Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. Precautions for NVIS/IVIS (NISSAN/INFINITI VEHICLE IMMOBILIZER SYSTEM - NATS) (If Equipped) AAS0008S NVIS/IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of NVIS/IVIS (NATS).
Index of /manuals/AUTOMOBILE/NISSAN/G35/Coupe/2003
GENERAL INFORMATION A GENERAL INFORMATION GI GI SECTION B GENERAL INFORMATION C D CONTENTS E PRECAUTIONS ......................................................... 3 SAMPLE/WIRING DIAGRAM - EXAMPL - ......... 16 F Description .............................................................. 3 DESCRIPTION ................................................... 17 Precautions for Supplemental Restraint System Abbreviations ......................................................... 23 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN- SERVICE INFORMATION FOR ELECTRICAL INCI- G SIONER" ................................................................. 3 DENT ........................................................................ 24 Precautions for NVIS/IVIS (NISSAN/INFINITI How to Check Terminal .......................................... 24 VEHICLE IMMOBILIZER SYSTEM - NATS) (If Equipped) ................................................................ 3 CONNECTOR AND TERMINAL PIN KIT ........... 24 HOW TO PROBE CONNECTORS ..................... 24 H Precautions for Battery Service ............................... 4 How to Perform Efficient Diagnosis for an Electrical General Precautions ............................................... 4 Precautions for Three Way Catalyst ........................ 5 Incident .................................................................. 27 WORK FLOW ..................................................... 27 I Precautions for Fuel (Unleaded Premium Gasoline INCIDENT SIMULATION TESTS ....................... 27 Required) ................................................................ 5 CIRCUIT INSPECTION ...................................... 30 Precautions for Multiport Fuel Injection System or Control Units and Electrical Parts .......................... 35 J Engine Control System ........................................... 6 PRECAUTIONS ................................................. 35 Precautions for Hoses ............................................. 7 SMJ INSTALLATION .......................................... 36 HOSE REMOVAL AND INSTALLATION .............. 7 CONSULT-II CHECKING SYSTEM ......................... 37 K HOSE CLAMPING ............................................... 7 Description ............................................................. 37 Precautions for Engine Oils ..................................... 8 Function and System Application .......................... 37 HEALTH PROTECTION PRECAUTIONS ............ 8 ENVIRONMENTAL PROTECTION PRECAU- Nickel Metal Hydride Battery Replacement ........... 37 Checking Equipment ............................................. 38 L TIONS .................................................................. 8 CONSULT-II Start Procedure ................................. 38 Precautions for Air Conditioning .............................. 8 CONSULT-II Data Link Connector (DLC) Circuit ... 39 HOW TO USE THIS MANUAL .................................. 9 INSPECTION PROCEDURE ............................. 40 M Description .............................................................. 9 LIFTING POINT ........................................................ 41 Terms ...................................................................... 9 Special Service Tools ............................................ 41 Units ........................................................................ 9 Garage Jack and Safety Stand .............................. 41 Contents .................................................................. 9 2-Pole Lift .............................................................. 42 Components .......................................................... 10 Board-On Lift ......................................................... 43 SYMBOLS .......................................................... 10 TOW TRUCK TOWING ............................................ 44 How to Follow Trouble Diagnoses ..........................11 Tow Truck Towing .................................................. 44 DESCRIPTION ....................................................11 Vehicle Recovery (Freeing a Stuck Vehicle) .......... 45 HOW TO FOLLOW TEST GROUPS IN TROU- FRONT ............................................................... 45 BLE DIAGNOSES ...............................................11 REAR ................................................................. 45 HARNESS WIRE COLOR AND CONNECTOR TIGHTENING TORQUE OF STANDARD BOLTS ... 46 NUMBER INDICATION ...................................... 12 Tightening Torque Table ........................................ 46 KEY TO SYMBOLS SIGNIFYING MEASURE- RECOMMENDED CHEMICAL PRODUCTS AND MENTS OR PROCEDURES .............................. 13 SEALANTS .............................................................. 47 How to Read Wiring Diagrams .............................. 15 Recommended Chemical Products and Sealants... 47 CONNECTOR SYMBOLS .................................. 15 IDENTIFICATION INFORMATION ........................... 48 Revision; 2004 April GI-1 2003 G35 Coupe Model Variation ...................................................... 48 IDENTIFICATION NUMBER ............................... 49 IDENTIFICATION PLATE ................................... 49 ENGINE SERIAL NUMBER ............................... 50 AUTOMATIC TRANSMISSION NUMBER .......... 50 MANUAL TRANSMISSION NUMBER ................50 Dimensions ............................................................50 Wheels & Tires .......................................................51 TERMINOLOGY .......................................................52 SAE J1930 Terminology List ..................................52 Revision; 2004 April GI-2 2003 G35 Coupe PRECAUTIONS PRECAUTIONS Description PFP:00001 GI AAS0008Q Observe the following precautions to ensure safe and proper servicing. These precautions are not described in each individual section. B Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" AAS0008R C 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 D 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 Man- ual. E 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 per- F formed by an authorized NISSAN/INFINITI dealer. q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per- sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS section. G 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. H Precautions for NVIS/IVIS (NISSAN/INFINITI VEHICLE IMMOBILIZER SYSTEM - NATS) (If Equipped) AAS0008S I NVIS/IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of NVIS/IVIS (NATS). Both of the originally supplied ignition key IDs have been NVIS/IVIS (NATS) registered. J The security indicator is located on the instrument panel. The indicator blinks when the immobilizer system is functioning. Therefore, NVIS/IVIS (NATS) warns outsiders that the vehicle is equipped with the anti-theft system. K q When NVIS/IVIS (NATS) detects trouble, the security indicator lamp lights up while ignition switch is in "ON" position. This lighting up indicates that the anti-theft is not functioning, so prompt service is required. q When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of L other NVIS/IVIS (NATS) ignition key IDs), CONSULT-II hardware and CONSULT-II NVIS/IVIS (NATS) software is necessary. Regarding the procedures of NVIS/IVIS (NATS) initialization and NVIS/IVIS (NATS) ignition key ID regis- M tration, refer to CONSULT-II operation manual, NVIS/IVIS (NATS). Therefore, CONSULT-II NVIS/IVIS (NATS) software (program card and operation manual) must be kept strictly confidential to maintain the integrity of the anti-theft function. q When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of other NVIS/IVIS (NATS) ignition key IDs), it may be necessary to re-register original key identification. Therefore, be sure to receive all keys from vehicle owner. A maximum of four or five key IDs can be registered into NVIS/IVIS (NATS). q When failing to start the engine first time using the key of NVIS/IVIS (NATS), start as follows. 1. Leave the ignition key in "ON" position for approximately 5 seconds. 2. Turn ignition key to "OFF" or "LOCK" position and wait approximately 5 seconds. 3. Repeat step 1 and 2 again. 