pedal position*2

Hybrid vehicle control ECU

Shift position*2
Engine operation command*2 (Engine start request, Engine idle request, Fuel cut request, Engine power request, Engine speed request, etc.)

*1: This sensor is not used to control the engine system under normal conditions.

Revision: May 2007

EC-27

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >
*2: This signal is sent to the ECM through CAN communication line.

[QR25DE]

SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the ECM memory. The program value is preset by engine operating conditions. These conditions are determined by input signals (for engine speed and intake air) from the crankshaft position sensor (POS), camshaft position sensor (PHASE) and the mass air flow sensor.

VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operating conditions as listed below.

<Fuel increase>
· During warm-up · When starting the engine · During acceleration · Hot-engine operation · When selector lever is changed from N to D · High-load, high-speed operation

<Fuel decrease>
· During deceleration · During high engine speed operation
MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)

PBIB2793E
The mixture ratio feedback system provides the best air-fuel mixture ratio for driveability and emission control. The three way catalyst (manifold) can then better reduce CO, HC and NOx emissions. This system uses A/F sensor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The ECM adjusts the injection pulse width according to the sensor voltage signal. For more information about A/F sensor 1, refer to EC-178, "DTC Logic". This maintains the mixture ratio within the range of stoichiometric (ideal air-fuel mixture). This stage is referred to as the closed loop control condition. Heated oxygen sensor 2 is located downstream of the three way catalyst (manifold). Even if the switching characteristics of A/F sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal from heated oxygen sensor 2. · Open Loop Control
The open loop system condition refers to when the ECM detects any of the following conditions. Feedback control stops in order to maintain stabilized fuel combustion. - Deceleration and acceleration - High-load, high-speed operation - Malfunction of A/F sensor 1 or its circuit - Insufficient activation of A/F sensor 1 at low engine coolant temperature - High engine coolant temperature - During warm-up - After shifting from N to D - When starting the engine
MIXTURE RATIO SELF-LEARNING CONTROL
The mixture ratio feedback control system monitors the mixture ratio signal transmitted from A/F sensor 1. This feedback signal is then sent to the ECM. The ECM controls the basic mixture ratio as close to the theoretical mixture ratio as possible. However, the basic mixture ratio is not necessarily controlled as originally

Revision: May 2007

EC-28

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

designed. Both manufacturing differences (i.e., mass air flow sensor hot wire) and characteristic changes dur-

ing operation (i.e., fuel injector clogging) directly affect mixture ratio.

Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This is

then computed in terms of "injection pulse duration" to automatically compensate for the difference between

the two ratios. "Fuel trim" refers to the feedback compensation value compared against the basic injection duration. Fuel trim

includes short term fuel trim and long term fuel trim.

"Short term fuel trim" is the short-term fuel compensation used to maintain the mixture ratio at its theoretical

value. The signal from A/F sensor 1 indicates whether the mixture ratio is RICH or LEAN compared to the the- C

oretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and an increase in

fuel volume if it is lean.

"Long term fuel trim" is overall fuel compensation carried out long-term to compensate for continual deviation of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences,

wear over time and changes in the usage environment.

FUEL INJECTION TIMING

Two types of systems are used.

SEF337W

· Sequential Multiport Fuel Injection System

Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used

when the engine is running.

· Simultaneous Multiport Fuel Injection System

Fuel is injected simultaneously into all four cylinders twice each engine cycle. In other words, pulse signals

of the same width are simultaneously transmitted from the ECM.

The four injectors will then receive the signals two times for each engine cycle.

This system is used if the fail-safe system (CPU) is operating.

FUEL SHUT-OFF

Fuel to each cylinder is cut off during deceleration, operation of the engine at excessively high speeds or

receiving the fuel cut request signal from hybrid vehicle control ECU.

Revision: May 2007

EC-29

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >
Component Parts Location

[QR25DE]
INFOID:0000000001502817

ALBIA0138ZZ

1. Intake valve timing control solenoid valve
4. Air fuel ratio (A/F) sensor 1
7. ECM
10. Mass air flow sensor (with intake temperature sensor)

2. Ignition coil (with power transistor) and spark plug
5. Camshaft position sensor (PHASE) 8. Refrigerant pressure sensor 11. EVAP service port

13. EVAP canister purge volume control 14. Fuel injector solenoid valve

Revision: May 2007

EC-30

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

1. Throttle valve 4. EVAP service port 7. ECM
: Vehicle front

ALBIA0160ZZ

2. Electric throttle control actuator

3. Electric throttle control actuator har-

ness connector

5. EVAP canister purge volume control 6. Intake manifold collector

solenoid valve

8. Intake valve timing control solenoid

valve

Revision: May 2007

EC-31

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Air cleaner assembly
4. EPS control unit (view with air cleaner assembly removed)
7. Mass air flow sensor (with intake temperature sensor)
10. Intake manifold collector
13. Engine oil cooler

2. Fuel pump fuse 5. Engine grounds
8. Upper radiator hose 11. Camshaft position sensor (PHASE) 14. Crankshaft position sensor (POS)

: Vehicle front

ALBIA0161ZZ
3. IPDM E/R 6. Air cleaner assembly
9. Engine coolant temperature sensor 12. Knock sensor 15. Drive shaft RH

Revision: May 2007

EC-32

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0162ZZ

1. No.1 ignition coil

2. Cooling fan motor-1

3. Cooling fan motor-2

4. Cooling fan control module

5. Refrigerant pressure sensor

6. Stop lamp switch

7. ASCD brake switch

8. Accelerator pedal position sensor 9. Air cleaner assembly

10. Cooling fan relay-1

11. ASCD steering switch

12. CANSEC switch

13. RESUME/ACCELERATE switch

14. SET/COAST switch

15. MAIN switch

: Vehicle front
O

Revision: May 2007

EC-33

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Hood opener handle 4. Condenser-2

2. Data link connector 5. Upper radiator hose

ALBIA0173ZZ
3. Fuel injector harness connector 6. EVAP control system pressure sen-
sor 9. EVAP canister (SUB) 12. Fuel pressure regulator

Revision: May 2007

EC-34

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

E
JMBIA0118GB
F

1. Exhaust manifold cover
4. Heated oxygen sensor 2 harness connector
7. Heated oxygen sensor 3
: Vehicle front
Component Description

2. Air fuel ratio (A/F) sensor 1
5. Heated oxygen sensor 2
8. Heated oxygen sensor 3 harness connector

ALBIA0272ZZ

3. Air fuel ratio (A/F) sensor 1 harness

connector

6. Oil pan

P
INFOID:0000000001502818

Component A/F sensor 1 Camshaft position sensor (PHASE)
Revision: May 2007

EC-178, "Description" EC-253, "Description"
EC-35

Reference

2007 Altima Hybrid

MULTIPORT FUEL INJECTION SYSTEM
< FUNCTION DIAGNOSIS >

Component Crankshaft position sensor (POS) Engine coolant temperature sensor Fuel injector Heated oxygen sensor 2 Intake air temperature sensor Knock sensor Mass air flow sensor Throttle position sensor Vehicle speed sensor

EC-249, "Description" EC-165, "Description" EC-235, "Description" EC-138, "Description" EC-162, "Description" EC-247, "Description" EC-147, "Description" EC-168, "Description" EC-305, "Description"

Reference

[QR25DE]

Revision: May 2007

EC-36

2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >
ELECTRIC IGNITION SYSTEM
System Diagram

[QR25DE]
A
INFOID:0000000001502819
EC

System Description
INPUT/OUTPUT SIGNAL CHART

JMBIA0458GB

INFOID:0000000001502820
J

Sensor

Input Signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

Engine speed

Camshaft position sensor (PHASE)

Piston position

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Throttle position sensor

Throttle position

Battery

Battery voltage

Knock sensor Brake ECU

Engine knocking Vehicle speed* Vehicle speed*

Ignition timing Ignition coil (with power transis-

control

tor)

Accelerator pedal position*
O
Shift position*

Hybrid vehicle control ECU

Engine operation command*

(Engine start request, Engine idle

request, Fuel cut request, Engine

power request, Engine speed re-

quest, etc.)

*: This signal is sent to the ECM through CAN communication line.

SYSTEM DESCRIPTION
Firing order: 1 - 3 - 4 - 2

Revision: May 2007

EC-37

2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the engine. The ignition timing data is stored in the ECM. The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) signal. Computing this information, ignition signals are transmitted to the power transistor. During the following conditions, the ignition timing is revised by the ECM according to the other data stored in the ECM. · At starting · During warm-up · At idle · At low battery voltage · During acceleration The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition. The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.

Component Parts Location

INFOID:0000000001502821

Revision: May 2007

EC-38

ALBIA0138ZZ
2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Intake valve timing control solenoid 2. Ignition coil (with power transistor) 3. Knock sensor,

valve

and spark plug

Crankshaft position sensor (POS)

4. Air fuel ratio (A/F) sensor 1

5. Camshaft position sensor (PHASE) 6. Engine coolant temperature sensor

7. ECM
10. Mass air flow sensor (with intake temperature sensor)

8. Refrigerant pressure sensor 11. EVAP service port

13. EVAP canister purge volume control 14. Fuel injector solenoid valve

9. IPDM E/R

12. Electric throttle control actuator (with

built in throttle position sensor and

throttle control motor)

G H

1. Throttle valve 4. EVAP service port 7. ECM
: Vehicle front Revision: May 2007

ALBIA0160ZZ

2. Electric throttle control actuator

3. Electric throttle control actuator har-

ness connector

5. EVAP canister purge volume control 6. Intake manifold collector solenoid valve

8. Intake valve timing control solenoid valve

EC-39

2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Air cleaner assembly
4. EPS control unit (view with air cleaner assembly removed)
7. Mass air flow sensor (with intake temperature sensor)
10. Intake manifold collector
13. Engine oil cooler

2. Fuel pump fuse 5. Engine grounds
8. Upper radiator hose 11. Camshaft position sensor (PHASE) 14. Crankshaft position sensor (POS)

: Vehicle front

ALBIA0161ZZ
3. IPDM E/R 6. Air cleaner assembly
9. Engine coolant temperature sensor 12. Knock sensor 15. Drive shaft RH

Revision: May 2007

EC-40

2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0162ZZ

1. No.1 ignition coil

2. Cooling fan motor-1

3. Cooling fan motor-2

4. Cooling fan control module

5. Refrigerant pressure sensor

6. Stop lamp switch

7. ASCD brake switch

8. Accelerator pedal position sensor 9. Air cleaner assembly

10. Cooling fan relay-1

11. ASCD steering switch

12. CANSEC switch

13. RESUME/ACCELERATE switch

14. SET/COAST switch

15. MAIN switch

: Vehicle front
O

Revision: May 2007

EC-41

2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Hood opener handle 4. Condenser-2

2. Data link connector 5. Upper radiator hose

ALBIA0173ZZ
3. Fuel injector harness connector 6. EVAP control system pressure sen-
sor 9. EVAP canister (SUB) 12. Fuel pressure regulator

Revision: May 2007

EC-42

2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

E
JMBIA0118GB
F

1. Exhaust manifold cover
4. Heated oxygen sensor 2 harness connector
7. Heated oxygen sensor 3
: Vehicle front
Component Description

2. Air fuel ratio (A/F) sensor 1
5. Heated oxygen sensor 2
8. Heated oxygen sensor 3 harness connector

ALBIA0272ZZ

3. Air fuel ratio (A/F) sensor 1 harness

connector

6. Oil pan

P
INFOID:0000000001502822

Component Camshaft position sensor (PHASE) Crankshaft position sensor (POS)
Revision: May 2007

EC-253, "Description" EC-249, "Description"
EC-43

Reference

2007 Altima Hybrid

ELECTRIC IGNITION SYSTEM
< FUNCTION DIAGNOSIS >

Component Engine coolant temperature sensor Ignition signal Knock sensor Mass air flow sensor Throttle position sensor Vehicle speed sensor

EC-165, "Description" EC-380, "Description" EC-247, "Description" EC-147, "Description" EC-168, "Description" EC-305, "Description"

Reference

[QR25DE]

Revision: May 2007

EC-44

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System Diagram

[QR25DE]
A
INFOID:0000000001502823
EC

System Description
INPUT/OUTPUT SIGNAL CHART

JMCIA0165GB

INFOID:0000000001502824
J

Sensor

Input

Signal

ECU

Output Signal

K
Actuator

Stop lamp switch Brake pedal operation ASCD brake switch Brake pedal operation

CRUISE lamp operation* SET lamp operation*

Combina-
tion meter L

Accelerator pedal position sensor

Accelerator pedal operation

PNP switch MG ECU

Gear position MG2 speed

Hybrid Torque request

MG ECU

Operation

MG1 MG2

vehicle

Brake ECU

Brake pedal operation*

control ECU

Stop lamp switch Brake pedal operation

ASCD brake switch Brake pedal operation

ASCD steering switch

ASCD steering switch operation

ECM

ASCD request*

Vehicle speed* Engine power request* Engine speed request*

ECM

Operation

Electric throttle control actuator

Brake ECU

Vehicle speed*

*: This signal is sent through CAN communication line.

BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions. Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/ h (25 MPH) and 144 km/h (89 MPH).

Revision: May 2007

EC-45

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

< FUNCTION DIAGNOSIS >

[QR25DE]

The hybrid vehicle control ECU receives signals from each switch, sensor, control unit, and maintains constant vehicle speed by optimizing the use of the engine and motor driving force. Operation status of ASCD is indicated by CRUISE lamp and SET lamp in combination meter. If any malfunction occurs in ASCD system, it automatically deactivates control. NOTE: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

SET OPERATION
Press MAIN switch. (The CRUISE lamp in combination meter illuminates.) When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89 MPH), press SET/COAST switch. (Then SET lamp in combination meter illuminates.)

ACCELERATE OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until the switch is released or vehicle speed reaches maximum speed controlled by the system. And then ASCD will keep the new set speed.

CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled. · CANCEL switch is pressed · More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared) · Brake pedal is depressed · Selector lever is changed to N, P, R position · Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed · TCS system is operated When any of the following conditions is detected, the hybrid vehicle control ECU will cancel the cruise operation and inform the driver by blinking indicator lamp. · Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly. If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle speed memory will be erased.

COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the switch is released. And then ASCD will keep the new set speed.

RESUME OPERATION
When the RESUME/ACCELERATE switch is pressed after cancel operation other than pressing MAIN switch is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must meet following conditions. · Brake pedal is released · Selector lever is in other than P and N positions · Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)

Revision: May 2007

EC-46

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >
Component Parts Location

[QR25DE]
INFOID:0000000001502825
A

1. Combination meter 4. Master warning light 7. Stop lamp switch 10. Yaw rate/side G sensor

M
ALCIA0008ZZ

2. READY operation indicator light

3. Malfunction indicator light

5. Data link connector

6. Steering angle sensor

8. Accelerator pedal position sensor 9. ACU (Air bag diagnosis sensor unit)

11. Controller (A/C auto AMP.)

12. Vehicle information display indicator

Revision: May 2007

EC-47

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]

ALCIA0009ZZ

1. Inverter with converter assembly

2. Water pump with motor & bracket as- 3. sembly

4. HV battery

5. Auxiliary battery

7. Hybrid vehicle control ECU

8. Brake ECU

(located under heater box assembly)

10. A: Crankshaft position sensor B: Axle

11. ECM

Vehicle front

High voltage fuse and fusible link box A: HV CONT MAIN fuse 10A B: IGCT relay C: IGCT fusible link 50A D: DC/DC fusible link 120A
Frame wire
Electric compressor (For A/C)

Revision: May 2007

EC-48

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALCIA0010ZZ

1. Cover

2. Compressor fuse cover

3. MG1 connector

4. MG2 connector

5. Generator resolver and generator temperature sensor

6. Park/Neutral position (PNP) switch

7. Motor resolver

8. Motor temperature sensor

9. Hybrid transaxle (MG1, MG2, motor

speed reduction planetary gear unit,

power split planetary gear unit)

10. Inverter with converter assembly connector (MG ECU)

11. Inverter with converter assembly connector (Resolver)

12. Inverter with converter assembly (Boost converter, inverter, MG ECU)

Revision: May 2007

EC-49

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Service plug grip 4. SMRG 7. Hybrid vehicle converter 10. Battery temperature sensor 2

2. Battery temperature sensor 0 5. SMRB 8. Battery temperature sensor 3 11. Battery temperature sensor 1

ALCIA0004ZZ
3. Battery smart unit 6. Battery current sensor 9. Intake air temperature sensor

Revision: May 2007

EC-50

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0138ZZ

1. Intake valve timing control solenoid 2. Ignition coil (with power transistor) 3. Knock sensor,

valve

and spark plug

Crankshaft position sensor (POS)

4. Air fuel ratio (A/F) sensor 1

5. Camshaft position sensor (PHASE) 6. Engine coolant temperature sensor

7. ECM

8. Refrigerant pressure sensor

9. IPDM E/R

10. Mass air flow sensor (with intake temperature sensor)

11. EVAP service port

13. EVAP canister purge volume control 14. Fuel injector solenoid valve

12. Electric throttle control actuator (with

built in throttle position sensor and

throttle control motor)

Revision: May 2007

EC-51

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Throttle valve 4. EVAP service port 7. ECM
: Vehicle front

ALBIA0160ZZ

2. Electric throttle control actuator

3. Electric throttle control actuator harness connector

5. EVAP canister purge volume control 6. Intake manifold collector solenoid valve

8. Intake valve timing control solenoid valve

Revision: May 2007

EC-52

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0161ZZ

1. Air cleaner assembly

2. Fuel pump fuse

3. IPDM E/R

4. EPS control unit (view with 5. Engine grounds air cleaner assembly removed)
7. Mass air flow sensor (with 8. Upper radiator hose intake temperature sensor)

6. Air cleaner assembly
N
9. Engine coolant temperature sensor

10. Intake manifold collector 11. Camshaft position sensor (PHASE)

12. Knock sensor

13. Engine oil cooler

14. Crankshaft position sensor (POS)

15. Drive shaft RH

: Vehicle front

Revision: May 2007

EC-53

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]

1. No.1 ignition coil 4. Cooling fan control module 7. ASCD brake switch 10. Cooling fan relay 13. RESUME/ACCELERATE switch
: Vehicle front

ALBIA0162ZZ

2. Cooling fan motor-1 5. Refrigerant pressure sensor 8. Accelerator pedal position sensor 11. ASCD steering switch 14. SET/COAST switch

3. Cooling fan motor-2 6. Stop lamp switch 9. Air cleaner assembly 12. CANSEC switch 15. MAIN switch

Revision: May 2007

EC-54

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]
A

1. Hood opener handle 4. Condenser-2

2. Data link connector 5. Upper radiator hose

ALBIA0173ZZ

3. Fuel injector harness connector

6. EVAP control system pressure sensor

9. EVAP canister (SUB)

12. Fuel pressure regulator

Revision: May 2007

EC-55

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >

[QR25DE]

JMBIA0118GB

1. Exhaust manifold cover 4. Heated oxygen sensor 2 harness
connector 7. Heated oxygen sensor 3
: Vehicle front

2. Air fuel ratio (A/F) sensor 1 5. Heated oxygen sensor 2
8. Heated oxygen sensor 3 harness connector

ALBIA0272ZZ
3. Air fuel ratio (A/F) sensor 1 harness connector
6. Heated oxygen sensor 2 (This illustration is a view from under vehicle.)

Revision: May 2007

EC-56

2007 Altima Hybrid

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
< FUNCTION DIAGNOSIS >
Component Description

Component ASCD steering switch ASCD brake switch Stop lamp switch Electric throttle control actuator MG1, MG2 ASCD indicator

Reference EC-333, "Description" HBC-470, "Description", EC-336, "Description" HBC-475, "Description", EC-344, "Description" EC-356, "Description" HBC-39, "MG1 AND MG2 MAIN CONTROL : System Description" HBC-570, "Description"

[QR25DE]
INFOID:0000000001502826
A
EC
C
D

Revision: May 2007

EC-57

2007 Altima Hybrid

CAN COMMUNICATION
< FUNCTION DIAGNOSIS >
CAN COMMUNICATION

[QR25DE]

System Description

INFOID:0000000001502827

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. Refer to LAN-27, "CAN Communication Signal Chart", about CAN communication for detail..

Revision: May 2007

EC-58

2007 Altima Hybrid

COOLING FAN CONTROL
< FUNCTION DIAGNOSIS >
COOLING FAN CONTROL
System Diagram

[QR25DE]
A
INFOID:0000000001502828
EC

System Description
INPUT/OUTPUT SIGNAL CHART

JMBIA0459GB
G
INFOID:0000000001502829
H

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS) Camshaft position sensor (PHASE)

Engine speed

Engine coolant temperature sensor Refrigerant pressure sensor Battery
Controller (auto amp.)
Brake ECU

Engine coolant temperature Refrigerant pressure Battery voltage Air conditioner ON signal* A/C evaporator temperature* Target A/C evaporator temperature* Vehicle speed*

Cooling fan control

J
IPDM E/R
Cooling fan control module K
Cooling fan motor
L

Vehicle speed*

Hybrid vehicle control ECU

Cooling fan speed request*

*: This signal is sent to ECM through CAN communication line.

SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, air conditioner N ON signal, refrigerant pressure, target A/C evaporator temperature, A/C evaporator temperature and cooling fan speed request from hybrid vehicle control ECU. Cooling fan control signal is sent to IPDM E/R from ECM by CAN communication line. Then, IPDM E/R sends O ON/OFF pulse duty signal to cooling fan control module. Corresponding to this ON/OFF pulse duty signal, cooling fan control module gives cooling fan motor operating voltage to cooling fan motors. Cooling fan speed is controlled by duty cycle of cooling fan motor operating voltage sent from cooling fan control module.
P

Revision: May 2007

EC-59

2007 Altima Hybrid

COOLING FAN CONTROL
< FUNCTION DIAGNOSIS >
Component Parts Location

[QR25DE]
INFOID:0000000001502830

ALBIA0138ZZ

1. Intake valve timing control solenoid valve
4. Air fuel ratio (A/F) sensor 1
7. ECM
10. Mass air flow sensor (with intake temperature sensor)

2. Ignition coil (with power transistor) and spark plug
5. Camshaft position sensor (PHASE) 8. Refrigerant pressure sensor 11. EVAP service port

13. EVAP canister purge volume control 14. Fuel injector solenoid valve

Revision: May 2007

EC-60

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

COOLING FAN CONTROL

[QR25DE]
A

1. Throttle valve 4. EVAP service port 7. ECM
: Vehicle front

ALBIA0160ZZ

2. Electric throttle control actuator

3. Electric throttle control actuator har-

ness connector

5. EVAP canister purge volume control 6. Intake manifold collector

solenoid valve

8. Intake valve timing control solenoid

valve

Revision: May 2007

EC-61

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

COOLING FAN CONTROL

[QR25DE]

1. Air cleaner assembly
4. EPS control unit (view with air cleaner assembly removed)
7. Mass air flow sensor (with intake temperature sensor)
10. Intake manifold collector
13. Engine oil cooler

2. Fuel pump fuse 5. Engine grounds
8. Upper radiator hose 11. Camshaft position sensor (PHASE) 14. Crankshaft position sensor (POS)

: Vehicle front

ALBIA0161ZZ
3. IPDM E/R 6. Air cleaner assembly
9. Engine coolant temperature sensor 12. Knock sensor 15. Drive shaft RH

Revision: May 2007

EC-62

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

COOLING FAN CONTROL

[QR25DE]
A

ALBIA0162ZZ

1. No.1 ignition coil

2. Cooling fan motor-1

3. Cooling fan motor-2

4. Cooling fan control module

5. Refrigerant pressure sensor

6. Stop lamp switch

7. ASCD brake switch

8. Accelerator pedal position sensor 9. Air cleaner assembly

10. Cooling fan relay-1

11. ASCD steering switch

12. CANSEC switch

13. RESUME/ACCELERATE switch

14. SET/COAST switch

15. MAIN switch

: Vehicle front
O

Revision: May 2007

EC-63

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

COOLING FAN CONTROL

[QR25DE]

1. Hood opener handle 4. Condenser-2

2. Data link connector 5. Upper radiator hose

ALBIA0173ZZ
3. Fuel injector harness connector 6. EVAP control system pressure sen-
sor 9. EVAP canister (SUB) 12. Fuel pressure regulator

Revision: May 2007

EC-64

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >

COOLING FAN CONTROL

[QR25DE]
A

E
JMBIA0118GB
F

1. Exhaust manifold cover
4. Heated oxygen sensor 2 harness connector
7. Heated oxygen sensor 3
: Vehicle front
Component Description

2. Air fuel ratio (A/F) sensor 1
5. Heated oxygen sensor 2
8. Heated oxygen sensor 3 harness connector

ALBIA0272ZZ

3. Air fuel ratio (A/F) sensor 1 harness

connector

6. Oil pan

P
INFOID:0000000001502831

Component Camshaft position sensor (PHASE) Crankshaft position sensor (POS)
Revision: May 2007

EC-253, "Description" EC-249, "Description"
EC-65

Reference

2007 Altima Hybrid

< FUNCTION DIAGNOSIS >
Component Cooling fan control module Cooling fan motor Engine coolant temperature sensor Refrigerant pressure sensor

COOLING FAN CONTROL
EC-372, "Description" EC-372, "Description" EC-165, "Description" EC-392, "Description"

Reference

[QR25DE]

Revision: May 2007

EC-66

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >
EVAPORATIVE EMISSION SYSTEM
System Diagram
EVAPORATIVE EMISSION LINE DRAWING

[QR25DE]
A
INFOID:0000000001502832
EC C D E F
PBIB1631E
G H I J K L M N O P

Revision: May 2007

EC-67

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Intake manifold collector A. From next figure

2. EVAP service port

ALBIA0085ZZ
3. EVAP canister purge volume control solenoid valve

Revision: May 2007

EC-68

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0153ZZ

1. EVAP control system pressure sensor 2. EVAP canister (MAIN)

3. EVAP canister (SUB)

4. EVAP canister vent control valve

A. To previous figure

NOTE:

Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses.

System Description

INFOID:0000000001502833

INPUT/OUTPUT SIGNAL CHART
P

Revision: May 2007

EC-69

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS) Camshaft position sensor (PHASE)

Engine speed

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Battery

Battery voltage

Throttle position sensor Air fuel ratio (A/F) sensor 1

Throttle position
Density of oxygen in exhaust gas (Mixture ratio feedback signal)

EVAP canister

EVAP canister purge vol-

purge flow control ume control solenoid valve

Fuel tank temperature sensor

Fuel temperature in fuel tank

EVAP control system pressure sensor

Pressure in purge line

Brake ECU

Vehicle speed*

Hybrid vehicle control ECU

Vehicle speed* Accelerator pedal position*

*: This signal is sent to the ECM through CAN communication line.

SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister. The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the vapor is stored there when the engine is not operating or when refueling to the fuel tank. The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is proportionally regulated as the air flow increases. EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and idling.

Revision: May 2007

EC-70

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >
Component Parts Location

[QR25DE]
INFOID:0000000001502834
A

M
ALBIA0138ZZ

1. Intake valve timing control solenoid 2. Ignition coil (with power transistor) 3. Knock sensor,

valve

and spark plug

Crankshaft position sensor (POS)

4. Air fuel ratio (A/F) sensor 1

5. Camshaft position sensor (PHASE) 6. Engine coolant temperature sensor

7. ECM

8. Refrigerant pressure sensor

9. IPDM E/R

10. Mass air flow sensor (with intake temperature sensor)

11. EVAP service port

12. Electric throttle control actuator (with

built in throttle position sensor and

throttle control motor)

13. EVAP canister purge volume control 14. Fuel injector

solenoid valve

Revision: May 2007

EC-71

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Throttle valve 4. EVAP service port 7. ECM
: Vehicle front

ALBIA0160ZZ

2. Electric throttle control actuator

3. Electric throttle control actuator harness connector

5. EVAP canister purge volume control 6. Intake manifold collector solenoid valve

8. Intake valve timing control solenoid valve

Revision: May 2007

EC-72

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0161ZZ

1. Air cleaner assembly

2. Fuel pump fuse

3. IPDM E/R

4. EPS control unit (view with 5. Engine grounds air cleaner assembly removed)
7. Mass air flow sensor (with 8. Upper radiator hose intake temperature sensor)

6. Air cleaner assembly
N
9. Engine coolant temperature sensor

10. Intake manifold collector 11. Camshaft position sensor (PHASE)

12. Knock sensor

13. Engine oil cooler

14. Crankshaft position sensor (POS)

15. Drive shaft RH

: Vehicle front

Revision: May 2007

EC-73

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

1. No.1 ignition coil 4. Cooling fan control module 7. ASCD brake switch 10. Cooling fan relay-1 13. RESUME/ACCELERATE switch
: Vehicle front

ALBIA0162ZZ

2. Cooling fan motor-1 5. Refrigerant pressure sensor 8. Accelerator pedal position sensor 11. ASCD steering switch 14. SET/COAST switch

3. Cooling fan motor-2 6. Stop lamp switch 9. Air cleaner assembly 12. CANSEC switch 15. MAIN switch

Revision: May 2007

EC-74

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

1. Hood opener handle 4. Condenser-2

2. Data link connector 5. Upper radiator hose

ALBIA0173ZZ

3. Fuel injector harness connector

6. EVAP control system pressure sensor

9. EVAP canister (SUB)

12. Fuel pressure regulator

Revision: May 2007

EC-75

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

JMBIA0118GB

1. Exhaust manifold cover
4. Heated oxygen sensor 2 harness connector
7. Heated oxygen sensor 3
: Vehicle front
Component Description

2. Air fuel ratio (A/F) sensor 1
5. Heated oxygen sensor 2
8. Heated oxygen sensor 3 harness connector

ALBIA0272ZZ
3. Air fuel ratio (A/F) sensor 1 harness connector
6. Oil pan
INFOID:0000000001502835

Component A/F sensor 1 Camshaft position sensor (PHASE)
Revision: May 2007

EC-178, "Description" EC-253, "Description"
EC-76

Reference

2007 Altima Hybrid

EVAPORATIVE EMISSION SYSTEM
< FUNCTION DIAGNOSIS >

Component Crankshaft position sensor (POS) Engine coolant temperature sensor EVAP canister purge volume control solenoid valve EVAP control system pressure sensor Fuel tank temperature sensor Mass air flow sensor Throttle position sensor Vehicle speed sensor

EC-249, "Description" EC-165, "Description" EC-266, "Description" EC-282, "Description" EC-229, "Description" EC-147, "Description" EC-168, "Description" EC-305, "Description"

Reference

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-77

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >
INTAKE VALVE TIMING CONTROL
System Diagram

[QR25DE]
INFOID:0000000001502836

JMBIA0460GB

System Description
INPUT/OUTPUT SIGNAL CHART

INFOID:0000000001502837

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine coolant temperature sensor Brake ECU

Engine speed and piston position
Engine coolant temperature Vehicle speed*

Intake valve Intake valve timing control timing control solenoid valve

Hybrid vehicle control ECU

Vehicle speed*

*: This signal is sent to the ECM through CAN communication line

SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve. The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.

Revision: May 2007

EC-78

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >
Component Parts Location

[QR25DE]
INFOID:0000000001502838
A

M
ALBIA0138ZZ

1. Intake valve timing control solenoid 2. Ignition coil (with power transistor) 3. Knock sensor,

valve

and spark plug

Crankshaft position sensor (POS)

4. Air fuel ratio (A/F) sensor 1

5. Camshaft position sensor (PHASE) 6. Engine coolant temperature sensor

7. ECM

8. Refrigerant pressure sensor

9. IPDM E/R

10. Mass air flow sensor (with intake temperature sensor)

11. EVAP service port

12. Electric throttle control actuator (with

built in throttle position sensor and

throttle control motor)

13. EVAP canister purge volume control 14. Fuel injector

solenoid valve

Revision: May 2007

EC-79

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >

[QR25DE]

1. Throttle valve 4. EVAP service port 7. ECM
: Vehicle front

ALBIA0160ZZ

2. Electric throttle control actuator

3. Electric throttle control actuator harness connector

5. EVAP canister purge volume control 6. Intake manifold collector solenoid valve

8. Intake valve timing control solenoid valve

Revision: May 2007

EC-80

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >

[QR25DE]
A

ALBIA0161ZZ

1. Air cleaner assembly

2. Fuel pump fuse

3. IPDM E/R

4. EPS control unit (view with 5. Engine grounds air cleaner assembly removed)
7. Mass air flow sensor (with 8. Upper radiator hose intake temperature sensor)

6. Air cleaner assembly
N
9. Engine coolant temperature sensor

10. Intake manifold collector 11. Camshaft position sensor (PHASE)

12. Knock sensor

13. Engine oil cooler

14. Crankshaft position sensor (POS)

15. Drive shaft RH

: Vehicle front

Revision: May 2007

EC-81

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >

[QR25DE]

1. No.1 ignition coil 4. Cooling fan control module 7. ASCD brake switch 10. Cooling fan relay-1 13. RESUME/ACCELERATE switch
: Vehicle front

ALBIA0162ZZ

2. Cooling fan motor-1 5. Refrigerant pressure sensor 8. Accelerator pedal position sensor 11. ASCD steering switch 14. SET/COAST switch

3. Cooling fan motor-2 6. Stop lamp switch 9. Air cleaner assembly 12. CANSEC switch 15. MAIN switch

Revision: May 2007

EC-82

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >

[QR25DE]
A

1. Hood opener handle 4. Condenser-2

2. Data link connector 5. Upper radiator hose

ALBIA0173ZZ

3. Fuel injector harness connector

6. EVAP control system pressure sensor

9. EVAP canister (SUB)

12. Fuel pressure regulator

Revision: May 2007

EC-83

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >

[QR25DE]

JMBIA0118GB

1. Exhaust manifold cover
4. Heated oxygen sensor 2 harness connector
7. Heated oxygen sensor 3
: Vehicle front
Component Description

2. Air fuel ratio (A/F) sensor 1
5. Heated oxygen sensor 2
8. Heated oxygen sensor 3 harness connector

ALBIA0272ZZ
3. Air fuel ratio (A/F) sensor 1 harness connector
6. Oil pan
INFOID:0000000001502839

Component Camshaft position sensor (PHASE) Crankshaft position sensor (POS)
Revision: May 2007

EC-253, "Description" EC-249, "Description"
EC-84

Reference

2007 Altima Hybrid

INTAKE VALVE TIMING CONTROL
< FUNCTION DIAGNOSIS >

Component Engine coolant temperature sensor Intake valve timing control solenoid valve Vehicle speed sensor

Reference EC-165, "Description" EC-78, "System Description" EC-305, "Description"

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-85

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis Description

[QR25DE]
INFOID:0000000001502840

INTRODUCTION
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actuators. The ECM also records various emission-related diagnostic information including:

Emission-related diagnostic information

Diagnostic service

Diagnostic Trouble Code (DTC)

Service $03 of SAE J1979

Freeze Frame data

Service $02 of SAE J1979

System Readiness Test (SRT) code

Service $01 of SAE J1979

1st Trip Diagnostic Trouble Code (1st Trip DTC)

Service $07 of SAE J1979

1st Trip Freeze Frame data

Test values and Test limits

Service $06 of SAE J1979

Calibration ID

Service $09 of SAE J1979

The above information can be checked using procedures listed in the table below.
×: Applicable --: Not applicable

DTC

1st trip DTC

Freeze Frame data

1st trip Freeze Frame data

SRT code

SRT status

Test value

CONSULT-III

GST

ECM

×*

*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-428, "Fail Safe".)

TWO TRIP DETECTION LOGIC
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the ECM memory. The MIL will not light up at this stage. <1st trip> If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd trip> The "trip" in the "Two Trip Detection Logic" means a driving mode in which self-diagnosis is performed during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL, and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
×: Applicable --: Not applicable

MIL

DTC

1st trip DTC

Items

1st trip

Blinking

Lighting up

2nd trip

Blinking

Lighting up

1st trip 2nd trip 1st trip displaying displaying displaying

2nd trip display-
ing

Misfire (Possible three way catalyst

damage) -- DTC: P0300 - P0304 is

being detected

Misfire (Possible three way catalyst

damage) -- DTC: P0300 - P0304 is

being detected

One trip detection diagnoses (Refer to EC-431, "DTC Index".)

Except above

DTC AND FREEZE FRAME DATA

DTC and 1st Trip DTC

Revision: May 2007

EC-86

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic

result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip A

DTC will not be displayed.

If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not

light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the

2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,

the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-

utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd C

trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the

1st trip, the DTC and 1st trip DTC are stored in the ECM memory.

Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION".

For malfunctions in which 1st trip DTCs are displayed, refer to "EMISSION-RELATED DIAGNOSTIC INFOR-

MATION ITEMS". These items are required by legal regulations to continuously monitor the system/compo-

nent. In addition, the items monitored non-continuously are also displayed on CONSULT-III.

1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL

and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the

vehicle from being tested, for example during Inspection/Maintenance (I/M) tests. When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame

data as specified in Work Flow procedure Step 2, refer to EC-7, "Work Flow". Then perform DTC CONFIRMA-

TION PROCEDURE or Component Function Check to try to duplicate the malfunction. If the malfunction is

duplicated, the item requires repair.

Freeze Frame Data and 1st Trip Freeze Frame Data

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, absolute throttle position, base H

fuel schedule and intake air temperature at the moment a malfunction is detected.

Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.

The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-III or I GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST.

Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the

ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once

freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no

longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-

lowing priorities to update the data.

Priority

Items

Freeze frame data

Misfire -- DTC: P0300 - P0304 Fuel Injection System Function -- DTC: P0171, P0172

Except the above items

1st trip freeze frame data

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal- N function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze O frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the ECM memory. Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM memory is erased. Procedures for clearing the ECM memory are described in "HOW TO ERASE EMISSION- P RELATED DIAGNOSTIC INFORMATION".

How to Read DTC and 1st Trip DTC
With CONSULT-III With GST CONSULT-III or GST (Generic Scan Tool) Examples: P0340, P0850, P1148, etc. These DTCs are prescribed by SAE J2012.

Revision: May 2007

EC-87

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM

< FUNCTION DIAGNOSIS >

[QR25DE]

(CONSULT-III also displays the malfunctioning component or system.)

No Tools The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC. Example: 0340, 0850, 1148, etc. These DTCs are controlled by NISSAN. · 1st trip DTC No. is the same as DTC No. · Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to normal. CONSULT-III can identify malfunction status as shown below. Therefore, using CONSULT-III (if available) is recommended. DTC or 1st trip DTC of a malfunction is displayed in "SELF-DIAGNOSTIC RESULTS" mode of CONSULT-III. Time data indicates how many times the vehicle was driven after the last detection of a DTC. If the DTC is being detected currently, the time data will be [0]. If a 1st trip DTC is stored in the ECM, the time data will be [1t].

How to Erase DTC and 1st Trip DTC
With CONSULT-III The emission related diagnostic information in the ECM can be erased by selecting "All Erase" in the "Description" of "FINAL CHECK" mode with CONSULT-III.
With GST The emission related diagnostic information in the ECM can be erased by selecting Service $04 with GST. 1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again. 2. Select Service $04 with GST (Generic Scan Tool).
No Tools 1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once.
Wait at least 10 seconds and then turn it ON (engine stopped) again. 2. Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. · If the battery is disconnected, the emission-related diagnostic information will be lost within 24
hours. · The following data are cleared when the ECM memory is erased. - Diagnostic trouble codes - 1st trip diagnostic trouble codes - Freeze frame data - 1st trip freeze frame data - System readiness test (SRT) codes - Test values Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all of the data listed above, are cleared from the ECM memory during work procedures.

SYSTEM READINESS TEST (SRT) CODE
System Readiness Test (SRT) code is specified in Service $01 of SAE J1979. As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and components. Completion must be verified in order for the emissions inspection to proceed. If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating "INCMP", use the information in this Service Manual to set the SRT to "CMPLT". In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT status will indicate "CMPLT" for each application system. Once set as "CMPLT", the SRT status remains "CMPLT" until the self-diagnosis memory is erased. Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's normal driving pattern; the SRT will indicate "INCMP" for these items. NOTE: The SRT will also indicate "INCMP" if the self-diagnosis memory is erased for any reason or if the ECM memory power supply is interrupted for several hours. If, during the state emissions inspection, the SRT indicates "CMPLT" for all test items, the inspector will continue with the emissions test. However, if the SRT indicates "INCMP" for one or more of the SRT items the vehicle is returned to the customer untested. NOTE:

Revision: May 2007

EC-88

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

If MIL is ON during the state emissions inspection, the vehicle is also returned to the customer untested even
though the SRT indicates "CMPLT" for all test items. Therefore, it is important to check SRT ("CMPLT") and A DTC (No DTCs) before the inspection.

SRT Item

The table below shows required self-diagnostic items to set the SRT to "CMPLT".

SRT item (CONSULT-III indication) CATALYST
EVAP SYSTEM
HO2S

Required self-diagnostic items to set the SRT to "CMPLT"
Three way catalyst function HC adsorption catalyst function EVAP control system purge flow monitoring EVAP control system Air fuel ratio sensor 1 Heated oxygen sensor 2 Heated oxygen sensor 2 Heated oxygen sensor 2 Heated oxygen sensor 3 Heated oxygen sensor 3 Heated oxygen sensor 3

Corresponding DTC

No.

P0420

P2423

P0441

P0456

P0133

P0137

P0138

P0139

P0143

P0144
G
P0145

SRT Set Timing
SRT is set as "CMPLT" after self-diagnosis has been performed one or more times. Completion of SRT is H done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and is shown in the table below.

Example

Self-diagnosis result

Diagnosis

Ignition cycle ON OFF ON OFF ON OFF ON

All OK

Case 1

P0400

OK (1)

-- (1)

OK (2)

-- (2)

P0402

OK (1)

-- (1)

OK (2)

P1402

OK (1)

OK (2)

-- (2)

SRT of EGR

"CMPLT"

Case 2

P0400 P0402

OK (1) -- (0)

-- (1) -- (0)

-- (1) OK (1)

-- (1)
L
-- (1)

P1402

OK (1)

OK (2)

-- (2)

NG exists

Case 3

SRT of EGR P0400

"INCMP" OK

"CMPLT" --

"CMPLT"

P0402

P1402

(Consecutive

NG)

(1st trip) DTC

1st trip DTC

DTC (= MIL ON)

SRT of EGR

"INCMP"

"CMPLT"

OK: Self-diagnosis is carried out and the result is OK.

NG: Self-diagnosis is carried out and the result is NG.

--: Self-diagnosis is not carried out.
When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will indicate "CMPLT". Case 1 above When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate "CMPLT" at the time the respective self-diagnoses have at least one OK result. Case 2 above

Revision: May 2007

EC-89

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM

< FUNCTION DIAGNOSIS >

[QR25DE]

If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indicate "CMPLT". Case 3 above The table above shows that the minimum number of cycles for setting SRT as "INCMP" is one (1) for each self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state emissions inspection, it is unnecessary for each self-diagnosis to be executed twice (Case 3) for the following reasons: · The SRT will indicate "CMPLT" at the time the respective self-diagnoses have one (1) OK result. · The emissions inspection requires "CMPLT" of the SRT only with OK self-diagnosis results. · When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to "CMPLT" of SRT, the self-diagnosis
memory must be erased from ECM after repair. · If the 1st trip DTC is erased, all the SRT will indicate "INCMP".
NOTE: SRT can be set as "CMPLT" together with the DTC(s). Therefore, DTC check must always be carried out prior to the state emission inspection even though the SRT indicates "CMPLT".

SRT Service Procedure If a vehicle has failed the state emissions inspection due to one or more SRT items indicating "INCMP", review the flowchart diagnostic sequence on the next page.

*1 "How to Read DTC and 1st Trip DTC" *2 "How to Display SRT Status"

Revision: May 2007

EC-90

PBIB2320E
*3 "How to Set SRT Code" 2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

How to Display SRT Status

WITH CONSULT-III

Selecting "SRT STATUS" in "DTC CONFIRMATION" mode with CONSULT-III.

For items whose SRT codes are set, a "CMPLT" is displayed on the CONSULT-III screen; for items whose

SRT codes are not set, "INCMP" is displayed.

NOTE:

Though displayed on the CONSULT-III screen, "HO2S HTR" is not SRT item.

WITH GST

Selecting Service $01 with GST (Generic Scan Tool)

NO TOOLS

A SRT code itself can not be displayed while only SRT status can be.

1. Turn ignition switch ON and wait 20 seconds.

2. SRT status is indicated as shown below.

· When all SRT codes are set, MIL lights up continuously.

· When any SRT codes are not set, MIL will flash periodically for 10 seconds.

MALFUNCTION INDICATOR LAMP (MIL)
Description The MIL is located on the instrument panel. 1. The MIL will light up when the ignition switch is turned ON. This
is a bulb check. If the MIL does not light up, refer to EC-385, "Component Function Check". 2. When the ignition switch is turned ON (READY), the MIL should go off. If the MIL remains on, the on board diagnostic system has detected an engine system malfunction.
On Board Diagnostic System Function The on board diagnostic system has the following three functions.

J
PBIB2317E
K
L
M
N
SEF217U
O
P

Revision: May 2007

EC-91

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

Diagnostic Test Mode Mode I
Mode II

Ignition switch Function

Explanation of Function

ON ON (READY)
ON

BULB CHECK

This function checks the MIL bulb for damage (blown, open circuit, etc.). If the MIL does not come on, check MIL circuit. When any SRT codes are not set, MIL may flash. For the details, refer to "How to Display SRT Status".

MALFUNCTION WARNING

This is a usual driving condition. When a malfunction is detected twice in two consecutive driving cycles (two trip detection logic), the MIL will light up to inform the driver that a malfunction has been detected. The following malfunctions will light up or blink the MIL in the 1st trip. · Misfire (Possible three way catalyst damage) · One trip detection diagnoses

SELF-DIAGNOSTIC RESULTS This function allows DTCs and 1st trip DTCs to be read.

Diagnostic Test Mode I -- Bulb Check In this mode, the MIL on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to EC385, "Component Function Check".
Diagnostic Test Mode I -- Malfunction Warning

MIL

Condition

When the malfunction is detected.

OFF

No malfunction.

This DTC number is clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS)

Diagnostic Test Mode II -- Self-diagnostic Results
In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MIL as shown below. The DTC and 1st trip DTC are displayed at the same time. If the MIL does not illuminate in diagnostic test mode I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MIL illuminates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are displayed, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These uniden-

Revision: May 2007

EC-92

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

tified codes can be identified by using the CONSULT-III or GST. A DTC will be used as an example for how to

read a code.

PBIB3005E
A particular trouble code can be identified by the number of four-digit numeral flashes as follows. J

Number

123456789

Flashes

10 1 2 3 4 5 6 7 8 9 11

The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds consisting of an ON (0.6-sec-

ond) - OFF (0.6-second) cycle.

The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle. A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later L

numeral appears on the display 1.3 seconds after the former numeral has disappeared.

A change from one trouble code to another occurs at an interval of 1.8-second OFF.

In this way, all the detected malfunctions are classified by their DTC numbers. The DTC 0000 refers to no mal- M

function. (See EC-431, "DTC Index")

How to Switch Diagnostic Test Mode

NOTE:

· It is better to count the time accurately with a clock.

· It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has

a malfunction. · Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.

HOW TO SET DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS)

1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

2. Repeat the following procedure quickly five times within 5 seconds.

- Fully depress the accelerator pedal.

- Fully release the accelerator pedal.

3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts

blinking.

NOTE:

Do not release the accelerator pedal for 10 seconds if MIL may start blinking on the halfway of this

10 seconds. This blinking is displaying SRT status and is continued for another 10 seconds.

Revision: May 2007

EC-93

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >
4. Fully release the accelerator pedal. ECM has entered to Diagnostic Test Mode II (Self-diagnostic results). NOTE: Wait until the same DTC (or 1st trip DTC) appears to confirm all DTCs certainly.

[QR25DE]

PBIB0092E
HOW TO ERASE DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS) 1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to "How to Set Diagnostic Test Mode II
(Self-diagnostic Results)". 2. Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM. 3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.
How to Erase Diagnostic Test Mode II (Self-diagnostic Results) The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to "How to Erase Diagnostic Test Mode II (Self-diagnostic Results)". · If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours. · Be careful not to erase the stored memory before starting trouble diagnoses.
OBD System Operation Chart
Relationship Between MIL, 1st Trip DTC, DTC and Detectable Items · When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are
stored in the ECM memory. · When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are
stored in the ECM memory, and the MIL will come on. · The MIL will go off after the vehicle is driven 3 times (driving pattern B) with no malfunction. The drive is
counted only when the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting, the counter will reset. · The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A) without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times (driving pattern C) without the same malfunction recurring. The "TIME" in "SELF-DIAGNOSTIC RESULTS" mode of CONSULT-III will count the number of times the vehicle is driven. · The 1st trip DTC is not displayed when the self-diagnosis results in OK for the 2nd trip.
Summary Chart

Items

Fuel Injection System

Misfire

Other

MIL (goes off)

3 (pattern B)

DTC, Freeze Frame Data (no display)

80 (pattern C)

40 (pattern A)

1st Trip DTC (clear)

1 (pattern C), *1

1 (pattern B)

1st Trip Freeze Frame Data (clear)

*1, *2

1 (pattern B)

For details about patterns B and C under "Fuel Injection System" and "Misfire", see "EXPLANATION FOR DRIVING PATTERNS FOR "MISFIRE <EXHAUST QUALITY DETERIORATION>", "FUEL INJECTION SYSTEM". For details about patterns A and B under Other, see "EXPLANATION FOR DRIVING PATTERNS FOR "MISFIRE <EXHAUST QUALITY DETERIORATION>", "FUEL INJECTION SYSTEM". *1: Clear timing is at the moment OK is detected. *2: Clear timing is when the same malfunction is detected in the 2nd trip.

Relationship Between MIL, DTC, 1st Trip DTC and Driving Patterns for "Misfire <Exhaust Quality Deterioration>",

Revision: May 2007

EC-94

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >
"Fuel Injection System"

[QR25DE]
A

SEF392S
M

*1: When the same malfunction is de- *2: MIL will go off after vehicle is driven 3 *3: When the same malfunction is de-

tected in two consecutive trips, MIL

times (pattern B) without any mal-

tected in two consecutive trips, the

will light up.

functions.

DTC and the freeze frame data will be stored in ECM.

*4: The DTC and the freeze frame data *5: When a malfunction is detected for *6: The 1st trip DTC and the 1st trip

will not be displayed any longer after

the first time, the 1st trip DTC and the

freeze frame data will be cleared at

vehicle is driven 80 times (pattern C)

1st trip freeze frame data will be

the moment OK is detected.

without the same malfunction. (The

stored in ECM.

DTC and the freeze frame data still

remain in ECM.)

*7: When the same malfunction is de- *8: 1st trip DTC will be cleared when ve-

tected in the 2nd trip, the 1st trip

hicle is driven once (pattern C) with-

freeze frame data will be cleared.

out the same malfunction after DTC

is stored in ECM.

Explanation for Driving Patterns for "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System" <Driving Pattern B> Driving pattern B means the vehicle operation as follows:

Revision: May 2007

EC-95

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM

< FUNCTION DIAGNOSIS >

[QR25DE]

All components and systems should be monitored at least once by the OBD system. · The B counter will be cleared when the malfunction is detected once regardless of the driving pattern. · The B counter will be counted up when driving pattern B is satisfied without any malfunction. · The MIL will go off when the B counter reaches 3. (*2 in "OBD SYSTEM OPERATION CHART") <Driving Pattern C> Driving pattern C means the vehicle operation as follows: The following conditions should be satisfied at the same time: Engine speed: (Engine speed in the freeze frame data) ±375 rpm Calculated load value: (Calculated load value in the freeze frame data) x (1±0.1) [%] Engine coolant temperature (T) condition: · When the freeze frame data shows lower than 70°C (158°F), T should be lower than 70°C (158°F). · When the freeze frame data shows higher than or equal to 70°C (158°F), T should be higher than or equal to
70°C (158°F). Example: If the stored freeze frame data is as follows: Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperature: 80°C (176°F) To be satisfied with driving pattern C, the vehicle should run under the following conditions: Engine speed: 475 - 1,225 rpm, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70°C (158°F) · The C counter will be cleared when the malfunction is detected regardless of vehicle conditions above. · The C counter will be counted up when vehicle conditions above is satisfied without the same malfunction. · The DTC will not be displayed after C counter reaches 80. · The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC is
stored in ECM.

Relationship Between MIL, DTC, 1st Trip DTC and Driving Patterns Except For "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"

Revision: May 2007

EC-96

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]
A

SEF393SD

*1: When the same malfunction is de- *2: MIL will go off after vehicle is driven 3 *3: When the same malfunction is de-

tected in two consecutive trips, MIL

times (pattern B) without any mal-

tected in two consecutive trips, the

will light up.

functions.

DTC and the freeze frame data will be

stored in ECM.
N
*4: The DTC and the freeze frame data *5: When a malfunction is detected for *6: 1st trip DTC will be cleared after vehi-

will not be displayed any longer after

the first time, the 1st trip DTC and the

cle is driven once (pattern B) without

vehicle is driven 40 times (pattern A)

1st trip freeze frame data will be

the same malfunction.

without the same malfunction.

stored in ECM.

(The DTC and the freeze frame data

still remain in ECM.)

*7: When the same malfunction is de-

tected in the 2nd trip, the 1st trip

freeze frame data will be cleared.

Explanation for Driving Patterns Except for "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"

Revision: May 2007

EC-97

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS > <Driving Pattern A>

[QR25DE]

AEC574
· The A counter will be cleared when the malfunction is detected regardless of (1) - (4). · The A counter will be counted up when (1) - (4) are satisfied without the same malfunction. · The DTC will not be displayed after the A counter reaches 40. <Driving Pattern B> Driving pattern B means the vehicle operation as follows: All components and systems should be monitored at least once by the OBD system. · The B counter will be cleared when the malfunction is detected once regardless of the driving pattern. · The B counter will be counted up when driving pattern B is satisfied without any malfunctions. · The MIL will go off when the B counter reaches 3 (*2 in OBD SYSTEM OPERATION CHART).

CONSULT-III Function

INFOID:0000000001502841

FUNCTION

Diagnostic test mode

Function

Work support

This mode enables a technician to adjust some devices faster and more accurately by following the indications on the CONSULT-III unit.

Self-diagnostic results

Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data can be read and erased quickly.*

Data monitor

Input/Output data in the ECM can be read.

Active test

Diagnostic Test Mode in which CONSULT-III drives some actuators apart from the ECMs and also shifts some parameters in a specified range.

DTC & SRT confirmation

The status of system monitoring tests and the self-diagnosis status/result can be confirmed.

Function test

This mode is used to inform customers when their vehicle condition requires periodic maintenance.

ECU part number

ECM part number can be read.

*: The following emission-related diagnostic information is cleared when the ECM memory is erased. · Diagnostic trouble codes · 1st trip diagnostic trouble codes · Freeze frame data · 1st trip freeze frame data · System readiness test (SRT) codes · Test values

ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION

Revision: May 2007

EC-98

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

Item Crankshaft position sensor (POS)

DIAGNOSTIC TEST MODE

SELF-DIAGNOSTIC

DTC & SRT

RESULTS

CONFIRMATION

WORK SUPPORT

DTC*1

FREEZE FRAME DATA*2

DATA MONITOR

ACTIVE TEST

SRT STATUS

DTC WORK SUPPORT

Camshaft position sensor (PHASE)

Mass air flow sensor

Engine coolant temperature sensor

A/F sensor 1 Heated oxygen sensor 2

ENGINE CONTROL COMPONENT PARTS INPUT

Heated oxygen sensor 3

Vehicle speed sensor

Accelerator pedal position sensor

Throttle position sensor

Fuel tank temperature sensor

EVAP control system pressure sensor

Intake air temperature sensor

Knock sensor

Refrigerant pressure sensor Air conditioner switch

PNP switch

Stop lamp switch

Battery voltage

Fuel level sensor

ASCD steering switch

ASCD brake switch

Fuel injector

Power transistor (Ignition timing)

ENGINE COTNROL COMPONENT PARTS OUTPUT

Throttle control motor relay

Throttle control motor

EVAP canister purge volume control solenoid valve

M
×

Fuel pump relay

Cooling fan

A/F sensor 1 heater Heated oxygen sensor 2 heater

×*3

Heated oxygen sensor 3 heater EVAP canister vent control valve

×*3

Intake valve timing control solenoid valve

Calculated load value

X: Applicable *1: This item includes 1st trip DTCs.

Revision: May 2007

EC-99

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-III screen in freeze frame data mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-86, "Diagnosis Description".

*3: Always "CMPLT" is displayed.

INSPECTION PROCEDURE
Refer to CONSULT-III Operators Manual.

WORK SUPPORT MODE

Work Item

WORK ITEM FUEL PRESSURE RELEASE*1 IDLE AIR VOL LEARN SELF-LEARNING CONT EVAP SYSTEM CLOSE
VIN REGISTRATION TARGET IDLE RPM ADJ*2 TARGET IGN TIM ADJ*2

CONDITION

USAGE

· SELECTOR LEVER IS N POSITION WITH ENGINE RUN- When releasing fuel pressure from

NING.

fuel line

· FUEL PUMP WILL STOP BY TOUCHING "START".

· IGNITION SWITCH ON (READY) · THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN ECM.

When learning the idle air volume

· THE COEFFICIENT OF SELF-LEARNING CONTROL When clearing mixture ratio selfMIXTURE RATIO RETURNS TO THE ORIGINAL COEF- learning value FICIENT.

CLOSE THE EVAP CANISTER VENT CONTROL VALVE IN ORDER TO MAKE EVAP SYSTEM CLOSE UNDER THE FOLLOWING CONDITIONS. · IGN SW ON · ENGINE NOT RUNNING · AMBIENT TEMPERATURE IS ABOVE 0°C (32°F). · NO VACUUM AND NO HIGH PRESSURE IN EVAP SYS-
TEM · FUEL TANK TEMP. IS MORE THAN 0°C (32°F). · WITHIN 10 MINUTES AFTER STARTING "EVAP SYS-
TEM CLOSE" · WHEN TRYING TO EXECUTE "EVAP SYSTEM CLOSE"
UNDER THE CONDITION EXCEPT ABOVE, CONSULTIII WILL DISCONTINUE IT AND DISPLAY APPROPRIATE INSTRUCTION. NOTE: WHEN STARTING ENGINE, CONSULT-III MAY DISPLAY "BATTERY VOLTAGE IS LOW. CHARGE BATTERY", EVEN IN USING CHARGED BATTERY.

When detecting EVAP vapor leak point of EVAP system

· IN THIS MODE, VIN IS REGISTERED IN ECM.

