SB-2 PRECAUTIONS Revision: 2005 November 2006 Q45 PRECAUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” NHS0003D The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
SEAT BELTS H RESTRAINTS SB A SECTION B SEAT BELTS C D CONTENTS E PRECAUTIONS ......................................................... 2 Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ................................................................. 2 Precaution for Seat Belt Service ............................. 2 AFTER A COLLISION .......................................... 2 SEAT BELTS ............................................................. 3 System Description ................................................. 3 SEAT BELT WARNING CHIME ........................... 3 SEAT BELT WARNING LAMP ............................. 3 Removal and Installation of Front Seat Belt ............ 3 REMOVAL OF SEAT BELT RETRACTOR ........... 3 INSTALLATION OF SEAT BELT RETRACTOR..... 4 REMOVAL OF SEAT BELT BUCKLE ................... 4 INSTALLATION OF SEAT BELT BUCKLE ........... 4 Removal and Installation of Rear Seat Belt ............ 5 REMOVAL ............................................................ 5 INSTALLATION .................................................... 5 Seat Belt Inspection ................................................ 6 AFTER A COLLISION .......................................... 6 PRELIMINARY CHECKS ..................................... 6 SEAT BELT RETRACTOR ON-VEHICLE CHECK ................................................................. 7 SEAT BELT RETRACTOR OFF-VEHICLE CHECK ................................................................. 8 LATCH (LOWER ANCHORS AND TETHER FOR CHILDREN) SYSTEM ................................................ 9 Removal and Installation ......................................... 9 REMOVAL ............................................................ 9 INSTALLATION .................................................... 9 TOP TETHER STRAP CHILD RESTRAINT ............ 10 Removal and Installation ....................................... 10 REMOVAL .......................................................... 10 INSTALLATION .................................................. 10 PRE-CRASH SEAT BELT ........................................ 11 F Component Parts and Harness Connector Location... 11 System Description ................................................ 11 FUNCTION DESCRIPTION ............................... 12 G FAIL-SAFE MODE .............................................. 12 CAN Communication System Description ............. 13 CAN Communication Unit ...................................... 13 Schematic .............................................................. 14 SB Wiring Diagram -- PSB -- .................................... 15 Terminals and reference value for Pre-Crash Seat Belt Control Unit .................................................... 21 I Work Flow .............................................................. 22 CONSULT-II Function (PRECRASH SEATBELT)... 22 CONSULT-II INSPECTION PROCEDURE ......... 22 J SELF-DIAGNOSIS RESULTS ............................ 23 DATA MONITOR ................................................ 23 Preliminary Check ................................................. 24 K PRE- CRASH SEAT BELT OPERATION INSPECTION ..................................................... 24 Diagnoses Symptom Chart .................................... 24 Check CAN Communication Circuit [U1000] ......... 24 L Check Ignition Power Supply Circuit ..................... 25 Check Motor Power Supply and Ground Circuit [B2454] .................................................................. 25 M Check Seat Belt Buckle Switch (Driver Side) Circui.t.. 27 Check Seat Belt Buckle Switch (Passenger Side) Circuit .................................................................... 28 Check Brake Pedal Stroke Sensor Circuit [B2453]... 30 Check Pre-Crash Seat Belt Motor LH Circuit [B2452] ... 32 Check Pre-Crash Seat Belt Motor RH Circuit [B2451] .................................................................. 33 Check Brake Pedal Stroke Sensor Shield Wire Cir- cuit ......................................................................... 34 Revision: 2005 November SB-1 2006 Q45 PRECAUTIONS PRECAUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" NHS0003D 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 and SB section of this Service Manual. WARNING: q 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. q 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 section. q 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 Seat Belt Service NHS0003E CAUTION: q Before removing the front seat belt pre-tensioner assembly, turn the ignition switch off, discon- nect the both battery cables and wait at least 3 minutes. q Do not use electrical test equipment for front seat belt pre-tensioner connector. q After replacing or reinstalling front seat belt pre-tensioner assembly, or reconnecting front seat belt pre-tensioner connector, check the system function. Refer to SRS-21, "SRS Operation Check" . q Do not use disassemble buckle or seat belt assembly. q Replace