4. Restart the engine while keeping the key separate from any others on key-chain. Revision; 2004 April GI-3 2003 G35 Coupe PRECAUTIONS Precautions for Battery Service AAS0008T Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interference between the window edge and the vehicle when the door is opened/closed. During normal operation, the window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic window function will not work with the battery disconnected. General Precautions AAS0008U q Do not operate the engine for an extended period of time without proper exhaust ventilation. Keep the work area well ventilated and free of any inflammable materials. Special care should be taken when handling any inflammable or poisonous materials, such as gasoline, refrigerant gas, etc. When working in a pit or other enclosed area, be sure to properly ventilate the area before working with hazardous materials. Do not smoke while working on the vehicle. SGI285 q Before jacking up the vehicle, apply wheel chocks or other tire blocks to the wheels to prevent the vehicle from moving. After jacking up the vehicle, support the vehicle weight with safety stands at the points designated for proper lifting before working on the vehicle. These operations should be done on a level surface. q When removing a heavy component such as the engine or transaxle/transmission, be careful not to lose your balance and drop them. Also, do not allow them to strike adjacent parts, especially the brake tubes and master cylinder. SGI231 q Before starting repairs which do not require battery power: Turn off ignition switch. Disconnect the negative battery terminal. q If the battery terminals are disconnected, recorded memory of radio and each control unit is erased. SEF289H q To prevent serious burns: Avoid contact with hot metal parts. Do not remove the radiator cap when the engine is hot. q Dispose of drained oil or the solvent used for cleaning parts in an appropriate manner. q 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. q Clean all disassembled parts in the designated liquid or solvent prior to inspection or assembly. SGI233 q Replace oil seals, gaskets, packings, O-rings, locking washers, cotter pins, self-locking nuts, etc. with new ones. q Replace inner and outer races of tapered roller bearings and needle bearings as a set. Revision; 2004 April GI-4 2003 G35 Coupe PRECAUTIONS q Arrange the disassembled parts in accordance with their assembled locations and sequence. q Do not touch the terminals of electrical components which use microcomputers (such as ECM). GI Static electricity may damage internal electronic components. q After disconnecting vacuum or air hoses, attach a tag to indicate the proper connection. q Use only the fluids and lubricants specified in this manual. B q Use approved bonding agent, sealants or their equivalents when required. q Use hand tools, power tools (disassembly only) and recom- mended special tools where specified for safe and efficient ser- C vice repairs. q When repairing the fuel, oil, water, vacuum or exhaust systems, check all affected lines for leaks. D E q Before servicing the vehicle: Protect fenders, upholstery and carpeting with appropriate covers. Take caution that keys, buckles or buttons do not scratch paint. PBIC0190E F G H I SGI234 J WARNING: To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness connectors which are related to the engine control system and TCM (transmission control module) system. The connectors should be disconnected only when working according to the WORK FLOW of K TROUBLE DIAGNOSES in EC and AT sections. Precautions for Three Way Catalyst AAS0008V L If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To prevent this, follow the instructions. q Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst. M q When checking for ignition spark or measuring engine compression, make tests quickly and only when necessary. q Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to the catalyst. Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three way catalyst. Precautions for Fuel (Unleaded Premium Gasoline Required) AAS0008W Use unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-Knock Index) number (Research octane number 96). If unleaded premium gasoline is not available, unleaded regular gasoline with an octane rating of at least 87 AKI number (Research octane number 91) can be used, but only under the following precautions: q have the fuel tank filled only partially with unleaded regular gasoline, and fill up with unleaded premium gasoline as soon as possible. q avoid full throttle driving and abrupt acceleration. Revision; 2004 April GI-5 2003 G35 Coupe PRECAUTIONS However, for maximum vehicle performance, the use of unleaded premium gasoline is recommended. CAUTION: Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Using a fuel other than that specified could adversely affect the emission control devices and systems, and could also affect the warranty coverage validity. Precautions for Multiport Fuel Injection System or Engine Control System AAS0008X q Before connecting or disconnecting any harness connector for the multiport fuel injection system or ECM: Turn ignition switch to "OFF" position. Disconnect negative battery terminal. Otherwise, there may be damage to ECM. q Before disconnecting pressurized fuel line from fuel pump to injectors, be sure to release fuel pressure. q Be careful not to jar components such as ECM and mass air flow sensor. SGI787 Revision; 2004 April GI-6 2003 G35 Coupe PRECAUTIONS Precautions for Hoses HOSE REMOVAL AND INSTALLATION q To prevent damage to rubber hose, do not pry off rubber hose with tapered tool or screwdriver. q To reinstall the rubber hose securely, make sure that hose insertion length and orientation is correct. (If tube is equipped with hose stopper, insert rubber hose into tube until it butts up against hose stopper.) HOSE CLAMPING q If old rubber hose is re-used, install hose clamp in its original position (at the indentation where the old clamp was). If there is a trace of tube bulging left on the old rubber hose, align rubber hose at that position. q Discard old clamps; replace with new ones. q After installing plate clamps, apply force to them in the direction of the arrow, tightening rubber hose equally all around. Revision; 2004 April GI-7 AAS0008Z GI B C D SMA019D E F G H SMA020D I J K SMA021D L M SMA022D 2003 G35 Coupe PRECAUTIONS Precautions for Engine Oils AAS00090 Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible. HEALTH PROTECTION PRECAUTIONS q Avoid prolonged and repeated contact with oils, particularly used engine oils. q Wear protective clothing, including impervious gloves where practicable. q Do not put oily rags in pockets. q Avoid contaminating clothes, particularly underpants, with oil. q Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regu- larly. q First aid treatment should be obtained immediately for open cuts and wounds. q Use barrier creams, applying them before each work period, to help the removal of oil from the skin. q Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Prepa- rations containing lanolin replace the natural skin oils which have been removed. q Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin. q If skin disorders develop, obtain medical advice without delay. q Where practical, degrease components prior to handling. q Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face shields; in addition an eye wash facility should be provided. ENVIRONMENTAL PROTECTION PRECAUTIONS Dispose of used oil and used oil filters through authorized waste disposal contractors to licensed waste disposal sites, or to the waste oil reclamation trade. If in doubt, contact the local authority for advice on disposal facilities. It is illegal to pour used oil on to the ground, down sewers or drains, or into water sources. The regulations concerning pollution vary between regions. Precautions for Air Conditioning AAS00091 Use an approved refrigerant recovery unit any time the air conditioning system must be discharged. Refer to ATC/MTC section "HFC-134a (R-134a) Service Procedure", "REFRIGERANT LINES" for specific instructions. Revision; 2004 April GI-8 2003 G35 Coupe HOW TO USE THIS MANUAL HOW TO USE THIS MANUAL Description PFP:00008 GI AAS00093 This volume explains "Removal, Disassembly, Installation, Inspection and Adjustment" and "Trouble Diag- noses". B Terms AAS00094 q The captions WARNING and CAUTION warn you of steps that must be followed to prevent personal injury and/or damage to some part of the vehicle. C WARNING indicates the possibility of personal injury if instructions are not followed. CAUTION indicates the possibility of component damage if instructions are not followed. BOLD TYPED STATEMENTS except WARNING and CAUTION give you helpful information. D Standard value:Tolerance at inspection and adjustment. Limit value:The maximum or minimum limit value that should not be exceeded at inspection and adjust- ment. E Units AAS000KY q The UNITS given in this manual are primarily expressed as the SI UNIT (International System of Unit), and alternatively expressed in the metric system and in the yard/pound system. F Also with regard to tightening torque of bolts and nuts, there are descriptions both about range and about the standard tightening torque. G "Example" Range Outer Socket Lock Nut : 59 - 78 N·m (6.0 - 8.0 kg-m, 43 - 58 ft-lb) H Standard I Drive Shaft Installation Bolt : 44.3 N·m (4.5 kg-m, 33 ft-lb) Contents AAS00096 q ALPHABETICAL INDEX is provided at the end of this manual so that you can rapidly