When registering VIN in ECM

· INSPECTION MODE · IDLE CONDITION

When setting target idle speed

· INSPECTION MODE · IDLE CONDITION

When adjusting target ignition timing

*1: If this function is performed, a certain DTC may be detected. *2: This function is not necessary in the usual service procedure.

SELF-DIAG RESULTS MODE

Self Diagnostic Item Regarding items of DTC and 1st trip DTC, refer to EC-431, "DTC Index".)

Freeze Frame Data and 1st Trip Freeze Frame Data

Revision: May 2007

EC-100

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

Freeze frame data item*

Description

DIAG TROUBLE CODE [PXXXX]

· The engine control component part/control system has a trouble code, it is displayed as PXXXX. (Refer to

EC-431, "DTC Index".)

· "Fuel injection system status" at the moment a malfunction is detected is displayed.

· One mode in the following is displayed.

FUEL SYS-B1

Mode2: Open loop due to detected system malfunction Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)

Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control

Mode5: Open loop - has not yet satisfied condition to go to closed loop

CAL/LD VALUE [%] · The calculated load value at the moment a malfunction is detected is displayed.

COOLANT TEMP [°C] or [°F]

· The engine coolant temperature at the moment a malfunction is detected is displayed.

· "Long-term fuel trim" at the moment a malfunction is detected is displayed.

L-FUEL TRM-B1 [%] · The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule than

short-term fuel trim.
F
· "Short-term fuel trim" at the moment a malfunction is detected is displayed.

S-FUEL TRM-B1 [%] · The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel sched-

ule.

ENGINE SPEED [rpm] · The engine speed at the moment a malfunction is detected is displayed.

VEHICL SPEED [km/h] or [mph]

· The vehicle speed at the moment a malfunction is detected is displayed.

ABSOL TH·P/S [%] · The throttle valve opening angle at the moment a malfunction is detected is displayed.

B/FUEL SCHDL [msec]

· The base fuel schedule at the moment a malfunction is detected is displayed.

INT/A TEMP SE [°C] or [°F]

· The intake air temperature at the moment a malfunction is detected is displayed.

FUEL SYS-B2

L-FUEL TRM-B2 [%]

S-FUEL TRM-B2 [%]

· Always a certain value is displayed. · These items are not efficient for L32 models.

INT MANI PRES [kPa]

FTFMCH1

*: The items are the same as those of 1st trip freeze frame data.
L
DATA MONITOR MODE

Monitored Item

×: Applicable M

Monitored item ENG SPEED MAS A/F SE-B1 B/FUEL SCHDL

Unit rpm
V msec

Description

Remarks

· Accuracy becomes poor if engine

· Indicates the engine speed computed from the

speed drops below the idle rpm.

signal of the crankshaft position sensor (POS) · If the signal is interrupted while the

and camshaft position sensor (PHASE).

engine is running, an abnormal value

may be indicated.

· When the engine is stopped, a certain

· The signal voltage of the mass air flow sensor is value is indicated.

displayed.

· When engine is running specification

range is indicated in "SPEC".

· "Base fuel schedule" indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction.

· When engine is running specification range is indicated in "SPEC".

Revision: May 2007

EC-101

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

Monitored item
A/F ALPHA-B1
COOLAN TEMP/S
A/F SEN1 (B1) HO2S2 (B1) HO2S3 (B1)
HO2S2 MNTR(B1)
VHCL SPEED SE BATTERY VOLT TP SEN 1-B1 TP SEN 2-B1 FUEL T/TMP SE INT/A TEMP SE EVAP SYS PRES FUEL LEVEL SE START SIGNAL CLSD THL POS AIR COND SIG P/N POSI SW PW/ST SIGNAL
LOAD SIGNAL

Unit %
°C or °F V V V
RICH/LEAN km/h or mph
V V °C or °F °C or °F V V ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF
ON/OFF

Description

Remarks

· The mean value of the air-fuel ratio feedback correction factor per cycle is indicated.

· When the engine is stopped, a certain value is indicated.
· When engine is running specification range is indicated in "SPEC".
· This data also includes the data for the air-fuel ratio learning control.

· The engine coolant temperature (determined by the signal voltage of the engine coolant temperature sensor) is displayed.

· When the engine coolant temperature sensor is open or short-circuited, ECM enters fail-safe mode. The engine coolant temperature determined by the ECM is displayed.

· The A/F signal computed from the input signal of the air fuel ratio (A/F) sensor 1 is displayed.

· The signal voltage of the heated oxygen sensor 2 is displayed.

· The signal voltage of the heated oxygen sensor 3 is displayed.

· Display of heated oxygen sensor 2 signal: RICH: means the amount of oxygen after three way catalyst is relatively small. LEAN: means the amount of oxygen after three way catalyst is relatively large.

· When the engine is stopped, a certain value is indicated.

· The vehicle speed computed from the vehicle speed signal sent from brake ECU is displayed.

· The power supply voltage of ECM is displayed.

· The throttle position sensor signal voltage is displayed.

· TP SEN 2-B1 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.

· The fuel temperature (determined by the signal voltage of the fuel tank temperature sensor) is displayed.

· The intake air temperature (determined by the signal voltage of the intake air temperature sensor) is indicated.

· The signal voltage of EVAP control system pressure sensor is displayed.

· The signal voltage of the fuel level sensor is displayed.

· Indicates start signal status [ON/OFF] computed by the ECM according to the input signals.

· After starting the engine, [OFF] is displayed regardless of the starter signal.

· Indicates idle position [ON/OFF] computed by ECM according to the engine power request signal.

· Indicates [ON/OFF] condition of the air conditioner switch as determined by the air conditioner signal.

· Indicates [ON/OFF] condition from the park/neutral position (PNP) switch signal.

· Always OFF is displayed. · This item is not efficient for L32 models.

· Indicates [ON/OFF] condition from the electrical load signal. ON: Rear window defogger switch is ON and/or lighting switch is in 2nd position. OFF: Both rear window defogger switch and lighting switch are OFF.

Revision: May 2007

EC-102

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

Monitored item IGNITION SW HEATER FAN SW BRAKE SW INJ PULSE-B1 IGN TIMING CAL/LD VALUE MASS AIRFLOW
PURG VOL C/V INT/V TIM (B1) INT/V SOL-B1
FUEL PUMP RLY
VENT CONT/V
THRTL RELAY HO2S2 HTR (B1) HO2S3 HTR(B1) VEHICLE SPEED IDL A/V LEARN TRVL AFTER MIL A/F S1 HTR(B1)

Unit

Description

Remarks

ON/OFF

· Indicates [ON/OFF] condition from ignition switch signal.

ON/OFF

· Indicates [ON/OFF] condition from the blower fan switch signal.

ON/OFF

· Indicates [ON/OFF] condition from the stop lamp switch signal.

msec

· Indicates the actual fuel injection pulse width compensated by ECM according to the input signals.

· When the engine is stopped, a certain computed value is indicated.

BTDC

· Indicates the ignition timing computed by ECM · When the engine is stopped, a certain D

according to the input signals.

value is indicated.

· "Calculated load value" indicates the value of the current air flow divided by peak air flow.

· Indicates the mass air flow computed by ECM ac-

g·m/s

cording to the signal voltage of the mass air flow

sensor.

· Indicates the EVAP canister purge volume con-

trol solenoid valve control value computed by the

ECM according to the input signals.

· The opening becomes larger as the value in-

creases.

°CA

· Indicates [°CA] of intake camshaft advance angle.

· The control value of the intake valve timing con-

trol solenoid valve (determined by ECM accord-

ing to the input signals) is indicated. · The advance angle becomes larger as the value

increases.

· Indicates the fuel pump relay control condition

ON/OFF

determined by ECM according to the input sig-

nals.

· The control condition of the EVAP canister vent

control valve (determined by ECM according to

ON/OFF

the input signals) is indicated.

ON: Closed

OFF: Open
L
· Indicates the throttle control motor relay control

ON/OFF

condition determined by the ECM according to

the input signals.

· Indicates [ON/OFF] condition of heated oxygen

ON/OFF

sensor 2 heater determined by ECM according to

the input signals.

· Indicates [ON/OFF] condition of heated oxygen

ON/OFF

sensor 3 heater determined by ECM according to

the input signals.

km/h or mph

· The vehicle speed computed from the vehicle speed signal sent from HV ECU is displayed.

· Display the condition of Idle Air Volume Learning

YET: Idle air volume learning has not been per-

YET/CMPLT formed yet.

CMPLT: Idle air volume learning has already

been performed successfully.

km or mile · Distance traveled while MIL is activated.

· Air fuel ratio (A/F) sensor 1 heater control value

computed by ECM according to the input signals. · The current flow to the heater becomes larger as

the value increases.

Revision: May 2007

EC-103

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

Monitored item AC PRESS SEN VHCL SPEED SE SET VHCL SPD MAIN SW CANCEL SW RESUME/ACC SW SET SW BRAKE SW1 BRAKE SW2
VHCL SPD CUT
LO SPEED CUT
AT OD MONITOR AT OD CANCEL CRUISE LAMP SET LAMP
A/F ADJ-B1
FAN DUTY
ACCEL PEDAL POSI ENG POWER RQST ENG SPEED RQST CATALYST TEMP-B1

Unit V
km/h or mph km/h or mph
ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF
NON/CUT
NON/CUT
ON/OFF ON/OFF ON/OFF ON/OFF
--
%
% kW rpm °C or °F

Description
· The signal voltage from the refrigerant pressure sensor is displayed.
· The vehicle speed computed from the vehicle speed signal sent from brake ECU is displayed.
· The preset vehicle speed is displayed.
· Indicates [ON/OFF] condition from MAIN switch signal.
· Indicates [ON/OFF] condition from CANCEL switch signal.
· Indicates [ON/OFF] condition from RESUME/ACCELERATE switch signal.
· Indicates [ON/OFF] condition from SET/COAST switch signal.
· Indicates [ON/OFF] condition from ASCD brake switch signal.
· Indicates [ON/OFF] condition of stop lamp switch signal.
· Indicates the vehicle cruise condition. NON: Vehicle speed is maintained at the ASCD set speed. CUT: Vehicle speed decreased to excessively low compared with the ASCD set speed, and ASCD operation is cut off.
· Indicates the vehicle cruise condition. NON: Vehicle speed is maintained at the ASCD set speed. CUT: Vehicle speed decreased to excessively low, and ASCD operation is cut off.
· Always OFF is displayed. · This item is not efficient for L32 models.
· Always OFF is displayed. · This item is not efficient for L32 models.
· Indicates request condition of CRUISE lamp determined by the ECM according to the input signals.
· Always OFF is displayed. · This item is not efficient for L32 models.
· Indicates the correction of factor stored in ECM. The factor is calculated from the difference between the target air-fuel ratio stored in ECM and the air-fuel ratio calculated from A/F sensor 1 signal.
· Indicates a command value for cooling fan. The value is calculated by ECM based on input signals.
· Indicates the accelerator pedal opening value sent from HV ECU.
· The opening becomes larger as the value increases
· Indicates engine power request value sent from HV ECU.
· Indicates engine speed request signal sent from HV ECU.
· Indicates the catalyst temperature computed by ECM according to the input signals.

Revision: May 2007

EC-104

[QR25DE]
Remarks
2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

Monitored item

Unit

Description

Remarks

ENG START RQST

YES/NO

· Indicates [YES/NO] condition of engine start request signal sent from HV ECU.

ENG IDLE RQST

YES/NO

· Indicates [YES/NO] condition of engine idle request signal sent from HV ECU.

ENG F/C RQST

YES/NO

· Indicates [YES/NO] condition of fuel cut request signal sent from HV ECU.

· Indicates the condition of EVAP leak diagnosis.

YET: EVAP leak diagnosis has not been per-

EVAP LEAK DIAG

YET/CMPLT formed yet.

CMPLT: EVAP leak diagnosis has been per-

formed successfully.

· Indicates the ready condition of EVAP leak diag-

EVAP DIAG READY

ON/OFF

nosis. ON: Diagnosis has been ready condition.

OFF: Diagnosis has not been ready condition.

· Indicates the condition of engine does not start

diagnosis.

ENG START DIAG

YET/CMPLT YET: Diagnosis has not been performed yet.

CMPLT: Diagnosis has been performed success-

fully.
G
ENG ST DIAG RSLT NOTNG/NG · Indicates engine does not start diagnosis result.

NOTE:

Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

ACTIVE TEST MODE

Test Item

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

FUEL INJECTION IGNITION TIMING

· Ignition switch: ON (READY) · Engine: Return to the original
trouble condition · Change the amount of fuel injec-
tion using CONSULT-III.
· Ignition switch: ON (READY) · Engine: Return to the original
trouble condition · Timing light: Set · Retard the ignition timing using
CONSULT-III.

If trouble symptom disappears, see CHECK ITEM.
If trouble symptom disappears, see CHECK ITEM.

POWER BALANCE*1

· Ignition switch: ON (READY) · Engine: After warming up · Selector lever: P · Cut off each fuel injector signal
one at a time using CONSULT-III.

Engine runs rough or dies.

J
· Harness and connectors · Fuel injector · Air fuel ratio (A/F) sensor 1
K

· Perform Idle Air Volume Learning.

· Harness and connectors

· Compression

· Fuel injector

· Power transistor

· Spark plug

· Ignition coil

ENG COOLANT TEMP

· Ignition switch: ON (READY) · Engine: Return to the original
trouble condition · Change the engine coolant tem-
perature using CONSULT-III.

If trouble symptom disappears, see CHECK ITEM.

· Harness and connectors · Engine coolant temperature
sensor · Fuel injector

· Ignition switch: ON

FUEL PUMP RELAY*2

· Turn the fuel pump relay "ON" and "OFF" using CONSULT-III

Fuel pump relay makes the operat- · Harness and connectors

ing sound.

· Fuel pump relay

and listen to operating sound.

Revision: May 2007

EC-105

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >

[QR25DE]

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

PURG VOL CONT/V

· Ignition switch: ON (READY) · Engine: After warming up, run en-
gine at 1,500 rpm. · Change the EVAP canister purge
volume control solenoid valve opening percent using CONSULT-III.

Engine speed changes according to the opening percent.

· Harness and connectors · Solenoid valve

FUEL/T TEMP SEN · Change the fuel tank temperature using CONSULT-III.

VENT CONTROL/V

· Ignition switch: ON (Engine stopped)
· Turn solenoid valve "ON" and "OFF" with the CONSULT-III and listen to operating sound.

Solenoid valve makes an operating sound.

· Harness and connectors · Solenoid valve

V/T ASSIGN ANGLE

· Ignition switch: ON (READY) · Engine: Return to the original
trouble condition · Change intake valve timing using
CONSULT-III.

If trouble symptom disappears, see CHECK ITEM.

· Harness and connectors · Intake valve timing control sole-
noid valve

FAN DUTY CONTROL*3

· Ignition switch: ON · Change duty ratio using CON-
SULT-III.

Cooling fan speed changes.

· Harness and connectors · Cooling fan motor · Cooling fan relay · Cooling fan control module · IPDM E/R

*1: This item can be executed for 200 seconds after touch "Test Start". If 200 seconds passed, touch "End", and turn ignition switch OFF. *2: Leaving fuel pump relay OFF with CONSULT-III while ignition switch is ON (READY) position, a certain DTC may be detected. *3: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.

DTC & SRT CONFIRMATION MODE

SRT STATUS Mode For details, refer to EC-86, "Diagnosis Description".

SRT WORK SUPPORT Mode This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

DTC WORK SUPPORT Mode

Test mode

Test item

EVAPORATIVE SYSTEM A/F SEN1

PURG VOL CN/V P1444 PURG FLOW P0441 A/F SEN1(B1) P0133 A/F SEN1(B1) P1276 HO2S2(B1) P1146

HO2S2

HO2S2(B1) P1147

HO2S2(B1) P0139 ENGINE PERFORMANCE POOR ENG PWR P1196

Diagnosis Tool Function

Corresponding DTC No. P0443 P0441 P0133 P0130 P0138 P0137 P0139 P1196

Reference page EC-266 EC-261 EC-188 EC-178 EC-197 EC-192 EC-204 EC-321
INFOID:0000000001502842

DESCRIPTION

Revision: May 2007

EC-106

2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >
Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has 8 different functions explained below. ISO15765-4 is used as the protocol. The name "GST" or "Generic Scan Tool" is used in this service manual.

[QR25DE]
A EC

FUNCTION

SEF139P
D

Diagnostic Service Service $01 READINESS TESTS Service $02 (FREEZE DATA) Service $03 DTCs
Service $04 CLEAR DIAG INFO
Service $06 (ON BOARD TESTS) Service $07 (ON BOARD TESTS)

Service $08

Service $09 (CALIBRATION ID)

Function
E
This diagnostic service gains access to current emission-related data values, including analog inputs and outputs, digital inputs and outputs, and system status information.

This diagnostic service gains access to emission-related data value which were stored by ECM during the freeze frame. For details, refer to EC-431, "DTC Index".

This diagnostic service gains access to emission-related power train trouble codes which

were stored by ECM.

G
This diagnostic service can clear all emission-related diagnostic information. This in-

cludes:

· Clear number of diagnostic trouble codes (Service $01)

· Clear diagnostic trouble codes (Service $03)

· Clear trouble code for freeze frame data (Service $01)

· Clear freeze frame data (Service $02)

· Reset status of system monitoring test (Service $01)

· Clear on board monitoring test results (Service $06 and $07)

This diagnostic service accesses the results of on board diagnostic monitoring tests of specific components/systems that are not continuously monitored.
This diagnostic service enables the off board test drive to obtain test results for emission- J
related powertrain components/systems that are continuously monitored during normal driving conditions.

This diagnostic service can close EVAP system in ignition switch ON position (Engine

stopped). When this diagnostic service is performed, EVAP canister vent control valve can

be closed.

In the following conditions, this diagnostic service cannot function.

· Low ambient temperature

· Low battery voltage

· Engine running

· Ignition switch OFF

· Low fuel temperature

· Too much pressure is applied to EVAP system

This diagnostic service enables the off-board test device to request specific vehicle infor-

mation such as Vehicle Identification Number (VIN) and Calibration IDs.

INSPECTION PROCEDURE

1. Turn ignition switch OFF.

2. Connect "GST" to data link connector (2), which is located under

LH dash panel near the hood opener handle (1).

Revision: May 2007

EC-107

ALBIA0047ZZ
2007 Altima Hybrid

ON BOARD DIAGNOSTIC (OBD) SYSTEM
< FUNCTION DIAGNOSIS >
3. Turn ignition switch ON. 4. Enter the program according to instruction on the screen or in
the operation manual. (*: Regarding GST screens in this section, sample screens are shown.)

[QR25DE]

5. Perform each diagnostic mode according to each service procedure. For further information, see the GST Operation Manual of the tool maker.

SEF398S

SEF416S

Revision: May 2007

EC-108

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
< COMPONENT DIAGNOSIS >
COMPONENT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE

[QR25DE]
A

Description

EC INFOID:0000000001502843

The specification (SP) value indicates the tolerance of the value that is displayed in "SPEC" of "DATA MONI-

TOR" mode of CONSULT-III during normal operation of the Engine Control System. When the value in "SPEC" of "DATA MONITOR" mode is within the SP value, the Engine Control System is confirmed OK. When the C

value in "SPEC" of "DATA MONITOR" mode is NOT within the SP value, the Engine Control System may have

one or more malfunctions.

The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the D MIL.

The SP value will be displayed for the following three items:

· B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-

tion)

· A/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)

· MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)

Component Function Check

F
INFOID:0000000001502844

1.START G Make sure that all of the following conditions are satisfied.

· Vehicle driven distance: More than 5,000 km (3,107 miles)

· Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm2, 14.25 - 15.12 psi) · Atmospheric temperature: 20 - 30°C (68 - 86°F)

· Engine coolant temperature: 75 - 95°C (167 - 203°F)

· Transmission: Warmed-up (After the engine is warmed up to normal operating temperature, drive vehicle for

5 minutes.)

· Engine speed: Idle

>> GO TO 2.

2.PERFORM "SPEC" OF "DATA MONITOR" MODE

With CONSULT-III

NOTE:

Perform "SPEC" in "DATA MONITOR" mode in maximum scale display.

1. Lift up the vehicle. 2. Perform EC-11, "BASIC INSPECTION : Special Repair Requirement".

3. Turn ignition switch ON (READY).

4. Depressed the accelerator pedal and keep it.

5. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated. 6. Select "B/FUEL SCHDL", "A/F ALPHA-B1" and "MAS A/F SE-B1" in "SPEC" of "DATA MONITOR" mode

with CONSULT-III.

7. Make sure that monitor items are within the SP value.

8. Shift the selector lever to P position.

Is the inspection result normal?

YES >> END

NO >> Go to EC-110, "Diagnosis Procedure".

Revision: May 2007

EC-109

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
< COMPONENT DIAGNOSIS >
Diagnosis Procedure
OVERALL SEQUENCE

[QR25DE]
INFOID:0000000001502845

Revision: May 2007

EC-110

PBIB2318E
2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
< COMPONENT DIAGNOSIS >

[QR25DE]
A

DETAILED PROCEDURE
1.CHECK "A/F ALPHA-B1"

PBIB3213E
P

With CONSULT-III 1. Confirm that the testing conditions are met. Refer to EC-109, "Component Function Check". 2. Lift up the vehicle. 3. Turn ignition switch ON (READY). 4. Depressed the accelerator pedal and keep it.

Revision: May 2007

EC-111

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

< COMPONENT DIAGNOSIS >

[QR25DE]

5. Shift the selector lever to N position with engine running. CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated.
6. Select "A/F ALPHA-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the each indication is within the SP value. NOTE: Check "A/F ALPHA-B1" for approximately 1 minute because they may fluctuate. It is NG if the indication is out of the SP value even a little.

Is the measurement value within the SP value?

YES >> GO TO 17. NO-1 >> Less than the SP value: GO TO 2. NO-2 >> More than the SP value: GO TO 3.
2.CHECK "B/FUEL SCHDL"

1. Select "B/FUEL SCHDL" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within the SP value.
2. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> GO TO 4. NO >> More than the SP value: GO TO 19.
3.CHECK "B/FUEL SCHDL"

1. Select "B/FUEL SCHDL" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within the SP value.
2. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> GO TO 6. NO-1 >> More than the SP value: GO TO 6. NO-2 >> Less than the SP value: GO TO 25.
4.CHECK "A/F ALPHA-B1"

1. Turn ignition switch OFF. 2. Disconnect PCV hose, and then plug it. 3. Turn ignition switch ON (READY). 4. Depressed the accelerator pedal and keep it. 5. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 6. Select "A/F ALPHA-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within the SP value. 7. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> GO TO 5. NO >> GO TO 6.
5.CHANGE ENGINE OIL

1. Turn ignition switch OFF. 2. Change engine oil.
NOTE: This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving conditions (such as when engine oil temperature does not rise enough since a journey distance is too short during winter). The symptom will not be detected after changing engine oil or changing driving condition.

>> INSPECTION END
6.CHECK FUEL PRESSURE
Revision: May 2007

EC-112

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
< COMPONENT DIAGNOSIS >

[QR25DE]

Check fuel pressure. (Refer to EC-450, "Inspection".)

Is the inspection result normal?

YES >> GO TO 9.

NO-1 >> Fuel pressure is too high: Replace "fuel filter and fuel pump assembly" and then GO TO 8.

NO-2 >> Fuel pressure is too low: GO TO 7.

7.DETECT MALFUNCTIONING PART

Check fuel hoses and fuel tubes for clogging

Is the inspection result normal?

YES >> Replace "fuel filter and fuel pump assembly" and then GO TO 8.

NO >> Repair or replace and then GO TO 8.
8.CHECK "A/F ALPHA-B1"

1. Turn ignition switch ON (READY).

2. Depressed the accelerator pedal and keep it.

3. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated.

4. Select "A/F ALPHA-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within

the SP value.

5. Shift the selector lever to P position.

Is the measurement value within the SP value?

YES >> INSPECTION END

NO >> GO TO 9.

9.PERFORM POWER BALANCE TEST

1. Perform "POWER BALANCE" in "ACTIVE TEST" mode.

2. Make sure that the each cylinder produces a momentary engine speed drop.

Is the inspection result normal?

YES >> GO TO 12.

NO >> GO TO 10.

10.DETECT MALFUNCTIONING PART

Check the following.

1. Ignition coil and its circuit (Refer to EC-380, "Component Function Check".)

2. Fuel injector and its circuit (Refer to EC-235, "Diagnosis Procedure".)

3. Intake air leakage

4. Low compression pressure (Refer to EM-21, "Compression pressure".)

Is the inspection result normal?

YES >> Replace fuel injector and then GO TO 11.

NO >> Repair or replace malfunctioning part and then GO TO 11.

11.CHECK "A/F ALPHA-B1"

1. Turn ignition switch ON (READY).

2. Depressed the accelerator pedal and keep it.

3. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

4. Select "A/F ALPHA-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within P the SP value.

5. Shift the selector lever to P position.

Is the measurement value within the SP value?

YES >> INSPECTION END NO >> GO TO 12.
12.CHECK A/F SENSOR 1 FUNCTION

Revision: May 2007

EC-113

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
< COMPONENT DIAGNOSIS >
Perform all DTC CONFIRMATION PROCEDURE related with A/F sensor 1. · For DTC P0130, refer to EC-178, "DTC Logic". · For DTC P0131, refer to EC-182, "DTC Logic". · For DTC P0132, refer to EC-185, "DTC Logic". · For DTC P0133, refer to EC-188, "DTC Logic". · For DTC P2A00, refer to EC-365, "DTC Logic".
Is any DTC detected?
YES >> GO TO 15. NO >> GO TO 13.
13.CHECK A/F SENSOR 1 CIRCUIT
Perform DIAGNOSTIC PROCEDURE according to corresponding DTC.

[QR25DE]

>> GO TO 14.
14.CHECK "A/F ALPHA-B1"
1. Lift up the vehicle. 2. Turn ignition switch ON (READY). 3. Depressed the accelerator pedal and keep it. 4. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 5. Select "A/F ALPHA-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the each indication is within the SP value. 6. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> INSPECTION END NO >> GO TO 15.
15.DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. Check pin terminal and connector for damage, and then reconnect it.

>> GO TO 16.
16.CHECK "A/F ALPHA-B1"
1. Lift up the vehicle. 2. Turn ignition switch ON (READY). 3. Depressed the accelerator pedal and keep it. 4. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 5. Select "A/F ALPHA-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within the SP value. 6. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> INSPECTION END NO >> Detect malfunctioning part according to EC-439, "Symptom Table".
17.CHECK "B/FUEL SCHDL"
1. Select "B/FUEL SCHDL" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within the SP value.
2. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> INSPECTION END NO-1 >> More than the SP value: GO TO 18.

Revision: May 2007

EC-114

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
< COMPONENT DIAGNOSIS >
NO-2 >> Less than the SP value: GO TO 25.
18.DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following. - Engine oil level is too high - Engine oil viscosity - Belt tension of power steering, alternator, A/C compressor, etc. is excessive - Noise from engine - Noise from transmission, etc. 2. Check for the cause of insufficient combustion. Refer to the following. - Valve clearance malfunction - Intake valve timing control function malfunction - Camshaft sprocket installation malfunction, etc.

[QR25DE]
A EC
C D

>> Repair or replace malfunctioning part, and then GO TO 30.

19.CHECK INTAKE SYSTEM

Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.

· Crushed air ducts

· Malfunctioning seal of air cleaner element

· Uneven dirt of air cleaner element

· Improper specification of intake air system

Is the inspection result normal?

YES >> GO TO 21.

NO >> Repair or replace malfunctioning part, and then GO TO 20.

20.CHECK "A/F ALPHA-B1", AND "B/FUEL SCHDL"

1. Lift up the vehicle.

2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select "A/F ALPHA-B1" and "B/FUEL SCHDL" in "SPEC" of "DATA MONITOR" mode, and make sure that

the each indication is within the SP value.

6. Shift the selector lever to P position.

Is the measurement value within the SP value?

YES >> INSPECTION END

NO >> "B/FUEL SCHDL" is more, "A/F ALPHA-B1" is less than the SP value: GO TO 21.

21.DISCONNECT AND RECONNECT MASS AIR FLOW SENSOR HARNESS CONNECTOR

1. Turn ignition switch OFF.

2. Disconnect mass air flow sensor harness connector. Check pin terminal and connector for damage and

then reconnect it again.

>> GO TO 22.

22.CHECK "A/F ALPHA-B1"

1. Lift up the vehicle.

2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select "A/F ALPHA-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within

the SP value.

6. Shift the selector lever to P position.

Revision: May 2007

EC-115

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

< COMPONENT DIAGNOSIS >

[QR25DE]

Is the measurement value within the SP value?

YES >> Detect malfunctioning part of mass air flow sensor circuit and repair it. Refer to EC-147, "DTC Logic". Then GO TO 29.
NO >> GO TO 23.
23.CHECK "MAS A/F SE-B1"

1. Depressed the accelerator pedal and keep it. 2. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 3. Select "MAS A/F SE-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within the SP value. 4. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> GO TO 24. NO >> More than the SP value: Replace mass air flow sensor, and then GO TO 29.
24.REPLACE ECM

1. Replace ECM. 2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".

>> GO TO 29.
25.CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following. · Crushed air ducts · Malfunctioning seal of air cleaner element · Uneven dirt of air cleaner element · Improper specification of intake air system
Is the inspection result normal?
YES >> GO TO 27. NO >> Repair or replace malfunctioning part, and then GO TO 26.
26.CHECK "B/FUEL SCHDL"
1. Lift up the vehicle. 2. Turn ignition switch ON (READY). 3. Depressed the accelerator pedal and keep it. 4. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 5. Select "B/FUEL SCHDL" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is within the SP value. 6. Shift the selector lever to P position.
Is the measurement value within the SP value?
YES >> INSPECTION END NO >> Less than the SP value: GO TO 27.
27.CHECK "MAS A/F SE-B1"
1. Lift up the vehicle. 2. Turn ignition switch ON (READY). 3. Depressed the accelerator pedal and keep it. 4. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated.

Revision: May 2007

EC-116

2007 Altima Hybrid

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
< COMPONENT DIAGNOSIS >

[QR25DE]

5. Select "MAS A/F SE-B1" in "SPEC" of "DATA MONITOR" mode, and make sure that the indication is

within the SP value.

6. Shift the selector lever to P position.

Is the measurement value within the SP value?

YES >> GO TO 28.

NO >> Less than the SP value: Replace mass air flow sensor, and then GO TO 30.

28.CHECK INTAKE SYSTEM

Check for the cause of air leak after the mass air flow sensor. Refer to the following.

· Disconnection, looseness, and cracks in air duct

· Looseness of oil filler cap

· Disconnection of oil level gauge

· Open stuck, breakage, hose disconnection, or cracks of PCV valve

· Disconnection or cracks of EVAP purge hose, open stuck of EVAP canister purge volume control solenoid

valve

· Malfunctioning seal of rocker cover gasket

· Disconnection, looseness, or cracks of hoses, such as vacuum hose, connecting to intake air system parts

· Malfunctioning seal of intake air system, etc.

>> GO TO 30.

29.CHECK "A/F ALPHA-B1" AND "B/FUEL SCHDL"

1. Lift up the vehicle.

2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select "A/F ALPHA-B1" and "B/FUEL SCHDL" in "SPEC" of "DATA MONITOR" mode, and make sure that

the indication is within the SP value.

6. Shift the selector lever to P position.

Is the measurement value within the SP value?

YES >> INSPECTION END

NO >> Detect malfunctioning part according to EC-439, "Symptom Table".

30.CHECK "B/FUEL SCHDL"

1. Lift up the vehicle. 2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select "B/FUEL SCHDL" in "SPEC" of "DATA MONITOR" mode, and then make sure that the indication is within the SP value.

6. Shift the selector lever to P position.

Is the measurement value within the SP value?

YES >> INSPECTION END

NO >> Detect malfunctioning part according to EC-439, "Symptom Table".

Revision: May 2007

EC-117

2007 Altima Hybrid

POWER SUPPLY AND GROUND CIRCUIT
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
1.INSPECTION START
1. Turn ignition switch ON (READY). 2. Depress accelerator pedal. Is engine running?
YES >> GO TO 8. NO >> GO TO 2.
2.CHECK ECM POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF and then ON. 2. Check the voltage between ECM harness connector and ground.

[QR25DE]
INFOID:0000000001502846

ECM

Connector

Terminal

Ground

Voltage

E10

Ground

Battery voltage

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Check the following. · IPDM E/R harness connector E18 · 10A fuse (No. 35) · Harness for open or short between ECM and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK GROUND CONNECTION-I
1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 5. NO >> Repair or replace ground connection.
5.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1. Disconnect ECM harness connectors. 2. Check the continuity between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Continuity

12 F14
16

107

Ground

Existed

108

E10

111

112

3. Also check harness for short to power. Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 6.

Revision: May 2007

EC-118

2007 Altima Hybrid

POWER SUPPLY AND GROUND CIRCUIT
< COMPONENT DIAGNOSIS >
6.DETECT MALFUNCTIONING PART
Check the following. · Harness connectors F80, E68 · Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
7.CHECK ECM POWER SUPPLY CIRCUIT-II
1. Reconnect ECM harness connectors. 2. Turn ignition switch ON. 3. Check the voltage between IPDM E/R harness connector and ground.

[QR25DE]
A EC
C D

IPDM E/R

Connector

Terminal

Ground

Voltage

F10

Ground

Battery voltage

Is the inspection result normal?

YES >> Go to EC-380, "Diagnosis Procedure".

NO >> GO TO 8.

8.CHECK ECM POWER SUPPLY CIRCUIT-III

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Check the voltage between ECM harness connector and ground. H

ECM

Ground

Voltage

Connector Terminal

After turning ignition switch OFF, battery volt-

E10

105

Ground age will exist for a few seconds, then drop ap-

proximately 0V.
J Is the inspection result normal?

YES >> GO TO 14.

NO-1 >> Battery voltage does not exist: GO TO 9. NO-2 >> Battery voltage exists for more than a few seconds: GO TO 12.

9.CHECK ECM POWER SUPPLY CIRCUIT-IV

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Check the voltage between ECM harness connector and ground.

ECM

Ground

Voltage

Connector

Terminal

F14

Ground

Battery voltage

N Is the inspection result normal?

YES >> GO TO 10.

NO >> GO TO 12.
10.CHECK ECM POWER SUPPLY CIRCUIT-V

1. Disconnect ECM harness connector.

2. Disconnect IPDM E/R harness connector E18.

3. Check the continuity between ECM harness connector and IPDM E/R harness connector.

ECM

Connector

Terminal

IPDM E/R

Connector

Terminal

Continuity

E10

105

E18

Existed

4. Also check harness for short to ground and short to power.

Revision: May 2007

EC-119

2007 Altima Hybrid

POWER SUPPLY AND GROUND CIRCUIT
< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> GO TO 17. NO >> GO TO 11.
11.DETECT MALFUNCTIONING PART
Check the following. · Junction block connectors E44, E45 · Harness for open or short between ECM and IPDM E/R

[QR25DE]

>> Repair open circuit or short to ground or short to power in harness or connectors.
12.CHECK ECM POWER SUPPLY CIRCUIT-VI
1. Disconnect ECM harness connector. 2. Disconnect IPDM E/R harness connector F10. 3. Check the continuity between ECM harness connector and IPDM E/R harness connector.

ECM

Connector

Terminal

IPDM E/R

Connector

Terminal

Continuity

F14

F10

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 13. NO >> Repair open circuit or short to ground or short power in harness or connectors.
13.CHECK 15A FUSE

1. Disconnect 15A fuse (No. 42) from IPDM E/R. 2. Check 15A fuse.
Is the inspection result normal?
YES >> GO TO 17. NO >> Replace 15A fuse (No. 42).
14.CHECK GROUND CONNECTION-II

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 15. NO >> Repair or replace ground connection.
15.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II

1. Disconnect ECM harness connector. 2. Check the continuity between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Continuity

12 F14
16

107

Ground

Existed

108

E10

111

112

3. Also check harness for short to power. Is the inspection result normal?
YES >> GO TO 17.

Revision: May 2007

EC-120

2007 Altima Hybrid

POWER SUPPLY AND GROUND CIRCUIT
< COMPONENT DIAGNOSIS > NO >> GO TO 16.
16.DETECT MALFUNCTIONING PART
Check the following. · Harness or connectors F80, E68 · Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
17.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident". Is the inspection result normal?
YES >> Replace IPDM E/R. NO >> Repair open circuit or short to power in harness or connectors.

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-121

2007 Altima Hybrid

U0129, U1022 CAN COMM CIRCUIT
< COMPONENT DIAGNOSIS >
U0129, U1022 CAN COMM CIRCUIT
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001502847

DTC No.

Trouble diagnosis name

U0129 U1022

Lost communication with brake ECU

DTC detecting condition

Possible cause

CAN communication signal of OBD (emission related diagnosis) is not received between brake ECU and ECM for 1 second or more.
CAN communication signal other than OBD (emission related diagnosis) is not received between brake ECU and ECM for 1 second or more.

· HEV SYSTEM CAN communication line between brake ECU and ECM
· HEV SYSTEM CAN communication line short

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC. Is DTC detected?
YES >> EC-122, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

INFOID:0000000001502848

Go to LAN-4, "Description".

Revision: May 2007

EC-122

2007 Altima Hybrid

U0293, U1020 CAN COMM CIRCUIT
< COMPONENT DIAGNOSIS >
U0293, U1020 CAN COMM CIRCUIT
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
A
INFOID:0000000001502849
EC

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

U0293 U1020

CAN communication signal of OBD (emission related

diagnosis) is not received between HV ECU and

· HEV SYSTEM CAN communication

Lost communication ECM for 1 second or more.

line between HV ECU and ECM

with HV ECU

CAN communication signal other than OBD (emis- · HEV SYSTEM CAN communication

sion related diagnosis) is not received between HV

line short

ECU and ECM for 1 second or more.

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE F 1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC.

Is DTC detected?

YES >> EC-123, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

H
INFOID:0000000001502850

Go to LAN-4, "Description". I

Revision: May 2007

EC-123

2007 Altima Hybrid

U0400, U1021 CAN COMM DATA
< COMPONENT DIAGNOSIS >
U0400, U1021 CAN COMM DATA
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001502851

DTC No. U0400 U1021

Trouble diagnosis name
Invalid data received from hybrid vehicle control ECU

DTC detecting condition

Possible cause

SUM data on CAN signal of OBD (emission related diagnosis) from HV ECU is different from SUM data calculated by ECM.
SUM data on CAN signal other than OBD (emission related diagnosis) from HV ECU is different from SUM data calculated by ECM.

· Harness or connectors (HEV SYSTEM CAN communication line is open or shorted)
· ECM · HV ECU

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC.
Is DTC detected?
YES >> Go to EC-124, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502852

1.CHECK HEV SYSTEM CAN COMMUNICATION CIRCUIT

Refer to LAN-53, "Trouble Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace.
2.REPLACE ECM

1. Replace ECM. 2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".

>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III 1. Turn ignition switch ON. 2. Select "SELF-DIAG RESULTS" mode with CONSULT-III. 3. Touch "ERASE". 4. Perform DTC CONFIRMATION PROCEDURE.
See EC-124, "DTC Logic". 5. Check DTC.
With GST 1. Turn ignition switch ON. 2. Select "Service $04" with GST. 3. Perform DTC CONFIRMATION PROCEDURE.
See EC-124, "DTC Logic". 4. Check DTC.
Is the DTC U0400 or U1021 displayed again?
YES >> GO TO 4. NO >> INSPECTION END
4.REPLACE HV ECU

Revision: May 2007

EC-124

2007 Altima Hybrid

U0400, U1021 CAN COMM DATA
< COMPONENT DIAGNOSIS >

[QR25DE]

1. Replace HV ECU.
2. Go to HBC-12, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require- A ment".

>> INSPECTION END

Revision: May 2007

EC-125

2007 Altima Hybrid

U0418, U1023 CAN COMM DATA
< COMPONENT DIAGNOSIS >
U0418, U1023 CAN COMM DATA
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001502853

DTC No. U0418 U1023

Trouble diagnosis name
Invalid data received from brake ECU

DTC detecting condition

Possible cause

SUM data on CAN signal of OBD (emission related diagnosis) from brake ECU is different from SUM data calculated by ECM.
SUM data on CAN signal other than OBD (emission related diagnosis) from brake ECU is different from SUM data calculated by ECM.

· Harness or connectors (HEV SYSTEM CAN communication line is open or shorted)
· ECM · Brake ECU

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC.
Is DTC detected?
YES >> Go to EC-126, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502854

1.CHECK HEV SYSTEM CAN COMMUNICATION CIRCUIT

Refer to LAN-53, "Trouble Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace.
2.REPLACE ECM

1. Replace ECM. 2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".

>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III 1. Turn ignition switch ON. 2. Select "SELF-DIAG RESULTS" mode with CONSULT-III. 3. Touch "ERASE". 4. Perform DTC CONFIRMATION PROCEDURE.
See EC-126, "DTC Logic". 5. Check DTC.
With GST 1. Turn ignition switch ON. 2. Select "Service $04" with GST. 3. Perform DTC CONFIRMATION PROCEDURE.
See EC-126, "DTC Logic". 4. Check DTC.
Is the DTC U0418 or U1023 displayed again?
YES >> GO TO 4. NO >> INSPECTION END
4.REPLACE BRAKE ECU

Revision: May 2007

EC-126

2007 Altima Hybrid

U0418, U1023 CAN COMM DATA
< COMPONENT DIAGNOSIS > 1. Replace brake ECU. 2. Go to BRC-190, "Exploded View".
>> INSPECTION END

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-127

2007 Altima Hybrid

U1000, U1001 CAN COMM CIRCUIT
< COMPONENT DIAGNOSIS >
U1000, U1001 CAN COMM CIRCUIT

[QR25DE]

Description

INFOID:0000000001502855

DTC Logic

INFOID:0000000001502856

DTC DETECTION LOGIC

DTC No. U1000 U1001

Trouble diagnosis name
CAN communication line

DTC detecting condition

Possible cause

When ECM is not transmitting or receiving CAN communication signal of OBD (emission related diagnosis) for 2 seconds or more.
When ECM is not transmitting or receiving CAN communication signal other than OBD (emission related diagnosis) for 2 seconds or more.

· Harness or connectors (CAN communication line is open or shorted)

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC. Is DTC detected?
YES >> EC-128, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

INFOID:0000000001502857

Go to LAN-16, "Trouble Diagnosis Flow Chart".

Revision: May 2007

EC-128

2007 Altima Hybrid

U1010 CONTROL UNIT (CAN)
< COMPONENT DIAGNOSIS >
U1010 CONTROL UNIT (CAN)
Description

[QR25DE]
A
INFOID:0000000001502858

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul- EC tiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. C Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

INFOID:0000000001502859

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name

U1010

CAN controller

DTC detecting condition
When detecting error during the initial diagnosis of CAN controller of ECM.

· ECM

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC. Is DTC detected?
YES >> Go to EC-129, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

E
Possible cause
F
G
H
I
INFOID:0000000001502860

1.INSPECTION START J

With CONSULT-III

1. Turn ignition switch ON.

2. Select "SELF-DIAG RESULTS" mode with CONSULT-III. 3. Touch "ERASE".

4. Perform DTC CONFIRMATION PROCEDURE.

See EC-129, "DTC Logic".

5. Check DTC.

With GST

1. Turn ignition switch ON.

2. Select "Service $04" with GST.

3. Perform DTC CONFIRMATION PROCEDURE.

See EC-129, "DTC Logic".

4. Check DTC.

Is the DTC U1010 displayed again?

YES >> GO TO 2.

NO >> INSPECTION END

2.REPLACE ECM

1. Replace ECM. 2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require- P
ment".

>> INSPECTION END

Revision: May 2007

EC-129

2007 Altima Hybrid

U1011 CONTROL UNIT (CAN)
< COMPONENT DIAGNOSIS >
U1011 CONTROL UNIT (CAN)
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001502861

DTC No.

Trouble diagnosis name

U1011

HEV SYSTEM CAN controller

DTC detecting condition
When detecting error during the initial diagnosis of HEV SYSTEM CAN controller of ECM.

· ECM

Possible cause

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC.
Is DTC detected?
YES >> Go to EC-130, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502862

1.INSPECTION START

With CONSULT-III 1. Turn ignition switch ON. 2. Select "SELF-DIAG RESULTS" mode with CONSULT-III. 3. Touch "ERASE". 4. Perform DTC CONFIRMATION PROCEDURE.
See EC-130, "DTC Logic". 5. Check DTC.
With GST 1. Turn ignition switch ON. 2. Select "Service $04" with GST. 3. Perform DTC CONFIRMATION PROCEDURE.
See EC-130, "DTC Logic". 4. Check DTC.
Is the DTC U1011 displayed again?
YES >> GO TO 2. NO >> INSPECTION END
2.REPLACE ECM

1. Replace ECM. 2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".

>> INSPECTION END

Revision: May 2007

EC-130

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0011 IVT CONTROL
DTC Logic

P0011 IVT CONTROL

[QR25DE]
A
INFOID:0000000001502863

DTC DETECTION LOGIC

NOTE:

If DTC P0011 is displayed with DTC P0075, first perform the trouble diagnosis for EC-314, "DTC Logic".

DTC No.

Trouble diagnosis name

Detecting condition

C
Possible cause

· Crankshaft position sensor (POS)

· Camshaft position sensor (PHASE)

· Intake valve control solenoid valve

P0011

Intake valve timing control performance

There is a gap between angle of target and phase-control angle degree.

· Accumulation of debris to the signal pick-up

portion of the camshaft

· Timing chain installation

· Foreign matter caught in the oil groove for in-

take valve timing control
F

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING G If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is between 10V and 16V at I idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE-I

With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON (READY) and select "DATA MONITOR" mode with CONSULT-III.

4. Maintain the following conditions for at least 10 consecutive seconds. Hold the accelerator pedal as

steady as possible.

VHCL SPEED SE

70 km/h (43 mph) or more

ENG SPEED

800 - 2,000 rpm

COOLAN TEMP/S

80°C (176°F) or more

Shift lever

D position

CAUTION:

Always drive at a safe speed.

5. Stop vehicle.

6. Check 1st trip DTC.

With GST

Follow the procedure "With CONSULT-III" above.

Is 1st trip DTC detected?

YES >> Go to EC-132, "Diagnosis Procedure" NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II

Revision: May 2007

EC-131

2007 Altima Hybrid

P0011 IVT CONTROL
< COMPONENT DIAGNOSIS >
With CONSULT-III 1. Maintain the following conditions for at least 10 consecutive seconds.

ENG SPEED

1,700 - 3,175 rpm (A constant rotation is maintained.)

COOLAN TEMP/S

More than 70°C (221°F)

Shift lever

D position

Driving location uphill

Driving vehicle uphill (Increased engine load will help maintain the driving conditions required for this test.)

CAUTION: Always drive at a safe speed. 2. Check 1st trip DTC. With GST Follow the procedure "With CONSULT-III" above.
Is 1st trip DTC detected?
YES >> Go to EC-132, "Diagnosis Procedure" NO >> INSPECTION END

Diagnosis Procedure

1.CHECK OIL PRESSURE WARNING LAMP

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine. 2. Check oil pressure warning lamp and confirm it is not illumi-
nated.
Is oil pressure warning lamp illuminated?
YES >> Go to LU-8, "Inspection". NO >> GO TO 2.

2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-133, "Component Inspection". Is the inspection result normal?
YES >> GO TO 3. NO >> Replace intake valve timing control solenoid valve.
3.CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-251, "Component Inspection". Is the inspection result normal?
YES >> GO TO 4. NO >> Replace crankshaft position sensor (POS).
4.CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-255, "Component Inspection". Is the inspection result normal?
YES >> GO TO 5. NO >> Replace camshaft position sensor (PHASE).
5.CHECK CAMSHAFT (INTAKE)
Check the following.

Revision: May 2007

EC-132

[QR25DE]
INFOID:0000000001502864 PBIA8559J
2007 Altima Hybrid

P0011 IVT CONTROL
< COMPONENT DIAGNOSIS >
· Accumulation of debris to the signal plate of camshaft (1) rear end · Chipping signal plate of camshaft rear end
Is the inspection result normal?
YES >> GO TO 6. NO >> Remove debris and clean the signal plate of camshaft
rear end or replace camshaft.

[QR25DE]
A EC
C

6.CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misaligned. Are there any service records that may cause timing chain misaligned?
YES >> Check timing chain installation. Refer to EM-50, "Removal and Installation". NO >> GO TO 7.
7.CHECK LUBRICATION CIRCUIT
Refer to EM-46, "Inspection After Installation". Is the inspection result normal?
YES >> GO TO 8. NO >> Clean lubrication line.
8.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

JMBIA0096ZZ
D E
F G H

>> INSPECTION END

Component Inspection

INFOID:0000000001502865

1.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I

1. Turn ignition switch OFF.

2. Disconnect intake valve timing control solenoid valve harness connector.

3. Check resistance between intake valve timing control solenoid valve terminals as follows.

Terminals

Resistance

1 and 2

6.7 - 7.7

1 or 2 and ground

(Continuity should not exist)

Is the inspection result normal?
YES >> GO TO 2. NO >> Replace intake valve timing control solenoid valve.
2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II

1. Remove intake valve timing control solenoid valve. 2. Provide 12V DC between intake valve timing control solenoid
valve terminals 1 and 2, and then interrupt it. Make sure that the plunger moves as shown in the figure. CAUTION: Do not apply 12V DC continuously for 5 seconds or more. Doing so may result in damage to the coil in intake valve timing control solenoid valve. NOTE: Always replace O-ring when intake valve timing control solenoid valve is removed.
Is the inspection result normal?

Revision: May 2007

EC-133

L M N O P
JMBIA0097ZZ
2007 Altima Hybrid

P0011 IVT CONTROL
< COMPONENT DIAGNOSIS >
YES >> INSPECTION END NO >> Replace intake valve timing control solenoid valve.

[QR25DE]

Revision: May 2007

EC-134

2007 Altima Hybrid

P0031, P0032 A/F SENSOR 1 HEATER
< COMPONENT DIAGNOSIS >
P0031, P0032 A/F SENSOR 1 HEATER
Description
SYSTEM DESCRIPTION

[QR25DE]
A
INFOID:0000000001502866
EC

Sensor

Input Signal to ECM

ECM function

Actuator

Camshaft position sensor (PHASE) Crankshaft position sensor (POS)
Mass air flow sensor

Engine speed Amount of intake air

Air fuel ratio (A/F) sensor 1 Air fuel ratio (A/F) sensor 1

heater control

heater

The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating D

condition to keep the temperature of A/F sensor 1 element at the specified range.

DTC Logic

INFOID:0000000001502867

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name

DTC detecting condition

F
Possible cause

The current amperage in the A/F sensor 1 heater · Harness or connectors

P0031

Air fuel ratio (A/F) sensor circuit is out of the normal range. 1 heater control circuit low (An excessively low voltage signal is sent to ECM

(The A/F sensor 1 heater circuit is open or shorted.)

through the A/F sensor 1 heater.)

· A/F sensor 1 heater

P0032

Air fuel ratio (A/F) sensor 1 heater control circuit high

The current amperage in the A/F sensor 1 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.)

· Harness or connectors (The A/F sensor 1 heater circuit is shorted.)
· A/F sensor 1 heater

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- J

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than between 11V at

idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 10 seconds.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-135, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

O
INFOID:0000000001502868

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace ground connection.

Revision: May 2007

EC-135

2007 Altima Hybrid

P0031, P0032 A/F SENSOR 1 HEATER
< COMPONENT DIAGNOSIS >
2.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect air fuel ratio (A/F) sensor 1 harness connector. 2. Turn ignition switch ON. 3. Check the voltage between A/F sensor 1 harness connector and ground.

[QR25DE]

A/F sensor 1

Connector

Terminal

Ground

Voltage

F44

Ground

Battery voltage

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Check the following. · IPDM E/R harness connector F10 · 15A fuse (No. 37) · Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.
4.CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

A/F sensor 1

Connector

Terminal

ECM

Connector

Terminal

Continuity

F44

F14

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK A/F SENSOR 1 HEATER

Refer to EC-137, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 6.
6.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace air fuel ratio (A/F) sensor 1. CAUTION: · Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one. · Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Perform GI-42, "Intermittent Incident".

>> Repair or replace.

Revision: May 2007

EC-136

2007 Altima Hybrid

P0031, P0032 A/F SENSOR 1 HEATER
< COMPONENT DIAGNOSIS >
Component Inspection
1.CHECK AIR FUEL RATIO (A/F) SENSOR 1
1. Turn ignition switch OFF. 2. Disconnect A/F sensor 1 harness connector. 3. Check resistance between A/F sensor 1 terminals as follows.

[QR25DE]
INFOID:0000000001502869
A
EC

Terminals

Resistance

3 and 4

1.8 - 2.44 [at 25°C (77°F)]

3 and 1, 2

4 and 1, 2

(Continuity should not exist)

Is the inspection result normal?

YES >> INSPECTION END

NO >> GO TO 2.

2.REPLACE AIR FUEL RATIO (A/F) SENSOR 1 F Replace air fuel ratio (A/F) sensor 1.

CAUTION:

· Discard any sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard

surface such as a concrete floor; use a new one.

· Before installing new sensor, clean exhaust system threads using Heated Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Revision: May 2007

EC-137

2007 Altima Hybrid

P0037, P0038 HO2S2 HEATER
< COMPONENT DIAGNOSIS >
P0037, P0038 HO2S2 HEATER
Description
SYSTEM DESCRIPTION

[QR25DE]
INFOID:0000000001502870

Sensor

Input signal to ECM

ECM function

Actuator

Camshaft position sensor (PHASE) Crankshaft position sensor (POS)
Engine coolant temperature sensor

Engine speed Heated oxygen sensor 2
Engine coolant temperature heater control

Heated oxygen sensor 2 heater

Mass air flow sensor

Amount of intake air

The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.

OPERATION

Engine speed Above 3,600 rpm More than 3 minutes after engine stopped. Below 3,600 rpm after the following conditions are met. · Engine: After warming up · Driving for 3 minutes at a speed of 80 km/h (50 MPH) or more
(Keep the vehicle speed as steady as possible during the cruising.)
DTC Logic
DTC DETECTION LOGIC

Heated oxygen sensor 2 heater OFF ON
INFOID:0000000001502871

DTC No. P0037 P0038

Trouble diagnosis name
Heated oxygen sensor 2 heater control circuit low
Heated oxygen sensor 2 heater control circuit high

DTC detecting condition

Possible cause

The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)

· Harness or connectors (The heated oxygen sensor 2 heater circuit is open or shorted.)
· Heated oxygen sensor 2 heater

The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)

· Harness or connectors (The heated oxygen sensor 2 heater circuit is shorted.)
· Heated oxygen sensor 2 heater

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON.

Revision: May 2007

EC-138

2007 Altima Hybrid

P0037, P0038 HO2S2 HEATER
< COMPONENT DIAGNOSIS >

[QR25DE]

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON (READY).

6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE:

Keep the vehicle speed as steady as possible during the cruising.

7. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-139, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

D
INFOID:0000000001502872

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK HO2S2 POWER SUPPLY CIRCUIT

1. Disconnect heated oxygen sensor 2 harness connector.

2. Turn ignition switch ON.

3. Check the voltage between HO2S2 harness connector and ground.

HO2S2

Ground

Voltage

Connector

Terminal

F42

Ground

Battery voltage

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

· IPDM E/R connector F10

· 15A fuse (No. 37)

· Harness for open or short between heated oxygen sensor 2 and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between HO2S2 harness connector and ECM harness connector.

HO2S2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F42

F14

Existed

Revision: May 2007

EC-139

2007 Altima Hybrid

P0037, P0038 HO2S2 HEATER
< COMPONENT DIAGNOSIS >
Refer to EC-140, "Component Inspection". Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 6.
6.REPLACE HEATED OXYGEN SENSOR 2

[QR25DE]

Replace heated oxygen sensor 2. CAUTION: · Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one. · Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection
1.CHECK HEATED OXYGEN SENSOR 2 HEATER
1. Turn ignition switch OFF. 2. Disconnect heated oxygen sensor 2 harness connector. 3. Check resistance between HO2S2 terminals as follows.

INFOID:0000000001502873

Terminals

Resistance

2 and 3

3.3 - 4.4 [at 25°C (77°F)]

1 and 2, 3, 4 4 and 1, 2, 3

(Continuity should not exist)

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.REPLACE HEATED OXYGEN SENSOR 2

>> INSPECTION END

Revision: May 2007

EC-140

2007 Altima Hybrid

P0043, P0044 HO2S3 HEATER
< COMPONENT DIAGNOSIS >
P0043, P0044 HO2S3 HEATER
Description
SYSTEM DESCRIPTION

[QR25DE]
A
INFOID:0000000001502874
EC

Sensor

Input signal to ECM

ECM function

Actuator

Camshaft position sensor (PHASE)

Engine speed

Crankshaft position sensor (POS) Engine coolant temperature sensor

Engine coolant temperature

Heated oxygen sensor 3 heater control

Heated oxygen sensor 3 heater

Mass air flow sensor

Amount of intake air

The ECM performs ON/OFF control of the heated oxygen sensor 3 heater corresponding to the engine speed,

amount of intake air and engine coolant temperature.

OPERATION

Heated oxygen sensor 3 heater

OFF
G

ON
H

INFOID:0000000001502875
I

DTC No.

Trouble diagnosis name

DTC detecting condition

J
Possible cause

P0043

Heated oxygen sensor 3 heater control circuit low

The current amperage in the heated oxygen sensor 3 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 3 heater.)

· Harness or connectors (The heated oxygen sensor 3 heater circuit is open or shorted.)
· Heated oxygen sensor 3 heater

P0044

Heated oxygen sensor 3 heater control circuit high

The current amperage in the heated oxygen sensor 3 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the heated oxygen sensor 3 heater.)

· Harness or connectors (The heated oxygen sensor 3 heater circuit is shorted.)
· Heated oxygen sensor 3 heater

M
DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- N

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at idle.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.

Revision: May 2007

EC-141

2007 Altima Hybrid

P0043, P0044 HO2S3 HEATER

< COMPONENT DIAGNOSIS >

[QR25DE]

2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY). 6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: Keep the vehicle speed as steady as possible during the cruising. 7. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-142, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502876

1.CHECK GROUND CONNECTION

1. Disconnect heated oxygen sensor 3 harness connector. 2. Turn ignition switch ON. 3. Check the voltage between HO2S3 harness connector and ground.

HO2S3 Connector Terminal

Ground

Voltage

F102

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors F58, F101 · IPDM E/R harness connector F10 · 15A fuse (No. 37) · Harness for open or short between heated oxygen sensor 3 and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK HO2S3 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check harness continuity between HO2S3 harness connector and ECM harness connector.