anchor bolts if they are deformed or worn out. q Never oil tongue and buckle. q If any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt assembly. q If webbing is cut, frayed, or damaged, replace seat belt assembly. q When replacing seat belt assembly, use a genuine NISSAN seat belt assembly. AFTER A COLLISION WARNING: Inspect all seat belt assemblies including retractors and attaching hardware after any collision. NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the collision was minor and the belts show no damage and continue to operate properly. Failure to do so could result in serious personal injury in an accident. Seat belt assemblies not in use during a collision should also be replaced if either damage or improper operation is noted. Seat belt pre-tensioner should be replaced even if the seat belts are not in use during a frontal collision in which the air bags are deployed. Replace any seat belt assembly (including anchor bolts) if: q The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and buckles show no damage and continue to operate properly). q The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide). q The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage or distortion and repair as necessary before installing a new seat belt assembly. q Anchor bolts are deformed or worn out. q The front seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision in which the air bags are deployed. Revision: 2005 November SB-2 2006 Q45 SEAT BELTS SEAT BELTS System Description SEAT BELT WARNING CHIME PFP:86884 A NHS0003F q With ignition switch turned ON and seat belt unfastened (seat belt switch ON), warning chime will sound B for approximately 6 seconds. q If warning chime does not sound, refer to DI-67, "Seat Belt Buckle Switch Input Signal Inspection" . SEAT BELT WARNING LAMP C q Fasten driver's seat belt. q The seat belt warning lamp should go out. q If the seat belt warning lamp does not go out, refer to DI-31, "Wiring Diagram -- WARN --" . D Removal and Installation of Front Seat Belt NHS0003G E F G SB I J PHIA0686E CAUTION: Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least 3 K minutes. REMOVAL OF SEAT BELT RETRACTOR L 1. Remove the adjuster cover on the seat belt anchor. NOTE: Insert a screwdriver wound with cloth into the slot of the release button to disengage the tab and remove the release button. M 2. Remove the anchor bolts. 3. Remove the outer anchor cover, and remove the anchor bolts. 4. Disconnect the belt tension sensor connector.(passenger side only) 5. Remove the center pillar upper and lower garnish. Refer to EI-43, "Removal and Installation" . SHIA0166E Revision: 2005 November SB-3 2006 Q45 SEAT BELTS 6. Disconnect the seat belt pre-tensioner connector. CAUTION: q For installing/removing seat belt pre-tensioner connector, insert thin screwdriver wrapped in tape into notch, lift lock and remove connector. q Install connector with lock raised, and push lock into connector. 7. Disconnect the tension reducer connector and the pre-crush seat belt connector. 8. Remove the seat belt pre-tensioner retractor fixing screw and anchor bolt, and then remove the seat belt retractor. INSTALLATION OF SEAT BELT RETRACTOR Install in the reverse order of removal. REMOVAL OF SEAT BELT BUCKLE 1. Remove the front seat. Refer to SE-182, "Removal and Installation" . 2. Remove the anchor bolt, and remove the buckle. INSTALLATION OF SEAT BELT BUCKLE Install in the reverse order of removal. PHIA0341E PHIA0773E SHIA0168E Revision: 2005 November SB-4 2006 Q45 SEAT BELTS Removal and Installation of Rear Seat Belt NHS0003H A B C D E F SHIA0169E REMOVAL G 1. Remove the rear seat cushion and seatback. Refer to SE-191, "Removal and Installation" . 2. Remove the rear pillar finisher. Refer to EI-43, "Removal and Installation" . SB 3. Remove the outer and inner anchor bolt. 4. Remove the rear parcel shelf finisher. Refer to EI-48, "Removal and Installation" . 5. Remove seat belt retractor mounting screw and anchor bolt, and remove the seat belt assembly. I INSTALLATION Install in the reverse order of removal. J K L M Revision: 2005 November SB-5 2006 Q45 SEAT BELTS Seat Belt Inspection AFTER A COLLISION NHS0003I WARNING: Inspect all seat belt assemblies including retractors and attaching hardware after any collision. NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the collision was minor and the belts show no damage and continue to operate properly. Failure to do so could result in serious personal injury in an accident. Seat belt assemblies not in use during a collision should also be replaced if either damage or improper operation is noted. Seat belt pre-tensioned should be replaced even if the seat belts are not in use during a frontal collision in which the air bags are deployed. Replace any seat belt assembly (including anchor bolts) if: q The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and buckles show no damage and continue to operate properly). q The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide, etc.) q The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage or distortion and repair as necessary before installing a new seat belt assembly. q Anchor bolts are deformed or worn out. q The seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision in which the air bags are deployed. PRELIMINARY CHECKS 1. Check the seat belt warning lamp/chime for proper operation as follows: a. Switch ignition ON. The seat belt warning lamp should illuminate. Also, the seat belt warning chime should sound for about seven seconds. b. Fasten driver's seat belt. The seat belt warning lamp should go out and the chime (if sounding) should stop. 2. If the air bag warning lamp is blinking, conduct self-diagnosis using CONSULT-II, and air bag warning lamp. Refer to SRS-21, "SRS Operation Check" . 