find the item and J page you are searching for. q A QUICK REFERENCE INDEX, a black tab (e.g. ) is provided on the first page. You can quickly find K the first page of each section by matching it to the section's black tab. q THE CONTENTS are listed on the first page of each section. q THE TITLE is indicated on the upper portion of each page and shows the part or system. L q THE PAGE NUMBER of each section consists of two or three letters which designate the particular sec- tion and a number (e.g. "BR-5"). q THE SMALL ILLUSTRATIONS show the important steps such as inspection, use of special tools, knacks M of work and hidden or tricky steps which are not shown in the previous large illustrations. Assembly, inspection and adjustment procedures for the complicated units such as the automatic tran- saxle or transmission, etc. are presented in a step-by-step format where necessary. Revision; 2004 April GI-9 2003 G35 Coupe HOW TO USE THIS MANUAL Components AAS000KZ q THE LARGE ILLUSTRATIONS are exploded views (See the following) and contain tightening torques, lubrication points, section number of the PARTS CATALOG (e.g. SEC. 440) and other information necessary to perform repairs. The illustrations should be used in reference to service matters only. When ordering parts, refer to the appropriate PARTS CATALOG . Components shown in an illustration may be identified by a circled number. When this style of illustration is used, the text description of the components will follow the illustration. SYMBOLS SYMBOL SAIA0399E DESCRIPTION Tightening torque The tightening torque specifications of bolts and nuts may be presented as either a range or a standard tightening torque. Should be lubricated with grease. Unless otherwise indicated, use recommended multi-purpose grease. Should be lubricated with oil. Sealing point Checking point Always replace after every disassembly. Apply petroleum jelly. P Apply ATF. Select with proper thickness. Adjustment is required. Revision; 2004 April GI-10 2003 G35 Coupe HOW TO USE THIS MANUAL How to Follow Trouble Diagnoses DESCRIPTION AAS00098 GI NOTICE: Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing. B 1. Before performing trouble diagnoses, read the "Preliminary Check", the "Symptom Chart" or the "Work Flow". 2. After repairs, re-check that the problem has been completely eliminated. C 3. Refer to Component Parts and Harness Connector Location for the Systems described in each section for identification/location of components and harness connectors. 4. Refer to the Circuit Diagram for quick pinpoint check. D If you need to check circuit continuity between harness connectors in more detail, such as when a sub-harness is used, refer to Wiring Diagram in each individual section and Harness Layout in PG section for identification of harness connectors. E 5. When checking circuit continuity, ignition switch should be OFF. 6. Before checking voltage at connectors, check battery voltage. 7. After accomplishing the Diagnostic Procedures and Electrical Components Inspection, make sure F that all harness connectors are reconnected as they were. HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES G H I J K L M 1. Work and diagnostic procedure Start to diagnose a problem using procedures indicated in enclosed test groups. 2. Questions and required results Questions and required results are indicated in bold type in test group. The meaning of are as follows: Revision; 2004 April GI-11 SAIA0256E 2003 G35 Coupe HOW TO USE THIS MANUAL a. Battery voltage 11 - 14V or approximately 12V b. Voltage : Approximately 0V Less than 1V 3. Symbol used in illustration Symbols included in illustrations refer to measurements or procedures. Before diagnosing a problem, familiarize yourself with each symbol. Refer to "Connector Symbols" in GI Section and "KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES" below. 4. Action items Next action for each test group is indicated based on result of each question. Test group number is shown in the left upper portion of each test group. HARNESS WIRE COLOR AND CONNECTOR NUMBER INDICATION There are two types of harness wire color and connector number indication. TYPE 1: Harness Wire Color and Connector Number are Shown in Illustration q Letter designations next to test meter probe indicate harness wire color. q Connector numbers in a single circle (e.g. M33) indicate harness connectors. q Connector numbers in a double circle (e.g. F211) indicate component connectors. AGI070 Revision; 2004 April GI-12 2003 G35 Coupe HOW TO USE THIS MANUAL TYPE 2: Harness Wire Color and Connector Number are Shown in Text GI B C D E F G H KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES SGI144A I Symbol Symbol explanation Check after disconnecting the connector to be measured. Symbol Symbol explanation J Procedure with Generic Scan Tool (GST, OBD-II scan tool) Check after connecting the connector to be measured. Procedure without CONSULT, CON- K SULT-II or GST Insert key into ignition switch. A/C switch is "OFF". L Remove key from ignition switch. Turn ignition switch to "OFF" position. A/C switch is "ON". M REC switch is "ON". Turn ignition switch to "ON" position. REC switch is "OFF". Turn ignition switch to "START" position. Turn ignition switch from "OFF" to "ACC" position. Turn ignition switch from "ACC" to "OFF" position. Fan switch is "ON". (At any position except for "OFF" position) Fan switch is "OFF". Apply positive voltage from battery with fuse directly to components. Revision; 2004 April GI-13 2003 G35 Coupe Symbol HOW TO USE THIS MANUAL Symbol explanation Turn ignition switch from "OFF" to "ON" position. Symbol Symbol explanation Drive vehicle. Turn ignition switch from "ON" to "OFF" position. Do not start engine, or check with engine stopped. Start engine, or check with engine running. Apply parking brake. Release parking brake. Check after engine is warmed up sufficiently. Voltage should be measured with a voltmeter. Circuit resistance should be measured with an ohmmeter. Current should be measured with an ammeter. Pulse signal should be checked with an oscilloscope. Procedure with CONSULT-II Procedure without CONSULT-II Disconnect battery negative cable. Depress brake pedal. Release brake pedal. Depress accelerator pedal. Release accelerator pedal. Pin terminal check for SMJ type ECM and TCM connectors. For details regarding the terminal arrangement, refer to the "ELECTRICAL UNITS" electrical reference page at the end of the manual. Revision; 2004 April GI-14 2003 G35 Coupe HOW TO USE THIS MANUAL How to Read Wiring Diagrams CONNECTOR SYMBOLS Most of connector symbols in wiring diagrams are shown from the terminal side. q Connector symbols shown from the terminal side are enclosed by a single line and followed by the direction mark. q Connector symbols shown from the harness side are enclosed by a double line and followed by the direction mark. q Certain systems and components, especially those related to OBD, may use a new style slide-locking type harness connector. For description and how to disconnect, refer to PG section, "Description", "HARNESS CONNECTOR". q Male and female terminals Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams. AAS00099 GI B C D E F G H SAIA0257E I J K L M SGI363 Revision; 2004 April GI-15 2003 G35 Coupe HOW TO USE THIS MANUAL SAMPLE/WIRING DIAGRAM - EXAMPL q For detail, refer to following "DESCRIPTION". Revision; 2004 April GI-16 SGI091A 2003 G35 Coupe HOW TO USE THIS MANUAL Optional Splice GI B C D E F G H DESCRIPTION SGI942 I Number Item Description J q This shows the condition when the system receives battery positive voltage (can be oper- 1 Power condition ated). K 2 Fusible link q The double line shows that this is a fusible link. q The open circle shows current flow in, and the shaded circle shows current flow out. 3 Fusible link/fuse loca- q This shows the location of the fusible link or fuse in the fusible link or fuse box. For arrange- tion ment, refer to PG section, POWER SUPPLY ROUTING. L 4 Fuse q The single line shows that this is a fuse. q The open circle shows current flow in, and the shaded circle shows current flow out. M 5 Current rating q This shows the current rating of the fusible link or fuse. 6 Connectors q This shows that connector E3 is female and connector M1 is male. q The G/R wire is located in the 1A terminal of both connectors. q Terminal number with an alphabet (1A, 5B, etc.) indicates that the connector is SMJ connec- tor. Refer to PG section, SMJ (SUPER MULTIPLE JUNCTION). 7 Optional splice q The open circle shows that the splice is optional depending on vehicle application. 8 Splice q The shaded circle shows that the splice is always on the vehicle. 9 Page crossing q This arrow shows that the circuit continues to an adjacent page. q The A will match with the A on the preceding or next page. 10 Common connector q The dotted lines between terminals show that these terminals are part of the same connector. 11 Option abbreviation q This shows that the circuit is optional depending on vehicle application. 