HO2S3

ECM

Connector Terminal Connector Terminal

Continuity

F102

F14

Existed

4. Also check harness for short to ground and short to power. Is the inspection result normal?
YES >> GO TO 6.

Revision: May 2007

EC-142

2007 Altima Hybrid

P0043, P0044 HO2S3 HEATER
< COMPONENT DIAGNOSIS >
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following. · Harness connectors F58, F101 · Harness for open or short between heated oxygen sensor 3 and ECM

[QR25DE]
A EC

>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK HEATED OXYGEN SENSOR 3

Refer to EC-143, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 8.

NO >> GO TO 7.

7.REPLACE HEATED OXYGEN SENSOR 3

Replace heated oxygen sensor 3.

CAUTION: · Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7

in) onto a hard surface such as a concrete floor; use a new one.

· Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

8.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident". I
>> INSPECTION END

Component Inspection
1.CHECK HEATED OXYGEN SENSOR 3 HEATER

INFOID:0000000001502877

1. Turn ignition switch OFF.

2. Disconnect heated oxygen sensor 3 harness connector.

3. Check resistance between HO2S3 terminals as follows.

Terminals

Resistance

2 and 3

3.3 - 4.4 [at 25°C (77°F)]

1 and 2, 3, 4

4 and 1, 2, 3

(Continuity should not exist)

Is the inspection result normal? N
YES >> INSPECTION END

NO >> GO TO 2.

2.REPLACE HEATED OXYGEN SENSOR 3

Replace heated oxygen sensor 3.

CAUTION:

· Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 P in) onto a hard surface such as a concrete floor; use a new one.

· Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Revision: May 2007

EC-143

2007 Altima Hybrid

P0075 IVT CONTROL SOLENOID VALVE
< COMPONENT DIAGNOSIS >
P0075 IVT CONTROL SOLENOID VALVE
Description
Intake valve timing control solenoid valve is activated by ON/OFF pulse duty (ratio) signals from the ECM. The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow. The longer pulse width advances valve angle. The shorter pulse width retards valve angle. When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001502878
JMBIA0098GB INFOID:0000000001502879

DTC No. Trouble diagnosis name

DTC detecting condition

P0075

Intake valve timing control solenoid valve circuit

An improper voltage is sent to the ECM through intake valve timing control solenoid valve.

Possible cause
· Harness or connectors (Intake valve timing control solenoid valve circuit is open or shorted.)
· Intake valve timing control solenoid valve

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

>> GO TO2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for 5 seconds. 2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-144, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502880

1.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF. 2. Disconnect intake valve timing control solenoid valve harness connector. 3. Turn ignition switch ON. 4. Check the voltage between intake valve timing control solenoid valve harness connector and ground.

IVT control solenoid valve

Connector

Terminal

Ground

F59

Ground

Is the inspection result normal? YES >> GO TO 2.

Revision: May 2007

Voltage Battery voltage
EC-144

2007 Altima Hybrid

P0075 IVT CONTROL SOLENOID VALVE
< COMPONENT DIAGNOSIS >

[QR25DE]

NO >> Repair open circuit or short to ground or short to power in harness or connectors.
2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN A

AND SHORT

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector.

3. Check the continuity between intake valve timing control solenoid valve harness connector and ECM har-

ness connector.

IVT control solenoid valve

ECM

Continuity

Connector

Terminal

Connector

Terminal

F59

F13

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 3.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

3.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to EC-145, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 4.

NO >> Replace intake valve timing control solenoid valve.

4.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Component Inspection
1.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I

INFOID:0000000001502881
J

1. Turn ignition switch OFF.

2. Disconnect intake valve timing control solenoid valve harness connector.

3. Check resistance between intake valve timing control solenoid valve terminals as follows.

Terminals

Resistance

1 and 2

6.7 - 7.7

1 or 2 and ground

(Continuity should not exist)

Is the inspection result normal?

YES >> GO TO 2.

NO >> Replace intake valve timing control solenoid valve.

2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II

1. Remove intake valve timing control solenoid valve.

Revision: May 2007

EC-145

2007 Altima Hybrid

P0075 IVT CONTROL SOLENOID VALVE
< COMPONENT DIAGNOSIS >
2. Provide 12V DC between intake valve timing control solenoid valve terminals 1 and 2, and then interrupt it. Make sure that the plunger moves as shown in the figure. CAUTION: Do not apply 12V DC continuously for 5 seconds or more. Doing so may result in damage to the coil in intake valve timing control solenoid valve. NOTE: Always replace O-ring when intake valve timing control solenoid valve is removed.
Is the inspection result normal?
YES >> INSPECTION END NO >> Replace intake valve timing control solenoid valve.

[QR25DE]
JMBIA0097ZZ

Revision: May 2007

EC-146

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0101 MAF SENSOR

P0101 MAF SENSOR

Description

The mass air flow sensor (1) is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. The mass air flow sensor controls the temperature of the hot wire to a certain amount. The heat generated by the hot wire is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the electric current supplied to hot wire is changed to maintain the temperature of the hot wire as air flow increases. The ECM detects the air flow by means of this current change.

[QR25DE]
A
INFOID:0000000001502882
EC
C
D

DTC Logic
DTC DETECTION LOGIC

PBIA9559J

INFOID:0000000001502883

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause
G
· Harness or connectors

(The sensor circuit is open or

A high voltage from the sensor is sent to ECM

shorted.)

under light load driving condition.

· Mass air flow sensor

· EVAP control system pressure

sensor

P0101

Mass air flow sensor circuit range/performance

· Harness or connectors

(The sensor circuit is open or

shorted.)

A low voltage from the sensor is sent to ECM un- · Intake air leaks

der heavy load driving condition.

· Mass air flow sensor

· EVAP control system pressure

sensor

DTC CONFIRMATION PROCEDURE

· Intake air temperature sensor
K

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- L

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating O temperature.

2. Wait at least 10 seconds at idle speed.

3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-149, "Diagnosis Procedure". NO-1 >> With CONSULT-III: GO TO 3. NO-2 >> With GST: GO TO 5.
3.CHECK MASS AIR FLOW SENSOR FUNCTION

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.

Revision: May 2007

EC-147

2007 Altima Hybrid

P0101 MAF SENSOR
< COMPONENT DIAGNOSIS >
2. Select "DATA MONITOR" mode with CONSULT-III. 3. Check the voltage of "MAS A/F SE-B1" with "DATA MONITOR". 4. Increases engine speed to about 2,500 rpm. 5. Monitor the linear voltage rise in response to engine speed
increases.
Is the inspection result normal?
YES >> GO TO 4. NO >> Go to EC-149, "Diagnosis Procedure".

[QR25DE]

4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1. Turn ignition switch OFF. 2. Turn ignition switch ON (READY) and drive vehicle. 3. Maintain the following conditions for at least 10 consecutive seconds.

PBIB3457E

ENG SPEED

More than 2,000 rpm

THRTL SEN 1-B1

More than 3V

THRTL SEN 2-B1

More than 3V

Shift lever

Suitable position

Driving location

Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test.

CAUTION: Always drive vehicle at a safe speed. 4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-149, "Diagnosis Procedure". NO >> INSPECTION END
5.PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B

Perform component function check. Refer to EC-148, "Component Function Check". NOTE: Use component function check to check the overall function of the mass air flow sensor circuit. During this check, a DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-149, "Diagnosis Procedure".

Component Function Check

INFOID:0000000001502884

1.PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B

With GST 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature.

Revision: May 2007

EC-148

2007 Altima Hybrid

P0101 MAF SENSOR
< COMPONENT DIAGNOSIS >
2. Select Service $01 with GST. 3. Check the mass air flow sensor signal with Service $01. 4. Check for linear mass air flow sensor signal value rise in
response to increases to about 2,500 rpm in engine speed.
Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-149, "Diagnosis Procedure".

[QR25DE]
A EC
C

Diagnosis Procedure

1.INSPECTION START

Confirm the detected malfunction (A or B). Refer to EC-147, "DTC Logic".

Which malfunction is detected?

>> GO TO 3.

>> GO TO 2.

2.CHECK INTAKE SYSTEM

Check the following for connection. · Air duct · Vacuum hoses · Intake air passage between air duct and intake manifold
Is the inspection result normal?
YES >> GO TO 3. NO >> Reconnect the parts.
3.CHECK GROUND CONNECTION

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 4. NO >> Repair or replace ground connection.
4.CHECK MAF SENSOR POWER SUPPLY CIRCUIT

1. Disconnect mass air flow (MAF) sensor harness connector. 2. Turn ignition switch ON. 3. Check the voltage between MAF sensor harness connector and ground.

SEF534P

INFOID:0000000001502885
E

G H

I J

K L

MAF sensor

Connector

Terminal

Ground

Voltage

F31

Ground

Battery voltage

Is the inspection result normal?

YES >> GO TO 6.

NO >> GO TO 5.

5.DETECT MALFUNCTIONING PART

Check the following. · Junction block connector E44 · Harness for open or short between mass air flow sensor and ECM · Harness for open or short between mass air flow sensor and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

Revision: May 2007

EC-149

2007 Altima Hybrid

P0101 MAF SENSOR
< COMPONENT DIAGNOSIS >
6.CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

[QR25DE]

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between MAF sensor harness connector and ECM harness connector.

MAF sensor

Connector

Terminal

ECM

Connector

Terminal

Continuity

F31

F13

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 7. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between MAF sensor harness connector and ECM harness connector.

MAF sensor

Connector

Terminal

ECM

Connector

Terminal

Continuity

F31

F13

Existed

2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 8. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK INTAKE AIR TEMPERATURE SENSOR

Check intake air temperature sensor. Refer to EC-163, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 9. NO >> Replace mass air flow sensor (with intake air temperature sensor).
9.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to EC-284, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 10. NO >> Replace EVAP control system pressure sensor.
10.CHECK MASS AIR FLOW SENSOR

Refer to EC-150, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 11. NO >> Replace mass air flow sensor.
11.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection
1.CHECK MASS AIR FLOW SENSOR-I
With CONSULT-III 1. Turn ignition switch OFF.
Revision: May 2007

EC-150

INFOID:0000000001502886
2007 Altima Hybrid

P0101 MAF SENSOR
< COMPONENT DIAGNOSIS >
2. Reconnect all harness connectors disconnected. 3. Lift up the vehicle. 4. Turn ignition switch ON. 5. Connect CONSULT-III and select "DATA MONITOR" mode. 6. Select "MAS A/F SE-B1" and check indication.

[QR25DE]
A EC

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Ignition switch ON Approx. 0.4V

7. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

8. Depress the accelerator pedal and keep it.

9. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

10. Select "MAS A/F SE-B1" in "DATA MONITOR" and check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Idle (Engine is warmed-up to normal operating temperature.) 0.9 - 1.2V

11. Shift the selector lever to P position.

12. Fully depress the accelerator pedal and keep it.

13. Check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.5 - 1.8V

14. Fully release accelerator pedal then fully depress it.

15. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.

Without CONSULT-III

1. Turn ignition switch OFF.

2. Reconnect all harness connectors disconnected.

3. Lift up the vehicle.

4. Turn ignition switch ON.

5. Check the voltage between ECM harness connector and ground.

ECM

Ground

Condition

Voltage

Connector

Terminal

F13

58 (MAF sensor signal)

Ground

Ignition switch ON

Approx. 0.4V

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

7. Depress the accelerator pedal and keep it. 8. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

9. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

P
Voltage

F13

58 (MAF sensor signal)

Ground

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.2V

10. Shift the selector lever to P position. 11. Fully depress the accelerator pedal and keep it. 12. Check the voltage between ECM harness connector and ground.

Revision: May 2007

EC-151

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0101 MAF SENSOR

[QR25DE]

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

58 (MAF sensor signal)

Ground

2,500 rpm (Engine is warmed-up to normal operating temperature.)

1.5 - 1.8V

13. Fully release accelerator pedal then fully depress it. 14. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.
Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 2.
2.CHECK FOR THE CAUSE OF UNEVEN AIR FLOW THROUGH MASS AIR FLOW SENSOR

1. Turn ignition switch OFF. 2. Check for the cause of uneven air flow through mass air flow sensor. Refer to following. - Crushed air ducts - Malfunctioning seal of air cleaner element - Uneven dirt of air cleaner element - Improper specification of intake air system parts
Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.CHECK MASS AIR FLOW SENSOR-II

With CONSULT-III 1. Repair or replace malfunctioning part. 2. Lift up the vehicle. 3. Turn ignition switch ON. 4. Connect CONSULT-III and select "DATA MONITOR" mode. 5. Select "MAS A/F SE-B1" and check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Ignition switch ON Approx. 0.4V

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
7. Depress the accelerator pedal and keep it. 8. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 9. Select "MAS A/F SE-B1" in "DATA MONITOR" and check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Idle (Engine is warmed-up to normal operating temperature.) 0.9 - 1.2V

10. Shift the selector lever to P position. 11. Fully depress the accelerator pedal and keep it. 12. Check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.5 - 1.8V

13. Fully release accelerator pedal then fully depress it. 14. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.
Without CONSULT-III 1. Repair or replace malfunctioning part. 2. Lift up the vehicle. 3. Turn ignition switch ON.

Revision: May 2007

EC-152

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0101 MAF SENSOR

[QR25DE]

4. Check the voltage between ECM harness connector and ground. A

ECM

Ground

Condition

Voltage

Connector

Terminal

F13

58 (MAF sensor signal)

Ground

Ignition switch ON

Approx. 0.4V

5. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.

6. Depress the accelerator pedal and keep it.

7. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

8. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

Voltage
F

F13

58 (MAF sensor signal)

Ground

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.2V

9. Shift the selector lever to P position.

10. Fully depress the accelerator pedal and keep it.

11. Check the voltage between ECM harness connector and ground.

ECM

Ground

Condition

Voltage

Connector

Terminal

F13

58 (MAF sensor signal)

Ground

2,500 rpm (Engine is warmed-up to normal operating temperature.)

1.5 - 1.8V

12. Fully release accelerator pedal then fully depress it.

13. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.

Is the inspection result normal?

YES >> INSPECTION END NO >> GO TO 4.

4.CHECK MASS AIR FLOW SENSOR-III

With CONSULT-III

1. Turn ignition switch OFF.

2. Disconnect mass air flow sensor harness connector and reconnect it again.

3. Lift up the vehicle.

4. Turn ignition switch ON.

5. Connect CONSULT-III and select "DATA MONITOR" mode.

6. Select "MAS A/F SE-B1" and check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Ignition switch ON Approx. 0.4V

7. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

8. Depress the accelerator pedal and keep it. 9. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

10. Select "MAS A/F SE-B1" in "DATA MONITOR" and check indication.

Revision: May 2007

EC-153

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0101 MAF SENSOR

[QR25DE]

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Idle (Engine is warmed-up to normal operating temperature.) 0.9 - 1.2V

11. Shift the selector lever to P position. 12. Fully depress the accelerator pedal and keep it. 13. Check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.5 - 1.8V

14. Fully release accelerator pedal then fully depress it. 15. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.
Without CONSULT-III 1. Turn ignition switch OFF. 2. Disconnect mass air flow sensor harness connector and reconnect it again. 3. Lift up the vehicle. 4. Turn ignition switch ON. 5. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

58 (MAF sensor signal)

Ground

Ignition switch ON

Approx. 0.4V

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
7. Depress the accelerator pedal and keep it. 8. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 9. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

58 (MAF sensor signal)

Ground

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.2V

10. Shift the selector lever to P position. 11. Fully depress the accelerator pedal and keep it. 12. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

F13

58 (MAF sensor signal)

Ground

2,500 rpm (Engine is warmed-up to normal operating temperature.)

13. Fully release accelerator pedal then fully depress it. 14. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.

Is the inspection result normal?
YES >> INSPECTION END NO >> Clean or replace mass air flow sensor.

Voltage 1.5 - 1.8V

Revision: May 2007

EC-154

2007 Altima Hybrid

P0102, P0103 MAF SENSOR
< COMPONENT DIAGNOSIS >
P0102, P0103 MAF SENSOR
Description
The mass air flow sensor (1) is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. The mass air flow sensor controls the temperature of the hot wire to a certain amount. The heat generated by the hot wire is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the electric current supplied to hot wire is changed to maintain the temperature of the hot wire as air flow increases. The ECM detects the air flow by means of this current change.

[QR25DE]
A
INFOID:0000000001502887
EC
C
D

DTC Logic
DTC DETECTION LOGIC

PBIA9559J

INFOID:0000000001502888

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

· Harness or connectors

P0102

Mass air flow sensor An excessively low voltage from the sensor is sent (The sensor circuit is open or shorted.)

circuit low input

to ECM.

· Intake air leaks

· Mass air flow sensor

P0103

Mass air flow sensor An excessively high voltage from the sensor is

circuit high input

sent to ECM.

· Harness or connectors (The sensor circuit is open or shorted.)
· Mass air flow sensor

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

Which DTC is detected?

P0102 >> GO TO 2.

P0103 >> GO TO 3.

2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0102

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait at least 5 seconds.

2. Check DTC.

Is DTC detected?

YES >> Go to EC-156, "Diagnosis Procedure".

NO >> INSPECTION END

3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-I

1. Turn ignition switch ON and wait at least 5 seconds.

2. Check DTC.

Is DTC detected?

YES >> Go to EC-156, "Diagnosis Procedure". NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-II

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait at least 5 seconds. 2. Check DTC.

Revision: May 2007

EC-155

2007 Altima Hybrid

P0102, P0103 MAF SENSOR
< COMPONENT DIAGNOSIS >
Is DTC detected? YES >> Go to EC-156, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.INSPECTION START
Confirm the detected DTC. Which DTC is detected?
P0102 >> GO TO 2. P0103 >> GO TO 3.
2.CHECK INTAKE SYSTEM
Check the following for connection. · Air duct · Vacuum hoses · Intake air passage between air duct to intake manifold Is the inspection result normal?
YES >> GO TO 3. NO >> Reconnect the parts.
3.CHECK GROUND CONNECTION
1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection". Is the inspection result normal?
YES >> GO TO 4. NO >> Repair or replace ground connection.
4.CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1. Disconnect mass air flow (MAF) sensor harness connector. 2. Turn ignition switch ON. 3. Check the voltage between MAF sensor harness connector and ground.

[QR25DE]
INFOID:0000000001502889

MAF sensor

Connector

Terminal

Ground

Voltage

F31

Ground

Battery voltage

Is the inspection result normal?
YES >> GO TO 6. NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART

Check the following. · Junction block connector E44 · Harness for open or short between mass air flow sensor and ECM · Harness for open or short between mass air flow sensor and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between MAF sensor harness connector and ECM harness connector.

Revision: May 2007

EC-156

2007 Altima Hybrid

P0102, P0103 MAF SENSOR
< COMPONENT DIAGNOSIS >

[QR25DE]

MAF sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F31

F13

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 7.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

7.CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between MAF sensor harness connector and ECM harness connector.

MAF sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F31

F13

Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 8.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

8.CHECK MASS AIR FLOW SENSOR

Refer to EC-157, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 9.

NO >> Replace mass air flow sensor.

9.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection
1.CHECK MASS AIR FLOW SENSOR-I
With CONSULT-III 1. Turn ignition switch OFF. 2. Reconnect all harness connectors disconnected. 3. Lift up the vehicle. 4. Turn ignition switch ON. 5. Connect CONSULT-III and select "DATA MONITOR" mode. 6. Select "MAS A/F SE-B1" and check indication.

INFOID:0000000001502890

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Ignition switch ON Approx. 0.4V

7. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

8. Depress the accelerator pedal and keep it.

9. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

10. Select "MAS A/F SE-B1" in "DATA MONITOR" and check indication.

Revision: May 2007

EC-157

2007 Altima Hybrid

P0102, P0103 MAF SENSOR
< COMPONENT DIAGNOSIS >

[QR25DE]

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Idle (Engine is warmed-up to normal operating temperature.) 0.9 - 1.2V

11. Shift the selector lever to P position. 12. Fully depress the accelerator pedal and keep it. 13. Check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.5 - 1.8V

14. Fully release accelerator pedal then fully depress it. 15. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.
Without CONSULT-III 1. Turn ignition switch OFF. 2. Reconnect all harness connectors disconnected. 3. Lift up the vehicle. 4. Turn ignition switch ON. 5. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

58 (MAF sensor signal)

Ground

Ignition switch ON

Approx. 0.4V

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
7. Depress the accelerator pedal and keep it. 8. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 9. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

58 (MAF sensor signal)

Ground

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.2V

10. Shift the selector lever to P position. 11. Fully depress the accelerator pedal and keep it. 12. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

58 (MAF sensor signal)

Ground

2,500 rpm (Engine is warmed-up to normal operating temperature.)

1.5 - 1.8V

1. Turn ignition switch OFF. 2. Check for the cause of uneven air flow through mass air flow sensor. Refer to following. - Crushed air ducts - Malfunctioning seal of air cleaner element

Revision: May 2007

EC-158

2007 Altima Hybrid

P0102, P0103 MAF SENSOR
< COMPONENT DIAGNOSIS >
- Uneven dirt of air cleaner element - Improper specification of intake air system parts
Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.CHECK MASS AIR FLOW SENSOR-II
With CONSULT-III 1. Repair or replace malfunctioning part. 2. Lift up the vehicle. 3. Turn ignition switch ON. 4. Connect CONSULT-III and select "DATA MONITOR" mode. 5. Select "MAS A/F SE-B1" and check indication.

[QR25DE]
A EC
C D

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Ignition switch ON Approx. 0.4V

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.

7. Depress the accelerator pedal and keep it.

8. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

9. Select "MAS A/F SE-B1" in "DATA MONITOR" and check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Idle (Engine is warmed-up to normal operating temperature.) 0.9 - 1.2V

10. Shift the selector lever to P position.

11. Fully depress the accelerator pedal and keep it.

12. Check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.5 - 1.8V

13. Fully release accelerator pedal then fully depress it.

14. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.

Without CONSULT-III

1. Repair or replace malfunctioning part.

2. Lift up the vehicle.

3. Turn ignition switch ON.

4. Check the voltage between ECM harness connector and ground.

ECM

Ground

Condition

Voltage

Connector

Terminal

F13

58 (MAF sensor signal)

Ground

Ignition switch ON

Approx. 0.4V

5. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

6. Depress the accelerator pedal and keep it.

7. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

8. Check the voltage between ECM harness connector and ground.

Revision: May 2007

EC-159

2007 Altima Hybrid

P0102, P0103 MAF SENSOR
< COMPONENT DIAGNOSIS >

[QR25DE]

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

58 (MAF sensor signal)

Ground

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.2V

9. Shift the selector lever to P position. 10. Fully depress the accelerator pedal and keep it. 11. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

F13

58 (MAF sensor signal)

Ground

2,500 rpm (Engine is warmed-up to normal operating temperature.)

12. Fully release accelerator pedal then fully depress it. 13. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 4.
4.CHECK MASS AIR FLOW SENSOR-III

Voltage 1.5 - 1.8V

With CONSULT-III 1. Turn ignition switch OFF. 2. Disconnect mass air flow sensor harness connector and reconnect it again. 3. Lift up the vehicle. 4. Turn ignition switch ON. 5. Connect CONSULT-III and select "DATA MONITOR" mode. 6. Select "MAS A/F SE-B1" and check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Ignition switch ON Approx. 0.4V

7. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
8. Depress the accelerator pedal and keep it. 9. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 10. Select "MAS A/F SE-B1" in "DATA MONITOR" and check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 Idle (Engine is warmed-up to normal operating temperature.) 0.9 - 1.2V

11. Shift the selector lever to P position. 12. Fully depress the accelerator pedal and keep it. 13. Check indication.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.5 - 1.8V

Revision: May 2007

EC-160

2007 Altima Hybrid

P0102, P0103 MAF SENSOR
< COMPONENT DIAGNOSIS >

[QR25DE]

5. Check the voltage between ECM harness connector and ground. A

ECM

Ground

Condition

Voltage

Connector

Terminal

F13

58 (MAF sensor signal)

Ground

Ignition switch ON

Approx. 0.4V

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.

7. Depress the accelerator pedal and keep it.

8. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

9. Check the voltage between ECM harness connector and ground.

ECM

Connector

Terminal

Ground

Condition

Voltage
F

F13

58 (MAF sensor signal)

Ground

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.2V

10. Shift the selector lever to P position.

11. Fully depress the accelerator pedal and keep it.

12. Check the voltage between ECM harness connector and ground.

ECM

Ground

Condition

Voltage

Connector

Terminal

F13

58 (MAF sensor signal)

Ground

2,500 rpm (Engine is warmed-up to normal operating temperature.)

1.5 - 1.8V

13. Fully release accelerator pedal then fully depress it.

14. Check for linear voltage rise in response to engine being increased to about 2,500 rpm.

Is the inspection result normal?

YES >> INSPECTION END NO >> Clean or replace mass air flow sensor.

Revision: May 2007

EC-161

2007 Altima Hybrid

P0112, P0113 IAT SENSOR
< COMPONENT DIAGNOSIS >
P0112, P0113 IAT SENSOR
Description
The intake air temperature sensor is built-into mass air flow sensor (1). The sensor detects intake air temperature and transmits a signal to the ECM. The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise.

[QR25DE]
INFOID:0000000001502891

PBIA9559J

Intake air temperature °C (°F)

Voltage* V

Resistance k

25 (77)

3.3

1.800 - 2.200

80 (176)

1.2

0.283 - 0.359

*: These data are reference values and are measured between ECM terminal 50 (Intake air temperature sensor) and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

DTC Logic

DTC DETECTION LOGIC

SEF012P INFOID:0000000001502892

DTC No. P0112 P0113

Trouble diagnosis name

DTC detecting condition

Intake air temperature sensor circuit low input

An excessively low voltage from the sensor is sent to ECM.

Intake air temperature sensor circuit high input

An excessively high voltage from the sensor is sent to ECM.

Possible cause
· Harness or connectors (The sensor circuit is open or shorted.)
· Intake air temperature sensor

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 5 seconds. 2. Check 1st trip DTC.
Is 1st trip DTC detected?

Revision: May 2007

EC-162

2007 Altima Hybrid

P0112, P0113 IAT SENSOR
< COMPONENT DIAGNOSIS >
YES >> Go to EC-163, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection". Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace ground connection.
2.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect mass air flow sensor (with intake air temperature sensor) harness connector. 2. Turn ignition switch ON. 3. Check the voltage between mass air flow sensor harness connector and ground.

[QR25DE]
A
INFOID:0000000001502893
EC
C
D
E

MAF sensor

Ground

Voltage

Connector

Terminal

F31

Ground

Approx. 5V

Is the inspection result normal?

YES >> GO TO 3.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between mass air flow sensor harness connector and ECM harness connector.

MAF sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F31

F13

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 4.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK INTAKE AIR TEMPERATURE SENSOR

Refer to EC-163, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 5.

NO >> Replace mass air flow sensor (with intake air temperature sensor).

5.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection
1.CHECK INTAKE AIR TEMPERATURE SENSOR
1. Turn ignition switch OFF. 2. Disconnect mass air flow sensor harness connector. 3. Check resistance between mass air flow sensor terminals as follows.

P
INFOID:0000000001502894

Revision: May 2007

EC-163

2007 Altima Hybrid

P0112, P0113 IAT SENSOR
< COMPONENT DIAGNOSIS >

Terminals

Condition

Resistance k

1 and 2 Intake air temperature °C (°F) 25 (77)

1.800 - 2.200

Is the inspection result normal?

YES >> INSPECTION END NO >> Replace mass air flow sensor (with intake air temperature sensor).

[QR25DE]

Revision: May 2007

EC-164

2007 Altima Hybrid

P0117, P0118 ECT SENSOR
< COMPONENT DIAGNOSIS >
P0117, P0118 ECT SENSOR
Description
The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

[QR25DE]
A
INFOID:0000000001502895
EC
C
D

SEF594K

Engine coolant temperature °C (°F)

Voltage* V

Resistance k

10 (14)

4.4

7.0 - 11.4

20 (68)

3.5

2.37 - 2.63

50 (122)

2.2

0.68 - 1.00

90 (194)

0.9

0.236 - 0.260

*: These data are reference values and are measured between ECM terminal 46 (Engine coolant temperature sensor) and ground. CAUTION:

SEF012P
I

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transis-

tor. Use a ground other than ECM terminals, such as the ground.
DTC Logic

J
INFOID:0000000001502896

DTC DETECTION LOGIC

DTC No.

Trouble Diagnosis Name

DTC Detecting Condition

Possible Cause
L

P0117

Engine coolant temperature sensor circuit low input

An excessively low voltage from the sensor is

sent to ECM.

· Harness or connectors

(The sensor circuit is open or shorted.)

P0118

Engine coolant temperature sensor circuit high input

An excessively high voltage from the sensor is · Engine coolant temperature sensor sent to ECM.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- O

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 5 seconds. 2. Check DTC.

Revision: May 2007

EC-165

2007 Altima Hybrid

P0117, P0118 ECT SENSOR
< COMPONENT DIAGNOSIS >
Is DTC detected? YES >> Go to EC-166, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection". Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace ground connection.
2.CHECK ECT SENSOR POWER SUPPLY CIRCUIT
1. Disconnect engine coolant temperature (ECT) sensor harness connector. 2. Turn ignition switch ON. 3. Check the voltage between ECT sensor harness connector and ground.

[QR25DE]
INFOID:0000000001502897

ECT sensor

Connector

Terminal

Ground

Voltage

F11

Ground

Approx. 5V

Is the inspection result normal?
YES >> GO TO 3. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between ECT sensor harness connector and ECM harness connector.

ECT sensor

Connector

Terminal

ECM

Connector

Terminal

Continuity

F11

F13

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to EC-166, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 5. NO >> Replace engine coolant temperature sensor.
5.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection

1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Turn ignition switch OFF. 2. Disconnect engine coolant temperature sensor harness connector. 3. Remove engine coolant temperature sensor.

Revision: May 2007

EC-166

INFOID:0000000001502898
2007 Altima Hybrid

P0117, P0118 ECT SENSOR
< COMPONENT DIAGNOSIS >
4. Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.

Terminals

Condition

Resistance

20 (68)

2.37 - 2.63 k

1 and 2

Temperature °C (°F)

50 (122)

0.68 - 1.00 k

90 (194) 0.236 - 0.260 k

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace engine coolant temperature sensor.

[QR25DE]
A EC
C
JMBIA0080ZZ
D E F G H I J K L M N O P

Revision: May 2007

EC-167

2007 Altima Hybrid

P0122, P0123 TP SENSOR
< COMPONENT DIAGNOSIS >
P0122, P0123 TP SENSOR
Description
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
DTC Logic

[QR25DE]
INFOID:0000000001502899
PBIB0145E INFOID:0000000001502900

DTC DETECTION LOGIC
NOTE: If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-314, "DTC Logic".

DTC No. P0122 P0123

Trouble diagnosis name

DTC detecting condition

Possible cause

Throttle position sensor 2 circuit low input
Throttle position sensor 2 circuit high input

An excessively low voltage from the TP sensor 2 is sent to ECM.
An excessively high voltage from the TP sensor 2 is sent to ECM.

· Harness or connectors (TP sensor 2 circuit is open or shorted.)
· Electric throttle control actuator (TP sensor 2)

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY). 2. Depress the accelerator pedal to start engine, then keep engine running for at least 1 second. 3. Check DTC.
Is DTC detected?
YES >> Go to EC-168, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502901

1.CHECK GROUND CONNECTION

Revision: May 2007

EC-168

2007 Altima Hybrid

P0122, P0123 TP SENSOR
< COMPONENT DIAGNOSIS >
2.CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT
1. Disconnect electric throttle control actuator harness connector. 2. Turn ignition switch ON. 3. Check the voltage between electric throttle control actuator harness connector and ground.

[QR25DE]
A EC

Electric throttle control actuator

Ground

Voltage

Connector

Terminal

F57

Ground

Approx. 5V

Is the inspection result normal?

YES >> GO TO 3.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

3.CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F57

F13

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 4.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between electric throttle control actuator harness connector and ECM harness con- J nector.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F57

F13

Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 5. NO >> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK THROTTLE POSITION SENSOR

Refer to EC-170, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 6.

6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator.

2. Go to EC-170, "Special Repair Requirement".

>> INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

Revision: May 2007

EC-169

2007 Altima Hybrid

< COMPONENT DIAGNOSIS > >> INSPECTION END

P0122, P0123 TP SENSOR

[QR25DE]

Component Inspection

INFOID:0000000001502902

1.CHECK THROTTLE POSITION SENSOR

1. Turn ignition switch OFF. 2. Reconnect all harness connectors disconnected. 3. Perform EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement". 4. Turn ignition switch ON. 5. Set shift lever to D position. 6. Check the voltage between ECM harness connector and ground.

Connector

ECM Terminal

Ground

Condition

Voltage

Fully released More than 0.36V

(TP sensor 1 signal)

Fully depressed Less than 4.75V

F13

Ground Accelerator pedal

Fully released Less than 4.75V

(TP sensor 2 signal)

Fully depressed More than 0.36V

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. 2. Go to EC-170, "Special Repair Requirement".

>> INSPECTION END

Special Repair Requirement

INFOID:0000000001502903

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

Revision: May 2007

EC-170

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0125 ECT SENSOR

P0125 ECT SENSOR

Description

The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

[QR25DE]
A
INFOID:0000000001502904
EC
C
D

SEF594K

Engine coolant temperature °C (°F)

Voltage* V

Resistance k

10 (14)

4.4

7.0 - 11.4

20 (68)

3.5

2.37 - 2.63

50 (122)

2.2

0.68 - 1.00

90 (194)

0.9

0.236 - 0.260

*: These data are reference values and are measured between ECM terminal 46 (Engine coolant temperature sensor) and ground. CAUTION:

SEF012P
I

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transis-

tor. Use a ground other than ECM terminals, such as the ground.
DTC Logic

J
INFOID:0000000001502905

DTC DETECTION LOGIC

NOTE:

If DTC P0125 is displayed with P0117 or P0118, first perform the trouble diagnosis for DTC P0117 or

P0118. Refer to EC-165, "DTC Logic".

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0125

Insufficient engine coolant temperature for closed loop fuel control

· Voltage sent to ECM from the sensor is not practical, even when some time has passed after starting the engine.
· Engine coolant temperature is insufficient for closed loop fuel control.

· Harness or connectors (High resistance in the circuit)
· Engine coolant temperature sensor · Thermostat

M N

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.
2.CHECK ENGINE COOLANT TEMPERATURE SENSOR FUNCTION

With CONSULT-III

Revision: May 2007

EC-171

2007 Altima Hybrid

P0125 ECT SENSOR
< COMPONENT DIAGNOSIS >
1. Turn ignition switch ON. 2. Select "DATA MONITOR" mode with CONSULT-III. 3. Check that "COOLAN TEMP/S" is above 10°C (50°F).
With GST Follow the procedure "With CONSULT-III" above.
Is it above 10°C (50°F)?
YES >> INSPECTION END NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE

[QR25DE]

With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and run engine for 65 minutes at idle speed. 2. Check 1st tip DTC. If "COOLAN TEMP/S" increases to more than 10°C (50°F) within 65 minutes, turn ignition switch OFF because the test result will be OK. CAUTION: Be careful not to overheat engine.
With GST Follow the procedure "With CONSULT-III" above.
Is 1st trip DTC detected?
YES >> EC-172, "Diagnosis Procedure" NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502906

1.CHECK GROUND CONNECTION

Refer to EC-172, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 3. NO >> Replace engine coolant temperature sensor.
3.CHECK THERMOSTAT OPERATION

When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm the engine coolant does not flow.
Is the inspection result normal?
YES >> GO TO 4. NO >> Repair or replace thermostat. Refer to CO-20, "Removal and Installation".
4.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Turn ignition switch OFF. 2. Disconnect engine coolant temperature sensor harness connector. 3. Remove engine coolant temperature sensor.

INFOID:0000000001502907

Revision: May 2007

EC-172

2007 Altima Hybrid

P0125 ECT SENSOR
< COMPONENT DIAGNOSIS >
4. Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.

Terminals

Condition

Resistance

20 (68)

2.37 - 2.63 k

1 and 2

Temperature °C (°F)

50 (122)

0.68 - 1.00 k

90 (194) 0.236 - 0.260 k

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace engine coolant temperature sensor.

Revision: May 2007

EC-173

[QR25DE]
A EC
C
JMBIA0080ZZ
D E F G H I J K L M N O P
2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0127 IAT SENSOR

P0127 IAT SENSOR

Description

The intake air temperature sensor is built-into mass air flow sensor (1). The sensor detects intake air temperature and transmits a signal to the ECM. The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise.

[QR25DE]
INFOID:0000000001502908

PBIA9559J

Intake air temperature °C (°F)

Voltage* V

Resistance k

25 (77)

3.3

1.800 - 2.200

80 (176)

1.2

0.283 - 0.359

DTC Logic

DTC DETECTION LOGIC

SEF012P INFOID:0000000001502909

DTC No. P0127

Trouble diagnosis name

DTC detecting condition

Possible cause

Intake air temperature too high

Rationally incorrect voltage from the sensor is · Harness or connectors

sent to ECM, compared with the voltage signal (The sensor circuit is open or shorted)

from engine coolant temperature sensor.

· Intake air temperature sensor

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If this test is conducted with the drive wheels lifted, activate "INPSECTION MODE 1" (HBC-103). If a road test is expected to be easier, it is unnecessary to lift up the vehicle.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III 1. Wait until engine coolant temperature is less than 90°C (194°F) - Turn ignition switch ON.

Revision: May 2007

EC-174

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0127 IAT SENSOR

[QR25DE]

- Select "DATA MONITOR" mode with CONSULT-III.

- Check the engine coolant temperature.

- If the engine coolant temperature is not less than 90°C (194°F), turn ignition switch OFF and cool down

engine.

NOTE: Perform the following steps before engine coolant temperature is above 90°C (194°F).

2. Turn ignition switch ON.

3. Select "DATA MONITOR" mode with CONSULT-III.

4. Turn ignition switch ON (READY).

5. Hold vehicle speed at more than 70 km/h (43 MPH) for 100 consecutive seconds.

CAUTION:

Always drive vehicle at a safe speed. NOTE:

Never fully release accelerator pedal during the cruising.

6. Check 1st trip DTC.

With GST

Follow the procedure "With CONSULT-III" above.

Is 1st trip DTC detected?

YES >> Go to EC-175, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure
1.CHECK GROUND CONNECTION

INFOID:0000000001502910

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK INTAKE AIR TEMPERATURE SENSOR

Refer to EC-175, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 3. NO >> Replace mass air flow sensor (with intake air temperature sensor).

3.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

Terminals

Condition

Resistance k

1 and 2 Intake air temperature °C (°F) 25 (77)

1.800 - 2.200

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace mass air flow sensor (with intake air temperature sensor).

M
INFOID:0000000001502911
N
O
P

Revision: May 2007

EC-175

2007 Altima Hybrid

P0128 THERMOSTAT FUNCTION
< COMPONENT DIAGNOSIS >
P0128 THERMOSTAT FUNCTION
DTC Logic

[QR25DE]
INFOID:0000000001502912

DTC DETECTION LOGIC
Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough. This is due to a leak in the seal or the thermostat stuck open.

DTC No. P0128

Trouble diagnosis name

DTC detecting condition

Possible cause

Thermostat function

The engine coolant temperature does not reach to specified temperature even though the engine has run long enough.

· Thermostat · Leakage from sealing portion of thermo-
stat · Engine coolant temperature sensor

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: · For best results, perform at ambient temperature of 10°C (14°F) or higher. · For best results, perform at engine coolant temperature of 10°C (14°F) to 71°C (160°F). · Before performing the following procedure, do not fill with the fuel.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III 1. Turn A/C switch OFF. 2. Turn blower fan switch OFF. 3. Turn ignition switch ON. 4. Select "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-III. 5. Check the indication of "COOLAN TEMP/S"
If it is below 71°C (160°F), go to following step. If it is above 71°C (160°F), cool down the engine to less than 71°C (160°F). Then go to next steps. 6. Activate "INSPECTION MODE 1" (HBC-103) to start engine. 7. Wait at idle for at least 30 minutes. If "COOLAN TEMP/S" increases to more than 71°C (160°F) within 30 minutes, turn ignition switch OFF because the test result will be OK. 8. Check 1st trip DTC.
With GST Follow the procedure "With CONSULT-III" above.
Is 1st trip DTC detected?
YES >> Go to EC-176, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502913

1.CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to EC-177, "Component Inspection".
Is the inspection result normal? YES >> GO TO 2. NO >> Replace engine coolant temperature sensor.

Revision: May 2007

EC-176

2007 Altima Hybrid

P0128 THERMOSTAT FUNCTION
< COMPONENT DIAGNOSIS >
2.CHECK THERMOSTAT
Check thermostat. Refer to CO-20, "Removal and Installation". Is the inspection result normal?
YES >> INSPECTION END NO >> Replace thermostat.
Component Inspection
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Turn ignition switch OFF. 2. Disconnect engine coolant temperature sensor harness connector. 3. Remove engine coolant temperature sensor. 4. Check resistance between engine coolant temperature sensor
terminals by heating with hot water as shown in the figure.

Terminals

Condition

Resistance

20 (68)

2.37 - 2.63 k

1 and 2

Temperature °C (°F)

50 (122)

0.68 - 1.00 k

90 (194) 0.236 - 0.260 k

Is the inspection result normal?

YES >> INSPECTION END NO >> Replace engine coolant temperature sensor.

[QR25DE]
A EC
INFOID:0000000001502914
C D E F G
JMBIA0080ZZ
H I J K L M N O P

Revision: May 2007

EC-177

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0130 A/F SENSOR 1

P0130 A/F SENSOR 1

Description

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range. The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocarbon density in rich. Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of about 800°C (1,472°F).

[QR25DE]
INFOID:0000000001502915
JMBIA0112GB

DTC Logic

PBIB3354E INFOID:0000000001502916

DTC DETECTION LOGIC
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal fluctuates according to fuel feedback control.

DTC No. Trouble diagnosis name

DTC detecting condition

Possible Cause

P0130

The A/F signal computed by ECM from the A/F

A) sensor 1 signal is constantly in the range other

Air fuel ratio (A/F) sensor 1

than approx. 2.2V.

circuit

The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2V.

· Harness or connectors (The A/F sensor 1 circuit is open or shorted.)
· A/F sensor 1

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Let it idle for 2 minutes.

Revision: May 2007

EC-178

2007 Altima Hybrid

P0130 A/F SENSOR 1
< COMPONENT DIAGNOSIS >
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-180, "Diagnosis Procedure". NO-1 >> With CONSULT-III: GO TO 3. NO-2 >> Without CONSULT-III: GO TO 7.
3.CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION

[QR25DE]
A EC

1. Select "A/F SEN1 (B1)" in "DATA MONITOR" mode with CONSULT-III. 2. Check "A/F SEN1 (B1)"indication.

Does the indication fluctuates around 2.2V?

YES >> GO TO 4. NO >> Go to EC-180, "Diagnosis Procedure".

4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-I

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON (READY).

3. Select "A/F SEN1 (B1) P1276" of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-III.

4. Touch "START". 5. When the following conditions are met, "TESTING" will be displayed on the CONSULT-III screen.

ENG SPEED

950 - 2,600 rpm

VHCL SPEED SE

More than 70 km/h (43 mph)

B/FUEL SCHDL

1.0 - 16.0 msec

Shift lever

D position

If "TESTING" is not displayed after 20 seconds, retry from step 2.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

Is "TESTING" displayed on CONSULT-III screen?

YES >> GO TO 5.

NO >> Check A/F sensor 1 function again. GO TO 3.

5.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-II

Release accelerator pedal fully.

NOTE:

Never apply brake during releasing the accelerator pedal.

Which does "TESTING" change to?

COMPLETED>>GO TO 6.

OUT OF CONDITION>>Retry DTC CONFIRMATION PROCEDURE. GO TO 4.

6.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-III

Touch "SELF-DIAG RESULT"

Which is displayed on CONSULT-III screen?

YES >> INSPECTION END

NO >> Go to EC-180, "Diagnosis Procedure".

7.PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B

Perform Component Function Check. Refer to EC-180, "Component Function Check".

NOTE:

Use component function check to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES >> INSPECTION END NO >> Go to EC-180, "Diagnosis Procedure".

Revision: May 2007

EC-179

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
Component Function Check

P0130 A/F SENSOR 1

[QR25DE]
INFOID:0000000001502917

1.PERFORM COMPONENT FUNCTION CHECK

With GST CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON (READY). 4. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes. 5. Set D position, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30
MPH). NOTE: Never apply brake during releasing the accelerator pedal. 6. Repeat steps 4 to 5 for five times. 7. Stop the vehicle and turn ignition switch OFF. 8. Turn ignition switch ON. 9. Turn ignition switch OFF and wait at least 10 seconds. 10. Turn ignition switch ON (READY). 11. Repeat steps 4 to 5 for five times. 12. Stop the vehicle and connect GST to the vehicle. 13. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-180, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502918

1.CHECK GROUND CONNECTION

1. Disconnect A/F sensor 1 harness connector. 2. Turn ignition switch ON. 3. Check the voltage between A/F sensor 1 harness connector and ground.

A/F sensor 1 Ground
Connector Terminal

Voltage

F44

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Check the following. · IPDM E/R harness connector F10 · 15A fuse (No. 37) · Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.
4.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

Revision: May 2007

EC-180

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0130 A/F SENSOR 1

[QR25DE]

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

A/F sensor 1

ECM

Continuity

Connector Terminal Connector Terminal

F44

F13

Existed

4. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

A/F sensor 1

ECM

Ground Continuity

Connector Terminal Connector Terminal

F44

F13

Ground Not existed

5. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK INTERMITTENT INCIDENT

Perform GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> GO TO 6.

NO >> Repair or replace.

6.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace air fuel ratio (A/F) sensor 1.

CAUTION:

· Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a

hard surface such as a concrete floor; use a new one.

· Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END L

Revision: May 2007

EC-181

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0131 A/F SENSOR 1

P0131 A/F SENSOR 1

Description

[QR25DE]
INFOID:0000000001502919
JMBIA0112GB

DTC Logic

PBIB3354E INFOID:0000000001502920

DTC DETECTION LOGIC
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately low.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible Cause

P0131

Air fuel ratio (A/F) sensor 1 circuit low voltage

· The A/F signal computed by ECM from the A/ F sensor 1 signal is constantly approx. 0V.

· Harness or connectors (The A/F sensor 1 circuit is open or shorted.)
· A/F sensor 1

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

>> GO TO 2.
2.CHECK A/F SENSOR FUNCTION
With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Select "A/F SEN1 (B1)" in "DATA MONITOR" mode with CONSULT-III. 3. Check "A/F SEN1 (B1)" indication.

Revision: May 2007

EC-182

2007 Altima Hybrid

P0131 A/F SENSOR 1
< COMPONENT DIAGNOSIS >
With GST Follow the procedure "With CONSULT-III" above.
Is the indication constantly approx. 0V? YES >> Go to EC-183, "Diagnosis Procedure". NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE

[QR25DE]
A EC

With CONSULT-III

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF, wait at least 10 seconds and then turn ignition switch ON (READY). 4. Drive and accelerate vehicle to more than 70 km/h (43 MPH) within 1 minute after turning ignition switch D

ON (READY).

CAUTION:

Always drive vehicle at a safe speed.

5. Maintain the following conditions for about 20 consecutive seconds.

ENG SPEED

1,000 - 3,200 rpm

VHCL SPEED SE

More than 70 km/h (43 mph)

B/FUEL SCHDL

1.5 - 15.0 msec

COOLAN TEMP/S

More than 70°C (158°F)

Selector lever

Suitable position

NOTE:

· Keep the accelerator pedal as steady as possible during the cruising.

· If this procedure is not completed within 150 seconds after turning ignition switch ON (READY)

at step 3, return to step 1.

6. Check 1st trip DTC.

With GST

Follow the procedure "With CONSULT-III" above.

Is 1st trip DTC detected?

YES >> Go to EC-183, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

K
INFOID:0000000001502921

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

1. Disconnect A/F sensor 1 harness connector.

2. Turn ignition switch ON.

3. Check the voltage between A/F sensor 1 harness connector and ground.

A/F sensor 1 Ground
Connector Terminal

Voltage

F44

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Revision: May 2007

EC-183

P 2007 Altima Hybrid

P0131 A/F SENSOR 1
< COMPONENT DIAGNOSIS >
Check the following. · IPDM E/R harness connector F10 · 15A fuse (No. 37) · Harness for open or short between A/F sensor 1 and fuse

[QR25DE]

>> Repair or replace harness or connectors.
4.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

A/F sensor 1

ECM

Continuity

Connector Terminal Connector Terminal

F44

F13

Existed

4. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

A/F sensor 1

ECM

Ground Continuity

Connector Terminal Connector Terminal

F44

F13

Ground Not existed

5. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK INTERMITTENT INCIDENT

Perform GI-42, "Intermittent Incident".
Is the inspection result normal?
YES >> GO TO 6. NO >> Repair or replace.
6.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

>> INSPECTION END

Revision: May 2007

EC-184

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0132 A/F SENSOR 1

P0132 A/F SENSOR 1

Description

[QR25DE]
A
INFOID:0000000001502922
EC

JMBIA0112GB

DTC Logic

PBIB3354E

INFOID:0000000001502923

DTC DETECTION LOGIC
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 J signal is not inordinately high.

DTC No. Trouble diagnosis name

DTC detecting condition

Possible Cause

· Harness or connectors

P0132

Air fuel ratio (A/F) sensor 1 · The A/F signal computed by ECM from the A/F (The A/F sensor 1 circuit is open or

circuit high voltage

sensor 1 signal is constantly approx. 5V.

shorted.)

· A/F sensor 1

DTC CONFIRMATION PROCEDURE

1.CHECK LOW FUEL WARNING LIGHT

1. Turn ignition switch ON.

2. Check the state of low fuel warning light.

Is low fuel warning light illuminated?

YES >> Refill the fuel until low fuel warning light turned OFF. Then GO TO 2.

NO >> GO TO 2.

2.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

>> GO TO 3.
Revision: May 2007

EC-185

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
3.CHECK A/F SENSOR FUNCTION

P0132 A/F SENSOR 1

[QR25DE]

With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Select "A/F SEN1 (B1)" in "DATA MONITOR" mode with CONSULT-III. 3. Check "A/F SEN1 (B1)" indication.
With GST Follow the procedure "With CONSULT-III" above.
Is the indication constantly approx. 0V?
YES >> Go to EC-186, "Diagnosis Procedure". NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF, wait at least 10 seconds and then turn ignition switch ON (READY). 4. Drive and accelerate vehicle to more than 70 km/h (43 MPH) within 1 minute after turning ignition switch
ON (READY). CAUTION: Always drive vehicle at a safe speed. 5. Maintain the following conditions for about 20 consecutive seconds.

ENG SPEED

1,000 - 3,200 rpm

VHCL SPEED SE

More than 70 km/h (43 mph)

B/FUEL SCHDL COOLAN TEMP/S

1.5 - 15.0 msec More than 70°C (158°F)

Selector lever

Suitable position

NOTE: · Keep the accelerator pedal as steady as possible during the cruising. · If this procedure is not completed within 150 seconds after turning ignition switch ON (READY)
at step 3, return to step 1. 6. Check 1st trip DTC.
With GST Follow the procedure "With CONSULT-III" above.
Is 1st trip DTC detected?
YES >> Go to EC-186, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502924

1.CHECK GROUND CONNECTION

1. Disconnect A/F sensor 1 harness connector. 2. Turn ignition switch ON. 3. Check the voltage between A/F sensor 1 harness connector and ground.

Revision: May 2007

EC-186

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0132 A/F SENSOR 1

[QR25DE]

A/F sensor 1

Ground

Voltage

Connector

Terminal

F44

Ground

Battery voltage

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

· IPDM E/R harness connector F10

· 15A fuse (No. 37)

· Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.
4.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT F 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.
G

A/F sensor 1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F44

F13

Existed

4. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

A/F sensor 1

ECM

Ground

Continuity

Connector

Terminal

Connector

Terminal

F44

F13

Ground Not existed

5. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK INTERMITTENT INCIDENT

Perform GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> GO TO 6.

NO >> Repair or replace.

6.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

O Replace air fuel ratio (A/F) sensor 1.

CAUTION:

· Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a

hard surface such as a concrete floor; use a new one.

· Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Revision: May 2007

EC-187

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0133 A/F SENSOR 1

P0133 A/F SENSOR 1

Description

[QR25DE]
INFOID:0000000001502925
JMBIA0112GB

DTC Logic

PBIB3354E INFOID:0000000001502926

DTC DETECTION LOGIC
To judge the malfunction of A/F sensor 1, this diagnosis measures response time of the A/F signal computed by ECM from the A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not.

DTC No. P0133

Trouble diagnosis name
Air fuel ratio (A/F) sensor 1 circuit slow response

DTC detecting condition
· The response of the A/F signal computed by ECM from A/F sensor 1 signal takes more than the specified time.

Possible Cause
· Harness or connectors (The A/F sensor 1 circuit is open or shorted.)
· A/F sensor 1 · A/F sensor 1 heater · Fuel pressure · Fuel injector · Intake air leaks · Exhaust gas leaks · PCV · Mass air flow sensor

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

Revision: May 2007

EC-188

2007 Altima Hybrid

P0133 A/F SENSOR 1
< COMPONENT DIAGNOSIS >
YES >> GO TO 2. NO >> GO TO 3.
2.PERFORM DTC CONFIRMATION PROCEDURE

[QR25DE]
A

With CONSULT-III 1. Turn ignition switch ON (READY).

2. Depress accelerator pedal and wait at least 6 minutes.

NOTE:

If keeping depressing the accelerator pedal for more than 6 minutes, fuel will be cut off after some time. C

3. Select "A/F SEN1(B1) P0133" of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-III.

4. Touch "START".

5. Drive vehicle at a speed of 90 km/h (56 MPH) or more until "TESTING" on CONSULT-III changes to D "COMPLETED". (It will take approximately 15 seconds.)

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

6. Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT-III?

OK >> INSPECTION END

NG >> Go to EC-189, "Diagnosis Procedure".

3.PERFORM DTC CONFIRMATION PROCEDURE

With GST

1. Turn ignition switch ON (READY).

2. Depress accelerator pedal and wait at least 6 minutes.

NOTE: If keeping depressing the accelerator pedal for more than 6 minutes, fuel will be cut off after some time.

3. Drive vehicle at a speed of 100 km/h (62 MPH) or more for at least 15 consecutive seconds.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

4. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-189, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure
1.CHECK GROUND CONNECTION

INFOID:0000000001502927
K

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.RETIGHTEN A/F SENSOR 1

Loosen and retighten the A/F sensor 1.

Tightening torque: 50 N-m (5.1 kg-m, 37 ft-lb) O

>> GO TO 3.

3.CHECK EXHAUST GAS LEAK

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and run engine at idle speed.

Revision: May 2007

EC-189

2007 Altima Hybrid

P0133 A/F SENSOR 1
< COMPONENT DIAGNOSIS > 2. Listen for an exhaust gas leak before three way catalyst (manifold).

[QR25DE]

Is exhaust gas leak detected?
YES >> Repair or replace. NO >> GO TO 4.
4.CHECK FOR INTAKE AIR LEAK

JMBIA0163GB

Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Repair or replace. NO >> GO TO 5.
5.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

Is the 1st trip DTC P0171 or P172 detected? Is it difficult to start engine?
YES >> Perform trouble diagnosis for DTC P0171 or P0172. Refer to EC-221, "DTC Logic" or EC-225, "DTC Logic".
NO >> GO TO 6.
6.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF. 2. Disconnect A/F sensor 1 harness connector. 3. Turn ignition switch ON. 4. Check the voltage between A/F sensor 1 harness connector and ground.

A/F sensor 1 Ground
Connector Terminal

Voltage

F44

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART

Check the following. · IPDM E/R harness connector F10 · 15A fuse (No. 37) · Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.
8.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

Revision: May 2007

EC-190

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0133 A/F SENSOR 1

[QR25DE]

A/F sensor 1

ECM

Continuity

Connector Terminal Connector Terminal

F44

F13

Existed

4. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

A/F sensor 1

ECM

Ground Continuity

Connector Terminal Connector Terminal

F44

F13

Ground Not existed

5. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 9.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

9.CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER

Refer to EC-137, "Component Inspection". G
Is the inspection result normal?

YES >> GO TO 10.

NO >> GO TO 13.
10.CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor.

Refer to EC-150, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 11.

NO >> Replace mass air flow sensor.

11.CHECK PCV VALVE

Refer to EC-391, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 12.

NO >> Repair or replace PCV valve.

12.CHECK INTERMITTENT INCIDENT

Perform GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> GO TO 13.

NO >> Repair or replace.

13.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace air fuel ratio (A/F) sensor 1.

CAUTION:

· Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a

hard surface such as a concrete floor; use a new one.

· Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Revision: May 2007

EC-191

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0137 HO2S2

P0137 HO2S2

Description

The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 2 is not used for engine control operation.

DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the maximum voltage of the sensor is sufficiently high during the various driving condition such as fuelcut.

[QR25DE]
INFOID:0000000001502928
SEF327R INFOID:0000000001502929

SEF259VA

DTC No. Trouble diagnosis name

DTC detecting condition

P0137

Heated oxygen sensor 2 The maximum voltage from the sensor is not

circuit low voltage

reached to the specified voltage.

Possible cause
· Harness or connectors (The sensor circuit is open or shorted)
· Heated oxygen sensor 2 · Fuel pressure · Fuel injector · Intake air leaks

DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Do you have CONSULT-III?
Do you have CONSULT-III?
YES >> GO TO 2. NO >> GO TO 5.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: For better results, perform "DTC WORK SUPPORT" at a temperature of 0 to 30 °C (32 to 86 °F).

>> GO TO 3.

Revision: May 2007

EC-192

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0137 HO2S2

[QR25DE]

3.PERFORM DTC CONFIRMATION PROCEDURE A

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature. 2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON (READY) and select "DATA MONITOR" mode with CONSULT-III.

6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

7. Stop the vehicle and shift the selector lever to P position.

8. Fully depress the accelerator pedal and keep it until step 11.

9. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F).

If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).

10. Select "HO2S2 (B1) P1147" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-III.

11. Touch "START".

NOTE:

It will take at most 10 minutes until "COMPLETED" is displayed.

12. Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT-III screen?

OK >> INSPECTION END NG >> Go to EC-194, "Diagnosis Procedure".

CAN NOT BE DIAGNOSED>>GO TO 4.

4.PERFORM DTC CONFIRMATION PROCEDURE AGAIN I

1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).

2. Perform DTC CONFIRMATION PROCEDURE again.

>> GO TO 3.

5.PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to EC-193, "Component Function Check".