3. Check that the seat belt retractor, seat belt anchor and buckle bolts are securely attached. 4. Check the shoulder seat belt guide and shoulder belt height adjuster for front seats. Ensure guide swivels freely and that webbing lays flat and does not bind in guide. Ensure height adjuster operates properly and holds securely. 5. Check retractor operation: a. Fully extend the seat belt webbing and check for twists, tears or other damage. b. Allow the seat belt to retract. Ensure that webbing returns smoothly and completely into the retractor. If the seat belt does not return smoothly, wipe the inside of the loops with a clean paper cloth. Because dirt built up in the loops of the upper anchors can cause the seat belts to retract slowly. c. Fasten the seat belt. Check the seat belt returns smoothly and completely to the retractor. If the webbing does not return smoothly, the cause may be an accumulation of dust or dirt. Use the "SEAT BELT TAPE SET" and perform the following steps. Inspect the front seat belt though-anchor 1. Pull the seat belt out to a length of 500 mm (19.69 in) or more. 2. Use a clip or other device to the fix the seat belt at the center pillar webbing oping. 3. Pass a thin wire though the though-anchor webbing opening. Hold both ends of the wire and pull taut while moving it up and down several times along the webbing opening surface to move matter stuck there. 4. Any dirt that can not be removed with the wire can be removed by cleaning the opening with a clean cloth. 5. Apply tape at the point where the webbing contacts the though-anchor webbing opening. NOTE: Apply the tape so that there is no looseness or wrinkling. 6. Remove the clip fixing the seat belt and check that the webbing returns smoothly. 6. Repeat steps above as necessary to check the other seat belts. Revision: 2005 November SB-6 2006 Q45 SEAT BELTS SEAT BELT RETRACTOR ON-VEHICLE CHECK Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR) A NOTE: All seat belt retractors are of the Emergency Locking Retractors (ELR) type. In an emergency (sudden stop) the retractor will lock and prevent the webbing from extending any further. All 3-point type seat belt retractors B except the driver's seat belt also have an Automatic Locking Retractors (ALR) mode. The ALR mode (also called child restraint mode) is used when installing child seats. The ALR mode is activated when the seat belt is fully extended. When the webbing is then retracted partially, the ALR mode automatically locks the seat belt in a specific position so the webbing cannot be extended any further. To cancel the ALR mode, allow the seat C belt to fully wind back into the retractor. Check the seat belt retractors using the following test(s) to determine if a retractor assembly is operating prop- erly. D ELR Function Stationary Check Grasp the shoulder webbing and pull forward quickly. The retractor should lock and prevent the belt from extending further. E ALR Function Stationary Check 1. Pull out entire length of seat belt from retractor until a click is heard. F 2. Retract the webbing partially. A clicking noise should be heard as the webbing retracts indicating that the retractor is in the Automatic Locking Retractors (ALR) mode. 3. Grasp the seat belt and try to pull out the retractor. The webbing must lock and not extend any further. If G NG, replace the retractor assembly. 4. Allow the entire length of the webbing to retract to cancel the automatic locking mode. ELR Function Moving Check SB WARNING: Perform the following test in a safe, open area clear of other vehicles and obstructions (for example, a large, empty parking lot). Road surface must be paved and dry. DO NOT perform the following test on I wet or gravel roads or on public streets and highways. This could result in an accident and serious personal injury. The driver and passenger must be prepared to brace themselves in the event the retractor does not lock. J 1. Fasten driver's seat belt. Buckle a passenger into the seat for the belt that is to be tested. 2. Proceed to the designated safe area. 3. Drive the vehicle at approximately 16 km/h (10 MPH). Notify any passengers of a pending sudden stop K and the driver and passenger must be prepared to brace themselves in the event the retractor does not lock, apply brakes firmly and make a very hard stop. During stop, seat belts should lock and not be extended. If the seat belt retractor assembly does not lock, per- L form the retractor off-vehicle check. M Revision: 2005 November SB-7 2006 Q45 SEAT BELTS SEAT BELT RETRACTOR OFF-VEHICLE CHECK 1. Remove the seat belt retractor assembly. 