12 Relay q This shows an internal representation of the relay. For details, refer to PG section, STANDARDIZED RELAY. 13 Connectors q This shows that the connector is connected to the body or a terminal with bolt or nut. Revision; 2004 April GI-17 2003 G35 Coupe HOW TO USE THIS MANUAL Number Item 14 Wire color 15 Option description 16 Switch 17 Assembly parts 18 Cell code 19 Current flow arrow 20 System branch 21 Page crossing 22 Shielded line 23 Component box in wave line 24 Component name 25 Connector number 26 Ground (GND) 27 Ground (GND) 28 Connector views 29 Common component 30 Connector color Description q This shows a code for the color of the wire. B = Black W = White R = Red G = Green L = Blue Y = Yellow LG = Light Green BR = Brown OR or O = Orange P = Pink PU or V (Violet) = Purple GY or GR = Gray SB = Sky Blue CH = Dark Brown DG = Dark Green When the wire color is striped, the base color is given first, followed by the stripe color as shown below: Example: L/W = Blue with White Stripe q This shows a description of the option abbreviation used on the page. q This shows that continuity exists between terminals 1 and 2 when the switch is in the A position. Continuity exists between terminals 1 and 3 when the switch is in the B position. q Connector terminal in component shows that it is a harness incorporated assembly. q This identifies each page of the wiring diagram by section, system and wiring diagram page number. q Arrow indicates electric current flow, especially where the direction of standard flow (vertically downward or horizontally from left to right) is difficult to follow. q A double arrow " cuit operation. " shows that current can flow in either direction depending on cir- q This shows that the system branches to another system identified by cell code (section and system). q This arrow shows that the circuit continues to another page identified by cell code. q The C will match with the C on another page within the system other than the next or preceding pages. q The line enclosed by broken line circle shows shield wire. q This shows that another part of the component is also shown on another page (indicated by wave line) within the system. q This shows the name of a component. q This shows the connector number. q The letter shows which harness the connector is located in. q Example: M : main harness. For detail and to locate the connector, refer to PG section "Main Harness", "Harness Layout". A coordinate grid is included for complex harnesses to aid in locating connectors. q The line spliced and grounded under wire color shows that ground line is spliced at the grounded connector. q This shows the ground connection. For detailed ground distribution information, refer to "Ground Distribution" in PG section. q This area shows the connector faces of the components in the wiring diagram on the page. q Connectors enclosed in broken line show that these connectors belong to the same component. q This shows a code for the color of the connector. For code meaning, refer to wire color codes, Number 14 of this chart. q This shows the arrangement of fusible link(s) and fuse(s), used for connector views of 31 Fusible link and fuse box "POWER SUPPLY ROUTING" in PG section. The open square shows current flow in, and the shaded square shows current flow out. 32 Reference area q This shows that more information on the Super Multiple Junction (SMJ) and Joint Connectors (J/C) exists on the PG section. Refer to "Reference Area" for details. Revision; 2004 April GI-18 2003 G35 Coupe HOW TO USE THIS MANUAL Harness Indication q Letter designations next to test meter probe indicate harness (connector) wire color. q Connector numbers in a single circle M33 indicate harness con- nectors. Component Indication Connector numbers in a double circle F211 indicate component connectors. Switch Positions Switches are shown in wiring diagrams as if the vehicle is in the "normal" condition. A vehicle is in the "normal" condition when: q ignition switch is "OFF", q doors, hood and trunk lid/back door are closed, q pedals are not depressed, and q parking brake is released. GI B C D E F G AGI070 H I J K L M Revision; 2004 April GI-19 SGI860 2003 G35 Coupe HOW TO USE THIS MANUAL Detectable Lines and Non-Detectable Lines In some wiring diagrams, two kinds of lines, representing wires, with different weight are used. q A line with regular weight (wider line) represents a "detectable line for DTC (Diagnostic Trouble Code)". A "detectable line for DTC" is a circuit in which ECM can detect its malfunctions with the on board diagnostic system. q A line with less weight (thinner line) represents a "non-detectable line for DTC". A "non-detectable line for DTC" is a circuit in which ECM cannot detect its malfunctions with the on board diagnostic system. SGI862-B Revision; 2004 April GI-20 2003 G35 Coupe HOW TO USE THIS MANUAL Multiple Switch The continuity of multiple switch is described in two ways as shown below. q The switch chart is used in schematic diagrams. q The switch diagram is used in wiring diagrams. GI B C D E F G H I J K SGI875 L M Revision; 2004 April GI-21 2003 G35 Coupe HOW TO USE THIS MANUAL Reference Area The Reference Area of the wiring diagram contains references to additional electrical reference pages at the end of the manual. If connector numbers and titles are shown in the Reference Area of the wiring diagram, these connector symbols are not shown in the Connector Area. Revision; 2004 April GI-22 SGI092A 2003 G35 Coupe HOW TO USE THIS MANUAL Abbreviations The following ABBREVIATIONS are used: ABBREVIATION A/C Air Conditioner A/T Automatic Transaxle/Transmission ATF Automatic Transmission Fluid D1 Drive range 1st gear D2 Drive range 2nd gear D3 Drive range 3rd gear D4 Drive range 4th gear FR, RR Front, Rear LH, RH Left-Hand, Right-Hand M/T Manual Transaxle/Transmission OD Overdrive P/S Power Steering SAE Society of Automotive Engineers, Inc. SDS Service Data and Specifications SST Special Service Tools 2WD 2-Wheel Drive 22 2nd range 2nd gear 21 2nd range 1st gear 12 1st range 2nd gear 11 1st range 1st gear DESCRIPTION AAS0009A GI B C D E F G H I J K L M Revision; 2004 April GI-23 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT SERVICE INFORMATION FOR ELECTRICAL INCIDENT PFP:00000 How to Check Terminal CONNECTOR AND TERMINAL PIN KIT AAS0009B Use the connector and terminal pin kits listed below when replacing connectors or terminals. The connector and terminal pin kits contain some of the most commonly used NISSAN/INFINITI connectors and terminals. For detailed connector and terminal pin replacement procedures, refer to the latest NISSAN/ INFINITI CONNECTOR AND TERMINAL PIN SERVICE MANUAL. Tool number (Kent-Moore No.) Tool name Description (J38751-95NI) Connector and terminal pin kit (NISSAN) (J38751-95INF) Connector and terminal pin kit (INFINITI) (J42992-98KIT) OBD and terminal repair kit (J42992-2000UPD) OBD-II Connector Kit Update WAIA0004E WAIA0005E HOW TO PROBE CONNECTORS Connector damage and an intermittent connection can result from improperly probing of the connector during circuit checks. The probe of a digital multimeter (DMM) may not correctly fit the connector cavity. To correctly probe the connector, follow the procedures below using a "T" pin. For the best contact grasp the "T" pin using an alligator clip. Probing from Harness Side Standard type (not waterproof type) connector should be probed from harness side with "T" pin. q If the connector has a rear cover such as a ECM connector, remove the rear cover before probing the terminal. q Do not probe waterproof connector from harness side. Damage to the seal between wire and connector may result. SGI841 Probing from Terminal Side FEMALE TERMINAL q There is a small notch above each female terminal. Probe each terminal with the "T" pin through the notch. Do not insert any object other than the same type male terminal into female terminal. Revision; 2004 April GI-24 SEL265V 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT q Some connectors do not have a notch above each terminal. To probe each terminal, remove the connector retainer to make GI contact space for probing. B MALE TERMINAL Carefully probe the contact surface of each terminal using a "T" pin. Do not bend terminal. C SEL266V D E F G SEL267V How to Check Enlarged Contact Spring of Terminal H An enlarged contact spring of a terminal may create intermittent signals in the circuit. If the intermittent open circuit occurs, follow the procedure below to inspect for open wires and enlarged con- tact spring of female terminal. I 1. Assemble a male terminal and approx. 10 cm (3.9 in) of wire. Use a male terminal which matches the female terminal. 