NOTE:

Use component function check to check the overall function of the heated oxygen sensor 2 circuit. During this

check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES >> INSPECTION END

NO >> Go to EC-194, "Diagnosis Procedure".

Component Function Check

INFOID:0000000001502930

1.PERFORM COMPONENT FUNCTION CHECK

Without CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to the normal operating O temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition ON (READY) and drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 con-

secutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

6. Stop vehicle and shift the selector lever to P position.

Revision: May 2007

EC-193

2007 Altima Hybrid

P0137 HO2S2

< COMPONENT DIAGNOSIS >

[QR25DE]

7. Check the voltage between ECM harness connector and ground under the following condition.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

33 (HO2S2 signal)

Ground

Fully depress the accelerator pedal and keep it, then fully release accelerator pedal.

The voltage should be above 0.68V at least once during this procedure.

Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-194, "Diagnosis Procedure".

Diagnosis Procedure

INFOID:0000000001502931

1.CHECK GROUND CONNECTION

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement".
2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 10 minutes.
Is the 1st trip DTC P0171 detected? Is it difficult to start engine?
YES >> Perform trouble diagnosis for DTC P0171. Refer to EC-221, "DTC Logic". NO >> GO TO 3.
3.CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect heated oxygen sensor 2 harness connector. 3. Disconnect ECM harness connector. 4. Check the continuity between HO2S2 harness connector and ECM harness connector.

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

2. Check the continuity between HO2S2 harness connector or ECM harness connector and ground.

HO2S2

ECM

Ground Continuity

Connector Terminal Connector Terminal

F42

F13

33 Ground Not existed

3. Also check harness for short to power.

Revision: May 2007

EC-194

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0137 HO2S2

[QR25DE]

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK HEATED OXYGEN SENSOR 2 EC Refer to EC-195, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 6.

6.REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2.

CAUTION:

· Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7

in) onto a hard surface such as a concrete floor; use a new one.

· Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

F >> INSPECTION END

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection

H
INFOID:0000000001502932

1.INSPECTION START

Do you have CONSULT-III?

YES >> GO TO 2.

NO >> GO TO 3.

2.CHECK HEATED OXYGEN SENSOR 2-I

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to the normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition ON (READY) and select "DATA MONITOR" mode with CONSULT-III.

6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

7. Stop vehicle and shift the selector lever to P position. 8. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)" as the monitor item with O

CONSULT-III.

Revision: May 2007

EC-195

2007 Altima Hybrid

P0137 HO2S2
< COMPONENT DIAGNOSIS > 9. Check "HO2S2 (B1)" at idle speed when adjusting "FUEL INJECTION" to ±25%.

[QR25DE]

PBIB3458E
"HO2S2 (B1)" should be above 0.68V at least once when the "FUEL INJECTION" is +25%. "HO2S2 (B1)" should be below 0.18V at least once when the "FUEL INJECTION" is -25%.
Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 4.
3.CHECK HEATED OXYGEN SENSOR 2-II
Without CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to the normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition ON (READY) and drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 con-
secutive minutes. CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: Keep the vehicle speed as steady as possible during the cruising. 6. Stop vehicle and shift the selector lever to P position. 7. Check the voltage between ECM harness connector and ground under the following condition.

ECM

Connector

Terminal

Ground

Condition

Voltage

The voltage should be above 0.68V at

F13

33 (HO2S2 signal)

Ground

Fully depress the accelerator pedal and keep it, then fully release accelerator pedal.

least once during this procedure. The voltage should be below 0.18V at

least once during this procedure.

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 4.
4.REPLACE HEATED OXYGEN SENSOR 2

>> INSPECTION END

Revision: May 2007

EC-196

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0138 HO2S2
Description

P0138 HO2S2

[QR25DE]
A
INFOID:0000000001502933

SEF327R

INFOID:0000000001502934

DTC DETECTION LOGIC

The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/

F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching

time.

MALFUNCTION A

To judge the malfunctions of heated oxygen sensor 2, ECM monitors

whether the voltage is unusually high during the various driving condition such as fuel-cut.

MALFUNCTION B To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the minimum voltage of sensor is sufficiently low during the various driving condition such as fuel-cut.

J
PBIB1848E
K
L
M

PBIB2376E

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0138

An excessively high voltage from the sensor is sent to ECM.

· Harness or connectors (The sensor circuit is open or shorted)
· Heated oxygen sensor 2

Heated oxygen sensor 2 circuit high voltage
B)

The minimum voltage from the sensor is not reached to the specified voltage.

· Harness or connectors (The sensor circuit is open or shorted)
· Heated oxygen sensor 2 · Fuel pressure

· Fuel injector

DTC CONFIRMATION PROCEDURE

Revision: May 2007

EC-197

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
1.PRECONDITIONING

P0138 HO2S2

[QR25DE]

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY). 6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: Keep the vehicle speed as steady as possible during the cruising. 7. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-199, "Diagnosis Procedure". NO-1 >> With CONSULT-III: GO TO 3. NO-2 >> Without CONSULT-III: GO TO 5.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
NOTE: For better results, perform "DTC WORK SUPPORT" at a temperature of 0 to 30 °C (32 to 86 °F). 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY) and select "DATA MONITOR" mode with CONSULT-III. 6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: Keep the vehicle speed as steady as possible during the cruising. 7. Stop the vehicle and shift the selector lever to P position. 8. Fully depress the accelerator pedal and keep it until step 11. 9. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F). If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F). 10. Select "HO2S2 (B1) P1146" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-II. 11. Touch "START". NOTE: It will take at most 10 minutes until "COMPLETED" is displayed. 12. Touch "SELF-DIAG RESULT".
Which is displayed on CONSULT-III
OK >> INSPECTION END NG >> Go to EC-199, "Diagnosis Procedure". CAN NOT BE DIAGNOSED>>GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALUNCTION B AGAIN
1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle). 2. Perform DTC CONFIRMATION PROCEDURE again.

Revision: May 2007

EC-198

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0138 HO2S2

[QR25DE]

>> GO TO 3.

5.PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B

Perform component function check. Refer to EC-199, "Diagnosis Procedure".

NOTE:

Use component function check to check the overall function of the heated oxygen sensor 2 circuit. During this

check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES >> INSPECTION END NO >> Go to EC-199, "Diagnosis Procedure".
Component Function Check

D
INFOID:0000000001502935

1.PERFORM COMPONENT FUNCTION CHECK

Without CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to the normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition ON (READY) and drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 con-

secutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

6. Stop vehicle and shift the selector lever to P position. 7. Check the voltage between ECM harness connector and ground under the following condition.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

33 (HO2S2 signal)

Ground

Fully depress the accelerator pedal and keep it, then fully release accelerator pedal

The voltage should be below 0.18V at least once during this procedure.

Is the inspection result normal?

YES >> INSPECTION END

NO >> Go to EC-199, "Diagnosis Procedure".

Diagnosis Procedure

INFOID:0000000001502936

1.INSPECTION START

Confirm the detected malfunction (A or B). Refer to EC-197, "DTC Logic".

Which malfunction is detected?

>> GO TO 2.

>> GO TO 9.

2.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 3. NO >> Repair or replace ground connection.
3.CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Disconnect heated oxygen sensor 2 harness connector. 2. Disconnect ECM harness connector. 3. Check the continuity between HO2S2 harness connector and ECM harness connector.

Revision: May 2007

EC-199

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0138 HO2S2

[QR25DE]

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

2. Check the continuity between HO2S2 harness connector or ECM harness connector and ground.

HO2S2

ECM

Ground Continuity

Connector Terminal Connector Terminal

F42

F13

33 Ground Not existed

3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK HO2S2 CONNECTOR FOR WATER

Check connectors for water.

Water should not exist.
Is the inspection result normal?
YES >> GO TO 6. NO >> Repair or replace harness or connectors.
6.CHECK HEATED OXYGEN SENSOR 2
Refer to EC-202, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 7.
7.REPLACE HEATED OXYGEN SENSOR 2
Replace heated oxygen sensor 2. CAUTION: · Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one. · Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END
8.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Revision: May 2007

EC-200

2007 Altima Hybrid

P0138 HO2S2
< COMPONENT DIAGNOSIS >
9.CHECK GROUND CONNECTION
1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection". Is the inspection result normal?
YES >> GO TO 10. NO >> Repair or replace ground connection.
10.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

[QR25DE]
A EC
C

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE

CLEAR : Special Repair Requirement".

2. Activate "INSPECTION MODE 1" (HBC-103) to start for at least 10 minutes.

Is the 1st trip DTC P0172 detected? Is it difficult to start engine?

YES >> Perform trouble diagnosis for DTC P0172. Refer to EC-225, "DTC Logic".

NO >> GO TO 11.

11.CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect heated oxygen sensor 2 harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between HO2S2 harness connector and ECM harness connector.

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 12.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

12.CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

2. Check the continuity between HO2S2 harness connector or ECM harness connector and ground.

HO2S2

ECM

Ground Continuity

Connector Terminal Connector Terminal

F42

F13

33 Ground Not existed

3. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 13.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

13.CHECK HEATED OXYGEN SENSOR 2 P

Refer to EC-202, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 15. NO >> GO TO 14.
14.REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2.

Revision: May 2007

EC-201

2007 Altima Hybrid

P0138 HO2S2

< COMPONENT DIAGNOSIS >

[QR25DE]

CAUTION: · Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one. · Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END
15.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Component Inspection

INFOID:0000000001502937

1.INSPECTION START

Do you have CONSULT-III?
Do you have CONSULT-III?
YES >> GO TO 2. NO >> GO TO 3.
2.CHECK HEATED OXYGEN SENSOR 2-I

With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to the normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition ON (READY) and select "DATA MONITOR" mode with CONSULT-III. 6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: Keep the vehicle speed as steady as possible during the cruising. 7. Stop vehicle and shift the selector lever to P position. 8. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)" as the monitor item with CONSULT-III. 9. Check "HO2S2 (B1)" at idle speed when adjusting "FUEL INJECTION" to ±25%.

Revision: May 2007

EC-202

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0138 HO2S2

[QR25DE]

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition ON (READY) and drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 con-

secutive minutes. CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

6. Stop vehicle and shift the selector lever to P position.

7. Check the voltage between ECM harness connector and ground under the following condition.

ECM

Connector

Terminal

Ground

Condition

Voltage

The voltage should be above 0.68V at

F13

33 (HO2S2 signal)

Ground

Fully depress the accelerator pedal and keep it, then fully release accelerator pedal.

least once during this procedure. The voltage should be below 0.18V at

least once during this procedure.

Is the inspection result normal?

YES >> INSPECTION END

NO >> GO TO 4.

4.REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2.

CAUTION:

· Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7

in) onto a hard surface such as a concrete floor; use a new one.

· Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread I

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Revision: May 2007

EC-203

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0139 HO2S2

P0139 HO2S2

Description

DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the switching response of the sensor's voltage is faster than specified during the various driving condition such as fuel-cut.

[QR25DE]
INFOID:0000000001502938
SEF327R INFOID:0000000001502939

SEF302U

DTC No. P0139

Trouble diagnosis name

DTC detecting condition

Possible cause

Heated oxygen sensor 2 circuit slow response

It takes more time for the sensor to respond between rich and lean than the specified time.

· Harness or connectors (The sensor circuit is open or shorted)
· Heated oxygen sensor 2 · Fuel pressure · Fuel injector · Intake air leaks

>> GO TO 3.

Revision: May 2007

EC-204

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0139 HO2S2

[QR25DE]

3.PERFORM DTC CONFIRMATION PROCEDURE A

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature. 2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON (READY) and select "DATA MONITOR" mode with CONSULT-III.

6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

7. Stop the vehicle and shift the selector lever to P position.

8. Fully depress the accelerator pedal and keep it until step 11.

9. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F).

If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).

10. Select "HO2S2 (B1) P0139" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-III.

11. Touch "START".

NOTE:

It will take at most 10 minutes until "COMPLETED" is displayed.

12. Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT-III?

OK >> INSPECTION END NG >> GO TO 4.

CAN NOT BE DIAGNOSED>>GO TO 4.

4.PERFORM THE RESULT OF DTC CONFIRMATION PROCEDURE I

1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).

2. Perform DTC CONFIRMATION PROCEDURE again.

>> GO TO 3.

5.PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to EC-205, "Component Function Check".

NOTE:

Use component function check to check the overall function of the heated oxygen sensor 2 circuit. During this

check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES >> INSPECTION END

NO >> Go to EC-206, "Diagnosis Procedure".

Component Function Check

INFOID:0000000001502940

1.PERFORM COMPONENT FUNCTION CHECK

Without CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to the normal operating O temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition ON (READY) and drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 con-

secutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

6. Stop vehicle and shift the selector lever to P position.

Revision: May 2007

EC-205

2007 Altima Hybrid

P0139 HO2S2

< COMPONENT DIAGNOSIS >

[QR25DE]

7. Check the voltage between ECM harness connector and ground under the following condition.

ECM

Connector

Terminal

Ground

Condition

Voltage

F13

33 (HO2S2 signal)

Ground

Fully depress the accelerator pedal and keep it, then fully release accelerator pedal

A change of voltage should be more than 0.30V for during this procedure.

Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-206, "Diagnosis Procedure".

Diagnosis Procedure

INFOID:0000000001502941

1.CHECK GROUND CONNECTION

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement".
2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 10 minutes.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?
YES >> Perform trouble diagnosis for DTC P0171 or P0172. Refer to EC-221, "DTC Logic" or EC-225, "DTC Logic".
NO >> GO TO 3.
3.CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

HO2S2

ECM

Continuity

Connector Terminal Connector Terminal

F42

F13

Existed

2. Check the continuity between HO2S2 harness connector or ECM harness connector and ground.

HO2S2

ECM

Ground Continuity

Connector Terminal Connector Terminal

F42

F13

33 Ground Not existed

Revision: May 2007

EC-206

2007 Altima Hybrid

P0139 HO2S2
< COMPONENT DIAGNOSIS >
3. Also check harness for short to power. Is the inspection result normal?
YES >> GO TO 5. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK HEATED OXYGEN SENSOR 2

[QR25DE]
A EC

Refer to EC-207, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 6.

6.REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2.

CAUTION:

· Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 E

in) onto a hard surface such as a concrete floor; use a new one.

· Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection
1.INSPECTION START

H
INFOID:0000000001502942
I

Do you have CONSULT-III?

YES >> GO TO 2.

NO >> GO TO 3.

2.CHECK HEATED OXYGEN SENSOR 2-I

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to the normal operating L

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition ON (READY) and select "DATA MONITOR" mode with CONSULT-III.

6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

7. Stop vehicle and shift the selector lever to P position.

8. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)" as the monitor item with

CONSULT-III.

Revision: May 2007

EC-207

2007 Altima Hybrid

P0139 HO2S2
< COMPONENT DIAGNOSIS > 9. Check "HO2S2 (B1)" at idle speed when adjusting "FUEL INJECTION" to ±25%.

[QR25DE]

ECM

Connector

Terminal

Ground

Condition

Voltage

The voltage should be above 0.68V at

F13

33 (HO2S2 signal)

Ground

Fully depress the accelerator pedal and keep it, then fully release accelerator pedal.

least once during this procedure. The voltage should be below 0.18V at

least once during this procedure.

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 4.
4.REPLACE HEATED OXYGEN SENSOR 2

>> INSPECTION END

Revision: May 2007

EC-208

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0143 HO2S3

P0143 HO2S3

Description

The heated oxygen sensor 3, after HC adsorption catalyst (Under floor), monitors the oxygen level in the exhaust gas. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 3 is not used for engine control operation.

[QR25DE]
A
INFOID:0000000001502943
EC
C
D

DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 3 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 3, ECM monitors whether the minimum voltage of sensor is sufficiently low during the various driving condition such as fuel cut.

SEF327R

INFOID:0000000001502944

PBIB2376E

DTC No. Trouble diagnosis name

DTC detecting condition

P0143

Heated oxygen sensor 3 The minimum voltage from the sensor is not

circuit high voltage

reached to the specified voltage.

Possible cause

· Harness or connectors

(The sensor circuit is open or shorted)

· Heated oxygen sensor 3

· Fuel pressure

· Fuel injector

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON (READY).

6. Repeat following procedure 3 times.

- Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

Revision: May 2007

EC-209

2007 Altima Hybrid

P0143 HO2S3
< COMPONENT DIAGNOSIS >
NOTE: · Keep the vehicle speed as steady as possible during the cruising. · Never raise engine speed above 3,600 rpm in this step. - Release accelerator pedal fully and stop vehicle. NOTE: Never turn ignition switch OFF. 7. Check 1st trip DTC.
Is 1st tip DTC detected?
YES >> Go to EC-210, "Diagnosis Procedure". NO >> INSPECTION END

[QR25DE]

Diagnosis Procedure

INFOID:0000000001502945

1.CHECK GROUND CONNECTION

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement".
2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 10 minutes.
Is the 1st trip DTC P0172 detected? Is it difficult to start engine?
YES >> Perform trouble diagnosis for DTC P0172. Refer to EC-226, "Diagnosis Procedure". NO >> GO TO 3.
3.CHECK HO2S3 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect heated oxygen sensor 3 harness connector. 3. Disconnect ECM harness connector. 4. Check the continuity between HO2S3 harness connector and ECM harness connector.

HO2S3

ECM

Continuity

Connector Terminal Connector Terminal

F102

F13

Existed

5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> GO TO 4.
4.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors F58, F101 · Harness for open or short between heated oxygen sensor 3 and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK HO2S3 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between HO2S3 harness connector and ECM harness connector.

HO2S3

ECM

Connector Terminal Connector Terminal

F102

F13

Continuity Existed

Revision: May 2007

EC-210

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0143 HO2S3

[QR25DE]

2. Check the continuity between HO2S3 harness connector or ECM harness connector and ground. A

HO2S3

ECM

Ground Continuity

Connector Terminal Connector Terminal

F102

F13

Ground

Not existed

3. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 6.

6.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors F58, F101

· Harness for open or short between heated oxygen sensor 3 and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> GO TO 8.

NO >> Repir or replace.

8.REPLACE HEATED OXYGEN SENSOR 3

Replace heated oxygen sensor 3.

CAUTION: · Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 I

in) onto a hard surface such as a concrete floor; use a new one.

· Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END K

Revision: May 2007

EC-211

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0144 HO2S3

P0144 HO2S3

Description

[QR25DE]
INFOID:0000000001502946

DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 3 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 3, ECM monitors whether the maximum voltage of the sensor is sufficiently high during the various driving condition such as fuelcut.

SEF327R INFOID:0000000001502947

SEF259VA

DTC No. Trouble diagnosis name

DTC detecting condition

P0144

Heated oxygen sensor 3 The maximum voltage from the sensor is not

circuit low voltage

reached to the specified voltage.

Possible cause
· Harness or connectors (The sensor circuit is open or shorted)
· Heated oxygen sensor 3 · Fuel pressure · Fuel injector · Intake air leaks

Revision: May 2007

EC-212

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0144 HO2S3

[QR25DE]

- Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

· Keep the vehicle speed as steady as possible during the cruising. · Never raise engine speed above 3,600 rpm in this step.

- Release accelerator pedal fully and stop vehicle.

NOTE:

Never turn ignition switch OFF.

7. Check 1st trip DTC.

Is 1st tip DTC detected?

YES >> Go to EC-213, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure
1.CHECK GROUND CONNECTION

INFOID:0000000001502948
E

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2. NO >> Repair or replace ground connection.

2.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE H CLEAR : Special Repair Requirement".
2. Activate "INSPECTION MODE 1"(HBC-103) to start engine, and let engine idle for at least 10 minutes.

Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?

YES >> Perform trouble diagnosis for DTC P0171 or P0172. Refer to EC-221, "DTC Logic" or EC-225,

"DTC Logic".

NO >> GO TO 3.

3.CHECK HO2S3 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect heated oxygen sensor 3 harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between HO2S3 harness connector and ECM harness connector.

HO2S3

ECM

Continuity

Connector Terminal Connector Terminal

F102

F13

Existed

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 5.

NO >> GO TO 4.

4.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors F58, F101

· Harness for open or short between heated oxygen sensor 3 and ECM

Revision: May 2007

EC-213

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0144 HO2S3

[QR25DE]

HO2S3

ECM

Connector Terminal Connector Terminal

Continuity

F102

F13

Existed

2. Check the continuity between HO2S3 harness connector or ECM harness connector and ground.

HO2S3

ECM

Connector Terminal Connector Terminal

Ground

Continuity

F102

F13

Ground

Not existed

3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 6.
6.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors F58, F101 · Harness for open or short between heated oxygen sensor 3 and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
Is the inspection result normal?
YES >> GO TO 8. NO >> Repir or replace.
8.REPLACE HEATED OXYGEN SENSOR 3
Replace heated oxygen sensor 3. CAUTION: · Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one. · Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Revision: May 2007

EC-214

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0145 HO2S3

P0145 HO2S3

Description

[QR25DE]
A
INFOID:0000000001502949
EC
C
D

DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 3 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 3, ECM monitors whether the switching response of the sensor's voltage is faster than specified during the various driving condition such as fuel-cut.

SEF327R

INFOID:0000000001502950

SEF302U

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Harness or connectors

(The sensor circuit is open or shorted)

P0145

Heated oxygen sensor 3 It takes more time for the sensor to respond be- · Heated oxygen sensor 3 circuit slow response tween rich and lean than the specified time. · Fuel pressure

· Fuel injector

· Intake air leaks

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds. O

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY). 6. Repeat following procedure 3 times.

Revision: May 2007

EC-215

2007 Altima Hybrid

P0145 HO2S3

< COMPONENT DIAGNOSIS >

[QR25DE]

- Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes. CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: · Keep the vehicle speed as steady as possible during the cruising. · Never raise engine speed above 3,600 rpm in this step.
- Release accelerator pedal fully and stop vehicle. NOTE: Never turn ignition switch OFF.
7. Check 1st trip DTC.

Is 1st tip DTC detected?

YES >> Go to EC-216, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502951

1.CHECK GROUND CONNECTION

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement".
2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let idle for at least 10 minutes.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?
YES >> Perform trouble diagnosis for DTC P0171 or P0172. Refer to EC-221, "DTC Logic" or EC-225, "DTC Logic".
NO >> GO TO 3.
3.CHECK HO2S3 GROUND CIRCUIT FOR OPEN AND SHORT

HO2S3

ECM

Connector Terminal Connector Terminal

Continuity

F102

F13

Existed

5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> GO TO 4.
4.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors F58, F101 · Harness for open or short between heated oxygen sensor 3 and ECM

Revision: May 2007

EC-216

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0145 HO2S3

[QR25DE]

HO2S3

ECM

Continuity

Connector Terminal Connector Terminal

F102

F13

Existed

2. Check the continuity between HO2S3 harness connector or ECM harness connector and ground.

HO2S3

ECM

Ground

Continuity

Connector Terminal Connector Terminal

F102

F13

Ground

Not existed

3. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 6.

6.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors F58, F101

· Harness for open or short between heated oxygen sensor 3 and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK INTERMITTENT INCIDENT H Refer to GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> GO TO 8.

NO >> Repair or replace.

8.REPLACE HEATED OXYGEN SENSOR

Replace heated oxygen sensor 3.

CAUTION:

· Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7

in) onto a hard surface such as a concrete floor; use a new one.

· Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

L >> INSPECTION END

Revision: May 2007

EC-217

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0146 HO2S3

P0146 HO2S3

Description

DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 3 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 3, ECM monitors whether the voltage is unusually high during the various driving condition such as fuel-cut.

[QR25DE]
INFOID:0000000001502952
SEF327R INFOID:0000000001502953

PBIB1848E

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0146

Heated oxygen sensor 3 circuit no activity detected

An excessively high voltage from the sensor is sent to ECM.

· Harness or connectors (The sensor circuit is open or shorted)
· Heated oxygen sensor 3

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY). 6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: Keep the vehicle speed as steady as possible during the cruising. 7. Check 1st trip DTC.

Revision: May 2007

EC-218

2007 Altima Hybrid

P0146 HO2S3
< COMPONENT DIAGNOSIS >
Is 1st trip DTC detected? YES >> Go to EC-219, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection". Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace ground connection.
2.CHECK HO2S3 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect heated oxygen sensor 3 harness connector. 3. Disconnect ECM harness connector. 4. Check the continuity between HO2S3 harness connector and ECM harness connector.

[QR25DE]
A EC INFOID:0000000001502954
C D E F

HO2S3

ECM

Connector Terminal Connector Terminal

Continuity

F102

F13

Existed

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors F58, F101

· Harness for open or short between heated oxygen sensor 3 and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK HO2S3 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between HO2S3 harness connector and ECM harness connector.

HO2S3

ECM

Continuity

Connector Terminal Connector Terminal

F102

F13

Existed

2. Check the continuity between HO2S3 harness connector or ECM harness connector and ground. N

HO2S3

Connector Terminal

F102

ECM

Connector Terminal

F13

Ground Ground

Continuity Not existed

3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 6. NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors F58, F101 · Harness for open or short between heated oxygen sensor 3 and ECM

Revision: May 2007

EC-219

O P
2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P0146 HO2S3

[QR25DE]

>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK HO2S3 CONNECTOR FOR WATER
Check connectors for water.
Water should not exist.
Is the inspection result normal? YES >> GO TO 7. NO >> Repair or replace harness or connectors.
7.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident". Is the inspection result normal?
YES >> GO TO 8. NO >> Repair or replace.
8.REPLACE HEATED OXYGEN SENSOR
Replace heated oxygen sensor 3. CAUTION: · Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one. · Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Revision: May 2007

EC-220

2007 Altima Hybrid

P0171 FUEL INJECTION SYSTEM FUNCTION
< COMPONENT DIAGNOSIS >
P0171 FUEL INJECTION SYSTEM FUNCTION
DTC Logic

[QR25DE]
A
INFOID:0000000001502955

DTC DETECTION LOGIC

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the

theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calcu-

lates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the

ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic).

Sensor A/F sensor 1

Input signal to ECM

ECM function

Actuator

Density of oxygen in exhaust gas (Mixture ratio feedback signal)

Fuel injection control

Fuel injector

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Intake air leaks

· A/F sensor 1

P0171

Fuel injection system too lean

· Fuel injection system does not operate properly. · The amount of mixture ratio compensation is too
large. (The mixture ratio is too lean.)

· Fuel injector · Exhaust gas leaks · Incorrect fuel pressure · Lack of fuel

· Mass air flow sensor

DTC CONFIRMATION PROCEDURE

· Incorrect PCV hose connection
H

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- I

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE-II

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE L CLEAR : Special Repair Requirement".

2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 10 minutes.

3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-222, "Diagnosis Procedure".

NO >> GO TO 3.

3.PERFORM DTC CONFIRMATION PROCEDURE-III

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON (READY) and drive the vehicle under the similar conditions to (1st trip) Freeze O

Frame Data for 10 minutes. Refer to the table below.

Hold the accelerator pedal as steady as possible.

The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following con-

ditions should be satisfied at the same time.

Engine speed Vehicle speed

Engine speed in the freeze frame data ± 400 rpm Vehicle speed in the freeze frame data ± 10 km/h (6 MPH)

Revision: May 2007

EC-221

2007 Altima Hybrid

P0171 FUEL INJECTION SYSTEM FUNCTION
< COMPONENT DIAGNOSIS >

[QR25DE]

Engine coolant temperature (T) condition

When the freeze frame data shows lower than 70 °C (158 °F), T should be lower than 70 °C (158 °F).
When the freeze frame data shows higher than or equal to 70 °C (158 °F), T should be higher than or equal to 70 °C (158 °F).

3. Check 1st trip DTC.

Is 1st trip DTC detected?
YES >> Go to EC-222, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502956

1.CHECK EXHAUST GAS LEAK

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine. 2. Listen for an exhaust gas leak before three way catalyst (manifold).

Is exhaust gas leak detected?
YES >> Repair or replace. NO >> GO TO 2.
2.CHECK FOR INTAKE AIR LEAK

JMBIA0163GB

1. Listen for an intake air leak after the mass air flow sensor. 2. Check PCV hose connection.
Intake air leak detected?
YES >> Repair or replace. NO >> GO TO 3.
3.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF. 2. Disconnect corresponding A/F sensor 1 harness connector. 3. Disconnect ECM harness connector. 4. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

A/F sensor 1

ECM

Continuity

Connector Terminal Connector Terminal

F44

F14

Existed

5. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

A/F sensor 1

ECM

Ground Continuity

Connector Terminal Connector Terminal

F44

F14

Ground Not existed

6. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 4.

Revision: May 2007

EC-222

2007 Altima Hybrid

P0171 FUEL INJECTION SYSTEM FUNCTION
< COMPONENT DIAGNOSIS >
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUEL PRESSURE

[QR25DE]
A

1. Release fuel pressure to zero. Refer to EC-450, "Inspection".

2. Install fuel pressure gauge and check fuel pressure. Refer to EC-450, "Inspection".

At idling: Approximately 350 kPa (3.57 kg/cm2, 51 psi)

Is the inspection result normal?

YES >> GO TO 6.

NO >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check fuel hoses and fuel tubes for clogging.

Is the inspection result normal?

YES >> Replace "fuel filter and fuel pump assembly".

NO >> Repair or replace

6.CHECK MASS AIR FLOW SENSOR

With CONSULT-III

1. Install all removed parts.

2. Check "MASS AIR FLOW" in "DATA MONITOR" mode with CONSULT-III.

3. For specification, refer to EC-455, "Mass Air Flow Sensor".

With GST

1. Install all removed parts.

2. Check mass air flow sensor signal in Service $01 with GST.

3. For specification, refer to EC-455, "Mass Air Flow Sensor".

Is the measurement value within the specification?

YES >> GO TO 7.

NO >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or

grounds. Refer to EC-147, "DTC Logic".

7.CHECK FUNCTION OF FUEL INJECTOR

With CONSULT-III

1. Turn ignition switch ON (READY).

2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III.

3. Make sure that each circuit produces a momentary engine speed drop.

Without CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine.

2. Listen to each fuel injector operating sound.

Clicking noise should be heard.

Is the inspection result normal?

YES >> GO TO 8.

NO >> Perform trouble diagnosis for FUEL INJECTOR, refer to

EC-235, "Diagnosis Procedure".

8.CHECK FUEL INJECTOR

PBIB3332E

1. Turn ignition switch OFF. 2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle. 3. Disconnect all fuel injector harness connectors. 4. Remove fuel tube assembly. Refer to EM-34, "Removal and Installation".
Keep fuel hose and all fuel injectors connected to fuel tube. 5. Disconnect all ignition coil harness connectors.

Revision: May 2007

EC-223

2007 Altima Hybrid

P0171 FUEL INJECTION SYSTEM FUNCTION
< COMPONENT DIAGNOSIS > 6. Prepare pans or saucers under each fuel injector. 7. Turn ignition switch ON (READY). 8. Depress the accelerator pedal to crank engine.
NOTE: If step 8 performed, a certain DTC may be detected.
Fuel should be sprayed evenly for each fuel injector. Is the inspection result normal?
YES >> GO TO 9. NO >> Replace fuel injectors from which fuel does not spray
out. Always replace O-ring with new ones.
9.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END

[QR25DE]
PBIA9666J

Revision: May 2007

EC-224

2007 Altima Hybrid

P0172 FUEL INJECTION SYSTEM FUNCTION
< COMPONENT DIAGNOSIS >
P0172 FUEL INJECTION SYSTEM FUNCTION
DTC Logic

[QR25DE]
A
INFOID:0000000001502957

DTC DETECTION LOGIC

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the

theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calcu-

lates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (The actual mixture ratio is too rich.), the

ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic).

Sensor

Input signal to ECM

ECM function

Actuator

A/F sensor 1

Density of oxygen in exhaust gas (Mixture ratio feedback signal)

Fuel injection control

Fuel injector

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· A/F sensor 1

P0172

Fuel injection system too rich

· Fuel injection system does not operate properly. · Fuel injector

· The amount of mixture ratio compensation is too · Exhaust gas leaks

large. (The mixture ratio is too rich.)

· Incorrect fuel pressure

· Mass air flow sensor

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

J >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-II

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE K

CLEAR : Special Repair Requirement".

2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 10 minutes.

3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-226, "Diagnosis Procedure".

NO >> GO TO 3.

3.PERFORM DTC CONFIRMATION PROCEDURE-III

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON (READY) and drive the vehicle under the similar conditions to (1st trip) Freeze

Frame Data for 10 minutes. Refer to the table below.

Hold the accelerator pedal as steady as possible.

The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following con- O

ditions should be satisfied at the same time.

Engine speed Vehicle speed

Engine speed in the freeze frame data ± 400 rpm

Vehicle speed in the freeze frame data ± 10 km/h (6 MPH)

Engine coolant temperature (T) condition

3. Check 1st trip DTC.

Revision: May 2007

EC-225

2007 Altima Hybrid

P0172 FUEL INJECTION SYSTEM FUNCTION
< COMPONENT DIAGNOSIS > Is 1st trip DTC detected?
YES >> Go to EC-226, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK EXHAUST GAS LEAK
1. Activate "INSPECTION MODE 1" (HBC-103) to start engine. 2. Listen for an exhaust gas leak before three way catalyst (manifold).

[QR25DE]
INFOID:0000000001502958

Is exhaust gas leak detected?
YES >> Repair or replace. NO >> GO TO 2.
2.CHECK FOR INTAKE AIR LEAK

JMBIA0163GB

Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Repair or replace. NO >> GO TO 3.
3.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT

A/F sensor 1

ECM

Continuity

Connector Terminal Connector Terminal

F44

F14

Existed

5. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

A/F sensor 1

ECM

Ground Continuity

Connector Terminal Connector Terminal

F44

F14

Ground Not existed

6. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 4. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUEL PRESSURE

1. Release fuel pressure to zero. Refer to EC-450, "Inspection". 2. Install fuel pressure gauge and check fuel pressure. Refer to EC-450, "Inspection".

Revision: May 2007

EC-226

2007 Altima Hybrid

P0172 FUEL INJECTION SYSTEM FUNCTION
< COMPONENT DIAGNOSIS >

[QR25DE]

At idling: Approximately 350 kPa (3.57 kg/cm2, 51 psi)

Is the inspection result normal?

YES >> GO TO 6. NO >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check fuel hoses and fuel tubes for clogging.

Is the inspection result normal?

YES >> Replace "fuel filter and fuel pump assembly".

NO >> Repair or replace

6.CHECK MASS AIR FLOW SENSOR

With CONSULT-III

1. Install all removed parts.

2. Check "MASS AIR FLOW" in "DATA MONITOR" mode with CONSULT-III.

3. For specification, refer to EC-455, "Mass Air Flow Sensor".

With GST

1. Install all removed parts.

2. Check mass air flow sensor signal in "Service $01" with GST.

3. For specification, refer to EC-455, "Mass Air Flow Sensor".

Is the measurement value within the specification?

YES >> GO TO 7.

NO >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or H

grounds. Refer to EC-147, "DTC Logic".

7.CHECK FUNCTION OF FUEL INJECTOR

I With CONSULT-III

1. Turn ignition ON (READY).

2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III.

3. Make sure that each circuit produces a momentary engine speed drop.

Without CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine.

2. Listen to each fuel injector operating sound.

Clicking noise should be heard.

Is the inspection result normal?

YES >> GO TO 8.

NO >> Perform trouble diagnosis for FUEL INJECTOR, refer to

EC-235, "Diagnosis Procedure".

8.CHECK FUELINJECTOR
1. Remove fuel injector assembly. Refer to EM-34, "Removal and Installation". Keep fuel hose and all fuel injectors connected to fuel tube.
2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle. 3. Disconnect all fuel injector harness connectors. 4. Disconnect all ignition coil harness connectors. 5. Prepare pans or saucers under each fuel injectors. 6. Turn ignition switch ON (READY). 7. Depress the accelerator pedal to crank engine.
Make sure fuel does not drip from fuel injector. NOTE: If step 7 performed, a certain DTC may be detected.

PBIB3332E
O
P

Revision: May 2007

EC-227

2007 Altima Hybrid

P0172 FUEL INJECTION SYSTEM FUNCTION

< COMPONENT DIAGNOSIS >

[QR25DE]

Is the inspection result normal?

YES >> GO TO 9. NO >> Replace the fuel injectors from which fuel is dripping. Always replace O-ring with new one.
9.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Revision: May 2007

EC-228

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0181 FTT SENSOR
Description

P0181 FTT SENSOR

[QR25DE]
A
INFOID:0000000001502959

The fuel tank temperature sensor is used to detect the fuel tempera-

ture inside the fuel tank. The sensor modifies a voltage signal from

the ECM. The modified signal returns to the ECM as the fuel temper-

ature input. The sensor uses a thermistor which is sensitive to the

change in temperature. The electrical resistance of the thermistor

decreases as temperature increases.

Fluid temperature °C (°F)
20 (68)

Voltage* V
3.5

Resistance k
2.3 - 2.7

SEF012P

50 (122)

2.2

0.79 - 0.90

*: These data are reference values and are measured between ECM terminal 95 (Fuel tank temperature sensor) and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transis-

tor. Use a ground other than ECM terminals, such as the ground.

DTC Logic

G
INFOID:0000000001502960

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0181

Fuel tank temperature sensor circuit range/performance

Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from engine coolant temperature sensor and intake air temperature sensor.

· Harness or connectors (The sensor circuit is open or shorted)
· Fuel tank temperature sensor

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING K

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Turn ignition switch ON and wait at least 10 seconds. 2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-230, "Diagnosis Procedure". NO >> GO TO 3.
3.CHECK ENGINE COOLANT TEMPERATURE

With CONSULT-III 1. Select "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-III. 2. Check "COOLAN TEMP/S" value.
With GST Follow the procedure "With CONSULT-III" above.
"COOLAN TEMP/S" less than 60°C (140°F)?
YES >> INSPECTION END

Revision: May 2007

EC-229

M N O P
2007 Altima Hybrid

P0181 FTT SENSOR
< COMPONENT DIAGNOSIS >
NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE-II

[QR25DE]

With CONSULT-III 1. Cool engine down until "COOLAN TEMP/S" is less than 60°C (140°F). 2. Wait at least 10 seconds. 3. Check 1st trip DTC.
With GST Follow the procedure "With CONSULT-III" above.
Is 1st trip DTC detected?
YES >> Go to EC-230, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502961

1.CHECK GROUND CONNECTION

1. Disconnect "fuel level sensor unit and fuel pump" harness connector. 2. Turn ignition switch ON. 3. Check the voltage between "fuel level sensor unit and fuel pump" harness connector and ground.

Fuel level sensor unit and fuel pump

Ground

Connector

Terminal

Voltage

B42

Ground Approx. 5V

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors E29, B10 · Harness for open or short between ECM and "fuel level sensor unit and fuel pump"

>> Repair open circuit or short to ground or short to power in harness or connector.
4.CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Check the continuity between "fuel level sensor unit and fuel pump" harness connector and ECM harness
connector.

Fuel level sensor unit and fuel pump

ECM

Continuity

Connector

Terminal Connector Terminal

B42

E10

104

Existed

3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 6. NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART

Revision: May 2007

EC-230

2007 Altima Hybrid

P0181 FTT SENSOR
< COMPONENT DIAGNOSIS > Check the following. · Harness connectors B1, M6 · Harness connectors E30, M1 · Harness for open or short between "fuel level sensor unit and fuel pump" and ECM
>> Repair open circuit or short to ground or short to power in harness or connector.
6.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to EC-231, "Component Inspection". Is the inspection result normal?
YES >> GO TO 7. NO >> Replace "fuel level sensor unit and fuel pump".
7.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

[QR25DE]
A EC
C D E

>> INSPECTION END
Component Inspection
1.CHECK FUEL TANK TEMPERATURE SENSOR
1. Turn ignition switch OFF. 2. Disconnect "fuel level sensor unit and fuel pump" harness connector. 3. Remove fuel level sensor unit. 4. Check resistance between "fuel level sensor unit and fuel pump"
terminals by heating with hot water as shown in the figure.

Terminals

Condition

Resistance

4 and 5 Temperature °C (°F)

20 (68) 50 (122)

2.3 - 2.7 k 0.79 - 0.90 k

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace "fuel level sensor unit and fuel pump".

F
INFOID:0000000001502962
G
H
I
J
K
JMBIA0167ZZ

Revision: May 2007

EC-231

2007 Altima Hybrid

P0182, P0183 FTT SENSOR
< COMPONENT DIAGNOSIS >
P0182, P0183 FTT SENSOR
Description
The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases. <Reference data>

[QR25DE]
INFOID:0000000001502963

Fluid temperature °C (°F)

Voltage* V

Resistance k

20 (68)

3.5

2.3 - 2.7

SEF012P

50 (122)

2.2

0.79 - 0.90

*: These data are reference values and are measured between ECM terminal 95 (Fuel tank temperature sensor) and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

DTC Logic

INFOID:0000000001502964

DTC DETECTION LOGIC

DTC No. P0182 P0183

Trouble diagnosis name
Fuel tank temperature sensor circuit low input
Fuel tank temperature sensor circuit high input

DTC detecting condition
An excessively low voltage from the sensor is sent to ECM.
An excessively high voltage from the sensor is sent to ECM.

Possible cause
· Harness or connectors (The sensor circuit is open or shorted.)
· Fuel tank temperature sensor

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 5 seconds. 2. Check 1st trip DTC. Is 1st trip DTC detected?
YES >> Go to EC-232, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection". Is the inspection result normal?
YES >> GO TO 2.

INFOID:0000000001502965

Revision: May 2007

EC-232

2007 Altima Hybrid

P0182, P0183 FTT SENSOR
< COMPONENT DIAGNOSIS >
NO >> Repair or replace ground connection.
2.CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

[QR25DE]
A

1. Disconnect "fuel level sensor unit and fuel pump" harness connector.

2. Turn ignition switch ON. 3. Check the voltage between "fuel level sensor unit and fuel pump" harness connector and ground.

Fuel level sensor unit and fuel pump Ground Voltage

Connector

Terminal

B42

Ground Approx. 5V

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors E29, B10 · Harness for open or short between ECM and "fuel level sensor unit and fuel pump"

>> Repair open circuit or short to ground or short to power in harness or connector.
4.CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Check the continuity between "fuel level sensor unit and fuel pump" harness connector and ECM harness H
connector.

Fuel level sensor unit and fuel pump

ECM

Continuity

Connector

Terminal

Connector Terminal

B42

E10

104

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 6.

NO >> GO TO 5.

5.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors B1, M6

· Harness connectors E30, M1

· Harness for open or short between "fuel level sensor unit and fuel pump" and ECM

>> Repair open circuit or short to ground or short to power in harness or connector.

6.CHECK FUEL TANK TEMPERATURE SENSOR

Refer to EC-234, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 7.

NO >> Replace "fuel level sensor unit and fuel pump".

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Revision: May 2007

EC-233

2007 Altima Hybrid

P0182, P0183 FTT SENSOR
< COMPONENT DIAGNOSIS >
Component Inspection
1.CHECK FUEL TANK TEMPERATURE SENSOR
1. Turn ignition switch OFF. 2. Disconnect "fuel level sensor unit and fuel pump" harness connector. 3. Remove fuel level sensor unit. 4. Check resistance between "fuel level sensor unit and fuel pump"
terminals by heating with hot water as shown in the figure.

Terminals

Condition

Resistance

4 and 5 Temperature °C (°F)

20 (68) 50 (122)

2.3 - 2.7 k 0.79 - 0.90 k

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace "fuel level sensor unit and fuel pump".

[QR25DE]
INFOID:0000000001502966
JMBIA0167ZZ

Revision: May 2007

EC-234

2007 Altima Hybrid

P0201, P0202, P0203, P0204 FUEL INJECTOR
< COMPONENT DIAGNOSIS >
P0201, P0202, P0203, P0204 FUEL INJECTOR
Description
The fuel injector is a small, precise solenoid valve. When the ECM supplies a ground to the fuel injector circuit, the coil in the fuel injector is energized. The energized coil pulls the ball valve back and allows fuel to flow through the fuel injector into the intake manifold. The amount of fuel injected depends upon the injection pulse duration. Pulse duration is the length of time the fuel injector remains open. The ECM controls the injection pulse duration based on engine fuel needs.

[QR25DE]
A
INFOID:0000000001502967
EC
C
D

DTC Logic
DTC DETECTION LOGIC

PBIA9664J

INFOID:0000000001502968

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause
G

P0201

No. 1 cylinder fuel injector circuit open

An excessively low voltage signal is sent to ECM through the No. 1 fuel injector

· Harness or connectors (No. 1 fuel injector circuit is open or shorted.)
· No. 1 fuel injector

P0202

No. 2 cylinder fuel injector circuit open

An excessively low voltage signal is sent to ECM through the No. 2 fuel injector

· Harness or connectors (No. 2 fuel injector circuit is open or shorted.)
· No. 2 fuel injector

P0203

No. 3 cylinder fuel injector circuit open

An excessively low voltage signal is sent to ECM through the No. 3 fuel injector

· Harness or connectors (No. 3 fuel injector circuit is open or shorted.)
· No. 3 fuel injector

P0204

No. 4 cylinder fuel injector circuit open

An excessively low voltage signal is sent to ECM through the No. 4 fuel injector

· Harness or connectors (No. 4 fuel injector circuit is open or shorted.)
· No. 4 fuel injector

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- L ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (READY) and wait at least 1 second. 2. Check DTC. Is DTC detected?
YES >> Go to EC-235, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF. 2. Disconnect fuel injector harness connector. 3. Turn ignition switch ON.

Revision: May 2007

EC-235

N O P
INFOID:0000000001502969
2007 Altima Hybrid

P0201, P0202, P0203, P0204 FUEL INJECTOR
< COMPONENT DIAGNOSIS > 4. Check the voltage between fuel injector harness connector and ground.

[QR25DE]

DTC

Fuel injector Ground
Cylinder Connector Terminal

Voltage

P0201

F17

P0202

F18

Ground Battery voltage

P0203

F19

P0204

F20

Is the inspection result normal?
YES >> GO TO 3. NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART

Check the following. · IPDM E/R harness connector F10 · 10A fuse (No. 35) · Harness for open or short between fuel injector and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between fuel injector harness connector and ECM harness connector.

DTC

Fuel injector

ECM

Continuity

Cylinder Connector Terminal Connector Terminal

P0201

F17

P0202

F18

F14

Existed

P0203

F19

P0204

F20

Refer to EC-236, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 5. NO >> Replace malfunctioning fuel injector.
5.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident". Is the inspection result normal?
YES >> Replace IPDM E/R. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
Component Inspection

1.CHECK FUEL INJECTOR

1. Turn ignition switch OFF. 2. Disconnect fuel injector harness connector.

INFOID:0000000001502970

Revision: May 2007

EC-236

2007 Altima Hybrid

P0201, P0202, P0203, P0204 FUEL INJECTOR
< COMPONENT DIAGNOSIS > 3. Check resistance between fuel injector terminals as follows.

Terminals

Resistance

1 and 2 11.1 - 14.3 [at 10 -60°C (50 - 140°F)]

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace malfunctioning fuel injector.

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-237

2007 Altima Hybrid

P0222, P0223 TP SENSOR
< COMPONENT DIAGNOSIS >
P0222, P0223 TP SENSOR
Description
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001502971
PBIB0145E INFOID:0000000001502972

DTC No. P0222 P0223

Trouble diagnosis name
Throttle position sensor 1 circuit low input
Throttle position sensor 1 circuit high input

DTC detecting condition
An excessively low voltage from the TP sensor 1 is sent to ECM.
An excessively high voltage from the TP sensor 1 is sent to ECM.

Possible cause
· Harness or connectors (TP sensor 1 circuit is open or shorted.)
· Electric throttle control actuator (TP sensor 1)

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY). 2. Depress the accelerator pedal to start engine, then keep engine running for at least 1 second. 3. Check DTC.
Is DTC detected?
YES >> Go to EC-238, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502973

1.CHECK GROUND CONNECTION

1. Disconnect electric throttle control actuator harness connector.

Revision: May 2007

EC-238

2007 Altima Hybrid

P0222, P0223 TP SENSOR
< COMPONENT DIAGNOSIS >

[QR25DE]

2. Turn ignition switch ON.

3. Check the voltage between electric throttle control actuator harness connector and ground.

Electric throttle control actuator

Connector

Ground Voltage Terminal

F57

Ground Approx. 5V

Is the inspection result normal?

YES >> GO TO 3.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

3.CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between electric throttle control actuator harness connector and ECM harness con- E
nector.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal Connector Terminal

F57

F13

Existed

G 4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 4.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between electric throttle control actuator harness connector and ECM harness con- I nector.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal Connector Terminal

F57

F13

Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK THROTTLE POSITION SENSOR

Refer to EC-240, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 7. NO >> GO TO 6.

6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator.

2. Go to EC-240, "Special Repair Requirement".

>> INSPECTION END

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Revision: May 2007

EC-239

2007 Altima Hybrid

P0222, P0223 TP SENSOR
< COMPONENT DIAGNOSIS >
Component Inspection

[QR25DE]
INFOID:0000000001502974

1.CHECK THROTTLE POSITION SENSOR

Connector

ECM Terminal

Ground

Condition

Voltage

Fully released More than 0.36V

(TP sensor 1 signal)

Fully depressed Less than 4.75V

F13

Ground Accelerator pedal

Fully released Less than 4.75V

(TP sensor 2 signal)

Fully depressed More than 0.36V

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. 2. Go to EC-360, "Special Repair Requirement".

>> INSPECTION END

Special Repair Requirement

INFOID:0000000001502975

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

Revision: May 2007

EC-240

2007 Altima Hybrid

P0300, P0301, P0302, P0303, P0304 MISFIRE
< COMPONENT DIAGNOSIS >
P0300, P0301, P0302, P0303, P0304 MISFIRE
DTC Logic

[QR25DE]
A
INFOID:0000000001502976

DTC DETECTION LOGIC

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crank-

shaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring.

Sensor

Input signal to ECM

C
ECM function

Crankshaft position sensor (POS)

Engine speed

On board diagnosis of misfire

The misfire detection logic consists of the following two conditions.

1. One Trip Detection Logic (Three Way Catalyst Damage)

On the 1st trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to over-

heating, the MIL will blink.

When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions

for a change.

When the misfire condition decreases to a level that will not damage the TWC, the MIL will turn off. If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink.

When the misfire condition decreases to a level that will not damage the TWC, the MIL will remain on.

If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.

2. Two Trip Detection Logic (Exhaust quality deterioration)

For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only

light when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sen-

sor signal every 1,000 engine revolutions.

A misfire malfunction can be detected on any one cylinder or on multiple cylinders.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0300

Multiple cylinder misfire detected

Multiple cylinder misfire. · Improper spark plug

P0301

No.1 cylinder misfire detected

No. 1 cylinder misfires.

· Insufficient compression · Incorrect fuel pressure

P0302

No. 2 cylinder misfire detected

No. 2 cylinder misfires.

· The fuel injector circuit is open or shorted

P0303

No. 3 cylinder misfire detected

No. 3 cylinder misfires.

· Fuel injector · Intake air leak

· The ignition signal circuit is open or shorted

· Lack of fuel

P0304

No. 4 cylinder misfire detected

No. 4 cylinder misfires.

· Signal plate

· A/F sensor 1

· Incorrect PCV hose connection

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

O >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating P temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Activate "INSPECTION MODE 1" (HBC-103) to start engine, then keep engine running for at least 15 min-
utes. 6. Check 1st trip DTC.

Revision: May 2007

EC-241

2007 Altima Hybrid

P0300, P0301, P0302, P0303, P0304 MISFIRE
< COMPONENT DIAGNOSIS >
Is 1st trip DTC detected?
YES >> Go to EC-242, "Diagnosis Procedure". NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II

[QR25DE]

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. 4. Turn ignition switch ON (READY) and drive the vehicle under the similar conditions to (1st trip) Freeze
Frame Data for a certain time. Refer to the table below. Hold the accelerator pedal as steady as possible. The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following conditions should be satisfied at the same time. CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driving.

Engine speed

Engine speed in the freeze frame data ± 400 rpm

Vehicle speed

Vehicle speed in the freeze frame data ± 10 km/h (6 MPH)

Engine coolant temperature (T) condition

The time to driving varies according to the engine speed in the freeze frame data.

Engine speed

Time

Around 1,000 rpm

Approximately 10 minutes

Around 2,000 rpm

Approximately 5 minutes

More than 3,000 rpm

Approximately 3.5 minutes

5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-242, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502977

1.CHECK FOR INTAKE AIR LEAK AND PCV HOSE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and run it at idle speed. 2. Listen for the sound of the intake air leak. 3. Check PCV hose connection.
Is intake air leak detected?
YES >> Discover air leak location and repair. NO >> GO TO 2.
2.CHECK FOR EXHAUST SYSTEM CLOGGING

Turn ignition switch OFF and visually check exhaust tube, three way catalyst and muffler for dents.
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 3. YES-2 >> Without CONSULT-III: GO TO 4. NO >> Repair or replace it.
3.PERFORM POWER BALANCE TEST

With CONSULT-III 1. Turn ignition switch ON (READY). 2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III.

Revision: May 2007

EC-242

2007 Altima Hybrid

P0300, P0301, P0302, P0303, P0304 MISFIRE
< COMPONENT DIAGNOSIS > 3. Make sure that each circuit produces a momentary engine speed drop. Is the inspection result normal?
YES >> GO TO 9. NO >> GO TO 4.
4.CHECK FUNCTION OF FUEL INJECTOR
1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle. 2. Listen to each fuel injector operating sound.
Clicking noise should be heard.
Is the inspection result normal? YES >> GO TO 5. NO >> Perform trouble diagnosis for FUEL INJECTOR, refer to EC-235, "Diagnosis Procedure".

[QR25DE]
A EC
C D E

5.CHECK FUNCTION OF IGNITION COIL-I

PBIB3332E

CAUTION:

Do the following procedure in the place where ventilation is good without the combustible.

1. Turn ignition switch OFF.

2. Remove fuel pump fuse in IPDM E/R to release fuel pressure.

NOTE:

Do not use CONSULT-III to release fuel pressure, or fuel pressure applies again during the following pro-

cedure.

3. Turn ignition switch ON (READY).

4. Depress accelerator pedal and keep it.

5. After engine stalls, check DTC.

If DTC is detected, erase DTC and go to next steps.

If DTC is not detected, go to next steps.

6. Turn ignition switch OFF.

7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.

8. Remove ignition coil and spark plug of the cylinder to be checked.

9. Repeat steps 3 to 5 for two or three times to remove combustion gas in the cylinder.

10. Connect spark plug and harness connector to ignition coil.

11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -

0.66 in) between the edge of the spark plug and grounded metal

portion as shown in the figure.

12. Turn ignition switch ON (READY).

13. Depress accelerator pedal for about 3 seconds, and check

whether spark is generated between the spark plug and the

grounded metal portion.

Spark should be generated.

CAUTION:

· Do not approach to the spark plug and the ignition coil

JMBIA0066GB

within 50 cm (19.7 in). Be careful not to get an electrical

shock while checking, because the electrical discharge voltage becomes 20kV or more.

· It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken.

NOTE:

When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal-

functioning.

Is the inspection result normal?

YES >> GO TO 9. NO >> GO TO 6.
6.CHECK FUNCTION OF IGNITION COIL-II

Revision: May 2007

EC-243

2007 Altima Hybrid

P0300, P0301, P0302, P0303, P0304 MISFIRE

< COMPONENT DIAGNOSIS >

[QR25DE]

1. Turn ignition switch OFF. 2. Disconnect spark plug and connect a known-good spark plug. 3. Turn ignition switch ON (READY). 4. Depress accelerator pedal for about 3 seconds, and recheck whether spark is generated between the
spark plug and the grounded metal portion.

Spark should be generated.

Is the inspection result normal?
YES >> GO TO 7. NO >> Check ignition coil, power transistor and their circuits. Refer to EC-380, "Component Function
Check".
7.CHECK SPARK PLUG

Check the initial spark plug for fouling, etc.

Is the inspection result normal?

YES NO

>> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-19, "SPARK PLUG (PLATINUM-TIPPED TYPE) : Removal and Installation".
>> Repair or clean spark plug. Then GO TO 8.

SEF156I
8.CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs. 2. Turn ignition switch ON (READY). 3. Depress accelerator pedal for about 3 seconds, and recheck whether spark is generated between the
spark plug and the grounded portion.

Spark should be generated.
Is the inspection result normal?
YES >> INSPECTION END NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-19, "SPARK
PLUG (PLATINUM-TIPPED TYPE) : Removal and Installation".
9.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-21, "Compression pressure".
Is the inspection result normal?
YES >> GO TO 10. NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
10.CHECK FUEL PRESSURE
1. Install all removed parts. 2. Release fuel pressure to zero. Refer to EC-450, "Inspection". 3. Install fuel pressure gauge and check fuel pressure. Refer to EC-450, "Inspection".

At idling: Approximately 350 kPa (3.57 kg/cm2, 51 psi)
Is the inspection result normal? YES >> GO TO 12. NO >> GO TO 11.
11.DETECT MALFUNCTIONING PART

Check fuel hoses and fuel tubes for clogging. Is the inspection result normal?
YES >> Replace "fuel filter and fuel pump assembly".

Revision: May 2007

EC-244

2007 Altima Hybrid

P0300, P0301, P0302, P0303, P0304 MISFIRE
< COMPONENT DIAGNOSIS >
NO >> Repair or replace.
12.CHECK IDLE SPEED AND IGNITION TIMING

[QR25DE]
A

1. Check idle speed.

- For procedure, refer to EC-14, "IDLE SPEED : Special Repair Requirement". - For specification, refer to EC-455, "Idle Speed".

2. Check ignition timing.

- For procedure, refer to EC-14, "IGNITION TIMING : Special Repair Requirement".

- For specification, refer to EC-455, "Ignition Timing".

Is the inspection result normal?

YES >> GO TO 13.

NO >> Follow the EC-11, "BASIC INSPECTION : Special Repair Requirement".

13.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect corresponding A/F sensor 1 harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

A/F sensor 1

ECM

Continuity

Connector Terminal Connector Terminal

F44

F13

Existed

5. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

A/F sensor 1

ECM

Ground Continuity

Connector Terminal Connector Terminal

F44

F13

Ground Not existed

6. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 14.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

14.CHECK A/F SENSOR 1 HEATER L

Refer to EC-137, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 15.

NO >> Replace A/F sensor 1.

15.CHECK MASS AIR FLOW SENSOR

With CONSULT-III

Check "MASS AIR FLOW" in "DATA MONITOR" mode with CONSULT-III.

For specification, refer to EC-455, "Mass Air Flow Sensor".

With GST

Check mass air flow sensor signal in Service $01 with GST.