2. Slowly pull out webbing while tilting the retractor assembly forward from the mounted position without twisting the retractor assembly as shown in the illustration. 15 degrees or less tilt : Webbing can be pulled out. 35 degrees or more tilt : Webbing locks and cannot be pulled out. If NG, replace the retractor assembly. PHIA0730E Revision: 2005 November SB-8 2006 Q45 LATCH (LOWER ANCHORS AND TETHER FOR CHILDREN) SYSTEM LATCH (LOWER ANCHORS AND TETHER FOR CHILDREN) SYSTEM Removal and Installation CAUTION: Replace anchor bolts if they are deformed or worn out. REMOVAL 1. Remove the rear seat cushion and seatback. Refer to SE-191, "Removal and Installation" . 2. Remove rear seat frame (Models with rear power seat). 3. Remove LATCH (Lower Anchor and Tether for Children) system. PFP:75466 A NHS0003J B C D INSTALLATION Install in the reverse order of removal. E SHIA0163E F G SB I J K L M Revision: 2005 November SB-9 2006 Q45 TOP TETHER STRAP CHILD RESTRAINT TOP TETHER STRAP CHILD RESTRAINT Removal and Installation CAUTION: Replace anchor bolts if they are deformed or worn out. REMOVAL 1. Remove the top tether strap child restraint cover. Refer to EI-48, "Removal and Installation" . 2. Remove the top tether strap child restraint. PFP:88000 NHS0003K INSTALLATION Install in the reverse order of removal. SHIA0164E Revision: 2005 November SB-10 2006 Q45 PRE-CRASH SEAT BELT PRE-CRASH SEAT BELT Component Parts and Harness Connector Location PFP:98845 A NHS0003L B C D E F G SB I J K L M PHIA0761E System Description NHS0003M q Pre-crash seat belt system is adapted to front seat belts RH/LH. q When the pre-crash seat belt control unit judges the emergency braking operation, it gives the sense of security by the motor built into the pre-crash seat belt retracting the shoulder belt and suppressing the crew's posture change. Also, it eases the damage of the collision. Revision: 2005 November SB-11 2006 Q45 PRE-CRASH SEAT BELT FUNCTION DESCRIPTION Operation condition Pre-crash seat belt operates under the following conditions. Condition q When the brake pedal is depressed more than a certain extent q When operation prohibition condition is not satisfied Operation prohibition condition If operation condition is satisfied, pre-crash seat belt does not operate under the following conditions. Condition q When seat belt is not fastened (Only the seat belt that is not fastened does not operate.) q When vehicle is moving backwards q When the vehicle speed is 15 km/h (9 MPH) or less q When pre-crash seat belt continuously operates 3 times or more *1 q At fail-safe condition *2 *1 :When pre-crash seat belt doesn't operate after it continuously operates 3 times or more, operation can be performed again by stopping operation for approximately 7 minutes. *2 : Refer to SB-12, "FAIL-SAFE MODE" for details of fail-safe mode. FAIL-SAFE MODE When a malfunction occurs in the following system, the pre-crash seat belt function is controlled according to the malfunctioning parts. Also, seat belt warning lamp blinks with fastening driver seat belt when the following malfunction occurs. Malfunctioning parts Brake pedal stroke sensor system malfunction Seat belt motor RH malfunction Seat belt motor LH malfunction Motor power supply circuit malfunction Control contents Pre-crash seat belt RH/LH do not activate when emergency brake operates. Pre-crash seat belt RH does not activate. Pre-crash seat belt LH does not activate. Pre-crash seat belt RH/LH do not activate. Seat Belt Warning Lamp Illumination Pattern Revision: 2005 November SB-12 PHIA0790E 2006 Q45 PRE-CRASH SEAT BELT CAN Communication System Description NHS0003N CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul- A tiplex communication line with high data communication speed and excellent error detection ability. Many elec- tronic 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 B 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. CAN Communication Unit C NHS0003O Refer to LAN-40, "CAN Communication Unit" . D E F G SB I J K L M Revision: 2005 November SB-13 2006 Q45 Schematic PRE-CRASH SEAT BELT NHS0003P Revision: 2005 November SB-14 THWM0063E 2006 Q45 PRE-CRASH SEAT BELT Wiring Diagram -- PSB -- NHS0003Q A B C D E F G SB I J K L M Revision: 2005 November SB-15 THWM0064E 2006 Q45 PRE-CRASH SEAT BELT Revision: 2005 November SB-16 THWM0203E 2006 Q45 PRE-CRASH SEAT BELT A B C D E F G SB I J K L M Revision: 2005 November SB-17 THWM0193E 2006 Q45 PRE-CRASH SEAT BELT Revision: 2005 November SB-18 THWM0067E 2006 Q45 PRE-CRASH SEAT BELT A B C D E F G SB I J K L M Revision: 2005 November SB-19 THWM0068E 2006 Q45 PRE-CRASH SEAT BELT Revision: 2005 November SB-20 THWM0194E 2006 Q45 PRE-CRASH SEAT BELT Terminals and reference value for Pre-Crash Seat Belt Control Unit Termi- Wire nal Color Item 1 GY/W Seat belt motor RH release direction signal 2 G/R Power source (Driver circuit) 3 L/Y Seat belt motor RH fastened direction signal 4 GY/W Seat belt motor LH fastened direction signal 5 B Ground (Driver circuit) 6 L/Y Seat belt motor LH release direction signal 7 G/B Belt indicator signal 8 