2. Disconnect the suspected faulty connector and hold it terminal side up. J K 3. While holding the wire of the male terminal, try to insert the male terminal into the female terminal. Do not force the male terminal into the female terminal with your hands. L SEL270V M SEL271V Revision; 2004 April GI-25 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT 4. While moving the connector, check whether the male terminal can be easily inserted or not. q If the male terminal can be easily inserted into the female terminal, replace the female terminal. SEL272V Waterproof Connector Inspection If water enters the connector, it can short interior circuits. This may lead to intermittent problems. Check the following items to maintain the original waterproof characteristics. RUBBER SEAL INSPECTION q Most waterproof connectors are provided with a rubber seal between the male and female connectors. If the seal is missing, the waterproof performance may not meet specifications. q The rubber seal may come off when connectors are disconnected. Whenever connectors are reconnected, make sure the rubber seal is properly installed on either side of male or female connector. SEL273V SEL275V WIRE SEAL INSPECTION The wire seal must be installed on the wire insertion area of a waterproof connector. Be sure that the seal is installed properly. Terminal Lock Inspection Check for unlocked terminals by pulling wire at the end of connector. An unlocked terminal may create intermittent signals in the circuit. Revision; 2004 April GI-26 SEL330V 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT How to Perform Efficient Diagnosis for an Electrical Incident WORK FLOW AAS0009C GI B C D E F SGI838 G STEP DESCRIPTION Get detailed information about the conditions and the environment when the incident occurred. The following are key pieces of information required to make a good analysis: H WHAT Vehicle Model, Engine, Transmission/Transaxle and the System (i.e. Radio). STEP 1 WHEN Date, Time of Day, Weather Conditions, Frequency. I WHERE Road Conditions, Altitude and Traffic Situation. HOW System Symptoms, Operating Conditions (Other Components Interaction). Service History and if any After Market Accessories have been installed. J Operate the system, road test if necessary. STEP 2 Verify the parameter of the incident. If the problem cannot be duplicated, refer to "Incident Simulation Tests". K Get the proper diagnosis materials together including: q Power Supply Routing STEP 3 q System Operation Descriptions L q Applicable Service Manual Sections q Check for any Service Bulletins Identify where to begin diagnosis based upon your knowledge of the system operation and the customer comments. M STEP 4 Inspect the system for mechanical binding, loose connectors or wiring damage. Determine which circuits and components are involved and diagnose using the Power Supply Routing and Harness Layouts. STEP 5 Repair or replace the incident circuit or component. STEP 6 Operate the system in all modes. Verify the system works properly under all conditions. Make sure you have not inadvertently created a new incident during your diagnosis or repair steps. INCIDENT SIMULATION TESTS Introduction Sometimes the symptom is not present when the vehicle is brought in for service. If possible, re-create the conditions present at the time of the incident. Doing so may help avoid a No Trouble Found Diagnosis. The following section illustrates ways to simulate the conditions/environment under which the owner experiences an electrical incident. The section is broken into the six following topics: q Vehicle vibration q Heat sensitive Revision; 2004 April GI-27 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT q Freezing q Water intrusion q Electrical load q Cold or hot start up Get a thorough description of the incident from the customer. It is important for simulating the conditions of the problem. Vehicle Vibration The problem may occur or become worse while driving on a rough road or when engine is vibrating (idle with A/C on). In such a case, you will want to check for a vibration related condition. Refer to the following illustration. CONNECTORS & HARNESS Determine which connectors and wiring harness would affect the electrical system you are inspecting. Gently shake each connector and harness while monitoring the system for the incident you are trying to duplicate. This test may indicate a loose or poor electrical connection. HINT Connectors can be exposed to moisture. It is possible to get a thin film of corrosion on the connector terminals. A visual inspection may not reveal this without disconnecting the connector. If the problem occurs intermittently, perhaps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean the terminals on related connectors in the system. SENSORS & RELAYS Gently apply a slight vibration to sensors and relays in the system you are inspecting. This test may indicate a loose or poorly mounted sensor or relay. SGI839 ENGINE COMPARTMENT There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the things to check for are: q Connectors not fully seated. q Wiring harness not long enough and is being stressed due to engine vibrations or rocking. q Wires laying across brackets or moving components. q Loose, dirty or corroded ground wires. q Wires routed too close to hot components. To inspect components under the hood, start by verifying the integrity of ground connections. (Refer to Ground Inspection described later.) First check that the system is properly grounded. Then check for loose connection by gently shaking the wiring or components as previously explained. Using the wiring diagrams inspect the wiring for continuity. BEHIND THE INSTRUMENT PANEL An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehicle vibration can aggravate a harness which is routed along a bracket or near a screw. Revision; 2004 April GI-28 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT UNDER SEATING AREAS An unclamped or loose harness can cause wiring to be pinched by seat components (such as slide guides) GI during vehicle vibration. If the wiring runs under seating areas, inspect wire routing for possible damage or pinching. Heat Sensitive B The customer's concern may occur during hot weather or after car has sat for a short time. In such cases you will want to check for a heat sensitive condition. C To determine if an electrical component is heat sensitive, heat the component with a heat gun or equivalent. Do not heat components above 60°C (140°F). If incident occurs while heating the unit, either replace or properly insulate the compo- D nent. Freezing The customer may indicate the incident goes away after the car warms up (winter time). The cause could be related to water freezing somewhere in the wiring/electrical system. There are two methods to check for this. The first is to arrange for the owner to leave his car overnight. Make sure it will get cold enough to demonstrate his complaint. Leave the car parked outside overnight. In the morning, do a quick and thorough diagnosis of those electrical components which could be affected. The second method is to put the suspect component into a freezer long enough for any water to freeze. Reinstall the part into the car and check for the reoccurrence of the incident. If it occurs, repair or replace the component. Water Intrusion The incident may occur only during high humidity or in rainy/snowy weather. In such cases the incident could be caused by water intrusion on an electrical part. This can be simulated by soaking the car or running it through a car wash. Do not spray water directly on any electrical components. E SGI842 F G H I SGI843 J K L Electrical Load The incident may be electrical load sensitive. Perform diagnosis with all accessories (including A/C, rear window defogger, radio, fog lamps) turned on. M SGI844 Revision; 2004 April GI-29 SGI845 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT Cold or Hot Start Up On some occasions an electrical incident may occur only when the car is started cold, or it may occur when the car is restarted hot shortly after being turned off. In these cases you may have to keep the car overnight to make a proper diagnosis. CIRCUIT INSPECTION Introduction In general, testing electrical circuits is an easy task if it is approached in a logical and organized method. Before beginning it is important to have all available information on the system to be tested. Also, get a thorough understanding of system operation. Then you will be able to use the appropriate equipment and follow the correct test procedure. You may have to simulate vehicle vibrations while testing electrical components. Gently shake the wiring harness or electrical component to do this. OPEN A circuit is open when there is no continuity through a section of the circuit. SHORT There are two types of shorts. q SHORT CIRCUIT q SHORT TO GROUND When a circuit contacts another circuit and causes the normal resistance to change. When a circuit contacts a ground source and grounds the circuit. NOTE: Refer to "How to Check Terminal" to probe or check terminal. Testing for "Opens" in the Circuit Before you begin to diagnose and test the system, you should rough sketch a schematic of the system. This will help you to logically walk through the diagnosis process. Drawing the sketch will also reinforce your working knowledge of the system. SGI846-A