For specification, refer to EC-455, "Mass Air Flow Sensor".

Is the measurement value within the specification?

YES >> GO TO 16. NO >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or
ground. Refer to EC-147, "DTC Logic".
16.CHECK SYMPTOM TABLE

Check items on the rough idle symptom in EC-439, "Symptom Table". Is the inspection result normal?

Revision: May 2007

EC-245

2007 Altima Hybrid

P0300, P0301, P0302, P0303, P0304 MISFIRE
< COMPONENT DIAGNOSIS >
YES >> GO TO 17. NO >> Repair or replace.
17.ERASE THE 1ST TRIP DTC

[QR25DE]

Some tests may cause a 1st trip DTC to be set. Erase the 1st trip DTC from the ECM memory after performing the tests. Refer to EC-86, "Diagnosis Description".

>> GO TO 18.
18.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Revision: May 2007

EC-246

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0327, P0328 KS
Description

P0327, P0328 KS

[QR25DE]
A
INFOID:0000000001502978

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A EC knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.

DTC Logic

INFOID:0000000001502979

DTC DETECTION LOGIC

DTC No.

Trouble diagnosis name

DTC detected condition

D
Possible cause

P0327

Knock sensor circuit An excessively low voltage from the sensor is

low input

sent to ECM.

· Harness or connectors

(The sensor circuit is open or shorted.)

P0328

Knock sensor circuit An excessively high voltage from the sensor is · Knock sensor

high input

sent to ECM.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY).

2. Depress the accelerator pedal to start engine, then keep engine running for at least 5 second.

3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-247, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure
1.CHECK GROUND CONNECTION

INFOID:0000000001502980
M

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK KNOCK SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Disconnect knock sensor harness connector and disconnect ECM harness connector.

2. Check the continuity between knock sensor harness connector and ECM harness connector.

Knock sensor

ECM

Continuity

Connector Terminal Connector Terminal

F45

F13

Existed

3. Also check harness for short to ground and short to power.

Revision: May 2007

EC-247

2007 Altima Hybrid

P0327, P0328 KS
< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> GO TO 3. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

[QR25DE]

1. Check the continuity between knock sensor harness connector and ECM harness connector.

Knock sensor

ECM

Continuity

Connector Terminal Connector Terminal

F45

F13

Existed

2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK KNOCK SENSOR

Refer to EC-248, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 5. NO >> Replace knock sensor.
5.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection
1.CHECK KNOCK SENSOR
1. Turn ignition switch OFF. 2. Disconnect knock sensor harness connector. 3. Check resistance between knock sensor terminals as follows.
NOTE: It is necessary to use an ohmmeter which can measure more than 10 M.

INFOID:0000000001502981

Terminals

Resistance

1 and 2

Approx. 532 - 588 k [at 20°C (68°F)]

CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use only new ones.

Is the inspection result normal?

YES >> INSPECTION END NO >> Replace knock sensor.

Revision: May 2007

EC-248

2007 Altima Hybrid

P0335 CKP SENSOR (POS)
< COMPONENT DIAGNOSIS >
P0335 CKP SENSOR (POS)
Description
The crankshaft position sensor (POS) is located on the oil pan facing the gear teeth (cogs) of the signal plate. It detects the fluctuation of the engine revolution. The sensor consists of a permanent magnet and Hall IC. When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. Due to the changing magnetic field, the voltage from the sensor changes. The ECM receives the voltage signal and detects the fluctuation of the engine revolution. ECM receives the signals as shown in the figure.

[QR25DE]
A
INFOID:0000000001502982
EC

JMBIA0062ZZ

DTC Logic

H
JMBIA0104GB

INFOID:0000000001502983

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name

DTC detecting condition

J
Possible cause

P0335

· Harness or connectors

· The crankshaft position sensor (POS) signal [Crankshaft position sensor (POS) circuit K

is not detected by the ECM during the first

is open or shorted.]

few seconds of engine cranking.

(Refrigerant pressure sensor circuit is

Crankshaft position sensor (POS) circuit

· The proper pulse signal from the crankshaft position sensor (POS) is not sent to ECM while the engine is running.

shorted.) (EVAP control system pressure sensor circuit is shorted.)

· The crankshaft position sensor (POS) signal · Crankshaft position sensor (POS)

is not in the normal pattern during engine run- · Refrigerant pressure sensor

ning.

· EVAP control system pressure sensor

· Signal plate

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10.5V with igni-

tion switch ON.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

Revision: May 2007

EC-249

2007 Altima Hybrid

P0335 CKP SENSOR (POS)

< COMPONENT DIAGNOSIS >

[QR25DE]

1. Turn ignition switch ON (READY). 2. Depress the accelerator pedal to start engine, then keep engine running for at least 5 seconds. 3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-250, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502984

1.CHECK GROUND CONNECTION

1. Disconnect crankshaft position (CKP) sensor (POS) harness connector. 2. Turn ignition switch ON. 3. Check the voltage between CKP sensor (POS) harness connector and ground.

CKP sensor (POS) Ground
Connector Terminal

Voltage

F30

Ground Approx. 5V

Is the inspection result normal?
YES >> GO TO 6. NO >> GO TO 3.
3.CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-II

1. Turn ignition switch ON. 2. Disconnect ECM harness connector. 3. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

CKP sensor (POS)

ECM

Continuity

Connector Terminal Connector Terminal

F30

F13

Existed

Is the inspection result normal?
YES >> GO TO 4. NO >> Repair open circuit.
4.CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-III

Check harness for short to power and short to ground, between the following terminals.

ECM

Sensor

Connector Terminal

Name

Connector Terminal

72 Refrigerant pressure sensor F13
76 CKP sensor (POS)

E219

F30

E10

91 EVAP control system pressure sensor B41

Is the inspection result normal?
YES >> GO TO 5. NO >> Repair short to ground or short to power in harness or connectors.
5.CHECK COMPONENTS

Check the following.

Revision: May 2007

EC-250

2007 Altima Hybrid

P0335 CKP SENSOR (POS)
< COMPONENT DIAGNOSIS >
· Refrigerant pressure sensor · EVAP control system pressure sensor (Refer to EC-284, "Component Inspection".)
Is the inspection result normal?
YES >> GO TO 10. NO >> Replace malfunctioning components.
6.CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT

[QR25DE]
A EC

1. Turn ignition switch OFF. 2. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

CKP sensor (POS)

ECM

Continuity

Connector Terminal Connector Terminal

F30

F13

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 7.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

7.CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.

2. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

CKP sensor (POS)

ECM

Continuity

Connector Terminal Connector Terminal

F30

F13

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 8. NO >> Repair open circuit or short to ground or short to power in harness or connectors.

8.CHECK CRANKSHAFT POSITION SENSOR (POS)

Refer to EC-251, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 9.

NO >> Replace crankshaft position sensor (POS).

9.CHECK GEAR TOOTH

Visually check for chipping signal plate gear tooth.

Is the inspection result normal?

YES >> GO TO 10.

NO >> Replace the signal plate.

10.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident". O

>> INSPECTION END
Component Inspection
1.CHECK CRANKSHAFT POSITION SENSOR (POS)-I
1. Turn ignition switch OFF. 2. Loosen the fixing bolt of the sensor. 3. Disconnect crankshaft position sensor (POS) harness connector. 4. Remove the sensor.

INFOID:0000000001502985

Revision: May 2007

EC-251

2007 Altima Hybrid

P0335 CKP SENSOR (POS)
< COMPONENT DIAGNOSIS > 5. Visually check the sensor for chipping. Is the inspection result normal?
YES >> GO TO 2. NO >> Replace crankshaft position sensor (POS).

2.CHECK CRANKSHAFT POSITION SENSOR (POS)-II
Check resistance between crankshaft position sensor (POS) terminals as follows.

Terminals (Polarity)

Resistance [at 25°C (77°F)]

1 (+) - 2 (-)

1 (+) - 3 (-)

Except 0 or

2 (+) - 3 (-)

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace crankshaft position sensor (POS).

[QR25DE]
JMBIA0063ZZ

Revision: May 2007

EC-252

2007 Altima Hybrid

P0340 CMP SENSOR (PHASE)
< COMPONENT DIAGNOSIS >
P0340 CMP SENSOR (PHASE)
Description
The camshaft position sensor (PHASE) senses the retraction of camshaft (INT) to identify a particular cylinder. The camshaft position sensor (PHASE) senses the piston position. When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor (PHASE) provides various controls of engine parts instead, utilizing timing of cylinder identification signals. The sensor consists of a permanent magnet and Hall IC. When engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. Due to the changing magnetic field, the voltage from the sensor changes. ECM receives the signals as shown in the figure.

[QR25DE]
A
INFOID:0000000001502986
EC

JMBIA0064ZZ

DTC Logic

JMBIA0104GB
I
INFOID:0000000001502987

DTC DETECTION LOGIC

NOTE:

If DTC P0340 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-314, "DTC Logic".

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0340

Camshaft position sensor (PHASE) circuit

· The cylinder No. signal is not sent to ECM for the first few seconds during engine cranking.
· The cylinder No. signal is not sent to ECM during engine running.
· The cylinder No. signal is not in the normal pattern during engine running.

· Harness or connectors (The sensor circuit is open or shorted)
· Camshaft position sensor (PHASE) · Camshaft (INT) · Dead (Weak) battery

L M

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test. 1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10.5V with igni-

tion switch ON.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I

1. Turn ignition switch ON (READY).

Revision: May 2007

EC-253

2007 Altima Hybrid

P0340 CMP SENSOR (PHASE)

< COMPONENT DIAGNOSIS >

[QR25DE]

2. Depress the accelerator pedal to start engine, then keep engine running for at least 5 seconds. 3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-254, "Diagnosis Procedure". NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-IL

1. Maintaining engine speed at more than 800 rpm for at least 5 seconds. 2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-254, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502988

1.CHECK STARTING SYSTEM

1. Turn ignition switch ON (READY). 2. Depress accelerator pedal and keep it.
Does the engine turn over? Does the starter motor operate?
YES >> GO TO 2. NO >> Check starting system.
2.CHECK GROUND CONNECTION

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 3. NO >> Repair or replace ground connection.
3.CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT

1. Disconnect camshaft position (CMP) sensor (PHASE) harness connector. 2. Turn ignition switch ON. 3. Check the voltage between CMP sensor (PHASE) harness connector and ground.

CMP sensor (PHASE) Ground
Connector Terminal

Voltage

F55

Ground Approx. 5V

Is the inspection result normal?
YES >> GO TO 4. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK CMP SENSOR (PHASE) GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Check the continuity between CMP sensor (PHASE) harness connector and ECM harness connector.

CMP sensor (PHASE)

ECM

Continuity

Connector Terminal Connector Terminal

F55

F13

Existed

1. Disconnect ECM harness connector.

Revision: May 2007

EC-254

2007 Altima Hybrid

P0340 CMP SENSOR (PHASE)
< COMPONENT DIAGNOSIS >

[QR25DE]

2. Check the continuity between CMP sensor (PHASE) harness connector and ECM harness connector. A

CMP sensor (PHASE)

ECM

Continuity

Connector Terminal Connector Terminal

F55

F13

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 6.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

6.CHECK CAMSHAFT POSITION SENSOR (PHASE)

Refer to EC-255, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 7.

NO >> Replace camshaft position sensor (PHASE).

7.CHECK CAMSHAFT (INT)

Check the following.

· Accumulation of debris to the signal plate of camshaft (1) rear end

· Chipping signal plate of camshaft rear end

Is the inspection result normal?

YES >> GO TO 8.

NO >> Remove debris and clean the signal plate of camshaft

rear end or replace camshaft.

8.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK CAMSHAFT POSITION SENSOR (PHASE)-I
1. Turn ignition switch OFF. 2. Loosen the fixing bolt of the sensor. 3. Disconnect camshaft position sensor (PHASE) harness connector. 4. Remove the sensor. 5. Visually check the sensor for chipping. Is the inspection result normal?
YES >> GO TO 2. NO >> Replace camshaft position sensor (PHASE).

JMBIA0096ZZ
J
K
INFOID:0000000001502989
L
M
N
O

2.CHECK CAMSHAFT POSITION SENSOR (PHASE)-II
Check resistance camshaft position sensor (PHASE) terminals as follows.

Revision: May 2007

EC-255

JMBIA0065ZZ
2007 Altima Hybrid

P0340 CMP SENSOR (PHASE)
< COMPONENT DIAGNOSIS >

Terminals (Polarity)

Resistance

1 (+) - 2 (-)

1 (+) - 3 (-)

Except 0 or [at 25°C (77°F)]

2 (+) - 3 (-)

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace camshaft position sensor (PHASE).

[QR25DE]

Revision: May 2007

EC-256

2007 Altima Hybrid

P0420 THREE WAY CATALYST FUNCTION
< COMPONENT DIAGNOSIS >
P0420 THREE WAY CATALYST FUNCTION
DTC Logic

[QR25DE]
A
INFOID:0000000001502990

DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2. A three way catalyst (manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase. When the frequency ratio of A/F sensor 1 and heated oxygen sensor 2 approaches a specified limit value, the three way catalyst (manifold) malfunction is diagnosed.

EC C D E
SEF484YB

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Three way catalyst (manifold)

P0420

Catalyst system efficiency below threshold

· Three way catalyst (manifold) does not operate properly.
· Three way catalyst (manifold) does not have enough oxygen storage capacity.

· Exhaust tube · Intake air leaks · Fuel injector · Fuel injector leaks · Spark plug

G H

· Improper ignition timing

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON (READY).

6. Repeat following procedure 2 times.

- Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

- Stop vehicle.

NOTE:

Never turn ignition switch OFF.

7. Select "DTC & SRT CONFIRMATION" then "SRT WORK SUPPORT" mode with CONSULT-III.

8. Drive vehicle at a speed of 80 km/h (50 MPH) or more until "INCMP" of "CATALYST" changes to "CMPLT".

NOTE:

· Keep the vehicle speed as steady as possible during the cruising.

Revision: May 2007

EC-257

2007 Altima Hybrid

P0420 THREE WAY CATALYST FUNCTION

< COMPONENT DIAGNOSIS >

[QR25DE]

· It will take at most 3 minutes until "INCMP" of "CATALYST" changes to "CMPLT". 9. Check 1st trip DTC.

With GST 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY). 6. Repeat following procedure 3 times. - Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
NOTE: Keep the vehicle speed as steady as possible during the cruising. - Stop vehicle. NOTE: Never turn ignition switch OFF. 7. Check 1st trip DTC.

Is 1st tip DTC detected?

YES >> Go to EC-258, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502991

1.CHECK EXHAUST SYSTEM

Visually check exhaust tubes and muffler for dent.
Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace.
2.CHECK EXHAUST GAS LEAK

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine. 2. Listen for an exhaust gas leak before the three way catalyst (manifold).

Is exhaust gas leak detected?
YES >> Repair or replace. NO >> GO TO 3.
3.CHECK INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Repair or replace. NO >> GO TO 4.
4.CHECK IDLE SPEED AND IGNITION TIMING
1. Check idle speed. - For procedure, refer to EC-14, "IDLE SPEED : Special Repair Requirement". - For specification, refer to EC-455, "Idle Speed". 2. Check ignition timing. - For procedure, refer to EC-14, "IGNITION TIMING : Special Repair Requirement".

Revision: May 2007

EC-258

JMBIA0163GB
2007 Altima Hybrid

P0420 THREE WAY CATALYST FUNCTION
< COMPONENT DIAGNOSIS >
- For specification, refer to EC-455, "Ignition Timing". Is the inspection result normal?
YES >> GO TO 5. NO >> Follow the EC-11, "BASIC INSPECTION : Special Repair Requirement".
5.CHECK FUEL INJECTOR
1. Turn ignition switch OFF and then turn ON. 2. Check the voltage between ECM harness connector and ground.

[QR25DE]
A EC
C

ECM

Ground

Voltage

Connector

Terminal

F14

Ground

Battery voltage

Is the inspection result normal?

YES >> GO TO 6.

NO >> Perform EC-235, "Diagnosis Procedure".

6.CHECK FUNCTION OF IGNITION COIL-I

CAUTION:

Do the following procedure in the place where ventilation is good without the combustible.

1. Turn ignition switch OFF.

2. Remove fuel pump fuse in IPDM E/R to release fuel pressure.

NOTE:

Do not use CONSULT-III to release fuel pressure, or fuel pressure applies again during the following pro- I cedure.

3. Turn ignition switch ON (READY).

4. Depress accelerator pedal and keep it.

5. After engine stalls, check DTC.

If DTC is detected, erase DTC and go to next steps.

If DTC is not detected, go to next steps.

6. Turn ignition switch OFF.

7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.

8. Remove ignition coil and spark plug of the cylinder to be checked.

9. Repeat steps 3 to 5 for two or three times to remove combustion gas in the cylinder.

10. Connect spark plug and harness connector to ignition coil.

11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -

0.66 in) between the edge of the spark plug and grounded metal

portion as shown in the figure.

12. Turn ignition switch ON (READY).

13. Depress accelerator pedal for about 3 seconds, and check

whether spark is generated between the spark plug and the

grounded metal portion.

Spark should be generated.

CAUTION:

· Do not approach to the spark plug and the ignition coil

JMBIA0066GB

within 50 cm (19.7 in). Be careful not to get an electrical

shock while checking, because the electrical discharge voltage becomes 20kV or more.

· It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken.

NOTE:

When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal-

functioning.

Is the inspection result normal?

YES >> GO TO 10. NO >> GO TO 7.

Revision: May 2007

EC-259

2007 Altima Hybrid

P0420 THREE WAY CATALYST FUNCTION
< COMPONENT DIAGNOSIS >
7.CHECK FUNCTION OF IGNITION COIL-II

[QR25DE]

1. Turn ignition switch OFF. 2. Disconnect spark plug and connect a known-good spark plug. 3. Turn ignition switch ON (READY). 4. Depress the accelerator pedal to crank engine for about 3 seconds, and recheck whether spark is gener-
ated between the spark plug and the grounded metal portion.

Spark should be generated.

Is the inspection result normal?
YES >> GO TO 8. NO >> Check ignition coil, power transistor and their circuits. Refer to EC-380, "Diagnosis Procedure".
8.CHECK SPARK PLUG

Check the initial spark plug for fouling, etc.

Is the inspection result normal?

YES NO

>> Replace spark plug(s) with standard type one(s). For spark plug type, refer to EM-13, "Removal and Installation".
>> Repair or clean spark plug. Then GO TO 9.

SEF156I
9.CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs. 2. Turn ignition switch ON (READY). 3. Depress the accelerator pedal to crank engine for about three seconds, and recheck whether spark is
generated between the spark plug and the grounded portion.
Spark should be generated.
Is the inspection result normal?
YES >> INSPECTION END NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to EM-13, "Removal
and Installation".
10.CHECK FUEL INJECTOR
1. Turn ignition switch OFF. 2. Remove fuel injector assembly.
Refer to EM-34, "Removal and Installation". Keep fuel hose and all fuel injectors connected to fuel tube. 3. Disconnect all ignition coil harness connectors. 4. Reconnect all fuel injector harness connectors disconnected. 5. Turn ignition switch ON.
Does fuel drip from fuel injector?
YES >> GO TO 11. NO >> Replace the fuel injector(s) from which fuel is dripping.
11.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
Is the trouble fixed?
YES >> INSPECTION END NO >> Replace three way catalyst assembly.

Revision: May 2007

EC-260

2007 Altima Hybrid

P0441 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS >
P0441 EVAP CONTROL SYSTEM
DTC Logic

[QR25DE]
A
INFOID:0000000001502992

DTC DETECTION LOGIC

In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions.

Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP

canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP con- C trol system pressure sensor to intake manifold vacuum.

Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow

are adequate. If not, a malfunction is determined. D

PBIB1026E

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause
J
· EVAP canister purge volume control so-

lenoid valve stuck closed

· EVAP control system pressure sensor

and the circuit

EVAP control system does not operate proper- · Loose, disconnected or improper con-

P0441

EVAP control system in- ly, EVAP control system has a leak between in- nection of rubber tube

correct purge flow

take manifold and EVAP control system

· Blocked rubber tube

pressure sensor.

· Cracked EVAP canister

· EVAP canister purge volume control so-

lenoid valve circuit

· Blocked purge port

· EVAP canister vent control valve

DTC CONFIRMATION PROCEDURE

1.INSPECTION START

Do you have CONSULT-III?

YES >> GO TO 2.

NO >> GO TO 4.

2.PRECONDITIONING

Revision: May 2007

EC-261

2007 Altima Hybrid

P0441 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS >

[QR25DE]

>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-I

With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY). 6. Select "PURG FLOW P0441" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CON-
SULT-III. 7. Touch "START". 8. Depress the accelerator pedal to start engine, then keep engine running until "TESTING" changes to
"COMPLETED". (It will take at most 10 seconds.) 9. Touch "SELF-DIAG RESULT".
Which is displayed on CONSULT-III screen?
OK >> INSPECTION END NG >> Go to EC-263, "Diagnosis Procedure".
4.PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to EC-262, "Component Function Check". NOTE: Use component function check to check the overall monitoring function of the EVAP control system purge flow monitoring. During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-263, "Diagnosis Procedure".

Component Function Check

INFOID:0000000001502993

1.PERFORM COMPONENT FUNCTION CHECK

Without CONSULT-III 1. Lift up the vehicle. 2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 3. Turn ignition switch OFF and wait at least 10 seconds. 4. Turn ignition switch ON. 5. Turn ignition switch OFF and wait at least 10 seconds. 6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait at least 150 seconds. 7. Set voltmeter probes to ECM harness connector and ground.

Connector

ECM Terminal

Ground

E10

86 (EVAP control system pressure sensor signal)

Ground

8. Check EVAP control system pressure sensor value when vehicle is stopped and note it. 9. Establish and maintain the following conditions for at least 1 minute.

Vehicle speed 70 km/h (43 MPH) or more

Shift lever

D position

10. Verify that EVAP control system pressure sensor value stays 0.1V less than the value when vehicle is stopped (measured at step 8) for at least 1 second.
Is the inspection result normal? YES >> INSPECTION END

Revision: May 2007

EC-262

2007 Altima Hybrid

P0441 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS > NO >> Go to EC-263, "Diagnosis Procedure".
Diagnosis Procedure

[QR25DE]
A
INFOID:0000000001502994

1.CHECK EVAP CANISTER EC 1. Turn ignition switch OFF.
2. Check EVAP canister assembly for cracks.

Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 2.

YES-2 >> Without CONSULT-III: GO TO 3.

NO >> Replace EVAP canister.
2.CHECK PURGE FLOW

With CONSULT-III

1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser- E

vice port and install vacuum gauge. For the location of EVAP service port, refer to EC-67, "System Dia-

gram".

2. Turn ignition switch ON (READY).

3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III.

4. Rev engine up to 2,000 rpm.

5. Touch "Qd" and "Qu" on CONSULT-III screen to adjust "PURG VOL CONT/V" opening and check vacuum

existence.

PURG VOL CONT/V

Vacuum

100%

Existed

Not existed

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 4.

3.CHECK PURGE FLOW

Without CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.

2. Turn ignition switch OFF.

3. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-

vice port and install vacuum gauge. For the location of EVAP service port, refer to EC-67, "System Dia- L

gram".

4. Lift up the vehicle.

5. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle. 6. Wait at least 150 seconds.

7. Vehicle speed is 0 km/h (0 MPH).

8. Check vacuum hose for vacuum.

Vacuum should not exist.

9. Drive vehicle at a speed of 70 km/h (43 MPH) or more.

10. Check vacuum hose for vacuum.

Vacuum should exist.

Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 4.
4.CHECK EVAP PURGE LINE

1. Turn ignition switch OFF. 2. Check EVAP purge line for improper connection or disconnection.
Refer to EC-67, "System Diagram".

Revision: May 2007

EC-263

P 2007 Altima Hybrid

P0441 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> GO TO 5. NO >> Repair it.
5.CHECK EVAP PURGE HOSE AND PURGE PORT
1. Disconnect purge hoses connected to EVAP service port A and EVAP canister purge volume control solenoid valve B.
2. Blow air into each hose and EVAP purge port C.

[QR25DE]

3. Check that air flows freely.
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 6. YES-2 >> Without CONSULT-III: GO TO 7. NO >> Repair or clean hoses and/or purge port.

SEF367U

6.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

SEF368U

With CONSULT-III 1. Turn ignition switch ON (READY). 2. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 7.
7.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to EC-269, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 8. NO >> Replace EVAP canister purge volume control solenoid valve.
8.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector. 2. Check connectors for water.

Water should not exist.
Is the inspection result normal? YES >> GO TO 9. NO >> Replace EVAP control system pressure sensor.
9.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION
Refer to EC-285, "DTC Logic" for DTC P0452, EC-289, "DTC Logic" for DTC P0453. Is the inspection result normal?
YES >> GO TO 10.

Revision: May 2007

EC-264

2007 Altima Hybrid

P0441 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS > NO >> Replace EVAP control system pressure sensor.
10.CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging. Is the inspection result normal?
YES >> GO TO 11. NO >> Clean the rubber tube using an air blower.
11.CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-276, "Component Inspection". Is the inspection result normal?
YES >> GO TO 12. NO >> Replace EVAP canister vent control valve.
12.CHECK EVAP PURGE LINE
Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks. Refer to EC-67, "System Diagram". Is the inspection result normal?
YES >> GO TO 13. NO >> Replace it.
13.CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 14.
14.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-265

2007 Altima Hybrid

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Description

INFOID:0000000001502995

The EVAP canister purge volume control solenoid valve uses a ON/ OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

DTC Logic
DTC DETECTION LOGIC

JMBIA0069ZZ INFOID:0000000001502996

DTC No. P0443

Trouble diagnosis name
EVAP canister purge volume control solenoid valve

DTC detecting condition
The canister purge flow is detected during the specified driving conditions, even when EVAP canister purge volume control solenoid valve is completely closed.

Possible cause
· EVAP control system pressure sensor · EVAP canister purge volume control so-
lenoid valve (The valve is stuck open.) · EVAP canister vent control valve · EVAP canister · Hoses (Hoses are connected incorrectly or clogged.)

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: Always perform test at a temperature of 5°C (41°F) or more.
Do you have CONSULT-III
YES >> GO TO 2. NO >> GO TO 3.
2.PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON (READY). 6. Depress the accelerator pedal to start engine, then keep engine running for at least 10 seconds. 7. Select "PURG VOL CN/V P1444" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with
CONSULT-III. 8. Check that "COMPLETED" is displayed after touching "START".
If "COMPLETED" is not displayed, retry from step 1. 9. Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT-III?

Revision: May 2007

EC-266

2007 Altima Hybrid

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

OK >> INSPECTION END

NG >> Go to EC-267, "Diagnosis Procedure".

3.PERFORM DTC CONFIRMATION PROCEDURE

With GST 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 20 seconds.

6. Check 1st trip DTC.

Is 1st trip DTC displayed?

YES >> Go to EC-267, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001502997

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT F

1. Turn ignition switch OFF.

2. Disconnect EVAP canister purge volume control solenoid valve harness connector.

3. Turn ignition switch ON.

4. Check the voltage between EVAP canister purge volume control solenoid valve harness connector and

ground.

EVAP canister purge volume

control solenoid valve

Ground

Voltage

Connector

Terminal

F29

Ground

Battery voltage

Is the inspection result normal? J
YES >> GO TO 3.

NO >> GO TO 2.

2.DETECT MALFUNCTIONING PART

Check the following.

· Junction block E44, E45

· Harness connectors E80, F84

· Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R

· Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

M >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT

FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and O
ECM harness connector.

EVAP canister purge volume control solenoid valve

Connector

Terminal

ECM

Connector

Terminal

Continuity

F29

F14

Existed

4. Also check harness for short to ground and short to power. Is the inspection result normal?
YES >> GO TO 4.

Revision: May 2007

EC-267

P 2007 Altima Hybrid

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector. 2. Check connectors for water.

Water should not exist.
Is the inspection result normal?
YES >> GO TO 5. NO >> Replace EVAP control system pressure sensor.
5.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-284, "Component Inspection".
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 6. YES-2 >> Without CONSULT-III: GO TO 7. NO >> Replace EVAP control system pressure sensor.
6.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-III 1. Turn ignition switch OFF. 2. Reconnect harness connectors disconnected. 3. Turn ignition switch ON (READY). 4. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 7.
7.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-269, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 8. NO >> Replace EVAP canister purge volume control solenoid valve.
8.CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging.
Is the inspection result normal?
YES >> GO TO 9. NO >> Clean the rubber tube using an air blower.
9.CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-276, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 10. NO >> Replace EVAP canister vent control valve.
10.CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister assembly with EVAP canister vent control valve and EVAP control system pressure sensor attached.

Revision: May 2007

EC-268

2007 Altima Hybrid

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

2. Check if water will drain from EVAP canister.

Does water drain from the EVAP canister?

YES >> GO TO 11. NO >> GO TO 13.
EC

11.CHECK EVAP CANISTER

ALBIA0158ZZ
D

Weigh the EVAP canister assembly with the EVAP canister vent control valve and EVAP control system pres-

sure sensor attached. The weight should be less than 2.8 kg (6.2 lb).

Is the inspection result normal?

YES >> GO TO 13. NO >> GO TO 12.

12.DETECT MALFUNCTIONING PART

Check the following.

· EVAP canister for damage

· EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.
13.CHECK INTERMITTENT INCIDENT I Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection

J
INFOID:0000000001502998

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

1. Turn ignition switch OFF. 2. Reconnect all harness connectors disconnected.

3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4. Turn ignition switch ON (READY).

5. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III.

6. Touch "Qd" and "Qu" on CONSULT-III screen to adjust "PURG

VOL CONT/V" opening and check air passage continuity of

EVAP canister purge volume control solenoid valve under the following conditions.

Condition (PURG VOL CONT/V value)
100%
0%

Air passage continuity between (A) and (B)
Existed
Not existed

O
P
JMBIA0068ZZ

Without CONSULT-III 1. Turn ignition switch OFF. 2. Disconnect EVAP canister purge volume control solenoid valve harness connector. 3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

Revision: May 2007

EC-269

2007 Altima Hybrid

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

4. Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Condition

Air passage continuity between (A) and (B)

12V direct current supply between terminals 1 and 2

Existed

No supply

Not existed

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace EVAP canister purge volume control solenoid valve

Revision: May 2007

EC-270

2007 Altima Hybrid

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID

VALVE

Description
The EVAP canister purge volume control solenoid valve uses a ON/ OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

INFOID:0000000001502999
EC C

DTC Logic

JMBIA0069ZZ

INFOID:0000000001503000

DTC DETECTION LOGIC

DTC No.

Trouble diagnosis name

DTC detecting condition

G
Possible cause

P0444

EVAP canister purge volume control solenoid valve circuit open

· Harness or connectors

An excessively low voltage signal is sent to ECM through the valve

(The solenoid valve circuit is open or shorted.) · EVAP canister purge volume control so-

lenoid valve

P0445

EVAP canister purge volume control solenoid valve circuit shorted

An excessively high voltage signal is sent to ECM through the valve

· Harness or connectors (The solenoid valve circuit is shorted.)
· EVAP canister purge volume control solenoid valve

DTC CONFIRMATION PROCEDURE

1.CONDITIONING

K If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm battery voltage is more than 11V at idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 13 seconds.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-271, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

P
INFOID:0000000001503001

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF. 2. Disconnect EVAP canister purge volume control solenoid valve harness connector. 3. Turn ignition switch ON.

Revision: May 2007

EC-271

2007 Altima Hybrid

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

4. Check the voltage between EVAP canister purge volume control solenoid valve harness connector and ground.

EVAP canister purge volume control solenoid valve

Connector

Terminal

Ground

Voltage

F29

Ground

Battery voltage

Is the inspection result normal?
YES >> GO TO 3. NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART

Check the following. · Junction block E44, E45 · Harness connectors E80, F84 · Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R · Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
ECM harness connector.

EVAP canister purge volume control solenoid valve

Connector

Terminal

ECM

Connector

Terminal

Continuity

F29

F14

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 4. YES-2 >> Without CONSULT-III: GO TO 5. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III 1. Reconnect all harness connectors disconnected. 2. Turn ignition switch ON (READY). 3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
Is the inspection result normal?
YES >> GO TO 6. NO >> GO TO 5.
5.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to EC-273, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 6. NO >> Replace EVAP canister purge volume control solenoid valve.
6.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

Revision: May 2007

EC-272

2007 Altima Hybrid

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID

VALVE

< COMPONENT DIAGNOSIS >

[QR25DE]

>> INSPECTION END
Component Inspection

A
INFOID:0000000001503002

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

1. Turn ignition switch OFF.

2. Reconnect all harness connectors disconnected.

3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4. Turn ignition switch ON (READY).

5. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III.

6. Touch "Qd" and "Qu" on CONSULT-III screen to adjust "PURG

VOL CONT/V" opening and check air passage continuity of

EVAP canister purge volume control solenoid valve under the

following conditions.

Condition

Air passage continuity

(PURG VOL CONT/V value)

between (A) and (B)

100%

Existed

Not existed

JMBIA0068ZZ

Without CONSULT-III

1. Turn ignition switch OFF.

2. Disconnect EVAP canister purge volume control solenoid valve harness connector.

3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4. Check air passage continuity of EVAP canister purge volume control solenoid valve under the following

conditions.

Condition

Air passage continuity between (A) and (B)

12V direct current supply between terminals 1 and 2

Existed

No supply

Not existed

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace EVAP canister purge volume control solenoid valve

Revision: May 2007

EC-273

2007 Altima Hybrid

P0447 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS >
P0447 EVAP CANISTER VENT CONTROL VALVE
Description
The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent. This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. This solenoid valve is used only for diagnosis, and usually remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows "EVAP Control System" diagnosis.
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001503003
PBIB1263E INFOID:0000000001503004

DTC No. Trouble diagnosis name

DTC detecting condition

P0447

EVAP canister vent con- An improper voltage signal is sent to ECM trol valve circuit open through EVAP canister vent control valve.

Possible cause
· Harness or connectors (The valve circuit is open or shorted.)
· EVAP canister vent control valve

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY). 2. Depress the accelerator pedal to start engine, then keep engine running for at least 8 seconds. 3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-274, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503005

1.INSPECTION START

Do you have CONSULT-III?
Do you have CONSULT-III?
YES >> GO TO 2. NO >> GO TO 3.
2.CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT

With CONSULT-III 1. Turn ignition switch OFF and then turn ON.

Revision: May 2007

EC-274

2007 Altima Hybrid

P0447 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS >
2. Select "VENT CONTROL/V" in "ACTIVE TEST" mode with CONSULT-III. 3. Touch "ON/OFF" on CONSULT-III screen. 4. Check for operating sound of the valve.

[QR25DE]
A

Clicking sound should be heard.

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 3.

3.CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF. 2. Disconnect EVAP canister vent control valve harness connector.

3. Turn ignition switch ON.

4. Check the voltage between EVAP canister vent control valve harness connector and ground.

EVAP canister vent control valve

Ground

Voltage

Connector

Terminal

B39

Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 5.

NO >> GO TO 4.

4.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors E80, F84

· Harness connectors E29, B10

· Harness for open or short between EVAP canister vent control valve and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT J

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between EVAP canister vent control valve harness connector and ECM harness con-

nector.

EVAP canister vent control valve

ECM

Continuity

Connector

Terminal Connector Terminal

B39

E10

109

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 6.

6.DETECT MALFUNCTIONING PART O

Check the following.

· Junction block connector E44, E45

· Harness connectors E29, B10 · Harness for open or short between EVAP canister vent control valve and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging.

Revision: May 2007

EC-275

2007 Altima Hybrid

P0447 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS > Is the inspection result normal?
YES >> GO TO 8. NO >> Clean the rubber tube using an air blower.
8.CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-276, "Component Inspection". Is the inspection result normal?
YES >> GO TO 9. NO >> Replace EVAP canister vent control valve.
9.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK EVAP CANISTER VENT CONTROL VALVE-I
1. Turn ignition switch OFF. 2. Remove EVAP canister vent control valve from EVAP canister. 3. Check portion (B) of EVAP canister vent control valve for being
rusted. Is it rusted?
YES >> Replace EVAP canister vent control valve NO >> GO TO 2.

[QR25DE]
INFOID:0000000001503006

2.CHECK EVAP CANISTER VENT CONTROL VALVE-II
With CONSULT-III 1. Reconnect harness connectors disconnected. 2. Turn ignition switch ON. 3. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode. 4. Check air passage continuity and operation delay time.
Make sure new O-ring is installed properly.

Condition VENT CONTROL/V Air passage continuity between (A) and (B)

Not existed

OFF

Existed

Operation takes less than 1 second.
Without CONSULT-III Check air passage continuity and operation delay time under the following conditions. Make sure new O-ring is installed properly.

Condition

Air passage continuity between (A) and (B)

12V direct current supply between terminals (1) and (2)

Not existed

OFF

Existed

Operation takes less than 1 second.

Is the inspection result normal?

Revision: May 2007

EC-276

JMBIA0168ZZ JMBIA0169ZZ
2007 Altima Hybrid

P0447 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS >
YES >> GO TO 3. NO >> Replace EVAP canister vent control valve
3.CHECK EVAP CANISTER VENT CONTROL VALVE-III

[QR25DE]
A

With CONSULT-III 1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.

2. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.

3. Check air passage continuity and operation delay time.

Make sure new O-ring is installed properly.

Condition VENT CONTROL/V Air passage continuity between (A) and (B)

Not existed

OFF

Existed

Operation takes less than 1 second.
Without CONSULT-III 1. Clean the air passage [portion (A) to (B)] of EVAP canister vent
control valve using an air blower. 2. Check air passage continuity and operation delay time under the
following conditions. Make sure new O-ring is installed properly.

Condition

Air passage continuity between (A) and (B)

12V direct current supply between terminals (1) and (2)

Not existed

OFF

Existed

Operation takes less than 1 second.

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace EVAP canister vent control valve

D E
JMBIA0169ZZ
F G H I J

Revision: May 2007

EC-277

2007 Altima Hybrid

P0448 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS >
P0448 EVAP CANISTER VENT CONTROL VALVE
Description
The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent. This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. This solenoid valve is used only for diagnosis, and usually remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows "EVAP Control System" diagnosis.
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001503007
PBIB1263E INFOID:0000000001503008

DTC No. Trouble diagnosis name

DTC detecting condition

P0448

EVAP canister vent con- EVAP canister vent control valve remains

trol valve close

closed under specified driving conditions.

Possible cause
· EVAP canister vent control valve · EVAP control system pressure sensor
and the circuit · Blocked rubber tube to EVAP canister
vent control valve · EVAP canister is saturated with water

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (READY) and wait at least 150 seconds. 2. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
CAUTION: Always drive vehicle at a safe speed. NOTE: Never fully release accelerator pedal during the cruising. 3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-278, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK RUBBER TUBE

INFOID:0000000001503009

Revision: May 2007

EC-278

2007 Altima Hybrid

P0448 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS >

[QR25DE]

1. Turn ignition switch OFF.

2. Disconnect rubber tube connected to EVAP canister vent control valve.

3. Check the rubber tube for clogging.

Is the inspection result normal?

YES >> GO TO 2.

NO >> Clean rubber tube using an air blower.

2.CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to EC-276, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 3. NO >> Replace EVAP canister vent control valve.

3.CHECK IF EVAP CANISTER SATURATED WITH WATER

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor E attached.
2. Check if water will drain from the EVAP canister.

Does water drain from EVAP canister?

YES >> GO TO 4.

NO >> GO TO 6.

4.CHECK EVAP CANISTER

ALBIA0158ZZ
I

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor

attached.

The weight should be less than 2.8 kg (6.2 lb).

Is the inspection result normal?

YES >> GO TO 6.

NO >> GO TO 5.

5.DETECT MALFUNCTIONING PART

Check the following.

· EVAP canister for damage

· EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.

6.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector.

2. Check connectors for water.

Water should not exist.

Is the inspection result normal?

YES >> GO TO 7. NO >> Replace EVAP control system pressure sensor.

7.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to EC-284, "Component Inspection".
Is the inspection result normal? YES >> GO TO 8. NO >> Replace EVAP control system pressure sensor.

Revision: May 2007

EC-279

2007 Altima Hybrid

P0448 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS >
8.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK EVAP CANISTER VENT CONTROL VALVE-I
1. Turn ignition switch OFF. 2. Remove EVAP canister vent control valve from EVAP canister. 3. Check portion (B) of EVAP canister vent control valve for being
rusted. Is it rusted?
YES >> Replace EVAP canister vent control valve NO >> GO TO 2.

[QR25DE]
INFOID:0000000001503010

JMBIA0168ZZ

Condition VENT CONTROL/V Air passage continuity between (A) and (B)

Not existed

OFF

Existed

Operation takes less than 1 second.
Without CONSULT-III Check air passage continuity and operation delay time under the following conditions. Make sure new O-ring is installed properly.

JMBIA0169ZZ

Condition

Air passage continuity between (A) and (B)

12V direct current supply between terminals (1) and (2)

Not existed

OFF

Existed

Operation takes less than 1 second.
Is the inspection result normal?
YES >> GO TO 3. NO >> Replace EVAP canister vent control valve
3.CHECK EVAP CANISTER VENT CONTROL VALVE-III

With CONSULT-III 1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower. 2. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.

Revision: May 2007

EC-280

2007 Altima Hybrid

P0448 EVAP CANISTER VENT CONTROL VALVE
< COMPONENT DIAGNOSIS >
3. Check air passage continuity and operation delay time. Make sure new O-ring is installed properly.

Condition VENT CONTROL/V Air passage continuity between (A) and (B)

Not existed

OFF

Existed

Condition

Air passage continuity between (A) and (B)

12V direct current supply between terminals (1) and (2)

Not existed

OFF

Existed

Operation takes less than 1 second.

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace EVAP canister vent control valve

[QR25DE]
A EC
C
JMBIA0169ZZ
D E F G H I J K L M N O P

Revision: May 2007

EC-281

2007 Altima Hybrid

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
Description
The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases.

[QR25DE]
INFOID:0000000001503011

DTC Logic
DTC DETECTION LOGIC

PBIB3370E INFOID:0000000001503012

DTC No. P0451

Trouble diagnosis name

DTC detecting condition

EVAP control system pressure sensor performance

ECM detects a sloshing signal from the EVAP control system pressure sensor

Possible cause
· Harness or connectors (EVAP control system pressure sensor circuit is shorted.) [Crankshaft position sensor (POS) circuit is shorted.] (Refrigerant pressure sensor circuit is shorted.)
· EVAP control system pressure sensor · Crankshaft position sensor (POS) · Refrigerant pressure sensor

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait at least 40 seconds.
NOTE: Do not depress accelerator pedal even slightly. 3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-282, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503013

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?

Revision: May 2007

EC-282

2007 Altima Hybrid

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
YES >> GO TO 2. NO >> Repair or replace ground connection.
2.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Disconnect EVAP control system pressure sensor harness connector. 2. Check sensor harness connector for water.

[QR25DE]
A EC

Water should not exist. C
Is the inspection result normal?

YES >> GO TO 3.

NO >> Repair or replace harness connector.
3.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check the voltage between EVAP control system pressure sensor harness connector and ground.

EVAP control system pressure sensor

Connector

Terminal

Ground

Voltage

B41

Ground

Approx. 5V

Is the inspection result normal?

YES >> GO TO 6.

NO >> GO TO 4.

4.CHECK SENSOR POWER SUPPLY CIRCUITS

Check harness for short to power and short to ground, between the following terminals.

ECM

Sensor

Connector

Terminal

Name

Connector Terminal

Refrigerant pressure sensor

F13

E219

CKP sensor (POS)

F30

E10

EVAP control system pressure sensor

B41

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair short to ground or short to power in harness or connectors.

5.CHECK COMPONENTS

Check the following.

· Crankshaft position sensor (POS) (Refer to EC-251, "Component Inspection".)

· Refrigerant pressure sensor

Is the inspection result normal?

YES >> GO TO 7.

NO >> Replace malfunctioning component.

6.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to EC-284, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 7.

NO >> Replace EVAP control system pressure sensor.

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Revision: May 2007

EC-283

2007 Altima Hybrid

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
Component Inspection

[QR25DE]
INFOID:0000000001503014

1.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

1. Turn ignition switch OFF. 2. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.
Always replace O-ring with a new one. 3. Install a vacuum pump to EVAP control system pressure sensor. 4. Turn ignition switch ON and check output voltage between ECM harness connector and ground under the
following conditions.

Connector

ECM Terminal

Condition [Applied vacuum kPa (kg/cm2, psi)

Voltage

E10

86 (EVAP control system pressure sensor signal)

Not applied -26.7 (-0.272, -3.87)

1.8 - 4.8V 2.1 to 2.5V lower than above value

CAUTION: · Always calibrate the vacuum pump gauge when using it. · Do not apply below -93.3 kPa (-0.952 kg/cm2, -13.53 psi) or pressure over 101.3 kPa (1.033 kg/
cm2, 14.69 psi).
Is the inspection result normal?
YES >> INSPECTION END NO >> Replace EVAP control system pressure sensor

Revision: May 2007

EC-284

2007 Altima Hybrid

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Description
The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases.

[QR25DE]
A
INFOID:0000000001503015
EC
C

DTC Logic
DTC DETECTION LOGIC

PBIB3370E

INFOID:0000000001503016

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Harness or connectors

(EVAP control system pressure sensor

circuit is open or shorted.)

P0452

EVAP control system pressure sensor low input

An excessively low voltage from the sensor is sent to ECM.

[Crankshaft position sensor (POS) circuit H
is shorted.) (Refrigerant pressure sensor circuit is shorted.)

· EVAP control system pressure sensor

· Crankshaft position sensor (POS)

· Refrigerant pressure sensor

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- K

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Always perform test at a temperature of 5°C (41°F) or more.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Select "DATA MONITOR" mode with CONSULT-III. 5. Make sure that "FUEL T/TMP SE" is more than 0°C (32°F).

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait at least 20 seconds.

7. Check 1st trip DTC.

With GST

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Set voltmeter probes to ECM harness connector and ground as follows.

Revision: May 2007

EC-285

2007 Altima Hybrid

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >

[QR25DE]

Connector

ECM Terminal

Ground

E10

95 (Fuel tank temperature sensor signal)

Ground

3. Make sure that the voltage is less than 4.2V. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Activate "INSPECTION MODE 1" (HBC-103) to start engine and wait at least 20 seconds. 6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-286, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503017

1.CHECK GROUND CONNECTION

1. Disconnect EVAP control system pressure sensor harness connector. 2. Check sensor harness connector for water.

Water should not exist.
Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace harness connector.
3.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON. 2. Check the voltage between EVAP control system pressure sensor harness connector and ground.

EVAP control system pressure sensor

Connector

Terminal

Ground

Voltage

B41

Ground

Approx. 5V

Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 4.
4.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between EVAP control system pressure sensor harness connector and ECM har-
ness connector.

EVAP control system pressure sensor

ECM

Connector

Terminal

Connector

Terminal

B41

E10

Is the inspection result normal? YES >> GO TO 6.

Continuity Existed

Revision: May 2007

EC-286

2007 Altima Hybrid

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following. · Harness connectors B10, E29 · Harness for open or short between EVAP control system pressure sensor and ECM

[QR25DE]
A EC

>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK SENSOR POWER SUPPLY CIRCUITS

Check harness for short to power and short to ground, between the following terminals. D

ECM

Sensor

Connector

Terminal

Name

Connector Terminal

Refrigerant pressure sensor

E219

F13

CKP sensor (POS)

F30

E10

EVAP control system pressure sensor

B41

Is the inspection result normal?

YES >> GO TO 7.

NO >> Repair short to ground or short to power in harness or connectors.

7.CHECK COMPONENTS

Check the following.

· Crankshaft position sensor (POS) (Refer to EC-251, "Component Inspection".)

· Refrigerant pressure sensor

Is the inspection result normal?

YES >> GO TO 13.

NO >> Replace malfunctioning component.

8.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT J

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between EVAP control system pressure sensor harness connector and ECM har- K
ness connector.

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B41

E10

Existed

M 4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 10.

NO >> GO TO 9.

9.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors B10, E29

· Harness for open or short between EVAP control system pressure sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
10.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND

SHORT

1. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

Revision: May 2007

EC-287

2007 Altima Hybrid

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >

[QR25DE]

EVAP control system pressure sensor

Connector

Terminal

ECM

Connector

Terminal

Continuity

B41

E10

Existed

2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 12. NO >> GO TO 11.
11.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors B10, E29 · Harness for open or short between EVAP control system pressure sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
12.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-284, "Component Inspection". Is the inspection result normal?
YES >> GO TO 13. NO >> Replace EVAP control system pressure sensor.
13.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Component Inspection

INFOID:0000000001503018

1.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Connector

ECM Terminal

Condition [Applied vacuum kPa (kg/cm2, psi)

Voltage

E10

86 (EVAP control system pressure sensor signal)

Not applied -26.7 (-0.272, -3.87)

1.8 - 4.8V 2.1 to 2.5V lower than above value

Revision: May 2007

EC-288

2007 Altima Hybrid

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Description
The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases.

[QR25DE]
A
INFOID:0000000001503019
EC
C

DTC Logic
DTC DETECTION LOGIC

PBIB3370E

INFOID:0000000001503020

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Harness or connectors

(EVAP control system pressure sensor

circuit is open or shorted.)

[Crankshaft position sensor (POS) circuit H

is shorted.]

P0453

EVAP control system pressure sensor high input

An excessively high voltage from the sensor is sent to ECM.

(Refrigerant pressure sensor circuit is shorted.) · EVAP control system pressure sensor · Crankshaft position sensor (POS)

· Refrigerant pressure sensor

· EVAP canister vent control valve · EVAP canister

· Rubber hose from EVAP canister vent

control valve to vehicle frame

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- L

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Always perform test at a temperature of 5°C (41°F) or more. N

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Select "DATA MONITOR" mode with CONSULT-III.

5. Make sure that "FUEL T/TMP SE" is more than 0°C (32°F).

6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait at least 20 seconds.

7. Check 1st trip DTC.

With GST

Revision: May 2007

EC-289

2007 Altima Hybrid

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

< COMPONENT DIAGNOSIS >

[QR25DE]

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
2. Set voltmeter probes to ECM harness connector and ground as follows.

Connector

ECM Terminal

Ground

E10

95 (Fuel tank temperature sensor signal)

Ground

3. Make sure that the voltage is less than 4.2V. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait at least 20 seconds. 6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-290, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503021

1.CHECK GROUND CONNECTION

1. Disconnect EVAP control system pressure sensor harness connector. 2. Check sensor harness connector for water.

Water should not exist.
Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace harness connector.
3.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch ON. 2. Check the voltage between EVAP control system pressure sensor harness connector and ground.

EVAP control system pressure sensor

Connector

Terminal

Ground

Voltage

B41

Ground

Approx. 5V

Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 4.
4.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between EVAP control system pressure sensor harness connector and ECM har-
ness connector.

EVAP control system pressure sensor

Connector

Terminal

B41

Revision: May 2007

ECM

Connector

Terminal

E10

EC-290

Continuity Existed

2007 Altima Hybrid

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS > Is the inspection result normal?
YES >> GO TO 6. NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following. · Harness connectors B10, E29 · Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.

[QR25DE]
A EC
C D

ECM

Sensor

Connector

Terminal

Name

Connector Terminal

Refrigerant pressure sensor

F13

E219

CKP sensor (POS)

F30

E10

EVAP control system pressure sensor

B41

Is the inspection result normal?

YES >> GO TO 7.

NO >> Repair short to ground or short to power in harness or connectors.

7.CHECK COMPONENTS

Check the following.

· Crankshaft position sensor (POS) (Refer to EC-251, "Component Inspection".) · Refrigerant pressure sensor

Is the inspection result normal?

YES >> GO TO 18.

NO >> Replace malfunctioning component.

8.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between EVAP control system pressure sensor harness connector and ECM har-

ness connector.

EVAP control system pressure sensor

ECM

Connector

Terminal

Connector

Terminal

Continuity

B41

E10

Existed

4. Also check harness for short to ground and short to power. N
Is the inspection result normal?

YES >> GO TO 10.

NO >> GO TO 9.
9.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors B10, E29

· Harness for open or short between EVAP control system pressure sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
10.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT

Revision: May 2007

EC-291

2007 Altima Hybrid

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

< COMPONENT DIAGNOSIS >

[QR25DE]

1. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

EVAP control system pressure sensor

Connector

Terminal

ECM

Connector

Terminal

Continuity

B41

E10

Existed

2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 12. NO >> GO TO 11.
11.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors B10, E29 · Harness for open or short between EVAP control system pressure sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.
12.CHECK RUBBER TUBE
1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging.
Is the inspection result normal?
YES >> GO TO 13. NO >> Clean the rubber tube using an air blower, repair or replace rubber tube.
13.CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-276, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 14. NO >> Replace EVAP canister vent control valve.
14.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-293, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 15. NO >> Replace EVAP control system pressure sensor.
15.CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
2. Check if water will drain from the EVAP canister.
Does water drain from EVAP canister?
YES >> GO TO 16. NO >> GO TO 18.

16.CHECK EVAP CANISTER

ALBIA0158ZZ

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.8 kg (6.2 lb).

Revision: May 2007

EC-292

2007 Altima Hybrid

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
< COMPONENT DIAGNOSIS > Is the inspection result normal?
YES >> GO TO 18. NO >> GO TO 17.
17.DETECT MALFUNCTIONING PART
Check the following. · EVAP canister for damage · EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
>> Repair hose or replace EVAP canister.
18.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

[QR25DE]
A EC
C D

>> INSPECTION END

Component Inspection

INFOID:0000000001503022

1.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

1. Turn ignition switch OFF.

2. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister. G

Always replace O-ring with a new one.

3. Install a vacuum pump to EVAP control system pressure sensor.

4. Turn ignition switch ON and check output voltage between ECM harness connector and ground under the following conditions.

Connector

ECM Terminal

Condition [Applied vacuum kPa (kg/cm2, psi)

Voltage

E10

86 (EVAP control system pressure sensor signal)

Not applied -26.7 (-0.272, -3.87)

1.8 - 4.8V
2.1 to 2.5V lower than above value J

CAUTION: · Always calibrate the vacuum pump gauge when using it. · Do not apply below -93.3 kPa (-0.952 kg/cm2, -13.53 psi) or pressure over 101.3 kPa (1.033 kg/ K
cm2, 14.69 psi).

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace EVAP control system pressure sensor

Revision: May 2007

EC-293

2007 Altima Hybrid

P0456 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS >
P0456 EVAP CONTROL SYSTEM
DTC Logic

[QR25DE]
INFOID:0000000001503023

DTC DETECTION LOGIC
This diagnosis detects leaks in the EVAP line between fuel tank and EVAP canister purge volume control solenoid valve, using the negative pressure caused by decrease of fuel temperature in the fuel tank after turning ignition switch OFF. If ECM judges there are no leaks, the diagnosis will be OK.

PBIB1026E

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0456

Evaporative emission control system leak

· EVAP system has a leak. · EVAP system does not operate prop-
erly.

· Incorrect fuel tank vacuum relief valve · Incorrect fuel filler cap used · Fuel filler cap remains open or fails to close. · Foreign matter caught in fuel filler cap. · Leak is in line between intake manifold and EVAP
canister purge volume control solenoid valve. · Foreign matter caught in EVAP canister vent con-
trol valve. · EVAP canister or fuel tank leaks · EVAP purge line (pipe and rubber tube) leaks · EVAP purge line rubber tube bent · Loose or disconnected rubber tube · EVAP canister vent control valve and the circuit · EVAP canister purge volume control solenoid
valve and the circuit · Fuel tank temperature sensor · O-ring of EVAP canister vent control valve is miss-
ing or damaged · EVAP canister is saturated with water · EVAP control system pressure sensor · Refueling EVAP vapor cut valve · ORVR system leaks · Fuel level sensor and the circuit · Foreign matter caught in EVAP canister purge vol-
ume control solenoid valve

CAUTION: · Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the
MIL may come on. · If the fuel filler cap is not tightened properly, the MIL may come on. · Use only a genuine NISSAN rubber tube as a replacement.

DTC CONFIRMATION PROCEDURE

Revision: May 2007

EC-294

2007 Altima Hybrid

P0456 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS >

[QR25DE]

1.PRECONDITIONING A

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

Do you have CONSULT-III?

YES >> GO TO 2.

NO >> GO TO 4.

2.PERFORM DTC CONFIRMATION PROCEDURE-I

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine.

2. Select "EVAP DIAG READY" in "DATA MONITOR" mode with CONSULT-III.

3. Wait at idle until "OFF" of "EVAP DIAG READY" changes to "ON".

NOTE:

It will take at most 2 hours until "OFF" of "EVAP DIAG READY" changes to "ON".

4. Turn ignition switch OFF and wait at least 90 minutes.

NOTE:

Never turn ignition switch ON during 90 minutes.

5. Turn ignition switch ON and select "EVAP LEA DIAG" in "DATA MONITOR" mode with CONSULT-III.

6. Check that "EVAP LEA DIAG" indication.

Which is displayed on CONSULT-III?

CMPLT >> GO TO 3.

YET >> Perform DTC CONFIRMATION PROCEDURE again. GO TO 1.

3.PERFORM DTC CONFIRMATION PROCEDURE-II

Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-295, "Diagnosis Procedure". NO >> INSPECTION END.

4.PERFORM DTC CONFIRMATION PROCEDURE

With GST

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine.

2. Wait engine idle for at least 2 hours.

3. Turn ignition switch OFF and wait at least 90 minutes.

NOTE:

Never turn ignition switch ON during 90 minutes.

4. Turn ignition switch ON.

5. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-295, "Diagnosis Procedure".

NO >> INSPECTION END.

Diagnosis Procedure

INFOID:0000000001503024

1.CHECK FUEL FILLER CAP DESIGN

1. Turn ignition switch OFF. P

Revision: May 2007

EC-295

2007 Altima Hybrid

P0456 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS > 2. Check for genuine NISSAN fuel filler cap design. Is the inspection result normal?
YES >> GO TO 2. NO >> Replace with genuine NISSAN fuel filler cap.