SB Seat belt buckle switch (RH) signal 10 G/W Seat belt buckle switch (LH) signal 13 W/B Power source (Control circuit) 16 W Brake pedal stroke sensor 1 output signal 18 R Power source (Brake pedal stroke sensor) 20 G Brake pedal stroke sensor 2 output signal 21 B Ground (Brake pedal stroke sensor) 22 P CAN-L 24 L CAN-H 25 Ground (Shield wire) 26 B Ground (Control circuit) Signal input/output Condition Output Seat belt motor RH operation Other than above Input -- Output Seat belt motor RH operation Other than above Output Seat belt motor LH operation Other than above -- -- Output Seat belt motor LH operation Other than above When driver side seat belt is fastened Output When driver side seat belt is un-fastened When driver side seat belt is fastened and system malfunction Input When seat belt is fastened When seat belt is un-fastened Input When seat belt is fastened When seat belt is un-fastened Input -- Input Brake pedal is fully released operation Brake pedal is slightly depressed operation Output -- Input Brake pedal is fully released operation Brake pedal is slightly depressed operation -- -- Input/Output -- Input/Output -- -- -- -- -- NHS0003R A Voltage [V] (Approx.) Battery voltage B 0 Battery voltage Battery voltage C 0 Battery voltage D 0 0 Battery voltage E 0 Battery voltage F 0 Battery volt- age0 G 5 0 SB 5 0 Battery voltage I 1 J 4 5 K 4 1 L 0 -- M -- 0 0 Revision: 2005 November SB-21 2006 Q45 PRE-CRASH SEAT BELT Work Flow NHS0003S 1. Check the symptom and customer's requests. 2. Understand the system description. Refer to SB-11, "System Description" . 3. Perform the preliminary check. Refer to SB-24, "Preliminary Check" . 4. Check the self-diagnosis, results using CONSULT-II. Refer to SB-22, "CONSULT-II Function (PRECRASH SEATBELT)" . 5. Based on the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to SB-24, "Diagnoses Symptom Chart" . 6. Does pre-crash seat belt system operate normally? OK: GO TO 7. NG: GO TO 4. 7. INSPECTION END CONSULT-II Function (PRECRASH SEATBELT) NHS0003T CONSULT-II can display each diagnostic item using the diagnostic test modes shown following. CONSULT-II diagnosis items Inspection item self-diagnosis mode Content Reference page SELFDIG RESULTS Carries out the self-diagnosis. SB-23 PRECRASH SEATBELT DATA MONITOR Displays pre-crash seat belt control unit input data in real time. CAN DIAG SUPPORT MONITOR The results of transmit / receive diagnosis of CAN communication can be read. SB-23 LAN-29 ECU NUMBER Displays pre-crash seat belt control unit part No. CONSULT-II INSPECTION PROCEDURE CAUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication. 1. Turn ignition switch "OFF". 2. Connect "CONSULT-II" and "CONSULT-II CONVERTER" to the data link connector. 3. Turn ignition switch "ON". 4. Touch "START (NISSAN BASED VHCL)". PBIB1069E Revision: 2005 November SB-22 BCIA0029E 2006 Q45 PRE-CRASH SEAT BELT 5. Touch "PRECRASH SEATBELT". If "PRECRASH SEATBELT" is not indicated, refer to GI-37, A "CONSULT-II Data Link Connector (DLC) Circuit" . B 6. Select diagnosis mode. "SELF-DIAG RESULTS", "DATA MONITOR", "CAN DIAG SUPPORT MNTR" and "ECU PART NUMBER" are available. C BCIA0030E D E F SELF-DIAGNOSIS RESULTS Display Item List G BCIA0031E SB CONSULT-II display CAN COMM CIRCUIT [U1000] Item CAN communication Malfunction is detected when... Malfunction is detected in CAN communication. Reference page I SB-24 SB MOTOR RH CIRC [B2451] Seat belt motor RH Circuit of seat belt motor (RH) is open or shorted. SB-33 SB MOTOR LH CIRC [B2452] Seat belt motor LH Circuit of seat belt motor (LH) is open or shorted. SB-32 J BR STROKE SEN CIRC [B2453] Brake pedal stroke sensor Circuit of brake pedal stroke sensor is open or shorted. SB-30 MOTOR PWR SUP CIRC [B2454] Motor power supply circuit Circuit of motor power supply is open or shorted. PSB C/U INT CIRCUIT [B2455] ECU circuit ECU circuit internal abnormality SB-25 K DATA MONITOR Display Item List L Monitor item [OPERATION or UNIT] Contents SB SW RH SIG "ON/OFF" RH seat belt switch signal is displayed. M SB SW LH SIG "ON/OFF" LH seat belt switch signal is displayed. VHCL SPEED SE "Km/h" Vehicle speed signal is displayed. B PEDAL SIG1 "V" Brake pedal stroke sensor 1 signal voltage is displayed. B PEDAL SIG 2 "V" Brake pedal stroke sensor 2 signal voltage is displayed. Revision: 2005 November SB-23 2006 Q45 PRE-CRASH SEAT BELT Preliminary Check PRE-CRASH SEAT BELT OPERATION INSPECTION NHS0003U WARNING: q The following tests should be performed in a safe, open place that is free of traffic and obstacles. q The tests should be performed on a dry, paved road. Do not attempt the tests on wet or unpaved road, open road, or highway. (This may cause an accident or personal injury.) q Driver and passenger assume it will not operate and prepare themselves accordingly. 1. Tighten driver and passenger seat belts. 2. Drive at approximately 25 km/h (16 MPH). 3. Notify passenger of a sudden stop. Driver and passenger prepare themselves for the possibility of system not operating. Then, driver fully depresses the brake pedal to stop suddenly. 