CONTINUITY CHECK METHOD The continuity check is used to find an open in the circuit. The digital multimeter (DMM) set on the resistance function will indicate an open circuit as over limit (no beep tone or no ohms symbol). Make sure to always start with the DMM at the highest resistance level. To help in understanding the diagnosis of open circuits, please refer to the previous schematic. q Disconnect the battery negative cable. q Start at one end of the circuit and work your way to the other end. (At the fuse block in this example) q Connect one probe of the DMM to the fuse block terminal on the load side. q Connect the other probe to the fuse block (power) side of SW1. Little or no resistance will indicate that portion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infinite resistance condition. (point A) q Connect the probes between SW1 and the relay. Little or no resistance will indicate that portion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infinite resistance condition. (point B) q Connect the probes between the relay and the solenoid. Little or no resistance will indicate that portion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infinite resistance condition. (point C) Any circuit can be diagnosed using the approach in the previous example. Revision; 2004 April GI-30 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT VOLTAGE CHECK METHOD To help in understanding the diagnosis of open circuits please refer to the previous schematic. GI In any powered circuit, an open can be found by methodically checking the system for the presence of voltage. This is done by switching the DMM to the voltage function. q Connect one probe of the DMM to a known good ground. B q Begin probing at one end of the circuit and work your way to the other end. q With SW1 open, probe at SW1 to check for voltage. voltage; open is further down the circuit than SW1. C no voltage; open is between fuse block and SW1 (point A). q Close SW1 and probe at relay. voltage; open is further down the circuit than the relay. no voltage; open is between SW1 and relay (point B). D q Close the relay and probe at the solenoid. voltage; open is further down the circuit than the solenoid. no voltage; open is between relay and solenoid (point C). E Any powered circuit can be diagnosed using the approach in the previous example. Testing for "Shorts" in the Circuit F To simplify the discussion of shorts in the system, please refer to the following schematic. G H I RESISTANCE CHECK METHOD SGI847-A J q Disconnect the battery negative cable and remove the blown fuse. q Disconnect all loads (SW1 open, relay disconnected and solenoid disconnected) powered through the K fuse. q Connect one probe of the DMM to the load side of the fuse terminal. Connect the other probe to a known good ground. L q With SW1 open, check for continuity. continuity; short is between fuse terminal and SW1 (point A). no continuity; short is further down the circuit than SW1. M q Close SW1 and disconnect the relay. Put probes at the load side of fuse terminal and a known good ground. Then, check for continuity. continuity; short is between SW1 and the relay (point B). no continuity; short is further down the circuit than the relay. q Close SW1 and jump the relay contacts with jumper wire. Put probes at the load side of fuse terminal and a known good ground. Then, check for continuity. continuity; short is between relay and solenoid (point C). no continuity; check solenoid, retrace steps. VOLTAGE CHECK METHOD q Remove the blown fuse and disconnect all loads (i.e. SW1 open, relay disconnected and solenoid disconnected) powered through the fuse. q Turn the ignition key to the ON or START position. Verify battery voltage at the battery + side of the fuse terminal (one lead on the battery + terminal side of the fuse block and one lead on a known good ground). q With SW1 open and the DMM leads across both fuse terminals, check for voltage. voltage; short is between fuse block and SW1 (point A). Revision; 2004 April GI-31 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT no voltage; short is further down the circuit than SW1. q With SW1 closed, relay and solenoid disconnected and the DMM leads across both fuse terminals, check for voltage. voltage; short is between SW1 and the relay (point B). no voltage; short is further down the circuit than the relay. q With SW1 closed, relay contacts jumped with fused jumper wire check for voltage. voltage; short is down the circuit of the relay or between the relay and the disconnected solenoid (point C). no voltage; retrace steps and check power to fuse block. Ground Inspection Ground connections are very important to the proper operation of electrical and electronic circuits. Ground connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can become an unwanted resistance. This unwanted resistance can change the way a circuit works. Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drastically affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even when the ground connection looks clean, there can be a thin film of rust on the surface. When inspecting a ground connection follow these rules: q Remove the ground bolt or screw. q Inspect all mating surfaces for tarnish, dirt, rust, etc. q Clean as required to assure good contact. q Reinstall bolt or screw securely. q Inspect for "add-on" accessories which may be interfering with the ground circuit. q If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one eyelet make sure no ground wires have excess wire insulation. For detailed ground distribution information, refer to "Ground Distribution" in PG section. SGI853 Voltage Drop Tests Voltage drop tests are often used to find components or circuits which have excessive resistance. A voltage drop in a circuit is caused by a resistance when the circuit is in operation. Check the wire in the illustration. When measuring resistance with DMM, contact by a single strand of wire will give reading of 0 ohms. This would indicate a good circuit. When the circuit operates, this single strand of wire is not able to carry the current. The single strand will have a high resistance to the current. This will be picked up as a slight voltage drop. Unwanted resistance can be caused by many situations as follows: q Undersized wiring (single strand example) q Corrosion on switch contacts q Loose wire connections or splices. Revision; 2004 April GI-32 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT If repairs are needed always use wire that is of the same or larger gauge. GI MEASURING VOLTAGE DROP -- ACCUMULATED METHOD q Connect the DMM across the connector or part of the circuit you want to check. The positive lead of the DMM should be closer to power and the negative lead closer to ground. B q Operate the circuit. q The DMM will indicate how many volts are being used to "push" current through that part of the circuit. Note in the illustration that there is an excessive 4.1 volt drop between the battery and the bulb. C D E F G H SGI974 I MEASURING VOLTAGE DROP -- STEP-BY-STEP The step-by-step method is most useful for isolating excessive drops in low voltage systems (such as those in J "Computer Controlled Systems"). Circuits in the "Computer Controlled System" operate on very low amperage. The (Computer Controlled) system operations can be adversely affected by any variation in resistance in the system. Such resistance variation may be caused by poor connection, improper installation, improper wire K gauge or corrosion. The step by step voltage drop test can identify a component or wire with too much resistance. L M Revision; 2004 April GI-33 SAIA0258E 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT Control Unit Circuit Test System Description:When the switch is ON, the control unit lights up the lamp. MGI034A INPUT-OUTPUT VOLTAGE CHART Pin No. Item Condition Voltage value [V] In case of high resistance such as single strand [V] * Switch ON 1 Switch Switch OFF Battery voltage Approx. 0 Lower than battery voltage Approx. 8 (Example) Approx. 0 Switch ON 2 Lamp Switch OFF Battery voltage Approx. 0 Approx. 0 (Inoperative lamp) Approx. 0 The voltage value is based on the body ground. *:If high resistance exists in the switch side circuit (caused by a single strand), terminal 1 does not detect battery voltage. Control unit does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not supply power to light up the lamp. MGI035A INPUT-OUTPUT VOLTAGE CHART Pin No. Item Condition Voltage value [V] In case of high resistance such as single strand [V] * Switch ON Approx. 0 1 Lamp Switch OFF Battery voltage Battery voltage (Inoperative lamp) Battery voltage Switch ON Approx. 0 2 Switch Switch OFF Approx. 5 Higher than 0 Approx. 4 (Example) Approx. 5 The voltage value is based on the body ground. *:If high resistance exists in the switch side circuit (caused by a single strand), terminal 2 does not detect approx. 