[QR25DE]

2.CHECK FUEL FILLER CAP INSTALLATION

SEF915U

Check that the cap is tightened properly by rotating the cap clockwise.
Is the inspection result normal?
YES >> GO TO 3. NO >> Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. Then retighten
until ratcheting sound is heard.
3.CHECK FUEL FILLER CAP FUNCTION

Check for air releasing sound while opening the fuel filler cap.
Is the inspection result normal?
YES >> GO TO 5. NO >> GO TO 4.
4.CHECK FUEL TANK VACUUM RELIEF VALVE

Refer to EC-299, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 5. NO >> Replace fuel filler cap with a genuine one.
5.CHECK FOR EVAP LEAK

Refer to EC-451, "Inspection".
Is there any leak in EVAP line?
YES >> Repair or replace. NO >> GO TO 6.
6.CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following. · EVAP canister vent control valve is installed properly.
Refer to EC-453, "Exploded View". · EVAP canister vent control valve.
Refer to EC-276, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 7. NO >> Repair or replace EVAP canister vent control valve and O-ring.
7.CHECK IF EVAP CANISTER SATURATED WITH WATER

1. Remove EVAP canister assembly with EVAP canister vent control valve and EVAP control system pressure sensor attached.

Revision: May 2007

EC-296

2007 Altima Hybrid

P0456 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS >
2. Check if water will drain from the EVAP canister. Does water drain from EVAP canister?
YES >> GO TO 8. NO-1 >> With CONSULT-III: GO TO 10. NO-2 >> Without CONSULT-III: GO TO 11.

[QR25DE]
A EC

8.CHECK EVAP CANISTER

ALBIA0158ZZ
D

Weigh the EVAP canister assembly with the EVAP canister vent control valve and EVAP control system pres-

sure sensor attached. The weight should be less than 2.8 kg (6.2 lb).

Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 10. YES-2 >> Without CONSULT-III: GO TO 11.

NO >> GO TO 9.

9.DETECT MALFUNCTIONING PART

Check the following.

· EVAP canister for damage

· EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.

10.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

1. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. 2. Turn ignition switch ON (READY).

3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode.

4. Touch "Qu" on CONSULT-III screen to increase "PURG VOL CONT/V" opening to 100%.

5. Check vacuum hose for vacuum.

Vacuum should exist.

Is the inspection result normal?

YES >> GO TO 13.

NO >> GO TO 12.

11.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT-III

1. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. 2. Lift up the vehicle.

3. Activate "INSPECTION MODE 1" (HBC-103).

4. Wait at least 150 seconds.

5. Drive vehicle at a speed of 70 km/h (43 MPH) or more.

6. Check vacuum hose for vacuum.

Vacuum should exist.

Is the inspection result normal?

YES >> GO TO 13. NO >> GO TO 12.
12.CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to EC-67, "System Diagram".

Revision: May 2007

EC-297

2007 Altima Hybrid

P0456 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> GO TO 13. NO >> Repair or reconnect the hose.
13.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

[QR25DE]

Refer to EC-269, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 14. NO >> Replace EVAP canister purge volume control solenoid valve.
14.CHECK FUEL TANK TEMPERATURE SENSOR

Refer to EC-231, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 15. NO >> Replace fuel level sensor unit.
15.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to EC-284, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 16. NO >> Replace EVAP control system pressure sensor.
16.CHECK EVAP PURGE LINE

Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection. Refer to EC-69, "System Description".
Is the inspection result normal?
YES >> GO TO 17. NO >> Repair or reconnect the hose.
17.CLEAN EVAP PURGE LINE

Clean EVAP purge line (pipe and rubber tube) using air blower.

>> GO TO 18.
18.CHECK EVAP/ORVR LINE

Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper connection. For location, refer to EC-386, "Description".
Is the inspection result normal?
YES >> GO TO 19. NO >> Repair or replace hoses and tubes.
19.CHECK RECIRCULATION LINE

Check recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, looseness and improper connection.
Is the inspection result normal?
YES >> GO TO 20. NO >> Repair or replace hose, tube or filler neck tube.
20.CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to EC-389, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 21. NO >> Replace refueling EVAP vapor cut valve with fuel tank.
21.CHECK FUEL LEVEL SENSOR

Refer to MWI-24, "Component Inspection". Is the inspection result normal?

Revision: May 2007

EC-298

2007 Altima Hybrid

P0456 EVAP CONTROL SYSTEM
< COMPONENT DIAGNOSIS > YES >> GO TO 22. NO >> Replace fuel level sensor unit.
22.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK FUEL TANL VACUUM RELIEF VALVE
1. Turn ignition switch OFF. 2. Remove fuel filler cap. 3. Wipe clean valve housing.

[QR25DE]
A

INFOID:0000000001503025

4. Check valve opening pressure and vacuum.

SEF445Y
H

Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm2, 2.22 -

2.90 psi)

Vacuum: -6.0 to -3.3 kPa (-0.061 to -0.034 kg/cm2,

-0.87 to -0.48 psi)

Is the inspection result normal?

YES >> INSPECTION END NO >> GO TO 2.
2.REPLACE FUEL FILLER CAP

K
SEF943S
L

Replace fuel filler cap.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.

>> INSPECTION END

Revision: May 2007

EC-299

2007 Altima Hybrid

P0460 FUEL LEVEL SENSOR
< COMPONENT DIAGNOSIS >
P0460 FUEL LEVEL SENSOR

[QR25DE]

Description

INFOID:0000000001503026

The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combination meter sends the fuel level sensor signal to the ECM through CAN communication line. It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output voltage changes depending on the movement of the fuel mechanical float.

DTC Logic

INFOID:0000000001503027

DTC DETECTION LOGIC
NOTE: If DTC P0460 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. When the vehicle is parked, naturally the fuel level in the fuel tank is stable. It means that output signal of the fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunction is detected.

DTC No. P0460

Trouble diagnosis name

DTC detecting condition

Possible cause

Fuel level sensor circuit noise

Even though the vehicle is parked, a signal being varied is sent from the fuel level sensor to ECM.

· Harness or connectors (The CAN communication line is open or shorted)
· Harness or connectors (The sensor circuit is open or shorted)
· Combination meter · Fuel level sensor

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and wait maximum of 2 consecutive minutes. 2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-300, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503028

1.CHECK COMBINATION METER FUNCTION

Refer to MWI-23, "Component Function Check".
Is the inspection result normal?
YES >> GO TO 2. NO >> Go to MWI-15, "Diagnosis Description"
2.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Revision: May 2007

EC-300

2007 Altima Hybrid

P0461 FUEL LEVEL SENSOR
< COMPONENT DIAGNOSIS >
P0461 FUEL LEVEL SENSOR
Description

[QR25DE]
A
INFOID:0000000001503029

The fuel level sensor is mounted in the fuel level sensor unit.

The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combina-

tion meter sends the fuel level sensor signal to the ECM through CAN communication line.

It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output volt-

age changes depending on the movement of the fuel mechanical float.

DTC Logic

INFOID:0000000001503030

D
DTC DETECTION LOGIC

NOTE:

If DTC P0461 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. Driving long distances naturally affect fuel gauge level.

This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has

been driven.

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0461

· Harness or connectors

Fuel level sensor circuit range/performance

The output signal of the fuel level sensor does not change within the specified range even though the vehicle has been driven a long distance.

(The CAN communication line is open or shorted) · Harness or connectors (The sensor circuit is open or shorted) · Combination meter

G H

· Fuel level sensor

DTC CONFIRMATION PROCEDURE

1.PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to EC-301, "Component Function Check".

Use component function check to check the overall function of the fuel level sensor function. During this

check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES >> INSPECTION END NO >> Go to EC-302, "Diagnosis Procedure".
Component Function Check

L
INFOID:0000000001503031

1.PRECONDITIONING M

WARNING:

When performing following procedure, be sure to observe the handling of the fuel. Refer to FL-11,

"Removal and Installation".

TESTING CONDITION:

Before starting component function check, preparation of draining fuel and refilling fuel is required.

Do you have CONSULT-III?

YES >> GO TO 2.

NO >> GO TO 3.

2.PERFORM COMPONENT FUNCTION CHECK

With CONSULT-III NOTE: Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 8 Imp gal) in advance. 1. Prepare a fuel container and a spare hose. 2. Release fuel pressure from fuel line, refer to EC-450, "Inspection". 3. Remove the fuel feed hose on the fuel level sensor unit.

(7-7/8 US gal, 6-5/

Revision: May 2007

EC-301

2007 Altima Hybrid

P0461 FUEL LEVEL SENSOR
< COMPONENT DIAGNOSIS >
4. Connect a spare fuel hose where the fuel feed hose was removed. 5. Turn ignition switch OFF and wait at least 10 seconds then turn ON (engine stopped). 6. Select "FUEL LEVEL SE" in "DATA MONITOR" mode with CONSULT-III. 7. Check "FUEL LEVEL SE" output voltage and note it. 8. Select "FUEL PUMP RELAY" in "ACTIVE TEST" mode with CONSULT-III. 9. Touch "ON" and drain fuel approximately 30 (7-7/8 US gal, 6-5/8 Imp gal) and stop it. 10. Check "FUEL LEVEL SE" output voltage and note it. 11. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal). 12. Check "FUEL LEVEL SE" output voltage and note it. 13. Confirm whether the voltage changes more than 0.03V during step 7 to 10 and 10 to 12.
Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-302, "Diagnosis Procedure".
3.PERFORM COMPONENT FUNCTION CHECK

[QR25DE]

Without CONSULT-III NOTE: Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8 Imp gal) in advance. 1. Prepare a fuel container and a spare hose. 2. Release fuel pressure from fuel line. Refer to EC-450, "Inspection". 3. Remove the fuel feed hose on the fuel level sensor unit. 4. Connect a spare fuel hose where the fuel feed hose was removed. 5. Turn ignition switch ON. 6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment. 7. Confirm that the fuel gauge indication varies. 8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal). 9. Confirm that the fuel gauge indication varies.
Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-302, "Diagnosis Procedure".

Diagnosis Procedure

INFOID:0000000001503032

1.CHECK COMBINATION METER FUNCTION

Refer to MWI-23, "Component Function Check".
Is the inspection result normal?
YES >> GO TO 2. NO >> Go to MWI-23, "Diagnosis Procedure"
2.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Revision: May 2007

EC-302

2007 Altima Hybrid

P0462, P0463 FUEL LEVEL SENSOR
< COMPONENT DIAGNOSIS >
P0462, P0463 FUEL LEVEL SENSOR
Description

[QR25DE]
A
INFOID:0000000001503033

The fuel level sensor is mounted in the fuel level sensor unit.

The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combina-

tion meter sends the fuel level sensor signal to the ECM through CAN communication line.

It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output volt-

age changes depending on the movement of the fuel mechanical float.

DTC Logic

INFOID:0000000001503034

D
DTC DETECTION LOGIC

NOTE:

· If DTC P0462 or P0463 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

This diagnosis indicates the former, to detect open or short circuit malfunction.

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P0462 P0463

Fuel level sensor circuit An excessively low voltage from the sensor is · Harness or connectors

low input

sent to ECM.

(The CAN communication line is open or

shorted)

· Harness or connectors

Fuel level sensor circuit An excessively high voltage from the sensor is (The sensor circuit is open or shorted)

high input

sent to ECM.

· Combination meter · Fuel level sensor

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is between 11V and 16V at

ignition switch ON.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 5 seconds.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-303, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503035

1.CHECK COMBINATION METER FUNCTION

Refer to MWI-23, "Component Function Check".

Is the inspection result normal?

YES >> GO TO 2. NO >> Go to MWI-23, "Diagnosis Procedure"
2.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

Revision: May 2007

EC-303

2007 Altima Hybrid

P0462, P0463 FUEL LEVEL SENSOR
< COMPONENT DIAGNOSIS >
>> INSPECTION END

[QR25DE]

Revision: May 2007

EC-304

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0500 VSS
Description

P0500 VSS

[QR25DE]
A
INFOID:0000000001503036

The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from hybrid EC vehicle control ECU, and the other is from brake ECU. The ECM uses these signals for engine control.

DTC Logic

INFOID:0000000001503037

DTC DETECTION LOGIC

NOTE:

If DTC P0500 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Harness or connectors

ECM detects a difference between two ve- (The CAN communication line is open or short-

P0500

Vehicle speed sensor hicle speed signals is out of the specified ed)

range.

· Hybrid vehicle control ECU · Brake ECU

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If this test

is conducted with the drive wheels lifted, activate "INPSECTION MODE 1" (HBC-103). If a road test is

expected to be easier, it is unnecessary to lift up the vehicle. J

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (READY). 2. Drive the vehicle at more than 40 km/h (25 MPH) for at least 2 minutes.
CAUTION: Always drive vehicle at a safe speed. 3. Check 1st trip DTC. Is 1st trip DTC detected? YES >> Go to EC-305, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK DTC WITH HYBRID VEHICLE CONTROL ECU
Refer to HBC-600, "DTC Index". Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace.
2.CHECK BARAKE ECU
Refer to BRC-156, "DTC Index".

K L M N
INFOID:0000000001503038
O P

>> INSPECTION END

Revision: May 2007

EC-305

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0506 ISC SYSTEM

P0506 ISC SYSTEM

[QR25DE]

Description

INFOID:0000000001503039

The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects the actual engine speed and sends a signal to the ECM. The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily. The optimum value stored in the ECM is determined by taking into consideration various engine conditions, such as during warming up and deceleration.

DTC Logic

INFOID:0000000001503040

DTC DETECTION LOGIC
NOTE: If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.

DTC No. P0506

Trouble diagnosis name

DTC detecting condition

Possible cause

Idle speed control system RPM lower than expected

The idle speed is less than the target idle speed by 100 rpm or more.

· Electric throttle control actuator · Intake air leak

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. If the target idle speed is out of the specified value, perform EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement", before conducting DTC Confirmation Procedure. TESTING CONDITION: · Before performing the following procedure, confirm that battery voltage is more than 11V at idle. · Always perform the test at a temperature above -10°C(14°F).

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Activate "INSPECTION MODE 1" (HBC-103.) to start engine, and warm up engine to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Activate "INSPECTION MODE 1" (HBC-103.) to start engine, and let engine idle for at least 1 minute. 6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-306, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503041

1.CHECK INTAKE AIR LEAK

1. Activate "INSPECTION MODE 1" (HBC-103) to start. 2. Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?

Revision: May 2007

EC-306

2007 Altima Hybrid

P0506 ISC SYSTEM
< COMPONENT DIAGNOSIS >
YES >> Discover air leak location and repair. NO >> GO TO 2.
2.REPLACE ECM

[QR25DE]
A

1. 2.

Replace ECM. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment".

>> INSPECTION END

Revision: May 2007

EC-307

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0507 ISC SYSTEM

P0507 ISC SYSTEM

[QR25DE]

Description

INFOID:0000000001503042

DTC Logic

INFOID:0000000001503043

DTC DETECTION LOGIC
NOTE: If DTC P0507 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.

DTC No. P0507

Trouble diagnosis name

DTC detecting condition

Idle speed control system RPM higher than expected

The idle speed is more than the target idle speed by 200 rpm or more.

Possible cause
· Electric throttle control actuator · Intake air leak · PCV system

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. If the target idle speed is out of the specified value, perform EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement", before conducting DTC Confirmation Procedure. TESTING CONDITION: · Before performing the following procedure, confirm that battery voltage is more than 11V at idle. · Always perform the test at a temperature above -10°C(14°F).

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure

INFOID:0000000001503044

1.CHECK PCV HOSE CONNECTION

Confirm that PCV hose is connected correctly. Is the inspection result normal?
YES >> GO TO 2.

Revision: May 2007

EC-308

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
NO >> Repair or replace.
2.CHECK INTAKE AIR LEAK

P0507 ISC SYSTEM

[QR25DE]
A

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine.

2. Listen for an intake air leak after the mass air flow sensor.

Is intake air leak detected?

YES >> Discover air leak location and repair.

NO >> GO TO 3.
3.REPLACE ECM

1. Replace ECM. 2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require- D
ment".

>> INSPECTION END

Revision: May 2007

EC-309

2007 Altima Hybrid

P0603 ECM POWER SUPPLY
< COMPONENT DIAGNOSIS >
P0603 ECM POWER SUPPLY
Description
Battery voltage is supplied to the ECM even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc.

[QR25DE]
INFOID:0000000001503045

DTC Logic
DTC DETECTION LOGIC

PBIA9222J INFOID:0000000001503046

DTC No. P0603

Trouble diagnosis name

DTC detecting condition

ECM power supply cir- ECM back-up RAM system does not function

cuit

properly.

Possible cause
· Harness or connectors [ECM power supply (back-up) circuit is open or shorted.]
· ECM

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 1 second. 2. Turn ignition switch ON (READY). 3. Depress the accelerator pedal to start engine, then keep engine running for at least 1 seconds. 4. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON. 5. Repeat steps 2 and 4 for four times. 6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-310, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503047

1.CHECK ECM POWER SUPPLY

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the voltage between ECM harness connector and ground.

Revision: May 2007

EC-310

2007 Altima Hybrid

P0603 ECM POWER SUPPLY
< COMPONENT DIAGNOSIS >

[QR25DE]

ECM

Ground

Voltage

Connector Terminal

F13

77 Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 3.

NO >> GO TO 2.

2.DETECT MALFUNCTIONING PART

Check the following.

· 15A fuse (No. 42)

· IPDM E/R harness connector F10

· Harness for open or short between ECM and battery

>> Repair or replace harness or connectors.
3.CHECK INTERMITTENT INCIDENT F Refer to GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> GO TO 4.

NO >> Repair or replace harness or connectors.

4.PERFORM DTC CONFIRMATION PROCEDURE

H With CONSULT-III

1. Turn ignition switch ON.

2. Select "SELF-DIAG RESULTS" mode with CONSULT-III.

3. Touch "ERASE".

4. Perform DTC CONFIRMATION PROCEDURE.

See EC-310, "DTC Logic".

With GST

1. Turn ignition switch ON.

2. Select Service $04 with GST.

3. Perform DTC CONFIRMATION PROCEDURE.

See EC-310, "DTC Logic".

Is the 1st trip DTC P0603 displayed again?

YES >> GO TO 5. NO >> INSPECTION END

5.REPLACE ECM

1. Replace ECM.

2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment".

N >> INSPECTION END

Revision: May 2007

EC-311

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P0605 ECM

P0605 ECM

Description

The ECM consists of a microcomputer and connectors for signal input and output and for power supply. The ECM controls the engine.

[QR25DE]
INFOID:0000000001503048

DTC Logic
DTC DETECTION LOGIC

PBIA9222J INFOID:0000000001503049

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

A) ECM calculation function is malfunctioning.

P0605

Engine control module B) ECM EEP-ROM system is malfunctioning.

· ECM

C) ECM self shut-off function is malfunctioning.

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Turn ignition switch ON. 2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-313, "Diagnosis Procedure". NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1. Turn ignition switch ON and wait at least 1 second. 2. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON. 3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-313, "Diagnosis Procedure". NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second. 2. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON. 3. Repeat step 2 for 32 times. 4. Check 1st trip DTC.
Is 1st trip DTC detected?

Revision: May 2007

EC-312

2007 Altima Hybrid

P0605 ECM
< COMPONENT DIAGNOSIS > YES >> Go to EC-313, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure

[QR25DE]
A
INFOID:0000000001503050

1.INSPECTION START

With CONSULT-III

1. Turn ignition switch ON. 2. Select "SELF-DIAG RESULTS" mode with CONSULT-III.

3. Touch "ERASE".

4. Perform DTC CONFIRMATION PROCEDURE.

See EC-312, "DTC Logic".

With GST

1. Turn ignition switch ON.

2. Select Service $04 with GST.

3. Perform DTC CONFIRMATION PROCEDURE.

See EC-312, "DTC Logic".

Is the 1st trip DTC P0605 displayed again?

YES >> GO TO 2.

NO >> INSPECTION END

2.REPLACE ECM

1. Replace ECM.

2. Go to EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment".

>> INSPECTION END I

Revision: May 2007

EC-313

2007 Altima Hybrid

P0643 SENSOR POWER SUPPLY
< COMPONENT DIAGNOSIS >
P0643 SENSOR POWER SUPPLY
DTC Logic
DTC DETECTION LOGIC

[QR25DE]
INFOID:0000000001503051

DTC No. P0643

Trouble diagnosis name
Sensor power supply circuit short

DTC detecting condition

Possible cause

ECM detects a voltage of power source for sensor is excessively low or high.

· Harness or connectors (TP sensor circuit is shorted.) [Camshaft position sensor (PHASE) circuit is shorted.]
· Throttle position sensor · Camshaft position sensor (PHASE)

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY). 2. Depress the accelerator pedal to start engine, then keep engine running for at least 1 second. 3. Check DTC.
Is DTC detected?
YES >> Go to EC-314, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503052

1.CHECK GROUND CONNECTION

Check harness for short to power and short to ground, between the following terminals.

ECM

Sensor

Connector

Terminal

Name

Connector Terminal

Electric throttle control actuator

F57

F13

CMP sensor (PHASE)

F55

Is the inspection result normal?
YES >> GO TO 3. NO >> Repair short to ground or short to power in harness or connectors.

Revision: May 2007

EC-314

2007 Altima Hybrid

P0643 SENSOR POWER SUPPLY
< COMPONENT DIAGNOSIS >
3.CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-255, "Component Inspection". Is the inspection result normal?
YES >> GO TO 4. NO >> Replace malfunctioning component.
4.CHECK TP SENSOR
Refer to EC-170, "Component Inspection". Is the inspection result normal?
YES >> GO TO 6. NO >> GO TO 5.
5.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. 2. Go to EC-315, "Special Repair Requirement".

[QR25DE]
A EC
C D E

>> INSPECTION END

6.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Special Repair Requirement

H
INFOID:0000000001503053

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING I Refer to EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.

2.PERFORM IDLE AIR VOLUME LEARNING

Refer to EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement" K

>> END L

Revision: May 2007

EC-315

2007 Altima Hybrid

P0AC4 HV MIL ON REQUEST
< COMPONENT DIAGNOSIS >
P0AC4 HV MIL ON REQUEST
Description
This DTC is displayed when a malfunction is detected by HV ECU. Check DTC for HV ECU and perform the trouble diagnosis. Refer to HBC-600, "DTC Index". After repair work, erase DTC in ECM.

[QR25DE]
INFOID:0000000001503054

Revision: May 2007

EC-316

2007 Altima Hybrid

P1148 CLOSED LOOP CONTROL
< COMPONENT DIAGNOSIS >
P1148 CLOSED LOOP CONTROL
DTC Logic

[QR25DE]
A
INFOID:0000000001503055

DTC DETECTION LOGIC

NOTE:

DTC P1148 is displayed with another DTC for A/F sensor 1.

Perform the trouble diagnosis for the corresponding DTC.

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P1148

Closed loop control function

· Harness or connectors

The closed loop control function for bank 1 does (The A/F sensor 1 circuit is open or short-

not operate even when vehicle is driving in the ed.)

specified condition.

· A/F sensor 1

· A/F sensor 1 heater

Revision: May 2007

EC-317

2007 Altima Hybrid

P1195 ENGINE DOES NOT START
< COMPONENT DIAGNOSIS >
P1195 ENGINE DOES NOT START
DTC Logic

[QR25DE]
INFOID:0000000001503056

DTC DETECTION LOGIC
NOTE: · If DTC P1195 is displayed with DTC P0201, P0202, P0203, P0204, first perform the trouble diagnosis
for DTC P0201, P0202, P0203, P0204. Refer to EC-235, "DTC Logic". · If DTC P1195 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer
to EC-249, "DTC Logic". · If DTC P1195 is displayed with DTC P0340, first perform the trouble diagnosis for DTC P0340. Refer
to EC-253, "DTC Logic". · If DTC P1195 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-312, "DTC Logic".

DTC No. P1195

Trouble diagnosis name

DTC detecting condition

Engine does not start

When the engine is abnormal, and the engine does not start.

Possible cause
· Intake air leaks · Incorrect PCV hose connection · Mass air flow sensor · Electric throttle control actuator · Fuel injector · Fuel run out · Incorrect fuel pressure · Spark plug · Ignition coil · Ignition signal circuit is open or shorted · Insufficient compression

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (READY). 2. Depress accelerator pedal and wait at least 15 seconds. 3. Check DTC. Is DTC detected?
YES >> Go to EC-318, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK FOR INTAKE AIR LEAK
1. Visually check for the cause of intake air leak after the mass air flow sensor. 2. Check PCV hose connection. Intake air leak detected?
YES >> Repair or replace. NO >> GO TO 2.
2.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.

INFOID:0000000001503057

Revision: May 2007

EC-318

2007 Altima Hybrid

P1195 ENGINE DOES NOT START
< COMPONENT DIAGNOSIS >
2. Check if foreign matter is caught between the throttle valve (1) and the housing.

2. Electric throttle control actuator
: Vehicle front
Is the inspection result normal? YES >> GO TO 3. NO >> Remove the foreign matter and clean the electric throttle control actuator inside.

3.CHECK FUEL PUMP FUNCTION
Refer to EC-376, "Component Function Check". Is the inspection result normal?
YES >> GO TO 4. NO >> Go to EC-376, "Diagnosis Procedure".
4.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-150, "Component Inspection". Is the inspection result normal?
YES >> GO TO 5. NO >> Replace mass air flow sensor.
5.CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Refer to EC-450, "Inspection". 2. Install fuel pressure gauge and check fuel pressure. Refer to EC-450, "Inspection". Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging. Is the inspection result normal?
YES >> Replace "fuel filter and fuel pump assembly". NO >> Repair or replace
7.CHECK FUEL INJECTOR
Check fuel injector. Refer to EC-236, "Component Inspection". Is the inspection result normal?
YES >> GO TO 8. NO >> Replace malfunctioning fuel injector.
8.CHECK SPARK PLUG
Check spark plug. Refer to EM-13, "Removal and Installation". Is the inspection result normal?
YES >> GO TO 9. NO >> Clean or replace spark plug.
9.CHECK IGNITION COIL AND CIRCUIT
Check ignition coil and circuit. Refer to EC-380, "Component Function Check". Is the inspection result normal?
YES >> GO TO 10. NO >> Go to EC-380, "Diagnosis Procedure".
10.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-21, "Compression pressure".

Revision: May 2007

EC-319

[QR25DE]
A EC
C
ALBIA0150ZZ
D E F G H I J K L M N O P
2007 Altima Hybrid

P1195 ENGINE DOES NOT START
< COMPONENT DIAGNOSIS > Is the inspection result normal?
YES >> GO TO 11. NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
11.CHECK SYMPTOM TABLE
Check items on the no start symptom in EC-439, "Symptom Table". Is the inspection result normal?
YES >> GO TO 12. NO >> Repair or replace.
12.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END

[QR25DE]

Revision: May 2007

EC-320

2007 Altima Hybrid

P1196 POOR ENGINE POWER
< COMPONENT DIAGNOSIS >
P1196 POOR ENGINE POWER
DTC Logic

[QR25DE]
A
INFOID:0000000001503058

DTC DETECTION LOGIC

NOTE:

· If DTC P1196 is displayed with DTC P0201, P0202, P0203, P0204, first perform the trouble diagnosis

for DTC P0201, P0202, P0203, P0204. Refer to EC-235, "DTC Logic".

· If DTC P1196 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer

to EC-249, "DTC Logic".

· If DTC P1196 is displayed with DTC P0340, first perform the trouble diagnosis for DTC P0340. Refer

to EC-253, "DTC Logic".

· If DTC P1196 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer

to EC-312, "DTC Logic".

ECM calculates the target torque based on the engine power request signal and the engine speed request sig- E nal sent from HV ECU.

HV ECU calculates the estimated torque based on the generator torque.

ECM compares the calculated target torque with the estimated torque sent from HV ECU. F

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Intake air leaks

· Incorrect PCV hose connection

· Mass air flow sensor

· Electric throttle control actuator

P1196

Poor engine power

The estimated torque is excessively low compared with the target torque

· Fuel injector · Fuel run out · Incorrect fuel pressure

· Spark plug

· Ignition coil

· Ignition signal circuit is open or shorted

· Insufficient compression

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- K

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds.

Do you have CONSULT-III?

YES >> GO TO 2. NO >> GO TO 3.

2.PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10seconds.

5. Turn ignition switch ON (READY). 6. Select "POOR ENG PWR P1196" of "ENGINE PERFORMANCE" in "DTC WORK SUPPORT" mode with P

CONSULT-III.

7. Touch "START".

8. Drive vehicle at a speed of 60 km/h (37 MPH) or more until "TESTING" on CONSULT-III changes to

"COMPLETED". (It will take approximately 10 seconds.)

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

Revision: May 2007

EC-321

2007 Altima Hybrid

P1196 POOR ENGINE POWER
< COMPONENT DIAGNOSIS >
Keep the vehicle speed as steady as possible during the cruising. 9. Touch "SELF-DIAG RESULT".
Which is displayed on CONSULT-III?
OK >> INSPECTION END NG >> Go to EC-322, "Diagnosis Procedure".
3.PERFORM DTC CONFIRMATION PROCEDURE

[QR25DE]

With GST 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating
temperature. 2. Turn ignition switch OFF and wait at least 10seconds. 3. Turn ignition switch ON. 4. Turn ignition switch OFF and wait at least 10seconds. 5. Turn ignition switch ON (READY). 6. Drive vehicle at a speed of 60 km/h (37 MPH) or more for at least 10 seconds.
CAUTION: Always drive vehicle at a safe speed. NOTE: Keep the vehicle speed as steady as possible during the cruising. 7. Check DTC.
Is DTC detected?
YES >> Go to EC-322, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503059

1.CHECK FOR INTAKE AIR LEAK

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle. 2. Listen for an intake air leak after the mass air flow sensor. 3. Check PCV hose connection.
Intake air leak detected?
YES >> Repair or replace. NO >> GO TO 2.
2.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF. 2. Remove the intake air duct. 3. Check if foreign matter is caught between the throttle valve (1)
and the housing.

2. Electric throttle control actuator
: Vehicle front
Is the inspection result normal? YES >> GO TO 3. NO >> Remove the foreign matter and clean the electric throttle control actuator inside.

Revision: May 2007

EC-322

ALBIA0150ZZ
2007 Altima Hybrid

P1196 POOR ENGINE POWER
< COMPONENT DIAGNOSIS >
YES >> GO TO 5. NO >> Replace mass air flow sensor.
5.CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Refer to EC-450, "Inspection". 2. Install fuel pressure gauge and check fuel pressure. Refer to EC-450, "Inspection". Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging. Is the inspection result normal?
YES >> Replace "fuel filter and fuel pump assembly". NO >> Repair or replace
7.CHECK FUEL INJECTOR
Check fuel injector. Refer to EC-236, "Component Inspection". Is the inspection result normal?
YES >> GO TO 8. NO >> Replace malfunctioning fuel injector.
8.CHECK SPARK PLUG
Check spark plug. Refer to EM-13, "Removal and Installation". Is the inspection result normal?
YES >> GO TO 9. NO >> Clean or replace spark plug.
9.CHECK IGNITION COIL AND CIRCUIT
Check ignition coil and circuit. Refer to EC-380, "Component Function Check". Is the inspection result normal?
YES >> GO TO 10. NO >> Go to EC-380, "Diagnosis Procedure".
10.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-21, "Compression pressure". Is the inspection result normal?
YES >> GO TO 11. NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
11.CHECK SYMPTOM TABLE
Check items on the lack of power symptom in EC-439, "Symptom Table". Is the inspection result normal?
YES >> GO TO 12. NO >> Repair or replace.
12.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-323

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P1197 FUEL RUN OUT
DTC Logic

P1197 FUEL RUN OUT

[QR25DE]
INFOID:0000000001503060

DTC DETECTION LOGIC
NOTE: This DTC may be detected if the vehicle continues turning counterclockwise over a certain speed for a length of time.

DTC No. P1197

Trouble diagnosis name

DTC detecting condition

Fuel run out

Detecting condition for P1196 or P1197 is satisfied and low voltage from the fuel level sensor is sent to ECM

· Out of fuel

DTC CONFIRMATION PROCEDURE
1.REFILL FUEL
Refill the fuel until low fuel warning light turned OFF.

Possible cause

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1195
Perform DTC CONFIRMATION PROCEDURE for DTC P1195. Refer to EC-318, "DTC Logic". Is the inspection result normal?
YES >> GO TO 3. NO >> Go to EC-318, "Diagnosis Procedure".
3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1196
Perform DTC CONFIRMATION PROCEDURE for DTC P1196. Refer to EC-321, "DTC Logic". Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-322, "Diagnosis Procedure".

Revision: May 2007

EC-324

2007 Altima Hybrid

P1217 ENGINE OVER TEMPERATURE
< COMPONENT DIAGNOSIS >
P1217 ENGINE OVER TEMPERATURE
DTC Logic

[QR25DE]
A
INFOID:0000000001503061

DTC DETECTION LOGIC

NOTE:

· If DTC P1217 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will C rise.

When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is

indicated. D

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P1217

· Harness or connectors

(The cooling fan circuit is open or short-

Engine over temperature (Overheat)

· Cooling fan does not operate properly (Overheat).
· Cooling fan system does not operate properly (Overheat).
· Engine coolant was not added to the system using the proper filling method.
· Engine coolant is not within the specified range.

ed.) · IPDM E/R · Cooling fan relays-1 · Cooling fan motors · Radiator hose · Radiator · Radiator cap · Reservoir tank · Water pump

F G

· Thermostat

· Water control valve

CAUTION:

When a malfunction is indicated, be sure to replace the coolant. Refer to MA-12, "ENGINE COOLANT :

Changing Engine Coolant". Also, replace the engine oil. Refer to MA-17, "ENGINE OIL : Changing I

Engine Oil".

1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to

use coolant with the proper mixture ratio. Refer to MA-10, "Fluids and Lubricants".

2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.

DTC CONFIRMATION PROCEDURE

1.PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to EC-325, "Component Function Check".

NOTE: Use component function check to check the overall function of the cooling fan. During this check, a DTC might

not be confirmed.

Is the inspection result normal?

YES >> INSPECTION END

NO >> Go to EC-326, "Diagnosis Procedure".

Component Function Check

INFOID:0000000001503062

1.PERFORM COMPONENT FUNCTION CHECK-I

WARNING:

Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-

sure fluid escaping from the radiator.

Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up P pressure to escape. Then turn the cap all the way off.

Revision: May 2007

EC-325

2007 Altima Hybrid

P1217 ENGINE OVER TEMPERATURE
< COMPONENT DIAGNOSIS >
Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level.
Is the coolant level in the reservoir tank and/or radiator below the proper range?
YES >> Go to EC-326, "Diagnosis Procedure". NO >> GO TO 2.

[QR25DE]

2.PERFORM COMPONENT FUNCTION CHECK-II

SEF621W

Confirm whether customer filled the coolant or not.
Did customer fill the coolant?
YES >> Go to EC-326, "Diagnosis Procedure". NO >> GO TO 3.
3.PERFORM COMPONENT FUNCTION CHECK-III

Diagnosis Procedure

INFOID:0000000001503063

1.CHECK COOLING FAN OPERATION

With CONSULT-III 1. Turn ignition switch ON. 2. Perform "FAN DUTY CONTROL" in "ACTIVE TEST" mode with CONSULT-III. 3. Make sure that cooling fan speed varies according to the percent.
Without CONSULT-III 1. Perform IPDM E/R auto active test and check cooling fan motors operation, refer to PCS-10, "Diagnosis
Description". 2. Make sure that cooling fan operates.
Is the inspection result normal?
YES >> GO TO 2. NO >> Go to EC-372, "Diagnosis Procedure".
2.CHECK COOLING SYSTEM FOR LEAK-I
Check cooling system for leak. Refer to CO-10, "System Inspection".
Is leakage detected?
YES >> GO TO 3. NO >> GO TO 4.
3.CHECK COOLING SYSTEM FOR LEAK-II
Check the following for leak. Refer to CO-10, "System Inspection". · Hose · Radiator · Water pump

Revision: May 2007

EC-326

2007 Altima Hybrid

P1217 ENGINE OVER TEMPERATURE
< COMPONENT DIAGNOSIS >
>> Repair or replace malfunctioning part.
4.CHECK RADIATOR CAP
Check radiator cap. Refer to CO-14, "Removal and Installation". Is the inspection result normal?
YES >> GO TO 5. NO >> Replace radiator cap.
5.CHECK THERMOSTAT
Check thermostat. Refer to CO-20, "Removal and Installation". Is the inspection result normal?
YES >> GO TO 6. NO >> Replace thermostat.
6.CHECK WATER CONTROL VALVE
Check water control valve. Refer to CO-22, "Removal and Installation". Is the inspection result normal?
YES >> GO TO 7. NO >> Replace water control valve
7.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-166, "Component Inspection". Is the inspection result normal?
YES >> GO TO 8. NO >> Replace engine coolant temperature sensor.
8.CHECK MAIN 13 CAUSES
If the cause cannot be isolated, check the following.

[QR25DE]
A EC
C D E F G H I

Engine OFF
ON*2 ON*2 ON*1 OFF ON*3 OFF*4

Step 1
2

Inspection item
· Blocked radiator · Blocked condenser · Blocked radiator grille · Blocked bumper
· Coolant mixture

Equipment · Visual
· Coolant tester

Standard No blocking

Reference page

K
50 - 50% coolant mixture MA-10, "Fluids and Lubricants"

· Coolant level

· Visual

Coolant up to MAX level in MA-12, "ENGINE COOL- L
reservoir tank and radiator ANT : Changing Engine

filler neck

Coolant"

· Radiator cap

· Pressure tester

59 - 98 kPa (0.6 - 1.0 kg/cm2, 9 - 14

CO-14, "Removal and Installation"

psi) (Limit)

· Coolant leaks

· Visual

No leaks

CO-10, "System Inspec-

tion"

· Thermostat

· Cooling fan motor

· Touch the upper and Both hoses should be hot CO-20, "Removal and In-

lower radiator hoses

stallation"

· CONSULT-III

Operating

EC-372, "Component

Function Check"

· Combustion gas leak · Color checker chemical Negative

tester 4 Gas analyzer

--
P

· Coolant temperature · Visual

gauge

Gauge less than 3/4 when

driving

· Coolant overflow to res- · Visual ervoir tank

No overflow during driving CO-10, "System Inspec-

and idling

tion"

10 · Coolant return from res- · Visual ervoir tank to radiator

Should be initial level in reservoir tank

CO-10, "System Inspection"

Revision: May 2007

EC-327

2007 Altima Hybrid

P1217 ENGINE OVER TEMPERATURE
< COMPONENT DIAGNOSIS >

[QR25DE]

Engine Step

Inspection item

Equipment

OFF

11 · Water control valve

· Remove and inspect the valve

OFF

12 · Cylinder head

· Straight gauge feeler gauge

13 · Cylinder block and pis- · Visual tons

*1: Turn the ignition switch ON. *2: Engine running at 2,500 rpm for 10 minutes. *3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes. *4: After 60 minutes of cool down time. For more information, refer to CO-8, "Troubleshooting Chart".

Standard

Reference page

Within the specified value

CO-22, "Removal and Installation"

0.1 mm (0.004 in) Maxi- EM-61, "On-Vehicle Sermum distortion (warping) vice"

No scuffing on cylinder walls or piston

EM-81, "Inspection After Disassembly"

>> INSPECTION END

Revision: May 2007

EC-328

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P1225 TP SENSOR

P1225 TP SENSOR

Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC Logic

DTC DETECTION LOGIC

[QR25DE]
A
INFOID:0000000001503064
EC

PBIB0145E

INFOID:0000000001503065

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P1225

Closed throttle position Closed throttle position learning value is exces- · Electric throttle control actuator

learning performance sively low.

(TP sensor 1 and 2)

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE L 1. Turn ignition switch ON.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-329, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503066

1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.

2. Remove the intake air duct.

Revision: May 2007

EC-329

2007 Altima Hybrid

P1225 TP SENSOR
< COMPONENT DIAGNOSIS > 3. Check if foreign matter is caught between the throttle valve (1)
and the housing.
2. Electric throttle control actuator : Vehicle front
Is the inspection result normal? YES >> GO TO 2. NO >> Remove the foreign matter and clean the electric throttle control actuator inside.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. 2. Go to EC-330, "Special Repair Requirement".
>> INSPECTION END
Special Repair Requirement
1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-330, "Special Repair Requirement"
>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-330, "Special Repair Requirement"
>> END

[QR25DE]
ALBIA0150ZZ INFOID:0000000001503067

Revision: May 2007

EC-330

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P1226 TP SENSOR

P1226 TP SENSOR

Description

DTC Logic

DTC DETECTION LOGIC

[QR25DE]
A
INFOID:0000000001503068
EC

PBIB0145E

INFOID:0000000001503069

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P1226

Closed throttle position Closed throttle position learning is not perlearning performance formed successfully, repeatedly.

· Electric throttle control actuator (TP sensor 1 and 2)

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- I ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE L

1. Turn ignition switch ON.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Repeat steps 2 and 3 for 32 times.

5. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-331, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503070

1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.

2. Remove the intake air duct.

Revision: May 2007

EC-331

2007 Altima Hybrid

P1226 TP SENSOR
< COMPONENT DIAGNOSIS > 3. Check if foreign matter is caught between the throttle valve (1)
and the housing.
2. Electric throttle control actuator : Vehicle front
Is the inspection result normal? YES >> GO TO 2. NO >> Remove the foreign matter and clean the electric throttle control actuator inside.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. 2. Go to EC-330, "Special Repair Requirement".
>> INSPECTION END
Special Repair Requirement
1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-332, "Special Repair Requirement"
>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-332, "Special Repair Requirement"
>> END

[QR25DE]
ALBIA0150ZZ INFOID:0000000001503071

Revision: May 2007

EC-332

2007 Altima Hybrid

P1564 ASCD STEERING SWITCH
< COMPONENT DIAGNOSIS >
P1564 ASCD STEERING SWITCH
Description

[QR25DE]
A
INFOID:0000000001503072

ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation EC of switch, and determines which button is operated. Refer to EC-45, "System Description" for the ASCD function.

DTC Logic

INFOID:0000000001503073

DTC DETECTION LOGIC

NOTE:

If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to

EC-312, "DTC Logic".

DTC No.

Trouble diagnosis name

DTC detecting condition

E
Possible cause

· An excessively high voltage signal from the

P1564

ASCD steering switch

ASCD steering switch is sent to ECM. · ECM detects that input signal from the
ASCD steering switch is out of the specified range. · ECM detects that the ASCD steering switch

· Harness or connectors (The switch circuit is open or shorted.)
· ASCD steering switch · ECM

F G

is stuck ON.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 10 seconds.

2. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds. 3. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.

4. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-

onds.

5. Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.

6. Check DTC.

Is DTC detected?

YES >> Go to EC-333, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure
1.CHECK GROUND CONNECTION

INFOID:0000000001503074
O

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YS >> GO TO 2. NO >> Repair or replace ground connection.
2.CHECK ASCD STEERING SWITCH CIRCUIT

With CONSULT-III

Revision: May 2007

EC-333

2007 Altima Hybrid

P1564 ASCD STEERING SWITCH

< COMPONENT DIAGNOSIS >

[QR25DE]

1. Turn ignition switch ON. 2. Select "MAIN SW", "CANCEL SW", "RESUME/ACC SW" and "SET SW" in "DATA MONITOR" mode with
CONSULT-III. 3. Check each item indication under the following conditions.

Monitor item

Condition

Indication

MAIN SW

MAIN switch

Pressed Released

ON OFF

CANCEL SW

CANCEL switch

Pressed Released

ON OFF

Pressed RESUME/ACC SW RESUME/ACCELERATE switch
Released

ON OFF

SET SW

SET/COAST switch

Pressed Released

ON OFF

Without CONSULT-III 1. Turn ignition switch ON. 2. Check the voltage between ECM harness connector and ground.

Connector

ECM Terminal

Ground

Condition

MAIN switch: Pressed

CANSEL switch: Pressed

E10

110 (ASCD steering switch signal)

Ground SET/COAST switch: Pressed

RESUME/ACCELERATE switch: Pressed

All ASCD steering switches: Released

Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 3.
3.CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Disconnect combination switch harness connector M88. 4. Check the continuity between combination switch and ECM harness connector.

Voltage
Approx. 0V Approx. 1V Approx. 2V Approx. 3V Approx. 4V

Combination switch

ECM

Continuity

Terminal

Connector Terminal

E10

Existed

5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> GO TO 4.
4.DETECT MALFUNCTIONING PART

Check the following. · Harness connectors M1, E30 · Combination switch (spiral cable) · Harness for open and short between ECM and combination switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

Revision: May 2007

EC-334

2007 Altima Hybrid

P1564 ASCD STEERING SWITCH
< COMPONENT DIAGNOSIS >
5.CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between ECM harness connector and combination switch.

[QR25DE]
A

Combination switch

ECM

Continuity

Terminal

Connector Terminal

E10

Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 6.

6.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors M1, E30

· Combination switch (spiral cable)

· Harness for open and short between ECM and combination switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

7.CHECK ASCD STEERING SWITCH

Refer to EC-335, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 8.

NO >> Replace ASCD steering switch.

8.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Component Inspection
1.CHECK ASCD STEERING SWITCH

INFOID:0000000001503075
K

1. Disconnect combination switch (spiral cable) harness connector M88. 2. Check the continuity between combination switch harness connector terminals under following conditions. L

Combination meter

Connector Terminals

Condition

Resistance

MAIN switch: Pressed

Approx. 0

CANCEL switch: Pressed

Approx. 250

M88 13 and 16 SET/COAST switch: Pressed

Approx. 660

RESUME/ACCELERATE switch: Pressed Approx. 1,480

All ASCD steering switches: Released

Approx. 4,000

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace ASCD steering switch

Revision: May 2007

EC-335

2007 Altima Hybrid

P1572 ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS >
P1572 ASCD BRAKE SWITCH

[QR25DE]

Description

INFOID:0000000001503076

When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. ECM and hybrid vehicle control ECU detects the state of the brake pedal by this input of two kinds (ON/OFF signal). Refer to EC-45, "System Description" for the ASCD function.

DTC Logic

INFOID:0000000001503077

DTC DETECTION LOGIC
NOTE: · If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-312, "DTC Logic". · This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not
stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed. 1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1572

A) ASCD brake switch
B)

When the vehicle speed is above 30 km/h (19 MPH), ON signals from the stop lamp switch and the ASCD brake switch are sent to the ECM at the same time.
ASCD brake switch signal is not sent to ECM for extremely long time while the vehicle is driving.

· Harness or connectors (The stop lamp switch circuit is shorted.)
· Harness or connectors (The ASCD brake switch circuit is shorted.)
· Harness or connectors · Stop lamp switch · ASCD brake switch · Incorrect stop lamp switch installation · Incorrect ASCD brake switch installation · ECM

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If this test is conducted with the drive wheels lifted, activate "INPSECTION MODE 1" (HBC-103). If a road test is expected to be easier, it is unnecessary to lift up the vehicle. NOTE: Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be detected.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Turn ignition switch ON (READY). 2. Press MAIN switch and make sure that CRUISE indicator is displayed in combination meter. 3. Drive the vehicle for at least 5 consecutive seconds under the following conditions.
CAUTION: Always drive vehicle at a safe speed. NOTE: This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

Revision: May 2007

EC-336

2007 Altima Hybrid

P1572 ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS >

[QR25DE]

VHCL SPEED SE

More than 30 km/h (19 mph)

Shift lever

Suitable position

4. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-337, "Diagnosis Procedure".

NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B

1. Turn ignition ON (READY) and drive the vehicle for at least 5 consecutive seconds under the following

conditions.

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.

If a road test is expected to be easier, it is unnecessary to lift the vehicle.

VHCL SPEED SE

More than 30 km/h (19 mph)

Selector lever

Suitable position

Driving location

Depress the brake pedal for more than five seconds so as not to come off from the above-mentioned vehicle speed.

2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-337, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

1.CHECK OVERALL FUNCTION-I

With CONSULT-III 1. Turn ignition switch ON. 2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT-III. 3. Check "BRAKE SW1" indication under the following conditions.

F G H
I
INFOID:0000000001503078
J
K

Monitor item

Condition

Indication

Slightly depressed OFF

BRAKE SW1 Brake pedal

Fully released

Without CONSULT-III

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector and ground.

Connector

ECM Terminal

Ground

Condition

Voltage

E10

110 (ASCD brake switch signal)

Ground

Brake pedal

Slightly depressed Fully released

Approx. 0V Battery voltage

Is the inspection result normal? YES >> GO TO 2. NO >> GO TO 3.
2.CHECK OVERALL FUNCTION-II
With CONSULT-III
Revision: May 2007

EC-337

O P
2007 Altima Hybrid

P1572 ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS > Select "BRAKE SW2" and check indication in "DATA MONITOR" mode.

[QR25DE]

Monitor item

Condition

Indication

Slightly depressed BRAKE SW2 Brake pedal
Fully released

ON OFF

Without CONSULT-III Check the voltage between ECM harness connector and ground.

Connector E10

ECM Terminal
106 (Stop lamp switch signal)

Ground

Condition

Voltage

Slightly depressed Battery voltage

Ground Brake pedal

Fully released

Approx. 0V

Is the inspection result normal?
YES >> GO TO 13. NO >> GO TO 8.
3.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF. 2. Disconnect ASCD brake switch harness connector. 3. Turn ignition switch ON. 4. Check the voltage between ASCD brake switch harness connector and ground.

ASCD brake switch Ground
Connector Terminal

Voltage

E37

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 5. NO >> GO TO 4.
4.DETECT MALFUNCTIONING PART

Check the following. · Fuse block (J/B) connector E6 · Junction block connector E46, E48 · 10A fuse (No.3) · Harness for open or short between ASCD brake switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. 2. Disconnect ECM ASCD harness connector. 3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.

ASCD brake switch

ECM

Continuity

Connector Terminal Connector Terminal

E37

E10

110

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 6.
6.DETECT MALFUNCTIONING PART

Revision: May 2007

EC-338

2007 Altima Hybrid

P1572 ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS >
Check the following. · Junction block connector E45, E46 · Harness for open or short between ASCD brake switch and ECM

[QR25DE]
A

>> Repair open circuit or short to ground or short to power in harness or connectors.

7.CHECK ASCD BRAKE SWITCH

Refer to EC-340, "Component Inspection (ASCD Brake Switch)".

Is the inspection result normal?

YES >> GO TO 13.

NO >> Replace ASCD brake switch.
8.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect stop lamp switch harness connector.

3. Check the voltage between stop lamp switch harness connector and ground.

Stop lamp switch

Ground

Voltage

Connector Terminal

E38

Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 10.

NO >> GO TO 9.

9.DETECT MALFUNCTIONING PART

Check the following.

· Fuse block (J/B) connector E6

· 10A fuse (No.7)

· Harness for open or short between stop lamp switch and battery

>> Repair open circuit or short to ground or short to power in harness or connectors.
10.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT K 1. Disconnect ECM harness connector. 2. Check the continuity between ECM harness connector and stop lamp switch harness connector.

ECM

ASCD clutch switch

Continuity

Connector Terminal Connector Terminal

E10

106

E38

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 12.

NO >> GO TO 11.

11.DETECT MALFUNCTIONING PART

Check the following.

· Fuse block (J/B) connector E6

· Harness for open or short between ECM and stop lamp switch

>> Repair open circuit or short to ground or short to power in harness or connectors.
12.CHECK STOP LAMP SWITCH

Refer to EC-340, "Component Inspection (Stop Lamp Switch)". Is the inspection result normal?
YES >> GO TO 13.

Revision: May 2007

EC-339

2007 Altima Hybrid

P1572 ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS > NO >> Replace stop lamp switch.
13.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

[QR25DE]

>> INSPECTION END

Component Inspection (ASCD Brake Switch)

INFOID:0000000001503079

1.CHECK ASCD BRAKE SWITCH-I

1. Turn ignition switch OFF. 2. Disconnect ASCD brake switch harness connector. 3. Check the continuity between ASCD brake switch terminals under the following conditions.

Terminals

Condition

Continuity

1 and 2

Fully released

Existed

Brake pedal

Slightly depressed Not existed

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.CHECK ASCD BRAKE SWITCH-II

1. Adjust ASCD brake switch installation. Refer to BR-11, "Inspection and Adjustment". 2. Check the continuity between ASCD brake switch terminals under the following conditions.

Terminals

Condition

Continuity

1 and 2

Fully released

Existed

Brake pedal

Slightly depressed Not existed

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace ASCD brake switch.

Component Inspection (Stop Lamp Switch)

1.CHECK STOP LAMP SWITCH-I
1. Turn ignition switch OFF. 2. Disconnect stop lamp switch harness connector. 3. Check the continuity between stop lamp switch terminals under the following conditions.

INFOID:0000000001503080

Terminals

Condition

Continuity

Fully released

Not existed

1 and 2 Brake pedal

Slightly depressed Existed

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-II

1. Adjust stop lamp switch installation. Refer to BR-11, "Inspection and Adjustment". 2. Check the continuity between stop lamp switch terminals under the following conditions.

Terminals

Condition

Continuity

Fully released

Not existed

1 and 2 Brake pedal

Slightly depressed Existed

Revision: May 2007

EC-340

2007 Altima Hybrid

P1572 ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS >
Is the inspection result normal? YES >> INSPECTION END NO >> Replace stop lamp switch.

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-341

2007 Altima Hybrid

P1574 ASCD VEHICLE SPEED SENSOR
< COMPONENT DIAGNOSIS >
P1574 ASCD VEHICLE SPEED SENSOR

[QR25DE]

Description

INFOID:0000000001503081

The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from hybrid vehicle ECU, and the other is from brake ECU. The ECM uses these signals for ASCD control. Refer to EC45, "System Description" for ASCD functions.

DTC Logic

INFOID:0000000001503082

DTC DETECTION LOGIC
NOTE: · If DTC P1574 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. · If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer
to EC-305, "DTC Logic" · If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-312, "DTC Logic"

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1574

ASCD vehicle speed sensor

ECM detects a difference between two vehicle speed signals is out of the specified range.

· Harness or connectors (The CAN communication line is open or shorted.)
· Hybrid vehicle control ECU · Brake ECU

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (READY). 2. Drive the vehicle at more than 40 km/h (25 MPH).
CAUTION: Always drive vehicle at a safe speed. 3. Check DTC. Is DTC detected? YES >> Go to EC-342, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK DTC WITH HYBRID VEHICLE CONTROL ECU
Refer to HBC-600, "DTC Index". Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace.

INFOID:0000000001503083

Revision: May 2007

EC-342

2007 Altima Hybrid

P1574 ASCD VEHICLE SPEED SENSOR
< COMPONENT DIAGNOSIS >
2.CHECK BARAKE ECU
Refer to BRC-156, "DTC Index".
>> INSPECTION END

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-343

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P1805 BRAKE SWITCH

P1805 BRAKE SWITCH

[QR25DE]

Description

INFOID:0000000001503084

Brake switch signal is applied to the ECM and hybrid vehicle control ECU through the stop lamp switch when the brake pedal is depressed. This signal is used mainly to decrease the engine speed when the vehicle is driving.

DTC Logic

INFOID:0000000001503085

DTC DETECTION LOGIC

DTC No. P1805

Trouble diagnosis name

DTC detecting condition

Possible cause

Brake switch

A brake switch signal is not sent to ECM for extremely long time while the vehicle is driving.

· Harness or connectors (Stop lamp switch circuit is open or shorted.)
· Stop lamp switch

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON. 2. Fully depress the brake pedal for at least 5 seconds. 3. Erase the DTC with CONSULT-III. 4. Check 1st trip DTC. Is 1st trip DTC detected?
YES >> Go to EC-344, "Diagnosis Procedure". NO >> INSPECTION END
Diagnosis Procedure
1.CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF. 2. Check the stop lamp when depressing and releasing the brake pedal.

INFOID:0000000001503086

Brake pedal

Stop lamp

Fully released Not illuminated

Slightly depressed Illuminated

Is 1st trip DTC detected?
YES >> GO TO 4. NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF. 2. Disconnect stop lamp switch harness connector. 3. Check the voltage between stop lamp switch harness connector and ground.

Stop lamp switch Ground
Connector Terminal

Voltage

E38

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART

Check the following.

Revision: May 2007

EC-344

2007 Altima Hybrid

P1805 BRAKE SWITCH
< COMPONENT DIAGNOSIS >
· Fuse block (J/B) connector E6 · 10A fuse (No. 7) · Harness for open or short between stop lamp switch and battery

[QR25DE]
A

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector. 2. Check the continuity between ECM harness connector and stop lamp switch harness connector.

ECM

Stop lamp switch Continuity

Connector Terminal Connector Terminal

E10

106

E38

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 6.

NG >> GO TO 5.

5.DETECT MALFUNCTIONING PART

Check the following.

· Fuse block (J/B) connector E6

· Harness for open or short between ECM and stop lamp switch

H >> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK STOP LAMP SWITCH

Refer to EC-345, "Component Inspection (Stop Lamp Switch)".

Is the inspection result normal?

YES >> GO TO 7. NO >> Replace stop lamp switch.

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END
Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH-I
1. Turn ignition switch OFF. 2. Disconnect stop lamp switch harness connector. 3. Check the continuity between stop lamp switch terminals under the following conditions.

L
INFOID:0000000001503087
M
N

Terminals

Condition

Continuity

Fully released

Not existed

1 and 2 Brake pedal

Slightly depressed Existed

Is the inspection result normal?

YES >> INSPECTION END

NO >> GO TO 2.

2.CHECK STOP LAMP SWITCH-II

1. Adjust stop lamp switch installation. Refer to BR-11, "Inspection and Adjustment". 2. Check the continuity between stop lamp switch terminals under the following conditions.

Revision: May 2007

EC-345

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

P1805 BRAKE SWITCH

Terminals

Condition

Continuity

Fully released

Not existed

1 and 2 Brake pedal

Slightly depressed Existed

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace stop lamp switch.

[QR25DE]

Revision: May 2007

EC-346

2007 Altima Hybrid

P2100, P2103 THROTTLE CONTROL MOTOR RELAY
< COMPONENT DIAGNOSIS >
P2100, P2103 THROTTLE CONTROL MOTOR RELAY
Description

[QR25DE]
A
INFOID:0000000001503088

Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle EC control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends

an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition

switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not

provided to the ECM.

DTC Logic

INFOID:0000000001503089

D
DTC DETECTION LOGIC

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

· Harness or connectors

P2100

Throttle control motor relay circuit open

ECM detects a voltage of power source for throttle control motor is excessively low.

(Throttle control motor relay circuit is open) · Throttle control motor relay

· Harness or connectors

P2103

Throttle control motor relay circuit short

ECM detect the throttle control motor relay is stuck ON.

(Throttle control motor relay circuit is shorted)

· Throttle control motor relay

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8V.

Witch DTC is detected?

P2100 >> GO TO 2.

P2103 >> GO TO 3.

2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2100

1. Turn ignition switch ON and wait at least 2 seconds.

2. Turn ignition switch ON (READY).

3. Depress the accelerator pedal to start engine, then keep engine running for at least 5 seconds.

4. Check DTC.

Is DTC detected?

YES >> Go to EC-347, "Diagnosis Procedure".

NO >> INSPECTION END

3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2103

1. Turn ignition switch ON and wait at least 1 second.

2. Check DTC.

Is DTC detected?