4. Make sure that the shoulder of the seat belt is pulled while braking. Diagnoses Symptom Chart NHS0003V Symptom Diagnosis procedure Check ignition power supply circuit All functions of pre-crash seat belt system does not operate. Check motor power supply and ground circuit Check CAN communication circuit Replace pre-crash seat belt control unit. Check seat belt buckle switch (driver side) circuit Driver side pre-crash seat belt system does not operate. Check pre-crash seat belt motor LH Replace pre-crash seat belt control unit. Passenger side pre-crash seat belt system does not operate. Check seat belt buckle switch (passenger side) circuit Check pre-crash seat belt motor RH Replace pre-crash seat belt control unit. Check CAN communication circuit Pre-crash seat belt system does not operate during emergency Check brake pedal stroke sensor circuit brake operation. Check brake pedal stroke sensor shield wire circuit Replace pre-crash seat belt control unit. Check CAN Communication Circuit [U1000] 1. CHECK SELF-DIAGNOSTIC RESULT Reference page SB-25 SB-25 SB-24 SB-11 SB-27 SB-32 SB-11 SB-28 SB-33 SB-11 SB-24 SB-30 SB-34 SB-11 NHS0003W CAUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication. With CONSULT-II 1. Connect CONSULT-II, and turn ignition switch ON. 2. Touch "PRECRASH SEATBELT" on "SELECT SYSTEM" screen. 3. Touch "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen. 4. Check display content in self-diagnostic results. Displayed U1000? Yes >> GO TO LAN-17, "Precautions When Using CONSULTII" . No >> Inspection END. PHIA0772E Revision: 2005 November SB-24 2006 Q45 PRE-CRASH SEAT BELT Check Ignition Power Supply Circuit 1. CHECK FUSE NHS0003X A Check 10A fuse [No.1, located in fuse block (J/B)]. NOTE: B Refer to SB-11, "Component Parts and Harness Connector Location" . OK or NG OK >> GO TO 2. C NG >> If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-2, "POWER SUPPLY ROUTING" . 2. CHECK IGNITION POWER SUPPLY CIRCUIT D 1. Turn ignition switch ON. 2. Check voltage between pre-crash seat belt control unit harness E connector B318 terminal 13 and ground. 13 (W/B) Ground : Battery voltage F OK or NG OK >> Ignition power supply circuit is OK. NG >> Check pre-crash seat belt control unit ignition power G supply circuit harness. Check Motor Power Supply and Ground Circuit [B2454] 1. CHECK FUSE PHIA0743E SB NHS0003Y I Check 30A fusible link (letter D , located in the fuse and fusible link box). NOTE: J Refer to SB-11, "Component Parts and Harness Connector Location" . OK or NG OK >> GO TO 2. K NG >> If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-2, "POWER SUPPLY ROUTING" . 2. CHECK MOTOR POWER SUPPLY CIRCUIT 1 L With CONSULT-II Select "SELF-DIAG RESULTS" and then make sure the "MOTOR M PWR SUP CIRC" is displayed. CONSULT-II display NO DTC MOTOR PWR SUP CIRC CONSULT-II display code B2454 Without CONSULT-II When CONSULT-II is not used, omit this inspection, and then GO TO 3. Displayed B2454? Yes >> GO TO 3. No >> Motor power supply system is normal. Revision: 2005 November SB-25 PHIA0770E 2006 Q45 PRE-CRASH SEAT BELT 3. CHECK MOTOR POWER SUPPLY CIRCUIT 2 Check voltage between pre-crash seat belt control unit harness connector B318 terminal 2 and ground. 2 (G/R) Ground : Battery voltage OK or NG OK >> GO TO 4. NG >> Repair or replace harness. 4. CHECK PRE-CRASH SEAT BELT CONTROL UNIT GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect pre-crash seat belt control unit connector. 3. Check continuity between pre-crash seat belt control unit har- ness connector B318 terminals 5, 26 and ground. 5 (B) Ground : Continuity should exist. 26 (B) Ground : Continuity should exist. OK or NG OK >> Motor power supply and ground circuit is OK. NG >> Repair or replace harness. PHIA0744E PHIA0745E Revision: 2005 November SB-26 2006 Q45 PRE-CRASH SEAT BELT Check Seat Belt Buckle Switch (Driver Side) Circuit 1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL NHS0003Z A With CONSULT-II Select "SB SW LH SIG" on DATA MONITOR screen, and then make sure that ON/OFF display changes syn- B chronized with the insertion operation to the seat belt buckle. SB SW LH SIG C When passenger seat belt is not fastened : OFF When passenger seat belt is fastened : ON D Without CONSULT-II 1. Turn the ignition switch ON. 2. Check voltage between seat belt buckle switch (driver side) harness connector and ground. Connector Terminal (+) () Condition Voltage [V] (Approx.) When seat belt is not fastened 0 B150 41 (L/B) Ground When seat belt is fastened 5 OK or NG OK >> Seat belt buckle switch (driver side) circuit is OK. NG >> GO TO 2. 2. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) HARNESS 1. Turn the ignition switch OFF. 2. Disconnect pre-crash seat belt control unit connector. 3. Check continuity between pre-crash seat belt control unit har- ness connector B318 terminal 10 and seat belt buckle switch (driver side) harness connector B150 terminal 41. 10 (G/W) - 41 (L/B) : Continuity should exist. 4. Check continuity between pre-crash seat belt control unit harness connector B318 terminal 10 and ground. 