0V. Control unit does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not control ground to light up the lamp. Revision; 2004 April GI-34 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT Control Units and Electrical Parts PRECAUTIONS q Never reverse polarity of battery terminals. q Install only parts specified for a vehicle. q Before replacing the control unit, check the input and output and functions of the component parts. q Do not apply excessive force when disconnecting a connector. q If a connector is installed by tightening bolts, loosen bolt mount- ing it, then take it out by hand. q Before installing a connector, make sure the terminal is not bent or damaged, and then correctly connect it. When installing a connector by tightening bolts, fix it by tightening the mounting bolt until the painted projection of the connector becomes even with the surface. q For removal of the lever type connector, pull the lever up to the direction pointed to by the arrow A in the figure, and then remove the connector. q For installation of the lever type connector, pull down the lever to the direction pointed by the arrow B in the figure, and then push the connector until a clicking noise is heard. AAS0009D GI B C D SAIA0251E E F G H SAIA0252E I J K SAIA0253E L M SAIA0254E Revision; 2004 April GI-35 2003 G35 Coupe SERVICE INFORMATION FOR ELECTRICAL INCIDENT q Do not apply excessive shock to the control unit by dropping or hitting it. q Be careful to prevent condensation in the control unit due to rapid temperature changes and do not let water or rain get on it. If water is found in the control unit, dry it fully and then install it in the vehicle. q Be careful not to let oil to get on the control unit connector. q Avoid cleaning the control unit with volatile oil. q Do not disassemble the control unit, and do not remove the upper and lower covers. q When using a DMM, be careful not to let test probes get close to each other to prevent the power transistor in the control unit from damaging battery voltage because of short circuiting. q When checking input and output signals of the control unit, use the specified check adapter. SAIA0255E SMJ INSTALLATION To install SMJ, tighten bolts until orange "fulltight" mark appears and then retighten to specified torque as required. SMJ :3 - 5 N·m (0.3 - 0.5 kg-m, 26 - 43 in-lb) CAUTION: Do not overtighten bolts, otherwise, they may be damaged. SEF348N CEL969 Revision; 2004 April GI-36 2003 G35 Coupe CONSULT-II CHECKING SYSTEM CONSULT-II CHECKING SYSTEM Description PFP:00000 GI AAS0009E q CONSULT-II is a hand-held type tester. When it is connected with a diagnostic connector equipped on the vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various B kinds of diagnostic tests. q Refer to "CONSULT-II Software Operation Manual" for more information. Function and System Application C AAS0009F ENGINE A/T ABS (Including VDC) AIR BAG BCM IVIS(NATS)* D Diagnostic test mode Function E Work support This mode enables a technician to adjust some devices faster and more accurately by following the indications on CONSULT-II. x - x - x - F Self-diagnostic results Self-diagnostic results can be read and erased quickly. xxx x x x Trouble diagnostic record Current self-diagnostic results and all trouble diagnostic records previously stored can be read. ---x- - G Data monitor Input/Output data in the ECM can be read. xxx - x - CAN diagnosis support monitor Indicates the communication condition of CAN communication line. xxx - x - H Active test DTC confirmation Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also shifts some parameters in a specified range. x - x - x - I The results of SRT (System Readiness Test) and the self-diagnosis status/result can be confirmed. x - - - - - DTC work support ECM/ECU part number Select the operating condition to confirm Diagnosis Trouble Codes. ECM/ECU part number can be read. -x- - - - J xxx - - - ECU discriminated No. Classification number of a replacement ECU can be read to prevent an incorrect ECU from being installed. - - - x - - K Function test Conducted by CONSULT-II instead of a technician to determine whether each system is "OK" or "NG". x x x x - - Control unit initialization All registered ignition key IDs in NATS components can be initialized and new IDs can be registered. --- - -x L x:Applicable *:IVIS(NATS) [INFINITI Vehicle Immobilizer System (Nissan Anti-Theft System) Nickel Metal Hydride Battery Replacement M AAS0009G CONSULT-II contains a nickel metal hydride battery. When replacing the battery obey the following: WARNING: Replace the nickel metal hydride battery with Genuine CONSULT-II battery only. Use of another battery may present a risk of fire or explosion. The battery may present a fire or chemical burn hazard if mistreated. Do not recharge, disassemble or dispose of in fire. Keep the battery out of reach of children and discard used battery conforming to the local regulations. Revision; 2004 April GI-37 2003 G35 Coupe CONSULT-II CHECKING SYSTEM Checking Equipment When ordering the following equipment, contact your NISSAN/INFINITI distributor. Tool name Description NISSAN CONSULT-II 1. CONSULT-II unit (Tester internal soft: Resident version 3.3.0) and accessories 2. Program card AED03E and AEN02C (For NATS) 3. CONSULT-II CONVERTER 4. "CONSULT-II" Pigtail cable SAIA0363E NOTE: q The CONSULT-II must be used in conjunction with a program card. CONSULT-II does not require loading (Initialization) procedure. q Be sure the CONSULT-II is turned off before installing or removing a program card. CONSULT-II Start Procedure 1. Turn off the ignition switch. 2. Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector. AAS0009H AAS0009I 3. Turn on the ignition switch. 4. Touch "START(NISSAN BASED VHCL)" or "System Shortcut" (eg : ENGINE) on the screen. PAIA0070E SAIA0450E Revision; 2004 April GI-38 2003 G35 Coupe CONSULT-II CHECKING SYSTEM CONSULT-II Data Link Connector (DLC) Circuit AAS0009J GI B C D E F G H I J K L M Revision; 2004 April GI-39 TAWT0003E 2003 G35 Coupe CONSULT-II CHECKING SYSTEM INSPECTION PROCEDURE If the CONSULT-II cannot diagnose the system properly, check the following items. Symptom Check item CONSULT-II cannot access any system. q CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4) (For detailed circuit, refer to "MIL & Data Link Connectors Wiring Diagram" in EC section.) q CONSULT-II DLC cable and CONSULT-II CONVERTER. CONSULT-II cannot access individual system. (Other systems can be accessed.) q CONSULT-II program card (Check the appropriate CONSULT-II program card for the system. Refer to "Checking Equipment".) q Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wiring diagram for each system.) q Open or short circuit between the system and CONSULT-II DLC (For detailed circuit, refer to wiring diagram for each system.) NOTE: The DDL1 and DDL2 circuits from DLC pins 12, 13, 14 and 15 may be connected to more than one system. A short in a DDL circuit connected to a control unit in one system may affect CONSULT-II access to other systems. Revision; 2004 April GI-40 2003 G35 Coupe LIFTING POINT LIFTING POINT Special Service Tools PFP:00000 GI AAS0009K The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Tool number (Kent-Moore No.) B Description Tool name C LM4086-0200 ( - ) D Board on attachment S-NT001 E LM4519-0000 F ( - ) Safety stand attachment G S-NT002 CAUTION: q Every time the vehicle is lifted up, maintain the complete vehicle curb condition. H q Since the vehicle's center of gravity changes when removing main parts on the front side (engine, transmission, suspension etc.), support a jack up point on the rear side garage jack with a mission jack or equivalent. I q Since the vehicle's center of gravity changes when removing main parts on the rear side (rear axle, suspension, etc.), support a jack up point on the front side garage jack with a mission jack or equivalent. J q Be careful not to smash or do not do anything that would affect piping parts. Garage Jack and Safety Stand AAS0009L WARNING: K q Park the vehicle on a level surface when using the jack. Make sure to avoid damaging pipes, tubes, etc. under the vehicle. q Never get under the vehicle while it is supported only by the jack. Always use safety stands when L you have to get under the vehicle. M Revision; 2004 April GI-41 2003 G35 Coupe LIFTING POINT q Place wheel chocks at both front and back of the wheels on the ground. PAIA0073E 2-Pole Lift AAS0009M WARNING: When lifting the vehicle, open the lift arms as wide as possible and ensure that the front and rear of the vehicle are well balanced. When setting the lift arm, do not allow the arm to contact the brake tubes, brake cable, fuel lines and sill spoiler. Revision; 2004 April GI-42 PAIA0074E 2003 G35 Coupe LIFTING POINT Board-On Lift CAUTION: Make sure vehicle is empty when lifting. q The board-on lift attachment (LM4086-0200) set at front end of vehicle should be set on the front of the sill under the front door opening. q Position attachments at front and rear ends of board-on lift. AAS0009N GI B C D AGI016 E F G H I J K L M Revision; 2004 April GI-43 2003 G35 Coupe TOW TRUCK TOWING TOW TRUCK TOWING Tow Truck Towing