YES >> Go to EC-347, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503090

1.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

Revision: May 2007

EC-347

2007 Altima Hybrid

P2100, P2103 THROTTLE CONTROL MOTOR RELAY
< COMPONENT DIAGNOSIS >
2. Disconnect ECM harness connector. 3. Disconnect IPDM E/R harness connector F10. 4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

[QR25DE]

ECM

IPDM E/R

Continuity

Connector Terminal Connector Terminal

F14

F10

Existed

5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 2. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
2.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT

1. Check the continuity between ECM harness connector and IPDM E/R harness connector.

ECM

IPDM E/R

Continuity

Connector Terminal Connector Terminal

F14

F10

Existed

2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK FUSE

1. Disconnect 15A fuse (No. 43) from IPDM E/R. 2. Check 15A fuse for blown.
Is the inspection result normal?
YES >> GO TO 4. NO >> Replace 15A fuse.
4.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R. NO >> Repair or replace harness or connectors.

Revision: May 2007

EC-348

2007 Altima Hybrid

P2101 ELECTRIC THROTTLE CONTROL FUNCTION
< COMPONENT DIAGNOSIS >
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
Description

[QR25DE]
A
INFOID:0000000001503091

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.

The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-

back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in

response to driving condition.

DTC Logic

INFOID:0000000001503092

D
DTC DETECTION LOGIC

NOTE:

If DTC P2101 is displayed with DTC P2100 or P2119, first perform the trouble diagnosis for DTC P2100 or P2119. Refer to EC-347, "DTC Logic" or EC-356, "DTC Logic".

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause
F

· Harness or connectors

P2101

Electric throttle control Electric throttle control function does not oper-

performance

ate properly.

(Throttle control motor circuit is open or shorted)

· Electric throttle control actuator

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11V when engine

is running.

K >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 2 seconds.

2. Turn ignition switch ON (READY).

3. Depress the accelerator pedal to start engine, then keep engine running for at least 5 seconds.

4. Check DTC.

Is DTC detected?

YES >> Go to EC-349, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503093

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2. NO >> Repair or replace ground connection.
2.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

1. Check the voltage between ECM harness connector and ground.

Revision: May 2007

EC-349

2007 Altima Hybrid

P2101 ELECTRIC THROTTLE CONTROL FUNCTION
< COMPONENT DIAGNOSIS >

[QR25DE]

ECM Ground
Connector Terminal

Condition

Voltage

Ignition switch OFF Approx. 0V

F14

Ground

Ignition switch ON Battery voltage

Is the inspection result normal?
YES >> GO TO 7. NO >> GO TO 3.
3.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT

1. Disconnect ECM harness connector. 2. Disconnect IPDM E/R harness connector F10. 3. Check the continuity between ECM harness connector and IPDM E/R harness connector.

IPDM E/R

ECM

Continuity

Connector Terminal Connector Terminal

F10

F14

Existed

1. Check the continuity between ECM harness connector and IPDM E/R harness connector.

IPDM E/R

ECM

Continuity

Connector Terminal Connector Terminal

F10

F14

Existed

2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK FUSE

1. Disconnect 15A fuse (No. 43) from IPDM E/R. 2. Check 15A fuse for blown.
Is the inspection result normal?
YES >> GO TO 6. NO >> Replace 15A fuse.
6.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R. NO >> Repair or replace harness or connectors.
7.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

1. Turn ignition switch OFF. 2. Disconnect electric throttle control actuator harness connector. 3. Disconnect ECM harness connector. 4. Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

Revision: May 2007

EC-350

2007 Altima Hybrid

P2101 ELECTRIC THROTTLE CONTROL FUNCTION
< COMPONENT DIAGNOSIS >

[QR25DE]

Electric throttle control actuator

ECM

Continuity

Connector

Terminal Connector Terminal

Not existed

Existed

F57

F14

Existed

Not existed

5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 8. NO >> Repair or replace.
8.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Remove the intake air duct. 2. Check if foreign matter is caught between the throttle valve (1)
and the housing.

2. Electric throttle control actuator
: Vehicle front
Is the inspection result normal? YES >> GO TO 9. NO >> Remove the foreign matter and clean the electric throttle control actuator inside.

9.CHECK THROTTLE CONTROL MOTOR
Refer to EC-351, "Component Inspection". Is the inspection result normal?
YES >> GO TO 10. NO >> GO TO 11.
10.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident". Is the inspection result normal?
YES >> GO TO 11. NO >> Repair or replace harness or connectors.
11.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. 2. Go to EC-352, "Special Repair Requirement".

>> INSPECTION END
Component Inspection
1.CHECK THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector. 2. Check resistance between electric throttle control actuator terminals as follows.

A EC
C D E F G H
ALBIA0061ZZ
I J K L M N
INFOID:0000000001503094
O P

Terminals

Resistance

5 and 6 Approx. 1 - 15 [at 25 °C (77°F)]

Is the inspection result normal? YES >> INSPECTION END

Revision: May 2007

EC-351

2007 Altima Hybrid

P2101 ELECTRIC THROTTLE CONTROL FUNCTION
< COMPONENT DIAGNOSIS >
NO >> GO TO 2.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. 2. Go to EC-352, "Special Repair Requirement".

[QR25DE]

>> INSPECTION END

Special Repair Requirement

INFOID:0000000001503095

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

Revision: May 2007

EC-352

2007 Altima Hybrid

P2118 THROTTLE CONTROL MOTOR
< COMPONENT DIAGNOSIS >
P2118 THROTTLE CONTROL MOTOR
Description

[QR25DE]
A
INFOID:0000000001503096

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.

The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-

back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in

response to driving condition.

DTC Logic

C
INFOID:0000000001503097

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P2118

Throttle control motor circuit short

ECM detects short in both circuits between ECM and throttle control motor.

· Harness or connectors

(Throttle control motor circuit is shorted.)

· Electric throttle control actuator

(Throttle control motor)

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

I >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 2 seconds.

2. Turn ignition switch ON (READY).

3. Depress the accelerator pedal to start engine, then keep engine running for at least 5 seconds.

4. Check DTC.

Is DTC detected?

YES >> Go to EC-353, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503098

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect electric throttle control actuator harness connector.

2. Disconnect ECM harness connector.

3. Check the continuity between electric throttle control actuator harness connector and ECM harness con-

nector.

Revision: May 2007

EC-353

2007 Altima Hybrid

P2118 THROTTLE CONTROL MOTOR
< COMPONENT DIAGNOSIS >

[QR25DE]

Electric throttle control actuator

ECM

Continuity

Connector

Terminal Connector Terminal

Not existed

Existed

F57

F14

Existed

Not existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 3. NO >> Repair or replace.
3.CHECK THROTTLE CONTROL MOTOR

Refer to EC-354, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 5.
4.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".
Is the inspection result normal?
YES >> GO TO 5. NO >> Repair or replace harness or connectors.
5.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. 2. Go to EC-354, "Special Repair Requirement".

INFOID:0000000001503099

Terminals

Resistance

5 and 6 Approx. 1 - 15 [at 25 °C (77°F)]

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. 2. Go to EC-352, "Special Repair Requirement".

>> INSPECTION END

Special Repair Requirement

INFOID:0000000001503100

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

Revision: May 2007

EC-354

2007 Altima Hybrid

P2118 THROTTLE CONTROL MOTOR
< COMPONENT DIAGNOSIS > >> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END

[QR25DE]
A EC
C D E F G H I J K L M N O P

Revision: May 2007

EC-355

2007 Altima Hybrid

P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
< COMPONENT DIAGNOSIS >
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR

[QR25DE]

Description

INFOID:0000000001503101

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throttle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC Logic

INFOID:0000000001503102

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P2119

Electric throttle control actuator does not func-

A) tion properly due to the return spring malfunc-

Electric throttle control actuator

tion.
Throttle valve opening angle in fail-safe mode is not in specified range.

· Electric throttle control actuator

C) ECM detect the throttle valve is stuck open.

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B
1. Turn ignition switch ON and wait at least 1 second. 2. Set shift lever to D position and wait at least 3 seconds. 3. Set shift lever to P or N position. 4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON and wait at least 1 second. 6. Set shift lever to D position and wait at least 3 seconds. 7. Set shift lever to P or N position. 8. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON. 9. Check DTC.
Is DTC detected?
YES >> Go to EC-357, "Diagnosis Procedure". NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second. 2. Set shift lever to D position and wait at least 3 seconds. 3. Set shift lever to P position. 4. Turn ignition switch ON (READY). 5. Depress the accelerator pedal to start engine, then keep engine running for at least 3 seconds. 6. Check DTC.
Is DTC detected?
YES >> Go to EC-357, "Diagnosis Procedure". NO >> INSPECTION END

Revision: May 2007

EC-356

2007 Altima Hybrid

P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
< COMPONENT DIAGNOSIS >
Diagnosis Procedure
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

[QR25DE]
INFOID:0000000001503103
A

1. Turn ignition switch OFF.

2. Remove the intake air duct.

3. Check if foreign matter is caught between the throttle valve (1) and the housing.

C
2. Electric throttle control actuator

: Vehicle front

Is the inspection result normal?

YES >> GO TO 2.

NO >> Remove the foreign matter and clean the electric throttle

control actuator inside.

2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. 2. Go to EC-330, "Special Repair Requirement".

ALBIA0150ZZ
F

G >> INSPECTION END

Special Repair Requirement
1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

INFOID:0000000001503104
H

Refer to EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.

2.PERFORM IDLE AIR VOLUME LEARNING

Refer to EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

K >> END

Revision: May 2007

EC-357

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P2135 TP SENSOR

P2135 TP SENSOR

Description

DTC Logic

[QR25DE]
INFOID:0000000001503105
PBIB0145E INFOID:0000000001503106

DTC DETECTION LOGIC
NOTE: If DTC P2135 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-314, "DTC Logic".

DTC No. Trouble diagnosis name

DTC detecting condition

P2135

Throttle position sensor circuit range/performance

Rationally incorrect voltage is sent to ECM compared with the signals from TP sensor 1 and TP sensor 2.

Possible cause
· Harness or connector (TP sensor 1 and 2 circuit is open or shorted.)
· Electric throttle control actuator (TP sensor 1 and 2)

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY). 2. Depress the accelerator pedal to start engine, then keep engine running for at least 1 second. 3. Check DTC.
Is DTC detected?
YES >> Go to EC-358, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503107

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.

Revision: May 2007

EC-358

2007 Altima Hybrid

P2135 TP SENSOR
< COMPONENT DIAGNOSIS >
NO >> Repair or replace ground connection.
2.CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator harness connector. 2. Turn ignition switch ON. 3. Check the voltage between electric throttle control actuator harness connector and ground.

[QR25DE]
A EC

Electric throttle control actuator Ground Voltage

Connector

Terminal

F57

Ground Approx. 5V

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.

3.CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. 3. Check the continuity between electric throttle control actuator harness connector and ground.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal Connector Terminal

F57

F13

Existed

Is the inspection result normal?

YES >> GO TO 4.

NO >> Repair open circuit.

4.CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. 3. Check the continuity between electric throttle control actuator harness connector and ground.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal Connector Terminal

F57

F13

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between electric throttle control actuator harness connector and ground.

Electric throttle control actuator

ECM

Connector

Continuity Terminal Connector Terminal

F57

F13

Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 6. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK THROTTLE POSITION SENSOR

Refer to EC-360, "Component Inspection".

Revision: May 2007

EC-359

2007 Altima Hybrid

P2135 TP SENSOR
< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> GO TO 8. NO >> GO TO 7.
7.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. 2. Go to EC-360, "Special Repair Requirement".

[QR25DE]

>> INSPECTION END
8.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Component Inspection

INFOID:0000000001503108

1.CHECK THROTTLE POSITION SENSOR

Connector

ECM Terminal

Ground

Condition

Voltage

Fully released More than 0.36V

(TP sensor 1 signal)

Fully depressed Less than 4.75V

F13

Ground Accelerator pedal

Fully released Less than 4.75V

(TP sensor 2 signal)

Fully depressed More than 0.36V

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. 2. Go to EC-360, "Special Repair Requirement".

>> INSPECTION END

Special Repair Requirement

INFOID:0000000001503109

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to EC-15, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

Revision: May 2007

EC-360

2007 Altima Hybrid

P2423 HC ADSORPTION CATALYST FUNCTION
< COMPONENT DIAGNOSIS >
P2423 HC ADSORPTION CATALYST FUNCTION
DTC Logic

[QR25DE]
A
INFOID:0000000001503110

DTC DETECTION LOGIC

The ECM monitors the phase gap between heated oxygen sensor 2

signal and heated oxygen sensor 3 signal.

The phase gap between heated oxygen sensor 2 signal and heated

oxygen sensor 3 signal becomes small as the HC adsorption cata-

lyst (under floor) is deteriorated.

When the phase gap between heated oxygen sensor 2 signal and

heated oxygen sensor 3 signal approaches a specified limit value,

the HC adsorption catalyst (under floor) malfunction is diagnosed.

JMBIA0119GB

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause
F
· HC adsorption catalyst (under floor)

P2423

HC adsorption catalyst efficiency below threshold

· HC adsorption catalyst (under floor) does not operate properly.
· HC adsorption catalyst (under floor) does not have enough oxygen storage capacity.

· Exhaust tube · Intake air leaks · Fuel injector · Fuel injector leaks · Spark plug

DTC CONFIRMATION PROCEDURE

· Improper ignition timing
H

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- I

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

With CONSULT-III

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating

temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON (READY).

6. Repeat following procedure 2 times.

- Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

- Stop vehicle.

NOTE:

Never turn ignition switch OFF.

7. Select "DTC & SRT CONFIRMATION" then "SRT WORK SUPPORT" mode with CONSULT-III.

8. Drive vehicle at a speed of 80 km/h (50 MPH) or more until "INCMP" of "CATALYST" changes to "CMPLT".

NOTE:

· Keep the vehicle speed as steady as possible during the cruising.

· It will take at most 3 minutes until "INCMP" of "CATALYST" changes to "CMPLT".

9. Check 1st trip DTC.

Revision: May 2007

EC-361

2007 Altima Hybrid

P2423 HC ADSORPTION CATALYST FUNCTION
< COMPONENT DIAGNOSIS >

[QR25DE]

Diagnosis Procedure

INFOID:0000000001503111

1.CHECK EXHAUST SYSTEM

Visually check exhaust tubes and muffler for dent.
Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace.
2.CHECK EXHAUST GAS LEAK

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine. 2. Listen for an exhaust gas leak before the HC adsorption catalyst (under floor).

Is exhaust gas leak detected?
OK >> Repair or replace. NG >> GO TO 3.
3.CHECK INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Repair or replace. NO >> GO TO 4.
4.CHECK IDLE SPEED AND IGNITION TIMING
For procedure, refer to EC-11, "BASIC INSPECTION : Special Repair Requirement". For specification, refer to EC-455, "Idle Speed" and EC-455, "Ignition Timing".
Is the inspection result normal?
YES >> GO TO 5. NO >> Follow the EC-11, "BASIC INSPECTION : Special Repair Requirement".
5.CHECK FUEL INJECTOR

Revision: May 2007

EC-362

JMBIA0120GB
2007 Altima Hybrid

P2423 HC ADSORPTION CATALYST FUNCTION
< COMPONENT DIAGNOSIS >
1. Turn ignition switch OFF and then turn ON. 2. Check the voltage between ECM harness connector and ground.

[QR25DE]
A

ECM

Connector

Terminal

Ground

Voltage

F14

Ground

Battery voltage

Is the inspection result normal?

YES >> GO TO 6.

NO >> Perform EC-235, "Diagnosis Procedure".

6.CHECK FUNCTION OF IGNITION COIL-I

CAUTION:

Do the following procedure in the place where ventilation is good without the combustible. 1. Turn ignition switch OFF.

2. Remove fuel pump fuse in IPDM E/R to release fuel pressure.

NOTE:

Do not use CONSULT-III to release fuel pressure, or fuel pressure applies again during the following pro- G

cedure.

3. Turn ignition switch ON (READY).

4. Depress accelerator pedal and keep it.

5. After engine stalls, check DTC.

If DTC is detected, erase DTC and go to next steps.

If DTC is not detected, go to next steps.

6. Turn ignition switch OFF.

7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.

8. Remove ignition coil and spark plug of the cylinder to be checked.

9. Repeat steps 3 to 5 for two or three times to remove combustion gas in the cylinder.

10. Connect spark plug and harness connector to ignition coil.

11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -

0.66 in) between the edge of the spark plug and grounded metal

portion as shown in the figure.

12. Turn ignition switch ON (READY).

13. Depress accelerator pedal for about 3 seconds, and check

whether spark is generated between the spark plug and the

grounded metal portion.

Spark should be generated.

CAUTION:

· Do not approach to the spark plug and the ignition coil

JMBIA0066GB

within 50 cm (19.7 in). Be careful not to get an electrical shock while checking, because the electrical discharge voltage becomes 20kV or more.

· It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken.

NOTE:

When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal- O

functioning.

Is the inspection result normal?

YES >> GO TO 10.

NO >> GO TO 7.

7.CHECK FUNCTION OF IGNITION COIL-II

1. Turn ignition switch OFF. 2. Disconnect spark plug and connect a known-good spark plug. 3. Turn ignition switch ON (READY).

Revision: May 2007

EC-363

2007 Altima Hybrid

P2423 HC ADSORPTION CATALYST FUNCTION

< COMPONENT DIAGNOSIS >

[QR25DE]

4. Depress the accelerator pedal to crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and the grounded metal portion.

Spark should be generated.

Is the inspection result normal?
YES >> GO TO 8. NO >> Check ignition coil, power transistor and their circuits. Refer to EC-380, "Diagnosis Procedure".
8.CHECK SPARK PLUG

Check the initial spark plug for fouling, etc.

Is the inspection result normal?

YES NO

>> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-19, "SPARK PLUG (PLATINUM-TIPPED TYPE) : Removal and Installation".
>> Repair or clean spark plug. Then GO TO 9.

SEF156I
9.CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs. 2. Turn ignition switch ON (READY). 3. Depress the accelerator pedal to crank engine for about 3 seconds, and recheck whether spark is gener-
ated between the spark plug and the grounded metal portion.
Spark should be generated.
Is the inspection result normal?
YES >> INSPECTION END NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-19, "SPARK
PLUG (PLATINUM-TIPPED TYPE) : Removal and Installation".
10.CHECK FUEL INJECTOR
1. Turn ignition switch OFF. 2. Remove fuel injector assembly.
Refer to EM-34, "Removal and Installation". Keep fuel hose and all fuel injectors connected to fuel tube. 3. Disconnect all ignition coil harness connectors. 4. Reconnect all fuel injector harness connectors disconnected. 5. Turn ignition switch ON. Make sure fuel does not drip from fuel injector.
Is the inspection result normal?
YES >> GO TO 11. NO >> Replace the fuel injector(s) from which fuel is dripping.
11.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
Is the trouble fixed?
YES >> INSPECTION END NO >> Replace HC adsorption catalyst (under floor).

Revision: May 2007

EC-364

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
P2A00 A/F SENSOR 1

P2A00 A/F SENSOR 1

Description

[QR25DE]
A
INFOID:0000000001503112
EC

JMBIA0112GB

DTC Logic

PBIB3354E

INFOID:0000000001503113

DTC DETECTION LOGIC
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be J shifted to LEAN side or RICH side.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible Cause

P2A00

Air fuel ratio (A/F) sensor 1 circuit range/performance

· The output voltage computed by ECM from the A/F sensor 1 signal is shifted to the lean side for a specified period.
· The A/F signal computed by ECM from the A/F sensor 1 signal is shifted to the rich side for a specified period.

· A/F sensor 1 · A/F sensor 1 heater · Fuel pressure · Fuel injector · Intake air leaks

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- N ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement".
2. Turn ignition switch OFF and wait at least 10 seconds.

Revision: May 2007

EC-365

2007 Altima Hybrid

P2A00 A/F SENSOR 1

< COMPONENT DIAGNOSIS >

[QR25DE]

3. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
4. Turn ignition switch OFF and wait at least 10 seconds. 5. Turn ignition switch ON. 6. Turn ignition switch OFF and wait at least 10 seconds. 7. Turn ignition switch ON (READY). 8. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.
CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. NOTE: Keep the vehicle speed as steady as possible during the cruising. 9. Stop the vehicle and shift the selector lever to P position. 10. Repeat following procedure 4 times. - Fully depress the accelerator pedal and keep the engine speed 2,500 rpm for 5 minutes. - Fully release the accelerator pedal. 11. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Go to EC-366, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503114

1.CHECK GROUND CONNECTION

1. Loosen and retighten the A/F sensor 1.

Tightening torque: 50 N-m (5.1 kg-m, 37 ft-lb)

>> GO TO 3.
3.CHECK FOR INTAKE AIR LEAK
1. Activate "INSPECTION MODE 1" (HBC-103) to start engine. 2. Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> GO TO 4. NO >> Repair or replace.
4.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
1. Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement".
2. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and let engine idle for at least 10 minutes.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?
YES >> Perform trouble diagnosis for DTC P0171or P0172. Refer to EC-221, "DTC Logic" or EC-225, "DTC Logic".
NO >> GO TO 5.
5.CHECK HARNESS CONNECTOR
1. Turn ignition switch OFF. 2. Disconnect A/F sensor 1 harness connector. 3. Check harness connector for water.

Water should not exit.
Revision: May 2007

EC-366

2007 Altima Hybrid

P2A00 A/F SENSOR 1
< COMPONENT DIAGNOSIS >
Is the inspection result normal?
YES >> GO TO 6. NO >> Repair or replace harness connector.
6.CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch ON. 2. Check the voltage between A/F sensor 1 harness connector and ground.

[QR25DE]
A EC

A/F sensor 1

Ground

Voltage

Connector Terminal

F44

Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 8.

NO >> GO TO 7.

7.DETECT MALFUNCTIONING PART

Check the following.

· IPDM E/R harness connector F10

· 15A fuse (No. 37)

· Harness for open or short between A/F sensor 1 and fuse G

>> Repair or replace harness or connectors.

8.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

A/F sensor 1

ECM

Continuity Connector Terminal Connector Terminal

F44

F13

Existed

4. Check the continuity between ECM harness connector or A/F sensor 1 harness connector and ground.

A/F sensor 1

ECM

Ground Continuity

Connector Terminal Connector Terminal

F44

F13

Ground Not existed

5. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 9.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

9.CHECK A/F SENSOR 1 HEATER

Refer to EC-137, "Component Inspection".
Is the inspection result normal? P
YES >> GO TO 10. NO >> GO TO 11.
10.CHECK INTERMITTENT INCIDENT

Perform GI-42, "Intermittent Incident". Is the inspection result normal?
YES >> GO TO 11.

Revision: May 2007

EC-367

2007 Altima Hybrid

P2A00 A/F SENSOR 1
< COMPONENT DIAGNOSIS >
NO >> Repair or replace.
11.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

[QR25DE]

With CONSULT-III 1. Turn ignition switch ON. 2. Select "A/F ADJ-B1" in "DATA MONITOR" mode with CONSULT-III. 3. Make sure that "0.000" is displayed on CONSULT-III screen.
Is "0.000" displayed?
YES >> INSPECTION END NO >> GO TO 13.
13.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

Clear the mixture ratio self-learning value. Refer to EC-18, "MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement".
Do you have CONSULT-III?
YES >> GO TO 14. NO >> INSPECTION END
14.CONFIRM A/F ADJUSTMENT DATA

With CONSULT-III 1. Turn ignition switch ON. 2. Select "A/F ADJ-B1" in "DATA MONITOR" mode with CONSULT-III. 3. Make sure that "0.000" is displayed on CONSULT-III screen.

>> INSPECTION END

Revision: May 2007

EC-368

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
ASCD BRAKE SWITCH
Description

ASCD BRAKE SWITCH

[QR25DE]
A
INFOID:0000000001503115

When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. EC ECM and hybrid vehicle control ECU detects the state of the brake pedal by this input of two kinds (ON/OFF signal). Refer to EC-45, "System Description" for the ASCD function.

Component Function Check

INFOID:0000000001503116

1.CHECK FOR ASCD BRAKE SWITCH FUNCTION

With CONSULT-III

1. Turn ignition switch ON.

2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT-III.

3. Check "BRAKE SW1" indication under the following conditions.

Monitor item

Condition

Indication

Slightly depressed OFF

BRAKE SW1 Brake pedal

Fully released

Without CONSULT-III

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector and ground.

Connector

ECM Terminal

Ground

Condition

H
Voltage

E10

110 (ASCD brake switch signal)

Ground

Brake pedal

Slightly depressed Approx. 0V

Fully released

Battery voltage

Is the inspection result normal?

YES >> INSPECTION END.

NO >> Refer to EC-369, "Diagnosis Procedure".

Diagnosis Procedure

INFOID:0000000001503117

1.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ASCD brake switch harness connector.

3. Turn ignition switch ON.

4. Check the voltage between ASCD brake switch harness connector and ground.

ASCD brake switch

Ground

Voltage

Connector Terminal

E37

Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 3.

NO >> GO TO 2.

2.DETECT MALFUNCTIONING PART

Check the following.

· Fuse block (J/B) connector E6

· Junction block connector E46, E48

· 10A fuse (No. 3)

· Harness for open or short between ASCD brake switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

Revision: May 2007

EC-369

2007 Altima Hybrid

ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS >
3.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

[QR25DE]

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.

ASCD brake switch

ECM

Continuity

Connector Terminal Connector Terminal

E37

E10

110

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5. NO >> GO TO 4.
4.DETECT MALFUNCTIONING PART

Check the following. · Junction block connector E45, E46 · Harness for open or short between ASCD brake switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK ASCD BRAKE SWITCH
Refer to EC-370, "Component Inspection (ASCD Brake Switch)". Is the inspection result normal?
YES >> GO TO 6. NO >> Replace ASCD brake switch.
6.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

Component Inspection (ASCD Brake Switch)

INFOID:0000000001503118

1.CHECK ASCD BRAKE SWITCH-I

1. Turn ignition switch OFF. 2. Disconnect ASCD brake switch harness connector. 3. Check the continuity between ASCD brake switch terminals under the following conditions.

Terminals

Condition

Continuity

1 and 2

Fully released

Existed

Brake pedal

Slightly depressed Not existed

Is the inspection result normal?
YES >> INSPECTION END NO >> GO TO 2.
2.CHECK ASCD BRAKE SWITCH-II

1. Adjust ASCD brake switch installation. Refer to BR-11, "Inspection and Adjustment". 2. Check the continuity between ASCD brake switch terminals under the following conditions.

Terminals

Condition

Continuity

1 and 2

Fully released

Existed

Brake pedal

Slightly depressed Not existed

Is the inspection result normal?

Revision: May 2007

EC-370

2007 Altima Hybrid

ASCD BRAKE SWITCH
< COMPONENT DIAGNOSIS >
YES >> INSPECTION END NO >> Replace ASCD brake switch.

Revision: May 2007

EC-371

[QR25DE]
A EC
C D E F G H I J K L M N O P
2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
COOLING FAN
Description

COOLING FAN

[QR25DE]
INFOID:0000000001503119

COOLING FAN CONTROL MODULE
Cooling fan control module receives ON/OFF pulse duty signal from IPDM E/R. Corresponding to this ON/OFF pulse duty signal, cooling fan control module sends cooling fan motor operating voltage to cooling fan motor. The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.

COOLING FAN MOTOR
Cooling fan motor receives cooling fan motor operating voltage from cooling fan control module. The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.

Component Function Check

INFOID:0000000001503120

1.CHECK COOLING FAN FUNCTION

Diagnosis Procedure

INFOID:0000000001503121

1.CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-I

1. Turn ignition switch OFF. 2. Disconnect cooling fan control module harness connector E231. 3. Turn ignition switch ON. 4. Check the voltage between cooling fan control module harness connector and ground.

Cooling fan control module Ground
Connector Terminal

Voltage

E231

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 2. NO >> GO TO 7.
2.CHECK COOLING FAN CONTROL MODULE GROUND CIRCUIT

1. Turn ignition switch OFF. 2. Check the continuity between cooling fan control module harness connector and ground.

Cooling fan control module Connector Terminal

Ground

Continuity

E231

Ground Existed

3. Also check harness for short to power. Is the inspection result normal?
YES >> GO TO 3. NO >> Repair open circuit or short to power in harness or connectors.

Revision: May 2007

EC-372

2007 Altima Hybrid

COOLING FAN
< COMPONENT DIAGNOSIS >
3.CHECK IPDM E/R GROUND CIRCUIT
1. Disconnect IPDM E/R harness connectors E17, E18. 2. Check the continuity between IPDM E/R harness connector and ground.

[QR25DE]
A

IPDM E/R Connector Terminal

Ground

Continuity

E18

Ground Existed

E17

3. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 4.

NO >> Repair open circuit or short to power in harness or connectors.
4.CHECK COOLING FAN CONTROL SIGNAL CIRCUIT

1. Disconnect IPDM E/R harness connector E9. 2. Check the continuity between IPDM E/R harness connector and cooling fan control module harness con- F
nector.

IPDM E/R

Cooling fan control module

Continuity

Connector Terminal Connector Terminal

E37

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK COOLING FAN CONTROL MODULE OUTPUT SIGNAL CIRCUIT

1. Reconnect all harness connectors disconnected.

2. Disconnect cooling fan control module harness connectors E232, E233.

3. Turn ignition switch ON.

4. Check the voltage between cooling fan control module harness connector and ground.

Cooling fan control module

Connector

Ground Terminal

Voltage

E232

Ground Battery voltage

E233

Is the inspection result normal?

YES >> GO TO 6.

NO >> Replace cooling fan control module.

6.CHECK COOLING FAN MOTORS -1 AND -2

Refer to EC-375, "Component Inspection (Cooling Fan Motor)".

Is the inspection result normal?

YES >> GO TO 11.

NO >> Replace cooling fan motor.

7.CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF. 2. Disconnect cooling fan relay harness connector. 3. Turn ignition switch ON. 4. Check the voltage between cooling fan relay harness connector and ground.

Revision: May 2007

EC-373

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

COOLING FAN

[QR25DE]

Cooling fan relay-1 Ground
Connector Terminal

Voltage

E82

Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 9. NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART

Check the following. · IPDM E/R harness connector E18 · 50A fusible link (letter F) · Harness for open or short between cooling fan relay-1 and fuse · Harness for open or short between cooling fan relay-1 and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.
9.CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF. 2. Disconnect IPDM E/R harness connector E6. 3. Check the continuity between cooling fan relay-1 harness connector and IPDM E/R harness connector.

Cooling fan relay-1

IPDM E/R

Continuity

Connector Terminal Connector Terminal

E82

E17

Existed

4. Check the continuity between cooling fan relay harness connector and cooling fan control module harness connector.

Cooling fan relay-1 Cooling fan control module Continuity
Connector Terminal Connector Terminal

E82

E231

Existed

5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 11. NO >> GO TO 10.
10.DETECT MALFUNCTIONING PART

Check the following. · Harness connector E81, E207 · Harness for open or short between cooling fan relay-1 and cooling fan control module

>> Repair open circuit or short to ground or short to power in harness or connectors.
11.CHECK COOLING FAN RELAY-1
Refer to EC-375, "Component Inspection (Cooling Fan Relay)". Is the inspection result normal?
YES >> GO TO 12. NO >> Replace cooling fan relay-1.
12.CHECK INTERMITTENT INCIDENT
Perform GI-42, "Intermittent Incident". Is the inspection result normal?

Revision: May 2007

EC-374

2007 Altima Hybrid

COOLING FAN
< COMPONENT DIAGNOSIS > YES >> Replace IPDM E/R. NO >> Repair or replace harness connectors.
Component Inspection (Cooling Fan Motor)
1.CHECK COOLING FAN MOTOR
1. Turn ignition switch OFF. 2. Disconnect cooling fan control module harness connectors E232, E233. 3. Supply cooling fan control module terminals with battery voltage and check operation.

Cooling fan control module

Motor

Connector

Terminal (+) ()

Operation

E232

Cooling fan operates.

E233

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace cooling fan motor.

Component Inspection (Cooling Fan Relay)

1.CHECK COOLING FAN RELAY-1

1. Turn ignition switch OFF. 2. Remove cooling fan relay-1. 3. Check the continuity between cooling fan relay-1 terminals
under the following conditions.

Terminals

Conditions

3 and 5

12V direct current supply between terminals 1 and 2 No current supply

Is the inspection result normal?

YES >> INSPECTION END NO >> Replace cooling fan relay.

Continuity Existed
Not existed

[QR25DE]
A
INFOID:0000000001503122
EC

INFOID:0000000001503123

K
SEF090M
L

Revision: May 2007

EC-375

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
FUEL PUMP
Description

FUEL PUMP

[QR25DE]
INFOID:0000000001503124

Sensor

Input signal to ECM

ECM Function

Actuator

Crankshaft position sensor (POS) Camshaft position sensor (PHASE)
Battery

Engine speed* Battery voltage*

Fuel pump control

Fuel pump relay Fuel pump

*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine startability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump.

Ignition switch is turned to ON. Engine running and cranking When engine is stopped Except as shown above

Condition

Component Function Check

1.CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON. 2. Pinch fuel feed hose (1) with two fingers.

Fuel pump operation Operates for 1 second.
Operates. Stops in 1.5 seconds.
Stops.
INFOID:0000000001503125

: Vehicle front

Fuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ON. Is the inspection result normal? YES >> INSPECTION END NO >> EC-376, "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Turn ignition switch ON. 4. Check the voltage between ECM harness connector and ground.

ALBIA0151ZZ INFOID:0000000001503126

ECM Ground
Connector Terminal

Voltage

F14

14 Ground Battery voltage

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 2.

Revision: May 2007

EC-376

2007 Altima Hybrid

FUEL PUMP
< COMPONENT DIAGNOSIS >
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF. 2. Disconnect IDPDM E/R harness connector F10. 3. Check the continuity between IPDM E/R harness connector and ECM harness connector.

ECM

IPDM E/R

Continuity

Connector Terminal Connector Terminal

F14

F10

Existed

Is the inspection result normal?
YES >> GO TO 3. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK CONDENSER-1 POWER SUPPLY CIRCUIT-I

1. Reconnect all harness connectors disconnected. 2. Disconnect condenser-1 harness connector. 3. Turn ignition switch ON. 4. Check the voltage between condenser-1 harness connector and ground.

[QR25DE]
A EC
C D E F

Condenser-1

Ground

Voltage

Connector Terminal

B17

Ground Battery voltage should exist for 1 second after ignition switch is turned ON.

Is the inspection result normal?

YES >> GO TO 5.

NO >> GO TO 4.

4.CHECK 15A FUSE

1. Turn ignition switch OFF.

2. Disconnect 15A fuse (No. 32) from IPDM E/R. 3. Check 15A fuse.

Is the inspection result normal?

YES >> GO TO 6. NO >> Replace fuse.

5.CHECK CONDENSER-1 POWER SUPPLY CIRCUIT-II

1. Disconnect IPDM E/R harness connector E18.

2. Check the continuity between IPDM E/R harness connector and condenser-1 harness connector.

IPDM E/R

Condenser-1

Continuity

Connector Terminal Connector Terminal

F18

B17

Existed

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 13.

NO >> GO TO 7.

6.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors E29, B10

· IPDM E/R connector E18

· Harness for open or short between IPDM E/R and condenser-1

>> Repair open circuit or short to power in harness or connectors.

Revision: May 2007

EC-377

2007 Altima Hybrid

FUEL PUMP
< COMPONENT DIAGNOSIS >
7.CHECK CONDENSER GROUND CIRCUIT
1. Turn ignition switch OFF. 2. Disconnect dropping resistor harness connector. 3. Check the continuity between condenser-1 harness connector and ground.

[QR25DE]

Condenser-1 Ground
Connector Terminal

Continuity

B17

Ground

Existed

4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 8. NO >> Repair open circuit or short to power in harness or connectors.
8.CHECK CONDENSER-1

Refer to EC-379, "Component Inspection (Condenser-1)".
Is the inspection result normal?
YES >> GO TO 9. NO >> Replace condenser-1.
9.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III

1. Disconnect "fuel level sensor unit and fuel pump" harness connector. 2. Check the continuity between IPDM E/R harness connector and "fuel level sensor unit and fuel pump" and
ground.

IPDM E/R Connector Terminal

Fuel level sensor unit and fuel pump
Connector Terminal

Continuity

E18

B42

Existed

Is the inspection result normal?
YES >> GO TO 11. NO >> GO TO 10.
10.DETECT MALFUNCTIONING PART

Check the following. · Harness connector E29, B10 · Harness for open or short between "fuel level sensor unit and fuel pump" and IPDM E/R · Harness for open or short between "fuel level sensor unit and fuel pump" and ground

>> Repair open circuit or short to power in harness or connectors.
11.CHECK FUEL PUMP GROUND CIRCUIT
1. Check the continuity between "fuel level sensor unit and fuel pump" and ground.

Fuel level sensor unit and fuel pump
Connector Terminal

Ground

Continuity

B42

Ground

Existed

2. Also heck harness for short to power.
Is the inspection result normal?
YES >> GO TO 12. NO >> Repair open circuit or short to power in harness or connectors.
12.CHECK FUEL PUMP

Revision: May 2007

EC-378

2007 Altima Hybrid

FUEL PUMP
< COMPONENT DIAGNOSIS > Refer to EC-379, "Component Inspection (Fuel Pump)". Is the inspection result normal?
YES >> GO TO 13. NO >> Replace fuel pump.
13.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
Is the inspection result normal? YES >> Replace IPDM E/R. NO >> Repair or replace harness or connectors.
Component Inspection (Fuel Pump)
1.CHECK FUEL PUMP
1. Turn ignition switch OFF. 2. Disconnect "fuel level sensor unit and fuel pump" harness connector. 3. Check resistance between "fuel level sensor unit and fuel pump" terminals as follows.

Terminals

Resistance

1 and 3 0.2 - 5.0 [at 25°C (77°F)]

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace "fuel level sensor unit and fuel pump".

Component Inspection (Condenser-1)

1.CHECK CONDENSER

1. Turn ignition switch OFF. 2. Disconnect condenser-1 harness connector. 3. Check resistance between condenser-1 terminals as follows.

Terminal

Resistance

1 and 2 Above 1M [at 25°C (77°F)]

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace condenser-1.

[QR25DE]
A EC
C D
INFOID:0000000001503127
E F G H
INFOID:0000000001503128
I J K L M

Revision: May 2007

EC-379

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >
IGNITION SIGNAL

IGNITION SIGNAL

[QR25DE]

Description

INFOID:0000000001503129

The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit.

Component Function Check

INFOID:0000000001503130

1.INSPECTION START

1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON (READY). 3. Depress the accelerator pedal to start engine.
Does the engine start?
YES-1 >> With CONSULT-III: GO TO 2. YES-2 >> Without CONSULT-III: GO TO 3. NO >> Go to EC-380, "Diagnosis Procedure".
2.IGNITION SIGNAL FUNCTION

With CONSULT-III 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON (READY). 3. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III. 4. Make sure that each circuit produces a momentary engine speed drop.
Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-380, "Diagnosis Procedure".
3.IGNITION SIGNAL FUNCTION

Without CONSULT-III 1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, then let engine idle. 2. Read the voltage signal between ECM harness connector and ground.

ECM Ground
Connector Terminal

F14

Ground

Voltage signal

21
JMBIA0085GB
NOTE: The pulse cycle changes depending on rpm at idle. Is the inspection result normal? YES >> INSPECTION END NO >> Go to EC-380, "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. 2. Check the voltage between ECM harness connector and ground.

INFOID:0000000001503131

Revision: May 2007

EC-380

2007 Altima Hybrid

< COMPONENT DIAGNOSIS >

IGNITION SIGNAL

[QR25DE]

ECM

Ground

Voltage

Connector Terminal

E10

105 Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 2.

NO >> Go to EC-118, "Diagnosis Procedure".

2.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.

2. Disconnect condenser-2 harness connector.

3. Turn ignition switch ON.

4. Check the voltage between condenser-2 harness connector and ground.

Condenser

Ground

Voltage

Connector Terminal

F26

Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.

3.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector F10.

3. Check the continuity between IPDM E/R harness connector and condenser-2 harness connector.

IPDM E/R

Condenser-2

Continuity

Connector Terminal Connector Terminal

F10

F26

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> Go to EC-118, "Diagnosis Procedure".

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK CONDENSER-2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Check the continuity between condenser-2 harness connector and ground. M

Condenser-2

Ground Continuity

Connector Terminal

F26

Ground Existed

3. Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK CONDENSER

Refer to EC-384, "Component Inspection (Condenser-2)"
Is the inspection result normal?
YES >> GO TO 6. NG >> Replace condenser.
6.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V

Revision: May 2007

EC-381

2007 Altima Hybrid

IGNITION SIGNAL
< COMPONENT DIAGNOSIS >
1. Reconnect all harness connectors disconnected. 2. Disconnect ignition coil harness connector. 3. Turn ignition switch ON. 4. Check the voltage between ignition coil harness connector and ground.

[QR25DE]

Ignition coil Ground
Cylinder Connector Terminal

Voltage

F34

F35

Ground Battery voltage

F36

F37

Is the inspection result normal?
YES >> GO TO 7. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Check the continuity between ignition coil harness connector and ground.

Ignition coil Ground Continuity
Cylinder Connector Terminal

F34

F35

Ground Existed

F36

F37

3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 8. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector. 2. Check the continuity between ECM harness connector and ignition coil harness connector.

Ignition coil

ECM

Continuity

Cylinder Connector Terminal Connector Terminal

F34

F35

F14

Existed

F36

F37

3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 9. NO >> Repair open circuit or short to ground or short to power in harness or connectors.
9.CHECK IGNITION COIL WITH POWER TRANSISTOR

Refer to EC-383, "Component Inspection (Ignition Coil with Power Transistor)".
Is the inspection result normal?
YES >> GO TO 10. NO >> Replace malfunctioning ignition coil with power transistor.
10.CHECK INTERMITTENT INCIDENT

Revision: May 2007

EC-382

2007 Altima Hybrid

< COMPONENT DIAGNOSIS > Refer to GI-42, "Intermittent Incident".

IGNITION SIGNAL

[QR25DE]
A

>> INSPECTION END

Component Inspection (Ignition Coil with Power Transistor)
1.CHECK IGNITION COIL WITH POWER TRANSISTOR-I

EC INFOID:0000000001503132

1. Turn ignition switch OFF.

2. Disconnect ignition coil harness connector.

3. Check resistance between ignition coil terminals as follows.

D
Terminals Resistance [at 25°C (77°F)]

1 and 2

Except 0 or

1 and 3

Except 0

2 and 3

Is the inspection result normal?

YES >> GO TO 2.

NO >> Replace malfunctioning ignition coil with power transistor.

2.CHECK IGNITION COIL WITH POWER TRANSISTOR-II

CAUTION:

Do the following procedure in the place where ventilation is good without the combustible.

1. Turn ignition switch OFF.

2. Remove fuel pump fuse in IPDM E/R to release fuel pressure.

NOTE:

Do not use CONSULT-III to release fuel pressure, or fuel pressure applies again during the following pro-

cedure.

3. Turn ignition switch ON (READY).

4. Depress accelerator pedal and keep it.

5. After engine stalls, check DTC.

If DTC is detected, erase DTC and go to next steps.

If DTC is not detected, go to next steps.

6. Turn ignition switch OFF. 7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.

8. Remove ignition coil and spark plug of the cylinder to be checked.

9. Repeat steps 3 to 5 for two or three times to remove combustion gas in the cylinder.

10. Connect spark plug and harness connector to ignition coil.

11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -

0.66 in) between the edge of the spark plug and grounded metal

portion as shown in the figure. 12. Turn ignition switch ON (READY).

13. Depress accelerator pedal for about 3 seconds, and check

whether spark is generated between the spark plug and the

grounded metal portion.

Spark should be generated.

CAUTION:

· Do not approach to the spark plug and the ignition coil

JMBIA0066GB

within 50 cm (19.7 in). Be careful not to get an electrical

shock while checking, because the electrical discharge voltage becomes 20kV or more.

· It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken.

NOTE:

When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal-

functioning.

Is the inspection result normal?

YES >> INSPECTION END NO >> Replace malfunctioning ignition coil with power transistor.

Revision: May 2007

EC-383

2007 Altima Hybrid

IGNITION SIGNAL
< COMPONENT DIAGNOSIS >
Component Inspection (Condenser-2)
1.CHECK CONDENSER-2
1. Turn ignition switch OFF. 2. Disconnect condenser-2 harness connector. 3. Check resistance between condenser-2 terminals as follows.

Terminals

Resistance

1 and 2 Above 1 M [at 25°C (77°F)]

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace condenser-2.

[QR25DE]
INFOID:0000000001503133

Revision: May 2007

EC-384

2007 Altima Hybrid

MALFUNCTION INDICATOR LAMP
< COMPONENT DIAGNOSIS >
MALFUNCTION INDICATOR LAMP
Description
The Malfunction Indicator Lamp (MIL) is located on the combination meter. The MIL will light up when the ignition switch is turned ON without the engine running. This is a bulb check. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagnostic system has detected an engine system malfunction. For details, refer to EC-385, "Diagnosis Procedure".

[QR25DE]
A
INFOID:0000000001503134
EC
C
D

Component Function Check

SEF217U

INFOID:0000000001503135

1.CHECK MIL FUNCTION

1. Turn ignition switch ON. 2. Make sure that MIL lights up. Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-385, "Diagnosis Procedure".
Diagnosis Procedure

G
H
INFOID:0000000001503136

1.CHECK DTC

Check that DTC U1000 or U1001 is not displayed.

Is the inspection result normal?

YES >> GO TO 2.

NO >> Perform trouble diagnosis for DTC U1000, U1001. Refer to EC-128, "Diagnosis Procedure".

2.CHECK DTC WITH COMBINATION METER K

Refer to MWI-47, "DTC Index".

Is the inspection result normal?

YES >> GO TO 3.

NO >> Repair or replace.

3.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

Is the inspection result normal?

YES >> Replace combination meter. NO >> Repair or replace.

Revision: May 2007

EC-385

2007 Altima Hybrid

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
< COMPONENT DIAGNOSIS >
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Description

[QR25DE]
INFOID:0000000001503137

PBIB1068E
From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere. When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged during driving.
WARNING: When conducting inspections below, be sure to observe the following: · Put a "CAUTION: FLAMMABLE" sign in workshop. · Do not smoke while servicing fuel system. Keep open flames and sparks away from work area. · Be sure to furnish the workshop with a CO2 fire extinguisher. CAUTION: · Before removing fuel line parts, carry out the following procedures: - Put drained fuel in an explosion-proof container and put lid on securely. - Release fuel pressure from fuel line. Refer to EC-450, "Inspection". - Disconnect battery ground cable. · Always replace O-ring when the fuel gauge retainer is removed. · Do not kink or twist hose and tube when they are installed. · Do not tighten hose and clamps excessively to avoid damaging hoses. · After installation, run engine and check for fuel leaks at connection. · Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.

Component Function Check

INFOID:0000000001503138

1.CHECK ORVR FUNCTION

Check whether the following symptoms are present. · Fuel odor from EVAP canister is strong. · Cannot refuel/Fuel odor from the fuel filler opening is strong while refueling.
Is any symptom present?
YES >> Go to EC-386, "Diagnosis Procedure". NO >> INSPECTION END

Diagnosis Procedure

INFOID:0000000001503139

1.INSPECTION START

Check whether the following symptoms are present. A: Fuel odor from EVAP canister is strong.

Revision: May 2007

EC-386

2007 Altima Hybrid

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

< COMPONENT DIAGNOSIS >

B: Cannot refuel/Fuel odor from the fuel filler opening is strong while refueling.

Which symptom is present?

>> GO TO 2.

>> GO TO 7.

2.CHECK EVAP CANISTER

[QR25DE]
A EC

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached. 2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached.

The weight should be less than 2.8 kg (6.2 lb).

Is the inspection result normal?

YES >> GO TO 3.

NO >> GO TO 4.

3.CHECK IF EVAP CANISTER SATURATED WITH WATER

Check if water will drain from EVAP canister.

Does water drain from the EVAP canister?

YES >> GO TO 4.

NO >> GO TO 6.

4.REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.

ALBIA0158ZZ
I
J
K

>> Repair or replace EVAP hose.
6.CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to EC-389, "Component Inspection".

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace refueling EVAP vapor cut valve with fuel tank.

7.CHECK EVAP CANISTER

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached.

The weight should be less than 2.8 kg (6.2 lb).

Is the inspection result normal?

YES >> GO TO 8. NO >> GO TO 9.
8.CHECK IF EVAP CANISTER SATURATED WITH WATER

Revision: May 2007

EC-387

2007 Altima Hybrid

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
< COMPONENT DIAGNOSIS > Check if water will drain from EVAP canister. Does water drain from the EVAP canister?
YES >> GO TO 9. NO >> GO TO 11.

[QR25DE]

9.REPLACE EVAP CANISTER
Replace EVAP canister with a new one.

ALBIA0158ZZ

>> GO TO 10.
10.DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.

>> Repair or replace EVAP hose.
11.CHECK VENT HOSES AND VENT TUBES
Check hoses and tubes between EVAP canister and refueling control valve for clogging, kink, looseness and improper connection.
Is the inspection result normal?
YES >> GO TO 12. NO >> Repair or replace hoses and tubes.
12.CHECK FILLER NECK TUBE
Check recirculation line for clogging, dents and cracks.
Is the inspection result normal?
YES >> GO TO 13. NO >> Replace filler neck tube.
13.CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-389, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 14. NO >> Replace refueling EVAP vapor cut valve with fuel tank.
14.CHECK FUEL FILLER TUBE
Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.
Is the inspection result normal?
YES >> GO TO 15. NO >> Replace fuel filler tube.
15.CHECK ONE-WAY FUEL VALVE-I
Check one-way valve for clogging.
Is the inspection result normal?
YES >> GO TO 16. NO >> Repair or replace one-way fuel valve with fuel tank.
16.CHECK ONE-WAY FUEL VALVE-II
1. Make sure that fuel is drained from the tank. 2. Remove fuel filler tube and hose.

Revision: May 2007

EC-388

2007 Altima Hybrid

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
< COMPONENT DIAGNOSIS >
3. Check one-way fuel valve for operation as follows. When a stick is inserted, the valve should open, when removing stick it should close. Do not drop any material into the tank.
Is the inspection result normal?
YES >> INSPECTION END NO >> Replace fuel filler tube or replace one-way fuel valve
with fuel tank.

[QR25DE]
A EC
C

Component Inspection

SEF665U
D
INFOID:0000000001503140

1.INSPECTION START E Do you have CONSULT-III?

Do you have CONSULT-III?

YES >> GO TO 2.

NO >> GO TO 3.

2.CHECK REFUELING EVAP VAPOR CUT VALVE

G With CONSULT-III

1. Remove fuel tank. Refer to FL-11, "Removal and Installation".

2. Drain fuel from the tank as follows:

- Remove fuel feed hose located on the fuel gauge retainer.

- Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other

side to a fuel container.

- Drain fuel using "FUEL PUMP RELAY" in "ACTIVE TEST" mode with CONSULT-III.

3. Check refueling EVAP vapor cut valve for being stuck to close as follows.

Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that

the air flows freely into the tank.

4. Check refueling EVAP vapor cut valve for being stuck to open as follows.

- Connect vacuum pump to hose end.

- Remove fuel gauge retainer with fuel gauge unit.

Always replace O-ring with new one.

- Put fuel tank upside down.

- Apply vacuum pressure to hose end [-13.3 kPa (-0.136 kg/cm3, -1.93 psi)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace refueling EVAP vapor cut valve with fuel tank.
3.CHECK REFUELING EVAP VAPOR CUT VALVE

Revision: May 2007

EC-389

P
BBIA0248E
2007 Altima Hybrid

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
< COMPONENT DIAGNOSIS >

[QR25DE]

Without CONSULT-III 1. Remove fuel tank. Refer to FL-11, "Removal and Installation". 2. Drain fuel from the tank as follows: - Remove fuel gauge retainer. - Drain fuel from the tank using a handy pump into a fuel container. 3. Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that the air flows freely into the tank. 4. Check refueling EVAP vapor cut valve for being stuck to open as follows. - Connect vacuum pump to hose end. - Remove fuel gauge retainer with fuel gauge unit. Always replace O-ring with new one. - Put fuel tank upside down. - Apply vacuum pressure to hose end [-13.3 kPa (-0.136 kg/cm3, -1.93 psi)] with fuel gauge retainer remaining open and check that the pressure is applicable.

Is the inspection result normal?
YES >> INSPECTION END NO >> Replace refueling EVAP vapor cut valve with fuel tank.

BBIA0248E

Revision: May 2007

EC-390

2007 Altima Hybrid

POSITIVE CRANKCASE VENTILATION
< COMPONENT DIAGNOSIS >
POSITIVE CRANKCASE VENTILATION
Description

[QR25DE]
A
INFOID:0000000001503141
EC

PBIB0492E

This system returns blow-by gas to the intake manifold.

The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake

manifold.

During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV

valve.

Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.

The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes

through the hose connecting air inlet tubes to rocker cover.

Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.

The flow goes through the hose connection in the reverse direction.

On vehicles with an excessively high blow-by, the valve does not

meet the requirement. This is because some of the flow will go

through the hose connection to the air inlet tubes under all condi-

tions.

Component Inspection
1.CHECK PCV VALVE
With engine running at idle, remove PCV valve from rocker cover. A properly working valve makes a hissing noise as air passes through it. A strong vacuum should be felt immediately when a finger is placed over valve inlet. Is the inspection result normal?
YES >> INSPECTION END NO >> Replace PCV valve.

M
PBIB1588E

INFOID:0000000001503142

Revision: May 2007

EC-391

PBIB1589E
2007 Altima Hybrid

REFRIGERANT PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
REFRIGERANT PRESSURE SENSOR

[QR25DE]

Description

INFOID:0000000001503143

The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent to ECM, and ECM controls cooling fan system.

PBIB2657E

Component Function Check

INFOID:0000000001503144

1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION

1. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and warm up engine to normal operating temperature.
2. Turn A/C switch and blower fan switch ON. 3. Check the voltage between ECM harness connector and ground.

Connector

ECM Terminal

Ground Voltage

E219

39 (Refrigerant pressure sensor signal)

Ground

1.0 - 4.0V

Is the inspection result normal?
YES >> INSPECTION END NO >> Go to EC-392, "Diagnosis Procedure".

Diagnosis Procedure

1.CHECK GROUND CONNECTION

1. Turn A/C switch and blower fan switch OFF. 2. Turn ignition switch OFF. 3. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2. NO >> Repair or replace ground connection.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connector. 2. Turn ignition switch ON. 3. Check the voltage between refrigerant pressure sensor harness connector and ground.

INFOID:0000000001503145

Refrigerant pressure sensor Ground
Connector Terminal

Voltage

E219

Ground Approx. 5V

Is the inspection result normal?
YES >> GO TO 4. NO >> GO TO 3.

Revision: May 2007

EC-392

2007 Altima Hybrid

REFRIGERANT PRESSURE SENSOR
< COMPONENT DIAGNOSIS >
3.DETECT MALFUNCTIONING PART
Check the following. · Harness connectors F82, E78 · Harness for open or short between ECM and refrigerant pressure sensor

[QR25DE]
A EC

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec- D
tor.

Refrigerant pressure sensor

ECM

Continuity

Connector Terminal Connector Terminal

E219

F13

Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 6.

NO >> GO TO 5.

5.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors F82, E78

· Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between ECM harness connector and refrigerant pressure sensor harness connec-

tor.

Refrigerant pressure sensor

ECM

Continuity

Connector Terminal Connector Terminal

E219

F13

Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 8.

NO >> GO TO 7.

7.DETECT MALFUNCTIONING PART

Check the following.

· Harness connectors F82, E78

· Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".
Is the inspection result normal?
YES >> Replace refrigerant pressure sensor. NO >> Repair or replace.

Revision: May 2007

EC-393

2007 Altima Hybrid

< ECU DIAGNOSIS >
ECU DIAGNOSIS
ECM
Reference Value

ECM

[QR25DE]
INFOID:0000000001503146

VALUES ON THE DIAGNOSIS TOOL
NOTE: · Specification data are reference values. · Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations. i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in spite of the ignition timing not being adjusted to the specification data. this IGN TIMING monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and other ignition timing related sensors. · If necessary, activate "INSPECTION MODE 1" (HBC-103).

Monitor Item ENG SPEED MAS A/F SE-B1 B/FUEL SCHDL A/F ALPHA-B1 COOLAN TEMP/S A/F SEN1 (B1)
HO2S2 (B1)
HO2S3 (B1)
HO2S2 MNTR (B1)
VHCL SPEED SE BATTERY VOLT TP SEN 1-B1
TP SEN 2-B1* FUEL T/TMP SE INT/A TEMP SE EVAP SYS PRES FUEL LEVEL SE START SIGNAL

Condition

Values/Status

SeeEC-11, "BASIC INSPECTION : Special Repair Requirement".

See EC-110, "Diagnosis Procedure".

· Engine: After warming up

More than 70°C (158°F)

· Engine: After warming up

Maintaining engine speed at 2,500 rpm Fluctuates around 2.2 V

· Revving engine from idle up to 2,500 rpm quickly after the following conditions are met.
- Engine: After warming up - Driving for 3 minutes at a speed of 80 km/h (50 MPH) or more
(Keep the vehicle speed as steady as possible during the cruising.)

0 - 0.3V Approx. 0.6 1.0V

· Engine running after the following conditions are met. - Engine: After warming up - Driving for 3 minutes at a speed of 80 km/h (50 MPH) or more
(Keep the vehicle speed as steady as possible during the cruising.)

0 - 1.0V

LEAN RICH

· Turn drive wheels and compare CONSULT-III value with the speedometer in- Almost the same speed as

dication.

speedometer indication

· Ignition switch: ON (Engine stopped)

11 14V

· Ignition switch: ON · Selector lever: D

Accelerator pedal: Fully released Accelerator pedal: Fully depressed

More than 0.36V Less than 4.75V

· Ignition switch: ON · Selector lever: D

Accelerator pedal: Fully released Accelerator pedal: Fully depressed

More than 0.36V Less than 4.75V

· Ignition switch: ON

Indicates fuel tank temperature

· Ignition switch: ON

Indicates intake air temperature

· Ignition switch: ON

Approx. 1.8 4.8V

· Ignition switch: ON

Depending on fuel level of fuel tank

· INSPECTION MODE · Ignition switch: ON ON (READY)

OFF ON OFF

Revision: May 2007

EC-394

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Monitor Item

Condition

Values/Status

ENG POWER RQST: 0 kW

CLSD THL POS

· Ignition switch: ON (READY)

ENG POWER RQST: Except 0 kW

OFF

Air conditioner switch: OFF

OFF

AIR COND SIG

· Ignition switch: ON (READY)

Air conditioner switch: ON (Compressor operates.)