10 (G/W) - Ground : Continuity should not exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness. E PHIA0765E F G SB I PHIA0746E J K L M PHIA0747E Revision: 2005 November SB-27 2006 Q45 PRE-CRASH SEAT BELT 3. CHECK LH SEAT BELT SWITCH Check continuity between seat belt buckle switch (driver side) B150 terminals 41 and 15A while performing the insertion operation to the seat belt buckle. Connector Terminal Condition Continuity When seat belt is not fastened Yes B150 41 15A When seat belt is fastened No OK or NG OK >> GO TO 4. NG >> Replace seat belt buckle switch (driver side). 4. CHECK LH SEAT BELT SWITCH GROUND CIRCUIT HARNNES Check continuity between seat belt buckle switch (driver side) harness connector B150 terminal 15A and ground. 15A (B) - Ground : Continuity should not exist. OK or NG OK >> Check harness connection. q If it is OK, replace pre-crash seat belt control unit. q If it is NG, repair or replace malfunction part. NG >> Repair or replace harness. Check Seat Belt Buckle Switch (Passenger Side) Circuit 1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL With CONSULT-II Select "SB SW RH SIG" on DATA MONITOR screen, and then make sure that ON/OFF display changes synchronized with the insertion operation to the seat belt buckle. SB SW RH SIG When RH seat belt is not fastened :OFF When RH seat belt is fastened :ON Without CONSULT-II 1. Turn the ignition switch ON. 2. Check voltage between seat belt buckle switch (passenger side) harness connector and ground. Connector Terminal (Wire color) (+) () Condition Voltage [V] (Approx.) When seat belt is not fastened 0 B350 41 (SB) Ground When seat belt is fastened 5 OK or NG OK >> Seat belt buckle switch (passenger side) circuit is OK. NG >> GO TO 2. Revision: 2005 November SB-28 PHIA0748E PHIA0749E NHS00040 PHIA0764E PHIA0746E 2006 Q45 PRE-CRASH SEAT BELT 2. CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) HARNESS 1. Turn ignition switch OFF. 2. Disconnect pre-crash seat belt control unit connector. 3. Check continuity between pre-crash seat belt control unit har- ness connector B318 terminal 8 and seat belt buckle switch (passenger side) harness connector B350 terminal 41. 8 (SB) - 41 (SB) : Continuity should exist. 4. Check continuity between pre-crash seat belt control unit harness connector B318 terminal 8 and ground. 8 (SB) - Ground : Continuity should not exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness. 3. CHECK RH SEAT BELT SWITCH Check continuity between seat belt buckle switch (passenger side) B350 terminals 41 and 14 while performing the insertion operation to the seat belt buckle. Connector Terminal Condition Continuity When seat belt is not fastened Yes B350 41 14 When seat belt is fastened No OK or NG OK >> GO TO 4. NG >> Replace seat belt buckle (passenger side). 4. CHECK RH SEAT BELT SWITCH GROUND CIRCUIT HARNNES Check continuity between seat belt buckle switch (passenger side) harness connector B350 terminal 14 and ground. 14 (B) - Ground : Continuity should exist. OK or NG OK >> Check harness connection. q If it is OK, replace pre-crash seat belt control unit. q If it is NG, repair or replace malfunction part. NG >> Repair or replace harness. A B C D PHIA0750E E F G SB I PHIA0751E J K L M PHIA0752E Revision: 2005 November SB-29 2006 Q45 PRE-CRASH SEAT BELT Check Brake Pedal Stroke Sensor Circuit [B2453] 1. INSPECTION WITH CONSULT-II With CONSULT-II Select "SELF-DIAG RESULTS", and then make sure that "BR STROKE SEN CIRC" is displayed. CONSULT-II display NO DTC BR STROKE SEN CIRC CONSULT-II display code B2453 NHS00041 Without CONSULT-II When CONSULT-II is not used, omit this inspection, and then GO TO 2. Displayed B2453? Yes >> GO TO 3. No >> GO TO 2. 2. CHECK PRE-CRASH SEAT BELT CONTOROL UNIT INPUT SIGNAL PHIA0769E With CONSULT-II Select "B PEDAL SIG1" and "B PEDAL SIG2", and then make sure that the voltage changes synchronized with brake pedal operation. B PEDAL SIG1 Brake released depressed : Approx. 1 4V B PEDAL SIG 2 Brake released depressed : Approx. 4 1V Without CONSULT-II 1. Turn the ignition switch ON. 2. Check voltage between pre-crash seat belt control unit harness connector and ground. Connector Terminal (Wire color) (+) () Condition Voltage [V] (Approx.) B318 16 (W) 20 (G) Ground Brake released depressed 1 4 4 1 OK or NG OK >> Brake pedal stroke sensor system is normal. NG >> GO TO 3. PHIA0766E PHIA0753E Revision: 2005 November SB-30 2006 Q45 PRE-CRASH SEAT BELT 3. CHECK BRAKE PEDAL STROKE SENSOR HARNESS A 1. Turn the ignition switch OFF. 2. Disconnect pre-crash seat belt control unit connector and brake pedal stroke sensor connector. B 3. Check continuity between pre-crash seat belt control unit har- ness connector B318 terminals 16, 18, 20, and 21 and brake pedal stroke sensor harness connector M405 terminals 1, 2, 3, C and 4. 16 (W) - 3(W) : Continuity should exist. 18 (R) - 2(R) : Continuity should exist. D 20 (G) - 1(G) : Continuity should exist. PHIA0754E 21 (B) - 4(B) : Continuity should exist. E 4. Check continuity between pre-crash seat belt control unit harness connector B318 terminals 16, 18, 20, and 21 and ground. 16 (W) - Ground : Continuity should not exist. F 18 (R) - Ground : Continuity should not exist. 20 (G) - Ground : Continuity should not exist. G 21 (B) - Ground : Continuity should not exist. OK or NG OK >> GO TO 4. SB NG >> Repair or replace harness between pre-crash seat belt control unit and brake pedal stroke sensor. 