Selector lever: P or N

P/N POSI SW

· Ignition switch: ON

Selector lever: Except above

OFF

PW/ST SIGNAL

· Ignition switch: ON

OFF

Rear window defogger switch: ON and/or Lighting switch: 2nd position

LOAD SIGNAL

· Ignition switch: ON

Rear window defogger switch and lighting switch: OFF

OFF

IGNITION SW

· Ignition switch: ON OFF ON

ON OFF ON

Heater fan switch: ON

HEATER FAN SW · Ignition switch: ON (READY)

Heater fan switch: OFF

OFF

Brake pedal: Fully released

OFF

BRAKE SW

· Ignition switch: ON

Brake pedal: Slightly depressed

INJ PULSE-B1 IGN TIMING

· Engine: After warming up · Selector lever: P · No load
· Engine: After warming up · Selector lever: N

Idle 2,500 rpm Idle

2.0 3.0 msec

1.9 2.9 msec

11° 21° BTDC

CAL/LD VALUE

· Engine: After warming up · Selector lever: P · No load

Idle 2,500 rpm

10% 35%

MASS AIRFLOW

· Engine: After warming up · Selector lever: P · No load

Idle 2,500 rpm

1.0 5.0 g·m/s

4.0 12.0 g·m/s

PURG VOL C/V

· Engine: After warming up · 150 seconds or more after turning
ignition switch ON (READY)

Vehicle speed: 0 km/h (0 MPH)
Vehicle speed: 70 km/h (43 MPH) or more (Accelerator pedal: Depressed)

0% 20% 90%

· Engine: After warming up

INT/V TIM (B1)

· Selector lever: P

Idle

· No load

Approx. 20° 30°CA

· Engine: After warming up

INT/V SOL (B1)

· Selector lever: P

Idle

· No load

Approx. 50% 60%

FUEL PUMP RLY

· For 1 seconds after turning ignition switch: ON · Engine running or cranking
· Except above

ON
N
OFF

VENT CONT/V THRTL RELAY

· Ignition switch: ON · Ignition switch: ON

OFF

· Engine speed: Below 3,600 rpm after the following conditions are met.

HO2S2 HTR (B1)

- Engine: Running after warming up - Driving for 3 minutes at a speed of 80 km/h (50 MPH) or more

(Keep the vehicle speed as steady as possible during the cruising.)

· Engine speed: Above 3,600 rpm

OFF

Revision: May 2007

EC-395

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Monitor Item

Condition

Values/Status

· Engine speed: Below 3,600 rpm after the following conditions are met.

HO2S3 HTR (B1)

- Engine: Running after warming up - Driving for 3 minutes at a speed of 80 km/h (50 MPH) or more

(Keep the vehicle speed as steady as possible during the cruising.)

· Engine speed: Above 3,600 rpm

OFF

VEHICLE SPEED

· Turn drive wheels and compare CONSULT-III value with the speedometer in- Almost the same speed as

dication.

the speedometer indication

IDL A/V LEARN

· Engine: running

Idle air volume learning has not been performed yet.

YET

Idle air volume learning has already been performed successfully.

CMPLT

TRVL AFTER MIL · Ignition switch: ON

Vehicle has traveled after MIL has turned 0 65,535 km

ON.

(0 40,723 miles)

A/F S1 HTR (B1)

· Engine: After warming up, idle the engine (More than 140 seconds after starting engine.)

4 100%

AC PRESS SEN

· Engine: Idle · Both A/C switch and blower fan switch: ON (Compressor operates)

1.0 4.0V

VHCL SPEED SE

· Turn drive wheels and compare CONSULT-III value with the speedometer in- Almost the same speed as

dication.

the speedometer indication

SET VHCL SPD

· Engine: Running

ASCD: Operating

The preset vehicle speed is displayed

MAIN SW

· Ignition switch: ON

MAIN switch: Pressed MAIN switch: Released

ON OFF

CANCEL SW

· Ignition switch: ON

CANCEL switch: Pressed CANCEL switch: Released

ON OFF

RESUME/ACC SW · Ignition switch: ON

RESUME/ACCELERATE switch: Pressed
RESUME/ACCELERATE switch: Released

ON OFF

SET SW

· Ignition switch: ON

SET/COAST switch: Pressed SET/COAST switch: Released

ON OFF

BRAKE SW1 (ASCD brake switch)

· Ignition switch: ON

Brake pedal: Fully released Brake pedal: Slightly depressed

ON OFF

BRAKE SW2 (Stop lamp switch)

· Ignition switch: ON

Brake pedal: Fully released Brake pedal: Slightly depressed

OFF ON

VHCL SPD CUT

· Ignition switch: ON

NON

LO SPEED CUT

· Ignition switch: ON

NON

AT OD MONITOR · Ignition switch: ON

OFF

AT OD CANCEL

· Ignition switch: ON

OFF

CRUISE LAMP

· Ignition switch: ON

MAIN switch: Pressed at the 1st time at the 2nd time

ON OFF

SET LAMP

· Ignition switch: ON

OFF

A/F ADJ B1

· Engine: running

-0.330 0.330

FAN DUTY

· Engine: Running

0 100%

ACCEL PEDAL POSI · Ignition switch: ON

Depending on accelerator pedal position

ENG POWER RQST · Ignition switch: ON (READY)

Depending on signals from Hybrid vehicle control ECU

ENG SPEED RQST · Ignition switch: ON (READY)

Depending on signals from Hybrid vehicle control ECU

Revision: May 2007

EC-396

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Monitor Item
CATALYST TEMPB1

Condition · Engine: Running after warming up

Values/Status
A
More than 360°C (680°F)

ENG START RQST · Ignition switch: ON (READY)

Depending on signals from
Hybrid vehicle control ECU EC

ENG IDLE RQST ENG F/C RQST

· Ignition switch: ON (READY) · Ignition switch: ON (READY)

Depending on signals from

Hybrid vehicle control ECU

Depending on signals from

Hybrid vehicle control ECU

EVAP LEAK DIAG · Ignition switch: ON

Depending on condition of

EVAP leak diagnosis

EVAP DIAG READY · Ignition switch: ON (READY) ENG START DIAG · Ignition switch: ON (READY)

Depending on ready condi-

tion of EVAP leak diagnosis

Depending on condition of

engine does not start diagno-

sis

ENG ST DIAG RSLT · Ignition switch: ON (READY)

Depending on result of en-

gine does not start diagnosis

*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.

TERMINAL LAYOUT

J
PBIA9221J

PHYSICAL VALUES

K NOTE:

· ECM is located in the engine room left side near inverter with converter assembly.

· Specification data are reference values and are measured between each terminal and ground.

· Pulse signal is measured by CONSULT-III.

· If necessary, activate "INSPECTION MODE 1" (HBC-103).

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- M age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

Terminal No.

Wire color

Description Signal name

Input/ Output

Condition

Value

(Approx.)

Ground

G/W

Throttle control motor relay power supply

Input [Ignition switch: ON]

BATTERY VOLTAGE (11 - 14V)

2.9 - 8.8V

[Engine is running]

· Warm-up condition

4 Ground BR/Y A/F sensor 1 heater

Output · Idle speed

(More than 140 seconds af-

ter starting engine)

JMBIA0082GB

Revision: May 2007

EC-397

2007 Altima Hybrid

< ECU DIAGNOSIS >

Terminal No.

Wire color

Description Signal name

Ground

Throttle control motor (Open)

Ground

Throttle control motor (Close)

L/B Ignition signal No. 3

10 11

Ground

G/R Y/R

Ignition signal No. 2 Ignition signal No. 1

G/Y Ignition signal No. 4

ECM

[QR25DE]

Input/ Output

Condition

Value (Approx.)
0 - 14V

Output

[Ignition switch: ON] · Selector lever: D · Accelerator pedal: Fully de-
pressed

0 - 14V

Output

[Ignition switch: ON] · Selector lever: D · Accelerator pedal: Fully re-
leased

JMBIA0083GB

[Engine is running] · Warm-up condition · Idle speed
NOTE: The pulse cycle changes depending on rpm at idle

0 - 0.2V

Output

0 - 0.3V

JMBIA0084GB JMBIA0085GB

[Engine is running] · Warm-up condition · Engine speed: 2,500 rpm

12 16

Ground

ECM ground

Ground

Heated oxygen sensor 2 heater

-- Output

[Engine is running] · Idle speed
[Engine is running] · Engine speed: Below 3,600
rpm after the following conditions are met - Engine: after warming up - Driving for 3 minutes at a speed of 80 km/h (50 MPH) or more (Keep the vehicle speed as steady as possible during the cruising.)
[Ignition switch: ON] · Engine stopped [Engine is running] · Engine speed: Above 3,600
rpm

Body ground 10V
BATTERY VOLTAGE (11 - 14V)

JMBIA0086GB JMBIA0037GB

Revision: May 2007

EC-398

2007 Altima Hybrid

< ECU DIAGNOSIS >

Terminal No.

Wire color

Description Signal name

14 Ground B/R Fuel pump relay

15 Ground O Throttle control motor relay

Ground

Heated oxygen sensor 3 heater

Ground

W/B

ECM relay (Self shut-off)

ECM

[QR25DE]

Input/ Output

Condition

Value

(Approx.)

[Ignition switch: ON]

· For 1 second after turning ignition switch ON

0 - 1.0V

Output [Engine is running]

[Ignition switch: ON] · More than 1 second after
turning ignition switch ON

BATTERY VOLTAGE (11 - 14V)

0 - 1.0V

[Ignition switch: ON OFF] Output

BATTERY VOLTAGE (11 - 14V)

[Ignition switch: ON]

0 - 1.0V

[Engine is running]

· Engine speed: Below 3,600 10V rpm after the following con-

ditions are met

- Engine: after warming up

- Driving for 3 minutes at a

speed of 80 km/h (50 MPH)

Output

or more (Keep the vehicle speed as

steady as possible during

the cruising.)

F
G
H
JMBIA0037GB

[Engine is running]

· Engine speed: Above 3,600 BATTERY VOLTAGE

rpm

(11 - 14V)

[Ignition switch: ON]
J
[Engine is running]

[Ignition switch: OFF] · A few seconds after turning

0 - 1.0V

ignition switch OFF

Output

[Ignition switch: OFF]

· More than a few seconds af- BATTERY VOLTAGE

ter turning ignition switch (11 - 14V)

OFF

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

· Idle speed

Ground

P/L

EVAP canister purge volume control solenoid valve

Output

JMBIA0087GB

BATTERY VOLTAGE

[Engine is running]

(11 - 14V)

· 150 seconds or more after

turning ignition switch ON

(READY)

· Vehicle speed: 70 km/h

(43MPH) or more · Accelerator pedal: De-

pressed

JMBIA0088GB

Revision: May 2007

EC-399

2007 Altima Hybrid

< ECU DIAGNOSIS >

Terminal No.

Wire color

Description Signal name

LG/R Fuel injector No. 4

30 31

Ground

R/Y R/W

Fuel injector No. 3 Fuel injector No. 2

R/B Fuel injector No. 1

ECM

[QR25DE]

Input/ Output

Condition

Value (Approx.)

[Engine is running] · Warm-up condition · Idle speed
NOTE: The pulse cycle changes depending on rpm at idle

BATTERY VOLTAGE (11 - 14V)

Output

BATTERY VOLTAGE (11 - 14V)

JMBIA0089GB

[Engine is running] · Warm-up condition · Engine speed: 2,500 rpm

33 Ground LG Heated oxygen sensor 2

34 Ground W/L Heated oxygen sensor 3

Sensor ground 35 Ground B/Y (Heated oxygen sensor 2,
Heated oxygen sensor 3)

Ground

Sensor ground (Throttle position sensor)

37 Ground W Throttle position sensor 1

Input
Input -- --
Input

[Engine is running] · Revving engine from idle to
2,500 rpm quickly after the following conditions are met - Engine: after warming up - Driving for 3 minutes at a speed of 80 km/h (50 MPH) or more (Keep the vehicle speed as steady as possible during the cruising.)

0 - 1.0V

[Engine is running] · Engine running after the fol-
lowing conditions are met - Engine: after warming up - Driving for 3 minutes at a
speed of 80 km/h (50 MPH) or more (Keep the vehicle speed as steady as possible during the cruising.)

0 - 1.0V

[Engine is running]

· Warm-up condition

· Idle speed

[Engine is running]

· Warm-up condition

· Idle speed

[Ignition switch: ON] · Selector lever: D · Accelerator pedal: Fully re-
leased

More than 0.36V

[Ignition switch: ON] · Selector lever: D · Accelerator pedal: Fully de-
pressed

Less than 4.75V

JMBIA0090GB

Revision: May 2007

EC-400

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Terminal No.

Wire color

Description Signal name

Input/ Output

Condition

Value

(Approx.)

[Ignition switch: ON]

· Selector lever: D · Accelerator pedal: Fully re-

Less than 4.75V

leased

38 Ground R Throttle position sensor 2

Input

[Ignition switch: ON]

· Selector lever: D · Accelerator pedal: Fully de-

More than 0.36V

pressed
D
[Engine is running]

· Warm-up condition

39 Ground R Refrigerant pressure sensor Input · Both A/C switch and blower 1.0 - 4.0V

fan motor switch: ON (Com-

pressor operates)

Sensor ground

[Engine is running]

40 Ground G (Refrigerant pressure sen-

-- · Warm-up condition

sor)

· Idle speed

45 Ground B/W A/F sensor 1 (bank 1)

Input [Ignition switch: ON]

2.2V

Ground

Engine coolant temperature sensor

Input [Engine is running]

0 - 4.8V

Output voltage varies with engine

coolant temperature.

Ground

Sensor power supply (Throttle position sensor)

-- [Ignition switch: ON]

49 Ground L A/F sensor 1

[Engine is running]

1.8V

Input · Warm-up condition

Output voltage varies with air fuel

· Engine speed: 2,500 rpm ratio.

Ground

L/Y

Intake air temperature sensor

Input [Engine is running]

0 - 4.8V

Output voltage varies with intake

air temperature.

Sensor ground

[Engine is running]

52 Ground LG (Engine coolant temperature -- · Warm-up condition

sensor)

· Idle speed

Sensor ground

[Engine is running]

56 Ground G/B (Mass air flow sensor, Intake -- · Warm-up condition

air temperature sensor)

· Idle speed

[Engine is running]

· Warm-up condition · Selector lever: N

0.9 - 1.2V

· Idle speed

58 Ground O Mass air flow sensor

Input

[Engine is running]

· Warm-up condition · Selector lever: P · Engine speed: 2,500 rpm

1.5 - 1.8V

Sensor power supply

59 Ground G/W [Camshaft position sensor

-- [Ignition switch: ON]

(PHASE)]

Sensor ground

[Engine is running]

60 Ground Y/B [Crankshaft position sensor

-- · Warm-up condition

(POS)]

· Idle speed

61 Ground W Knock sensor

Input

[Engine is running] · Idle speed

2.5V

Sensor ground

[Engine is running]

64 Ground B/R [Camshaft position sensor

-- · Warm-up condition

(PHASE)]

· Idle speed

Revision: May 2007

EC-401

2007 Altima Hybrid

< ECU DIAGNOSIS >

Terminal No.

Wire color

Description Signal name

Ground

Crankshaft position sensor (POS)

ECM

[QR25DE]

Input/ Output

Condition

Value (Approx.)

[Engine is running] · Warm-up condition · Idle speed
NOTE: The pulse cycle changes depending on rpm at idle

1.0 - 6.0

Input

1.0 - 6.0

JMBIA0091GB

[Engine is running] · Engine speed: 2,500 rpm

Ground

Sensor ground (Knock sensor)

Ground

W/R

Camshaft position sensor (PHASE)

[Engine is running]

-- · Warm-up condition

· Idle speed

[Engine is running] · Warm-up condition · Idle speed
NOTE: The pulse cycle changes depending on rpm at idle

1.0 - 6.0

Input

1.0 - 6.0

[Engine is running] · Engine speed is 2,500 rpm

JMBIA0092GB JMBIA0093GB

Sensor power supply 72 Ground LG/B (Refrigerant pressure sen-
sor)

-- [Ignition switch: ON]

73 Ground BR CAN communication line

Input/ Output

74 Ground Y CAN communication line

Input/ Output

Sensor power supply 76 Ground R/G [Crankshaft position sensor
(POS)]

-- [Ignition switch: ON]

Ground

W/L

Power supply for ECM (Back-up)

Input [Ignition switch: OFF]

JMBIA0094GB
5V
-- --
5V BATTERY VOLTAGE (11 - 14V)

Revision: May 2007

EC-402

2007 Altima Hybrid

< ECU DIAGNOSIS >

Terminal No.

Wire color

ECM

Description Signal name

Input/ Output

Condition

Ground

R/L

Intake valve timing control solenoid valve

Output

[Engine is running] · Warm-up condition · Idle speed

[QR25DE]

Value

(Approx.)

7 - 10V

[Ignition switch: ON] · ASCD steering switch: OFF

JMBIA0095GB

[Ignition switch: ON] · MAIN switch: Pressed

85 Ground G/Y ASCD steering switch

Input

[Ignition switch: ON] · CANCEL switch: Pressed

[Ignition switch: ON]

· RESUME/ACCELERATE 3V

switch: Pressed

[Ignition switch: ON]

· SET/COAST switch:

Pressed

Ground

EVAP control system pressure sensor

Input [Ignition switch: ON]

1.8 - 4.8V

88 Ground W Data link connector

Input/ Output

Sensor power supply 91 Ground BR/L (EVAP control system pres-
sure sensor)

-- [Ignition switch: ON]

Ground

Sensor ground (ASCD steering switch)

[Engine is running] -- · Warm-up condition
· Idle speed

93 Ground L/Y Ignition switch

Input

[Ignition switch: OFF] [Ignition switch: ON]

Ground

R/Y

Fuel tank temperature sensor

Input [Engine is running]

Sensor ground 96 Ground V (EVAP control system pres-
sure sensor)

[Engine is running] -- · Warm-up condition
· Idle speed

97 Ground P CAN communication line

Input/ Output

5V
J

K
0V

BATTERY VOLTAGE

(11 - 14V)

0 - 4.8V

Output voltage varies with fuel

tank temperature.
M

N
--

98 Ground L CAN communication line

Input/ Output

0 - 14V

[Engine is running]

· Warm-up condition

Ground

Engine speed signal output

Output

· Idle speed NOTE:

The pulse cycle changes depending on rpm at idle

JMCIA0009GB

Revision: May 2007

EC-403

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Terminal No.

Wire color

Description Signal name

Input/ Output

Condition

Value (Approx.)

103 Ground L Engine TDC signal output

Output

[Engine is running] · Warm-up condition · Idle speed
NOTE: The pulse cycle changes depending on rpm at idle

0 - 14V

JMCIA0008GB

Sensor ground

[Engine is running]

104 Ground B/W (Fuel tank temperature sen- -- · Warm-up condition

sor)

· Idle speed

105 Ground R/G Power supply for ECM

Input [Ignition switch: ON]

BATTERY VOLTAGE (11 - 14V)

106 Ground SB Stop lamp switch

Input

[Ignition switch: OFF] · Brake pedal: Fully released
[Ignition switch: OFF] · Brake pedal: Slightly de-
pressed

0V
BATTERY VOLTAGE (11 - 14V)

107 108

Ground

B B

ECM ground

[Engine is running] · Idle speed

Body ground

109

Ground

EVAP canister vent control valve

Output [Ignition switch: ON]

BATTERY VOLTAGE (11 - 14V)

110 Ground G/B ASCD brake switch

Input

[Ignition switch: ON] · Brake pedal: Slightly de-
pressed
[Ignition switch: ON] · Brake pedal: Fully released

0V
BATTERY VOLTAGE (11 - 14V)

111 112

Ground

B B

ECM ground

[Engine is running] · Idle speed

Body ground

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Revision: May 2007

EC-404

2007 Altima Hybrid

ECM
< ECU DIAGNOSIS >
Wiring Diagram -- ENGINE CONTROL SYSTEM --

Revision: May 2007

EC-405

[QR25DE]
INFOID:0000000001503147
A EC
C D E F G H I J K L M N O
ALBWA0029GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-406

ALBWA0030GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-407

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBWA0031GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-408

ALBWA0032GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-409

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBWA0033GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-410

ALBWA0034GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-411

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBWA0035GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-412

ALBWA0036GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-413

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0277GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-414

ALBIA0278GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-415

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0279GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-416

ALBIA0280GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-417

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0281GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-418

ALBIA0282GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-419

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0283GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-420

ALBIA0284GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-421

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0285GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-422

ALBIA0286GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-423

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0287GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-424

ALBIA0288GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-425

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0289GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Revision: May 2007

EC-426

ALBIA0290GB
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Revision: May 2007

EC-427

[QR25DE]
A EC
C D E F G H I J K L M N O
ALBIA0291GB
P
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Fail Safe
DTC RELATED ITEM
Revision: May 2007

EC-428

ALBIA0292GB INFOID:0000000001503148
2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

DTC No. U0293 U0400 U1020 U1021 P0011
P0075 P0101 P0102 P0103 P0117 P0118
P0122 P0123 P0222 P0223 P2135 P0125 P0171 P0172 P0300 P0301 P0302 P0303 P0304 P0335 P0340 P0500 P0605
P0643
P1195

Detected items

Engine operating condition in fail-safe mode

CAN communication

· ECM stops the engine.

· The vehicle drives using the motor.

Intake valve timing control · Engine idling stop is inhibited.

· The signal is not energized to the intake valve timing control solenoid valve and the

valve control does not function.

Intake valve timing control Engine idling stop is inhibited.

solenoid valve

Mass air flow sensor

· Engine idling stop is inhibited.

· Fuel is cut off when engine speed is more than 2,400 rpm.

Engine coolant tempera- · Engine idling stop is inhibited.

ture sensor circuit

· Cooling fan operates while engine is running.

· Engine coolant temperature will be determined by ECM based on the following condi-

tion. CONSULT-III displays the engine coolant temperature decided by ECM.

Condition

Engine coolant temperature decided (CONSULT-III display)

Just as ignition switch is turned ON or START

40°C (104°F)

Approx 4 minutes or more after engine starting

80°C (176°F)

Except as shown above

40 - 80°C (104 - 176°F) (Depends on the time)

Throttle position sensor · Engine idling stop is inhibited.

· The ECM controls the electric throttle control actuator in regulating the throttle opening

in order for the idle position to be within +10 degrees.

The ECM regulates the opening speed of the throttle valve to be slower than the normal

condition. So, the acceleration will be poor.

Engine coolant tempera- Engine idling stop is inhibited.

ture sensor

Fuel injection system

Engine idling stop is inhibited.

Misfire

Engine idling stop is inhibited.

M
Crankshaft position sensor Engine idling stop is inhibited. (POS)

Camshaft position sensor Engine idling stop is inhibited.

(PHASE)

Vehicle speed sensor ECM

When the fail-safe system for vehicle speed sensor is activated, the cooling fan operates

(Highest) while engine is running.

ECM enters various fail-safe mode according to the detected malfunction.

· Engine idling stop is inhibited.

· The engine speed will not rise 2,500 rpm or more.

· ECM stops the electric throttle control actuator control, throttle valve is maintained at a P

fixed opening (approx. 5 degrees) by the return spring.

· ECM deactivates ASCD operation.

Sensor power supply

· Engine idling stop is inhibited. · ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

Engine does not start

· ECM stops the engine according to the fuel cut request signal sent from HV ECU. · The vehicle drives using the motor.

Revision: May 2007

EC-429

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

DTC No. P1196 P1197 P1805
P2100 P2103 P2101 P2118 P2119

Detected items

Engine operating condition in fail-safe mode

Poor engine power

· ECM stops the engine according to the fuel cut request signal sent from HV ECU. · The vehicle drives using the motor.

Fuel run out

· ECM stops the engine according to the fuel cut request signal sent from HV ECU. · The vehicle drives using the motor.

Brake switch

ECM controls the electric throttle control actuator by regulating the throttle opening to a small range. Therefore, acceleration will be poor.

Vehicle condition

Driving condition

When engine is idling

Normal

When accelerating

Poor acceleration

Throttle control motor relay · Engine idling stop is inhibited. · ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.

Electric throttle control function

· Engine idling stop is inhibited. · ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

Throttle control motor

· Engine idling stop is inhibited. · ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

Electric throttle control actuator

(When electric throttle control actuator does not function properly due to the return spring malfunction:) ECM controls the electric throttle actuator by regulating the throttle opening around the idle position. The engine speed will not rise more than 2,000 rpm.

(When throttle valve opening angle in fail-safe mode is not in specified range:) ECM controls the electric throttle control actuator by regulating the throttle opening to 20 degrees or less.

(When ECM detects the throttle valve is stuck open:) · Engine idling stop is inhibited. · The engine speed will not rise 1,150 rpm or more.

DTC Inspection Priority Chart

INFOID:0000000001503149

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.

Revision: May 2007

EC-430

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

Priority

Detected items (DTC)

1 · U0129 U0293 U1020 1022 CAN communication line · U0400 U0418 U1021 U1023 CAN communication · U1000 U1001 CAN communication line · U1010 CAN communication · U1011 CAN communication · P0101 P0102 P0103 Mass air flow sensor · P0112 P0113 P0127 Intake air temperature sensor · P0117 P0118 P0125 Engine coolant temperature sensor · P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor · P0128 Thermostat function · P0181 P0182 P0183 Fuel tank temperature sensor · P0201 - P0204 Fuel injector · P0327 P0328 Knock sensor · P0335 Crankshaft position sensor (POS) · P0340 Camshaft position sensor (PHASE) · P0460 P0461 P0462 P0463 Fuel level sensor · P0500 Vehicle speed sensor · P0605 ECM · P0643 Sensor power supply

2 · P0031 P0032 Air fuel ratio (A/F) sensor 1 heater · P0037 P0038 Heated oxygen sensor 2 heater · P0043 P0044 Heated oxygen sensor 3 heater · P0075 Intake valve timing control solenoid valve · P0130 P0131 P0132 P0133 P2A00 Air fuel ratio (A/F) sensor 1 · P0137 P0138 P0139 Heated oxygen sensor 2 · P0143 P0144 P0145 P0146 Heated oxygen sensor 3 · P0441 EVAP control system purge flow monitoring · P0443 P0444 P0445 EVAP canister purge volume control solenoid valve · P0447 P0448 EVAP canister vent control valve · P0451 P0452 P0453 EVAP control system pressure sensor · P0603 ECM power supply · P1195 Engine does not start · P1196 Poor engine power · P1197 Fuel run out · P1217 Engine over temperature (OVERHEAT) · P1805 Brake switch · P2100 P2103 Throttle control motor relay · P2101 Electric throttle control function · P2118 Throttle control motor

3 · P0011 Intake valve timing control · P0171 P0172 Fuel injection system function · P0300 - P0304 Misfire · P0420 Three way catalyst function · P0456 EVAP control system · P0506 P0507 Idle speed control system · P0AC4 HV ECU MIL ON request · P1148 Closed loop control · P1564 ASCD steering switch · P1572 ASCD brake switch · P1574 ASCD vehicle speed sensor · P2119 Electric throttle control actuator · P2423 HC adsorption catalyst

DTC Index

DTC*1
CONSULT-III GST*2

ECM*3

Items (CONSULT-III screen terms)

SRT code

Trip

U0129

0129

LOST COMM (BRAKE)

U0293

0293

LOST COMM (HV ECU)

Revision: May 2007

EC-431

[QR25DE]
A

G H

INFOID:0000000001503150
P
×:Applicable --: Not applicable

MIL

Reference page

EC-122

EC-123

2007 Altima Hybrid

< ECU DIAGNOSIS >

DTC*1 CONSULT-III
GST*2 U0400 U0418 U1000
U1001 U1010 U1011 U1020 U1021 U1022 U1023

ECM*3
0400 0418 1000*4 1001*4 1010 1011 1020 1021 1022 1023

P0000

0000

P0011 P0031 P0032 P0037 P0038 P0043 P0044 P0075 P0101 P0102 P0103 P0112 P0113 P0117 P0118 P0122 P0123 P0125 P0127 P0128 P0130 P0131 P0132 P0133 P0137 P0138 P0139 P0143 P0144 P0145
Revision: May 2007

0011 0031 0032 0037 0038 0043 0044 0075 0101 0102 0103 0112 0113 0117 0118 0122 0123 0125 0127 0128 0130 0131 0132 0133 0137 0138 0139 0143 0144 0145

ECM

Items (CONSULT-III screen terms)

SRT code

INVALID (HV ECU)

INVALID (BRAKE)

CAN COMM CIRCUIT

CONTROL UNIT (CAN)

LOST COMM (HV ECU)

INVALID (HV ECU)

LOST COMM (BRAKE)

INVALID (BRAKE)

NO DTC IS DETECTED.

FURTHER TESTING

MAY BE REQUIRED.

INT/V TIM CONT-B1

A/F SEN1 HTR (B1)

HO2S2 HTR (B1)

HO2S3 HTR (B1)

INT/V TIM V/CIR-B1

MAF SEN/CIRCUIT-B1

IAT SEN/CIRCUIT-B1

ECT SEN/CIRC

TP SEN 2/CIRC-B1

ECT SENSOR

IAT SENSOR-B1

THERMSTAT FNCTN

A/F SENSOR1 (B1)

HO2S2 (B1)

HO2S3 (B1)

EC-432

[QR25DE]

Trip

MIL

Reference page

EC-124

EC-126

EC-128

EC-129

EC-130

EC-123

EC-124

EC-122

EC-126

Flashing*5

EC-131

EC-135

EC-138

EC-141

EC-144

EC-147

EC-155

EC-162

EC-165

EC-168

EC-171

EC-174

EC-176

EC-178

EC-182

EC-185

EC-188

EC-192

EC-197

EC-204

EC-209

EC-212

EC-215

2007 Altima Hybrid

< ECU DIAGNOSIS >

DTC*1 CONSULT-III
GST*2 P0146 P0171 P0172 P0181 P0182 P0183 P0201 P0202 P0203 P0204 P0222 P0223 P0300 P0301 P0302 P0303 P0304 P0327 P0328 P0335 P0340 P0420 P0441 P0443 P0444 P0445 P0447 P0448 P0451 P0452 P0453 P0456 P0460 P0461 P0462 P0463 P0500 P0506 P0507 P0603 P0605 P0643

ECM*3
0146 0171 0172 0181 0182 0183 0201 0202 0203 0204 0222 0223 0300 0301 0302 0303 0304 0327 0328 0335 0340 0420 0441 0443 0444 0445 0447 0448 0451 0452 0453 0456 0460 0461 0462 0463 0500 0506 0507 0603 0605 0643

Revision: May 2007

ECM

Items (CONSULT-III screen terms)

SRT code

HO2S3 (B1)

FUEL SYS-LEAN-B1

FUEL SYS-RICH-B1

FTT SENSOR

FTT SEN/CIRCUIT

INJECTOR CIRC-CYL1

INJECTOR CIRC-CYL2

INJECTOR CIRC-CYL3

INJECTOR CIRC-CYL4

TP SEN 1/CIRC-B1

MULTI CYL MISFIRE

CYL 1 MISFIRE

CYL 2 MISFIRE

CYL 3 MISFIRE

CYL 4 MISFIRE

KNOCK SEN/CIRC-B1

CKP SEN/CIRCUIT

CMP SEN/CIRC-B1

TW CATALYST SYS-B1

EVAP PURG FLOW/MON

PURG VOLUME CONT/V

VENT CONTROL VALVE

EVAP SYS PRES SEN

EVAP VERY SML LEAK

FUEL LEV SEN SLOSH

FUEL LEVEL SENSOR

FUEL LEVL SEN/CIRC

VEH SPEED SEN/CIRC

ISC SYSTEM

ECM BACK UP/CIRCUIT

ECM

SENSOR POWER/CIRC

EC-433

Trip
2 2 2 2 2 2 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 or 2 1

MIL
× × × × × × -- -- -- -- × × × × × × × -- -- × × × × × × × × × × × × × × × × × × × × × × or -- ×

[QR25DE]

Reference

page

EC-218

EC-221

EC-225

EC-229

EC-232

EC-235

EC-238
F
EC-238

EC-241

EC-241
H
EC-241

EC-247

EC-249

EC-253

EC-257

EC-261

EC-266

EC-271

EC-274

EC-278

EC-282
M
EC-285

EC-289

EC-294

EC-300

EC-301
O
EC-303

EC-303

EC-305

EC-306

EC-308

EC-310

EC-312

EC-314

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

DTC*1
CONSULT-III GST*2

ECM*3

Items (CONSULT-III screen terms)

SRT code

Trip

MIL

Reference page

P0AC4

0AC4

HV ECU MIL REQUEST

EC-316

P1148

1148

CLOSED LOOP-B1

EC-317

P1195

1195

ENGINE NOT START

EC-318

P1196

1196

POOR ENGINE POWER

EC-321

P1197

1197

FUEL RUN OUT

EC-324

P1217

1217

ENG OVER TEMP

EC-325

P1225

1225

CTP LEARNING-B1

EC-329

P1226

1226

CTP LEARNING-B1

EC-331

P1564

1564

ASCD SW

EC-333

P1572

1572

ASCD BRAKE SW

EC-336

P1574

1574

ASCD VHL SPD SEN

EC-342

P1805

1805

BRAKE SW/CIRCUIT

EC-344

P2100

2100

ETC MOT PWR-B1

EC-347

P2101

2101

ETC FNCTN/CIRC-B1

EC-349

P2103

2103

ETC MOT PWR

EC-347

P2118

2118

ETC MOT-B1

EC-353

P2119

2119

ETC ACTR-B1

EC-356

P2135

2135

TP SENSOR-B1

EC-358

P2423

2423

HC ADS CATALYST-B1

EC-361

P2A00

2A00

A/F SENSOR1 (B1)

EC-365

*1: 1st trip DTC No. is the same as DTC No. *2: This number is prescribed by SAE J2012. *3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN. *4: The troubleshooting for this DTC needs CONSULT-III. *5: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to "How to Display SRT Status".

How to Set SRT Code

INFOID:0000000001503151

To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each diagnosis may require a long period of actual driving under various conditions.
WITH CONSULT-III Perform corresponding DTC CONFIRMATION PROCEDURE one by one.
WITHOUT CONSULT-III The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The driving pattern should be performed one or more times to set all SRT codes.

Revision: May 2007

EC-434

2007 Altima Hybrid

< ECU DIAGNOSIS > DRIVING PATTERN

ECM

[QR25DE]
A

JMBIA0461GB
P · The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving
habits, etc. Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the shortest. Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within zone A. *: Normal conditions refer to the following:

Revision: May 2007

EC-435

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

· Sea level

· Flat road

· Ambient air temperature: 20 - 30°C (68 - 86°F)

· Diagnosis is performed as quickly as possible under normal conditions.

Under different conditions [For example: ambient air temperature other than 20 - 30°C (68 - 86°F)], diagno-

sis may also be performed.

Pattern 1:

· The engine is started at the engine coolant temperature of -10 to 35°C (14 to 95°F)

(where the voltage between the ECM terminal 46 and ground is 3.0 - 4.3V).

· The engine must be operated until the engine coolant temperature is greater than 70°C (158°F)

(where the voltage between the ECM terminal 46 and ground is lower than 1.4V).

· The engine is started at the fuel tank temperature of warmer than 0°C (32°F) (where the voltage

between the ECM terminal 95 and ground is less than 4.1V).

Pattern 2:

· When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.

In this case, the time required for diagnosis may be extended.

Pattern 3:

· Operate vehicle following the driving pattern shown in the figure.

· Release the accelerator pedal during decelerating vehicle speed

from 100 km/h (62 MPH) to 0 km/h (0 MPH).

Pattern 4:

· The accelerator pedal must be held very steady during steady-

state driving.

· If the accelerator pedal is moved, the test must be conducted all

over again.

Pattern 5:

· Activate "INSPECTION MODE 1" (HBC-103) to start engine, and

wait at least 2 hours. Then turn ignition switch OFF and wait at least 90 minutes.

JMBIA0462GB

*1: Depress the accelerator pedal until vehicle speed is 100 km/h (62 MPH), then release the accelerator

pedal and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 100

km/h (62 MPH) again.

*2: Checking the vehicle speed with GST is advised.

Suggested Transmission Gear Position Set the selector lever in the D position.

Test Value and Test Limit

INFOID:0000000001503152

The following is the information specified in Service $06 of SAE J1979. The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the maximum or minimum value and is compared with the test value being monitored. These data (test value and test limit) are specified by On Board Monitor ID (OBDMID), Test ID (TID), Unit and Scaling ID to be displayed on the GST screen.

Revision: May 2007

EC-436

2007 Altima Hybrid

< ECU DIAGNOSIS >

ECM

[QR25DE]

Test value and Test

limit

Item

OBDMID

Self-diagnostic test item

DTC

(GST display)
Unit and TID Scaling

Description

P0130

85H

0BH

Minimum sensor output voltage for test cycle

01H

Air fuel ratio (A/F) sensor 1 (Bank 1)

P0130 P0130

86H

0BH

Maximum sensor output voltage for test cycle

8BH

0BH

Difference in sensor output voltage

P2A00 P2A00

89H

84H The amount of shift in air fuel ratio

8AH

84H The amount of shift in air fuel ratio

HO2S

02H

Heated oxygen sensor 2 (Bank 1)

P0137

08H

0CH

Maximum sensor output voltage for test cycle

P0138

07H

0CH

Minimum sensor output voltage for test cycle

P0138

80H

0CH Sensor output voltage

P0139

81H

0CH

Difference in sensor output voltage

P0143

07H

0CH

Minimum sensor output voltage for test cycle

03H

Heated oxygen sensor 3 (Bank 1)

P0144

08H

0CH

Maximum sensor output voltage for test cycle

P0145

81H

0CH

Difference in sensor output voltage

P0146

80H

0CH Sensor output voltage

P0420

80H

01H O2 storage index

CATALYST

21H

Three way catalyst function (Bank1)

P0420 P2423

82H

01H

Switching time lag engine exhaust index value

83H

0CH

Difference in 3rd O2 sensor output voltage

P2423

84H

O2 storage index in HC trap catalyst

EVAP SYSTEM

3CH

EVAP control system (Very small leak)

P0456

80H

05H

Leak area index (for more than 0.02inch)

P0456

81H

FDH

Maximum internal pressure of EVAP system during monitoring

P0456

82H

FDH

Internal pressure of EVAP system at the end of monitoring

41H

A/F sensor 1 heater (Bank 1)

Low Input:P0031 High Input:P0032

81H

0BH

Converted value of Heater electric current to voltage

HO2S HEATER

42H

Heated oxygen sensor 2 (Bank 1)

Low Input:P0037 High Input:P0038

80H

0CH

Converted value of Heater electric current to voltage

43H

Heated oxygen sensor 3 (Bank 1)

P0043

80H

0CH

Converted value of Heater electric current to voltage

Revision: May 2007

EC-437

2007 Altima Hybrid

< ECU DIAGNOSIS >

Item

OBDMID

Self-diagnostic test item

FUEL SYSTEM

81H

Fuel injection system function (Bank 1)

A1H Multiple Cylinder Misfire
MISFIRE A2H No.1 Cylinder Misfire A3H No.2 Cylinder Misfire A4H No.3 Cylinder Misfire A5H No.4 Cylinder Misfire

ECM

[QR25DE]

DTC
Enleanment: P0171
Enrichment: P0172
Enleanment: P0171
Enrichment: P0172 P0301 P0302 P0303 P0304 P0300 P0301 P0302 P0303 P0304
P0301
P0301
P0302
P0302
P0303
P0303
P0304
P0304

Test value and Test limit
(GST display)
Unit and TID Scaling
ID

Description

80H

2FH Long term fuel trim

81H
80H 81H 82H 83H 88H 89H 8AH 8BH 8CH 0BH 0CH 0BH 0CH 0BH 0CH 0BH 0CH

24H

The number of lambda control clamped

24H

Misfiring counter at 1000rev of the first cylinder

24H

Misfiring counter at 1000rev of the second cylinder

24H

Misfiring counter at 1000rev of the third cylinder

24H

Misfiring counter at 1000rev of the fourth cylinder

24H

Misfiring counter at 1000rev of the multiple cylinders

24H

Misfiring counter at 200rev of the first cylinder

24H

Misfiring counter at 200rev of the second cylinder

24H

Misfiring counter at 200rev of the third cylinder

24H

Misfiring counter at 200rev of the fourth cylinder

EWMA (Exponential Weighted 24H Moving Average) misfire counts
for last 10 driving cycles

24H

Misfire counts for last/current driving cycles

EWMA (Exponential Weighted 24H Moving Average) misfire counts
for last 10 driving cycles

24H

Misfire counts for last/current driving cycles

EWMA (Exponential Weighted 24H Moving Average) misfire counts
for last 10 driving cycles

24H

Misfire counts for last/current driving cycles

EWMA (Exponential Weighted 24H Moving Average) misfire counts
for last 10 driving cycles

24H

Misfire counts for last/current driving cycles

Revision: May 2007

EC-438

2007 Altima Hybrid

ENGINE CONTROL SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS >
SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM SYMPTOMS
Symptom Table
SYSTEM -- BASIC ENGINE CONTROL SYSTEM
SYMPTOM

[QR25DE]
A EC INFOID:0000000001503153
C D

HARD/NO START/RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION

Reference

page

Warranty symptom code

H
AA AB AC AD AE AF AG AH AJ AK AL AM

Fuel Fuel pump circuit

11232

EC-376

Fuel pressure regulator system

334444444

EC-450

Fuel injector circuit

11232

EC-235

Evaporative emission system

334444444

Air

Positive crankcase ventilation system

4444444

Incorrect idle speed adjustment

1111

EC-67

J
4 1 EC-391

EC-14

Electric throttle control actuator

112332222

EC-349,

EC-356

Ignition Incorrect ignition timing adjustment

33111

EC-14

Ignition circuit

11222

EC-380

Main power supply and ground circuit

22333

EC-118

Mass air flow sensor circuit Engine coolant temperature sensor circuit
Air fuel ratio (A/F) sensor 1 circuit

EC-147,

EC-155

EC-165, EC-171

EC-178,

EC-182,

EC-185,

EC-188, EC-365

Throttle position sensor circuit

EC-168,

EC-238,

EC-329,

EC-331,

EC-358

Knock sensor circuit

EC-247

Crankshaft position sensor (POS) circuit

EC-249

Camshaft position sensor (PHASE) circuit

EC-253

Revision: May 2007

EC-439

2007 Altima Hybrid

ENGINE CONTROL SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS >
SYMPTOM

[QR25DE]

Reference page

Warranty symptom code

AA AB AC AD AE AF AG AH AJ AK AL AM

ECM

22333333333

EC-310, EC-312

Intake valve timing control solenoid valve circuit

13223

EC-144

Refrigerant pressure sensor circuit

EC-392

Hybrid vehicle control ECU

112

113313

HBC-9

1 - 6: The numbers refer to the order of inspection. (continued on next page)

SYSTEM -- ENGINE MECHANICAL & OTHER

SYMPTOM

Reference page

Warranty symptom code

AA AB AC AD AE AF AG AH AJ AK AL AM

Fuel

Fuel tank

Fuel piping

555

FL-11

EM-34

Vapor lock

Valve deposit

Poor fuel (Heavy weight gasoline, Low 5 octane)

555

-- -- 5 --

Revision: May 2007

EC-440

2007 Altima Hybrid

ENGINE CONTROL SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS >
SYMPTOM

[QR25DE]
A

Reference

page

Warranty symptom code

Air

Air duct

AA AB AC AD AE AF AG AH AJ AK AL AM

EM-23

Air cleaner

EM-23

Air leakage from air duct

(Mass air flow sensor -- electric throttle control actuator)

Electric throttle control actuator

Air leakage from intake manifold/Collector/Gasket

EM-23

EM-24
H
EM-24

Cranking Engine

Signal plate Cylinder head Cylinder head gasket Cylinder block

EM-70

55555

EM-61

Piston

Piston ring Connecting rod

66666

EM-74

Bearing

Crankshaft

Valve mechanism

Timing chain Camshaft Intake valve timing control

55555

EM-50

EM-39

EM-50

Intake valve

Exhaust valve

Exhaust Exhaust manifold/Tube/Muffler/Gasket

Three way catalyst

55555

HC adsorption catalyst

3 EM-61
N

EM-28,

EX-5

Lubrica-

tion

Oil pan/Oil strainer/Oil pump/Oil filter/

Oil gallery/Oil cooler

55555

EM-30,

LU-11,

LU-10,

LU-14

Oil level (Low)/Filthy oil

LU-8

Revision: May 2007

EC-441

2007 Altima Hybrid

ENGINE CONTROL SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS >
SYMPTOM

[QR25DE]

Reference page

Warranty symptom code Cooling Radiator/Hose/Radiator filler cap
Thermostat Water pump Water gallery Cooling fan Coolant level (Low)/Contaminated coolant 1 - 6: The numbers refer to the order of inspection.

AA AB AC AD AE AF AG AH AJ AK AL AM

CO-14

CO-20

55555

CO-18 CO-22

CO-16 5
CO-10

Revision: May 2007

EC-442

2007 Altima Hybrid

NORMAL OPERATING CONDITION
< SYMPTOM DIAGNOSIS >
NORMAL OPERATING CONDITION
Description

[QR25DE]
A
INFOID:0000000001503154

FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)

If the engine speed is above 1,800 rpm under no load (for example, the selector lever position is P and engine

speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies

based on engine speed.

Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.

NOTE:

This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-27,

"System Description".

Revision: May 2007

EC-443

2007 Altima Hybrid

< PRECAUTION >
PRECAUTION
PRECAUTIONS

PRECAUTIONS

[QR25DE]

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT

PRE-TENSIONER"

INFOID:0000000001503155

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the "SRS AIRBAG" and "SEAT BELT" of this Service Manual.
WARNING: · To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. · Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the "SRS AIRBAG". · Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000001503156

When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc.

Precautions For Xenon Headlamp Service

PIIB3706J INFOID:0000000001503157

WARNING: Comply with the following warnings to prevent any serious accident. · Disconnect the battery cable (negative terminal) or the power supply fuse before installing, remov-
ing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage generated parts. · Never work with wet hands. · Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon headlamp ON in other conditions. Connect the power supply to the vehicle-side connector. (Turning it ON outside the lamp case may cause fire or visual impairments.) · Never touch the bulb glass immediately after turning it OFF. It is extremely hot. CAUTION: Comply with the following cautions to prevent any error and malfunction. · Install the xenon bulb securely. (Insufficient bulb socket installation may melt the bulb, the connector, the housing, etc. by high-voltage leakage or corona discharge.) · Never perform HID circuit inspection with a tester. · Never touch the xenon bulb glass with hands. Never put oil and grease on it. · Dispose of the used xenon bulb after packing it in thick vinyl without breaking it. · Never wipe out dirt and contamination with organic solvent (thinner, gasoline, etc.).

Revision: May 2007

EC-444

2007 Altima Hybrid

PRECAUTIONS

< PRECAUTION >

[QR25DE]

On Board Diagnostic (OBD) System of Engine

INFOID:0000000001503158

The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the

driver of a malfunction causing emission deterioration.

CAUTION: · Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair

or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will

cause the MIL to light up.

· Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will C

cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,

dirt, bent terminals, etc.)

· Certain systems and components, especially those related to OBD, may use a new style slide-lock- D ing type harness connector. For description and how to disconnect, refer to PG-59, "Description".

· Be sure to route and secure the harnesses properly after work. The interference of the harness with

a bracket, etc. may cause the MIL to light up due to the short circuit. · Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube E

may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,

etc.

· Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM before F returning the vehicle to the customer.

General Precautions
· Always use a 12 volt battery as power source. · Do not attempt to disconnect battery cables while engine is
running. · Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative battery cable. Failure to do so may damage the ECM because battery voltage is applied to ECM even if ignition switch is turned OFF. · Before removing parts, turn ignition switch OFF and then disconnect battery ground cable.

INFOID:0000000001503159
G
H
I
J

SEF289H

· Do not disassemble ECM. · If a battery cable is disconnected, the memory will return to
the ECM value. The ECM will now start to self-control at its initial value. Engine operation can vary slightly when the terminal is disconnected. However, this is not an indication of a malfunction. Do not replace parts because of a slight variation. · If the battery is disconnected, the following emission-related diagnostic information will be lost within 24 hours. - Diagnostic trouble codes - 1st trip diagnostic trouble codes - Freeze frame data - 1st trip freeze frame data - System readiness test (SRT) codes - Test values

PBIA9222J

Revision: May 2007

EC-445

2007 Altima Hybrid

PRECAUTIONS
< PRECAUTION > · When connecting ECM harness connector (1), fasten (B) it
securely with a lever as far as it will go as shown in the figure.
2. ECM A. Loosen
· When connecting or disconnecting pin connectors into or from ECM, take care not to damage pin terminals (bend or break). Make sure that there are not any bends or breaks on ECM pin terminal, when connecting pin connectors.
· Securely connect ECM harness connectors. A poor connection can cause an extremely high (surge) voltage to develop in coil and condenser, thus resulting in damage to ICs.
· Keep engine control system harness at least 10 cm (4 in) away from adjacent harness, to prevent engine control system malfunctions due to receiving external noise, degraded operation of ICs, etc.
· Keep engine control system parts and harness dry. · Before replacing ECM, perform ECM Terminals and Reference
Value inspection and make sure ECM functions properly. Refer to EC-394, "Reference Value". · Handle mass air flow sensor carefully to avoid damage. · Do not clean mass air flow sensor with any type of detergent. · Do not disassemble electric throttle control actuator. · Even a slight leak in the air intake system can cause serious incidents. · Do not shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS).
· After performing each TROUBLE DIAGNOSIS, perform DTC CONFIRMATION PROCEDURE or Component Function Check. The DTC should not be displayed in the DTC Confirmation Procedure if the repair is completed. The Component Function Check should be a good result if the repair is completed.

[QR25DE]
PBIB2947E PBIB0090E MEF040D SEF217U

Revision: May 2007

EC-446

2007 Altima Hybrid

PRECAUTIONS
< PRECAUTION >
· When measuring ECM signals with a circuit tester, never allow the two tester probes to contact. Accidental contact of probes will cause a short circuit and damage the ECM power transistor.
· Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

· Do not operate fuel pump when there is no fuel in lines. · Tighten fuel hose clamps to the specified torque.
· Do not depress accelerator pedal when starting. · Immediately after starting, do not rev up engine unnecessar-
ily. · Do not rev up engine just prior to shutdown.
· When installing C.B. ham radio or a mobile phone, be sure to observe the following as it may adversely affect electronic control systems depending on installation location.
- Keep the antenna as far as possible from the electronic control units.
- Keep the antenna feeder line more than 20 cm (8 in) away from the harness of electronic controls. Do not let them run parallel for a long distance.
- Adjust the antenna and feeder line so that the standing-wave ratio can be kept smaller.
- Be sure to ground the radio to vehicle body.

Revision: May 2007

EC-447

[QR25DE]
A

G
SEF348N
H

SEF709Y

O
SEF708Y
P

2007 Altima Hybrid

< PREPARATION >
PREPARATION
PREPARATION

PREPARATION

[QR25DE]

Special Service Tools

INFOID:0000000001503160

NOTE: The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name
(J-44626) Air fuel ratio (A/F) sensor wrench

Description Loosening tightening air fuel ratio (A/F) sensor 1

KV10114400 (J-38365) Heated oxygen sensor wrench
(J-44321) Fuel pressure gauge kit

LEM054

Loosening or tightening heated oxygen sensor a: 22 mm (0.87 in)

S-NT636

Checking fuel pressure

Commercial Service Tools
Tool name (Kent-Moore No.) Leak detector i.e.: (J-41416)

LEC642

Description Locating the EVAP leak

INFOID:0000000001503161

EVAP service port adapter i.e.: (J-41413-OBD)
Revision: May 2007

S-NT703

Applying positive pressure through EVAP service port

S-NT704
EC-448

2007 Altima Hybrid

< PREPARATION >
Tool name (Kent-Moore No.) Fuel filler cap adapter i.e.: (MLR-8382)
Socket wrench
Oxygen sensor thread cleaner i.e.: (J-43897-18) (J-43897-12)
Anti-seize lubricant i.e.: (PermatexTM 133AR or equivalent meeting MIL specification MIL-A-907)
Revision: May 2007

PREPARATION

[QR25DE]

Description

Checking fuel tank vacuum relief valve opening pressure
EC

S-NT815 S-NT705 AEM488

Removing and installing engine coolant tempera-

ture sensor

F
Reconditioning the exhaust system threads before
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco- G
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor
H

Lubricating oxygen sensor thread cleaning tool

when reconditioning exhaust system threads.

J
S-NT779
K

EC-449

2007 Altima Hybrid

FUEL PRESSURE
< ON-VEHICLE MAINTENANCE >
ON-VEHICLE MAINTENANCE
FUEL PRESSURE
Inspection

[QR25DE]
INFOID:0000000001503162

FUEL PRESSURE RELEASE
NOTE: If following procedure performed, a certain DTC may be detected.
With CONSULT-III
1. Lift up the vehicle. 2. Turn ignition switch ON (READY). 3. Depress the accelerator pedal and keep it. 4. Shift the selector lever to N position with engine running.
CAUTION: Never leave the selector lever in the N position for a long period of time. In the N position, the engine operates but electricity cannot be generated. 5. Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT-III. 6. After engine stalls, turn ignition switch OFF.
Without CONSULT-III
1. Turn ignition switch OFF. 2. Remove fuel pump fuse located in IPDM E/R. 3. Turn ignition switch ON (READY). 4. Depress the accelerator pedal and keep it. 5. After engine stalls, turn ignition switch OFF. 6. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
CAUTION: Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger. NOTE: · Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because L32 models do not have fuel return system. · Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure. 1. Release fuel pressure to zero. 2. Disconnect the fuel quick connector on the engine side. 3. Install fuel pressure gauge adapter J-44321-6 (B) with fuel pres-
sure gauge (A).

1 : Fuel feed hose
4. Turn ignition switch ON and check for fuel leakage. 5. Check DTC.
If DTC is detected, erase DTC and go to next steps. If DTC is not detected, go to next steps. 6. Activate "INSPECTION MODE 1" (HBC-103) to start engine, and check for fuel leakage. 7. Read the indication of fuel pressure gauge.

ALBIA0159ZZ

At idling : Approximately 350 kPa (3.57 kg/cm2, 51 psi)
8. If result is unsatisfactory, check fuel hoses and fuel tubes for clogging. If OK, Replace "fuel filter and fuel pump assembly". If NG, Repair or replace.

Revision: May 2007

EC-450

2007 Altima Hybrid

< ON-VEHICLE MAINTENANCE >
EVAP LEAK CHECK
Inspection

EVAP LEAK CHECK

[QR25DE]
A
INFOID:0000000001503163

CAUTION: · Do not use compressed air or a high pressure pump. · Do not exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in EVAP system. NOTE: · Do not start engine. · Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.
WITH CONSULT-III
1. To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port.
2. Turn ignition switch ON.
3. Select the "EVAP SYSTEM CLOSE" of "WORK SUPPORT" mode with CONSULT-III.
4. Touch "START". A bar graph (Pressure indicating display) will appear on the screen.
5. Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar graph.
6. Remove EVAP service port adapter and hose with pressure pump.
7. Locate the leak using a leak detector. Refer to EC-67, "System Diagram".

EC C D E F G
SEF462UA
H

WITHOUT CONSULT-III
1. To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port.
2. Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP system.
3. To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm2, 0.2 to 0.4 psi).
4. Remove EVAP service port adapter and hose with pressure pump.

SEF200U

SEF462UA

Revision: May 2007

EC-451

2007 Altima Hybrid

EVAP LEAK CHECK
< ON-VEHICLE MAINTENANCE >
5. Locate the leak using a leak detector. Refer to EC-67, "System Diagram".

[QR25DE]
SEF200U

Revision: May 2007

EC-452

2007 Altima Hybrid

EVAP CANISTER
< ON-VEHICLE REPAIR >
ON-VEHICLE REPAIR
EVAP CANISTER
Exploded View

[QR25DE]
A EC INFOID:0000000001503164

1. EVAP control system pressure sen- 2. EVAP canister (MAIN) sor

4. Hose

5. O-ring

7. EVAP canister (SUB)

3. Bolt

ALBIA0170GB
H

6. EVAP canister vent control valve

Removal and Installation

INFOID:0000000001503165

REMOVAL

1. Lift up the vehicle.

2. Remove EVAP canister fixing bolt.

3. Remove EVAP canister.

NOTE:

The EVAP canister vent control valve and EVAP canister system pressure sensor can be removed without

removing the EVAP canister.

INSTALLATION

Install in the reverse order of removal.

NOTE:

Tighten EVAP canister fixing bolt to the specified torque.

DISASSEMBLY

1. Turn EVAP canister vent control valve counterclockwise. O

A : Lock B : Unlock
P 2. Remove the EVAP canister vent control valve.

Revision: May 2007

EC-453

ALBIA0156ZZ
2007 Altima Hybrid

EVAP CANISTER
< ON-VEHICLE REPAIR > ASSEMBLY Assemble in the reverse order of disassembly. CAUTION: Always replace O-ring with a new one.
Inspection
Check EVAP canister as follows: 1. Block port (B). 2. Blow air into port (A) and check that it flows freely out of port (C). 3. Release blocked port (B). 4. Apply vacuum pressure to port (B) and check that vacuum pres-
sure exists at the ports (A) and (C). 5. Block port (A) and (B). 6. Apply pressure to port (C) and check that there is no leakage.

[QR25DE]
INFOID:0000000001503166
ALBIA0154ZZ

Revision: May 2007

EC-454

2007 Altima Hybrid

SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Idle Speed

[QR25DE]
A EC INFOID:0000000001503167

No load (in N position)
Ignition Timing

Condition

Specification 1,000 ± 50 rpm

C
INFOID:0000000001503168
D

Condition No load (in N position)
Calculated Load Value
Condition At idle At 2,500 rpm
Mass Air Flow Sensor

Specification

21 ± 5° BTDC

INFOID:0000000001503169
F
Specification (Using CONSULT-III or GST) 10 35 %
G
10 35 %

INFOID:0000000001503170
H

Supply voltage

Battery voltage (11 14 V)

Output voltage at idle (in N position)

0.9 1.2 V*

Mass air flow (Using CONSULT-III or GST)

1.0 5.0 g·m/sec at idle* 4.0 12.0 g·m/sec at 2,500 rpm*

*: Engine is warmed up to normal operating temperature and running under no load.

Revision: May 2007

EC-455

2007 Altima Hybrid

Acrobat Distiller 6.0.1 (Windows)