4. CHECK BRAKE PEDAL STROKE SENSOR POWER SUPPLY I 1. Connect pre-crash seat belt control unit connector. 2. Turn the ignition switch ON. J 3. Check voltage between pre-crash seat belt control unit harness connector B318 terminal 18 and ground. 18 (R) - Ground : Approx. 5V K OK or NG OK >> GO TO 5. NG >> Replace pre-crash seat belt control unit. L 5. CHECK BRAKE PEDAL STROKE SENSOR PHIA0755E M Check continuity between brake pedal stroke sensor terminal 2 and terminals 1, 3 while performing brake operation. Terminal Condition Resistance [K] 1 Brake released depressed 2 3 Brake released depressed 1.0 0.2 0.2 1.0 OK or NG OK >> Check harness connection. q If it is OK, replace pre-crash seat belt control unit. q If it is NG, repair or replace malfunction part. NG >> Replace brake pedal stroke sensor. PHIA0756E Revision: 2005 November SB-31 2006 Q45 PRE-CRASH SEAT BELT Check Pre-Crash Seat Belt Motor LH Circuit [B2452] 1. CHECK LH SEAT BELT MOTOR CIRCUIT With CONSULT-II Select "SELF-DIAG RESULTS" of CONSULT-II, and then make sure that "SB MOTOR LH CIRC" is displayed. CONSULT-II display NO DTC SB MOTOR LH CIRC CONSULT-II display code B2452 Without CONSULT-II When CONSULT-II is not used, omit this inspection, and then GO TO 2. Displayed B2452? Yes >> GO TO 2. No >> Pre-crash seat belt motor LH circuit is OK. 2. CHECK LH SEAT BELT MOTOR HARNESS 1. Turn the ignition switch OFF. 2. Disconnect pre-crash seat belt control unit connector and precrash seat belt motor LH connector. 3. Check continuity between pre-crash seat belt control unit harness connector B318 terminals 4, 6 and pre-crash seat belt motor LH harness connector B117 terminals 1, 2. 4(GY/W) - 1(G/Y) 6(L/Y) - 2(G/R) : Continuity should exist. : Continuity should exist. 4. Check continuity between pre-crash seat belt control unit harness connector B318terminals 4, 6 and ground. 4(GY/W) - Ground 6(L/Y) - Ground : Continuity should not exist. : Continuity should not exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness. 3. CHECK SEAT BELT MOTOR Check continuity between pre-crash seat belt motor LH B117 terminals 1 and 2. 1- 2 : Continuity should exist. OK or NG OK >> Replace pre-crash seat belt control unit. NG >> Replace pre-crash seat belt motor LH. Revision: 2005 November SB-32 NHS00042 PHIA0768E PHIA0757E PHIA0758E 2006 Q45 PRE-CRASH SEAT BELT Check Pre-Crash Seat Belt Motor RH Circuit [B2451] 1. CHECK RH SEAT BELT MOTOR CIRCUIT With CONSULT-II Select SELF-DIAG RESULTS" of CONSULT-II, and then make sure that "SB MOTOR RH CIRC" is displayed. CONSULT-II display NO DTC SB MOTOR RH CIRC CONSULT-II display code B2451 Without CONSULT-II When CONSULT-II is not used, omit this inspection, and then GO TO 2. Displayed B2451? Yes >> GO TO 2. No >> Pre-crash seat belt motor RH circuit is OK. 2. CHECK RH SEAT BELT MOTOR HARNESS 1. Turn the ignition switch OFF. 2. Disconnect pre-crash seat belt control unit connector and precrash seat belt motor RH connector. 3. Check continuity between pre-crash seat belt control unit harness connector B318 terminals 1, 3 and pre-crash seat belt motor RH harness connector B317 terminals 1, 2. 1 (GY/W) - 2(GY/W) : Continuity should exist. 3 (L/Y) - 1(L/Y) : Continuity should exist. 4. Check continuity between pre-crash seat belt control unit harness connector B318 terminals 1, 3 and ground. 1(GY/W) - Ground : Continuity should not exist. 3 (L/Y) - Ground : Continuity should not exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness. 3. CHECK SEAT BELT MOTOR Check continuity between pre-crash seat belt motor RH B317 terminals 1 and 2. 1- 2 : Continuity should exist. OK or NG OK >> Replace pre-crash seat belt control unit. NG >> Replace pre-crash seat belt motor RH. Revision: 2005 November SB-33 NHS00043 A B C D PHIA0767E E F G SB I J PHIA0759E K L M PHIA0758E 2006 Q45 PRE-CRASH SEAT BELT Check Brake Pedal Stroke Sensor Shield Wire Circuit 1. CHECK PRE-CRASH SEAT BELT INPUT SIGNAL With CONSULT-II Select "B PEDAL SIG1 and 2" on DATA MONITOR screen, and then make sure that the voltage does not change if brake pedal is not operated. NOTE: Diagnosis should be performed with engine running, audio and air conditioner operating. B PEDAL SIG1 Brake released : There is no change in the voltage value, and it is almost constant B PEDAL SIG2 Brake released :There is no change in the voltage value, and it is almost constant. Without CONSULT-II 1. Start engine. 2. Check voltage between pre-crash seat belt harness connector B318 terminals 16, 20 and ground without brake pedal operation. Connector Terminal (Wire color) (+) () Condition Voltage [V] (Approx.) B318 16(W) 20(G) Ground Brake released When engine is started and audio and air conditioner are operating There is no change in the voltage value, and it is almost constant. There is no change in the voltage value, and it is almost constant. OK or NG OK >> Brake pedal stroke sensor shield wire circuit is OK. NG >> Check shield wire for damage. Repair or replace if necessary. NHS00044 PHIA0766E PHIA0760E Revision: 2005 November SB-34 2006 Q45Acrobat Distiller 4.05 for Windows FrameMaker SGML 5.5.6p145J