CAUTION: q All applicable state or Provincial (in Canada) laws and local laws regarding the towing operation must be obeyed. q It is necessary to use proper towing equipment to avoid possible damage to the vehicle during towing operation. Towing is in accordance with Towing Procedure Manual at dealer. q Always attach safety chains before towing. q When towing, make sure that the transmission, steering system and power train are in good order. If any unit is damaged, dollies must be used. q Never tow an automatic transmission model from the rear (that is backward) with four wheels on the ground. This may cause serious and expensive damage to the transmission. NISSAN / INFINITI recommends that the vehicle be towed with the driving (rear) wheels off the ground as illustrated. CAUTION: When towing with the front wheels on the ground (if a towing dollies does not be used), turn the ignition key to the OFF position, and secure the steering wheel in the straight-ahead position with a rope or similar device. Never place the ignition key in the LOCK position. This will result in damage to the steering lock mechanism. PFP:00000 AAS0009O SGI994 Revision; 2004 April GI-44 PAIA0063E 2003 G35 Coupe TOW TRUCK TOWING Vehicle Recovery (Freeing a Stuck Vehicle) FRONT After removing the front licence plate (if so equipped) or the towing hook cover, securely install the towing hook. q Tow chains or cables must be attached only to the main struc- tural members of the vehicle. q Pulling devices should be routed so they do not touch any part of the suspension, steering, brake or cooling systems. q Always pull the cable straight out from the front or rear of the vehicle. Never pull on the vehicle at an angle. q Pulling devices such as ropes or canvas straps are not recom- mended for use in vehicle towing or recovery. q Stand clear of a stuck vehicle. REAR q Towing hook is not available. AAS0009P GI B C D PAIA0075E E F G H I J K L M Revision; 2004 April GI-45 2003 G35 Coupe TIGHTENING TORQUE OF STANDARD BOLTS TIGHTENING TORQUE OF STANDARD BOLTS Tightening Torque Table PFP:00000 AAS0009Q Grade Bolt diamBolt size eter * mm Pitch mm Tightening torque (Without lubricant) Hexagon head bolt Hexagon flange bolt N·m kg-m ft-lb in-lb N·m kg-m ft-lb in-lb M6 6.0 1.0 5.5 0.56 4 49 7 0.71 5 62 M8 8.0 1.25 13.5 1.4 10 -- 17 1.7 13 -- 1.0 13.5 1.4 10 -- 17 1.7 13 -- 1.5 28 2.9 21 -- 35 3.6 26 -- 4T M10 10.0 1.25 28 2.9 21 -- 35 3.6 26 -- 1.75 45 4.6 33 -- 55 5.6 41 -- M12 12.0 1.25 45 4.6 33 -- 65 6.6 48 -- M14 14.0 1.5 80 8.2 59 -- 100 10 74 -- M6 6.0 1.0 9 0.92 7 80 11 1.1 8 97 M8 8.0 1.25 22 2.2 16 -- 28 2.9 21 -- 1.0 22 2.2 16 -- 28 2.9 21 -- 1.5 45 4.6 33 -- 55 5.6 41 -- 7T M10 10.0 1.25 45 4.6 33 -- 55 5.6 41 -- 1.75 80 8.2 59 -- 100 10 74 -- M12 12.0 1.25 80 8.2 59 -- 100 10 74 -- M14 14.0 1.5 130 13 96 -- 170 17 125 -- M6 6.0 1.0 11 1.1 8 -- 13.5 1.4 10 -- M8 8.0 1.25 28 2.9 21 -- 35 3.6 26 -- 1.0 28 2.9 21 -- 35 3.6 26 -- 1.5 55 5.6 41 -- 80 8.2 59 -- 9T M10 10.0 1.25 55 5.6 41 -- 80 8.2 59 -- 1.75 100 10 74 -- 130 13 96 -- M12 12.0 1.25 100 10 74 -- 130 13 96 -- M14 14.0 1.5 170 17 125 -- 210 21 155 -- *: Nominal diameter 1. Special parts are excluded. 2. This standard is applicable to bolts having the following marks embossed on the bolt head. Revision; 2004 April GI-46 MGI044A 2003 G35 Coupe RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS Recommended Chemical Products and Sealants PFP:00000 GI AAS0009R Refer to the following chart for help in selecting the appropriate chemical product or sealant. Product Description Purpose Nissan North America Nissan Canada Part Aftermarket Cross- B Part No. (USA) No. (Canada) reference Part Nos. 1 Rear View Mirror Adhesive Used to permanently remount rear view mirrors to windows. 999MP-AM000P 99998-50505 Permatex 81844 C For metal-to-metal flange sealing. 2 Anaerobic Liquid Gasket Can fill a 0.38 mm (0.015 inch) gap and provide instant sealing for most powertrain applications. 999MP-AM001P 99998-50503 D Permatex 51813 and 51817 E 3 High Performance Thread Sealant Provides instant sealing on any threaded straight or parallel threaded fitting. (Thread sealant only, no locking ability.) q Do not use on plastic. 999MP-AM002P 4 Silicone RTV Gasket Maker 999MP-AM003P (Ultra Grey) Gasket Maker for Maxima/ Quest 5-speed automatic transmission (RE5F22A) High Temperature, 5 High Strength Thread Threadlocker Locking Sealant (Red) 999MP-AM004P Medium Strength 6 Thread Locking Seal- ant (Blue) Threadlocker (service tool removable) 999MP-AM005P 999MP-AM002P 99998-50506 (Ultra Grey) 999MP-AM004P 999MP-AM005P Permatex 56521 F Permatex Ultra Grey G 82194; Three Bond 1207,1215, 1216, H 1217F and 1217G; Nissan RTV Part No. 999MP-A7007 I Three Bond 1281B or exact equivalent in its quality J Permatex 27200; Three Bond 1360, 1360N, 1305 N&P, 1307N, 1335, K 1335B, 1363B, 1377C, 1386B, D&E and 1388 L Permatex 24200, 24206, 24240, 24283 and 09178; Three Bond 1322, M 1322N, 1324 D&N, 1333D, 1361C, 1364D, 1370C and 1374 Revision; 2004 April GI-47 2003 G35 Coupe IDENTIFICATION INFORMATION IDENTIFICATION INFORMATION Model Variation Body Coupe Engine VQ35DE Transmission RE5R05A(5A/T) FS6R31A(6M/T) RE5R05A(5A/T) Prefix and suffix designations: FS6R31A(6M/T) Model GLJALDN V35 EUA GLJALFN V35 EUA GLJALVY V35 EUA GLJALDN V35 ENA GLJALFN V35 ENA GLJALVY V35 ENA PFP:00010 Destination AAS0009S USA Canada PAIA0255E Revision; 2004 April GI-48 2003 G35 Coupe IDENTIFICATION INFORMATION IDENTIFICATION NUMBER Vehicle Identification Number Arrangement IDENTIFICATION PLATE GI B C D E F PAIA0077E G H I J K L M PAIA0078E Revision; 2004 April GI-49 SGI315 2003 G35 Coupe IDENTIFICATION INFORMATION ENGINE SERIAL NUMBER AUTOMATIC TRANSMISSION NUMBER PAIA0051E MANUAL TRANSMISSION NUMBER PAIA0069E Dimensions Overall length Overall width Overall height Front tread Rear tread Wheelbase *1: The wheel offset is 1.30 in (33 mm). *2: The wheel offset is 1.18 in (30 mm). PAIA0068E 4,628 (182.2) 1,815 (71.5) 1,393 (54.8) 1,535 (60.4) 1,540 (60.6)*1, 1,545 (60.8)*2 2,850 (112.2) AAS0009T Unit: mm (in) Revision; 2004 April GI-50 2003 G35 Coupe IDENTIFICATION INFORMATION Wheels & Tires Type Road wheel Aluminum Tire *: For option Conventional Spare Front Rear Front Rear Size Offset in (mm) 17 X7 - 1/2 JJ 18 X 8 JJ 1.18 (30) 17 X8 JJ 1.30 (33) 18 X8 JJ 1.18 (30) P225/50R17 93V P225/45R18 91W P235/50R17 95V P245/45R18 96W T145/90D 16 T155/80R 17* Conventional* AAS0009U GI B C D E F G H I J K L M Revision; 2004 April GI-51 2003 G35 Coupe TERMINOLOGY TERMINOLOGY PFP:00011 SAE J1930 Terminology List AAS0009V All emission related terms used in this publication in accordance with SAE J1930 are listed. Accordingly, new terms, new acronyms/abbreviations and old terms are listed in the following chart. NEW TERM NEW ACRONYM / ABBREVIATION OLD TERM Air cleaner ACL Air cleaner Barometric pressure BARO *** Barometric pressure sensor-BCDD BAROS-BCDD BCDD Camshaft position CMP *** Camshaft position sensor CMPS Crank angle sensor Canister *** Canister Carburetor CARB Carburetor Charge air cooler CAC Intercooler Closed loop CL Closed loop Closed throttle position switch CTP switch Idle switch Clutch pedal position switch CPP switch Clutch switch Continuous fuel injection system CFI system *** Continuous trap oxidizer system CTOX system *** Crankshaft position CKP *** Crankshaft position sensor CKPS *** Data link connector DLC *** Data link connector for CONSULT-II DLC for CONSULT-II Diagnostic connector for CONSULT-II Diagnostic test mode DTM Diagnostic mode Diagnostic test mode selector DTM selector Diagnostic mode selector Diagnostic test mode I DTM I Mode I Diagnostic test mode II DTM II Mode II Diagnostic trouble code DTC Malfunction code Direct fuel injection system DFI system *** Distributor ignition system DI system Ignition timing control Early fuel evaporation-mixture heater EFE-mixture heater Mixture heater Early fuel evaporation system EFE system Mixture heater control Electrically erasable programmable read only memory EEPROM *** Electronic ignition system EI system Ignition timing control Engine control EC *** Engine control module ECM ECCS control unit Engine coolant temperature ECT Engine temperature Engine coolant temperature sensor ECTS Engine temperature sensor Engine modification EM *** Engine speed RPM Engine speed Erasable programmable read only memory EPROM *** Evaporative emission canister EVAP canister Canister Evaporative emission system EVAP system Canister control solenoid valve Exhaust gas recirculation valve EGR valve EGR valve Revision; 2004 April GI-52 2003 G35 Coupe TERMINOLOGY NEW TERM NEW ACRONYM / ABBREVIATION Exhaust gas recirculation control-BPT valve EGRC-BPT valve Exhaust gas recirculation control-solenoid valve EGRC-solenoid valve Exhaust gas recirculation temperature sen- sor EGRT sensor EGR temperature sensor Flash electrically erasable programmable read only memory FEEPROM Flash erasable programmable read only memory FEPROM Flexible fuel sensor FFS Flexible fuel system FF system Fuel pressure regulator *** Fuel pressure regulator control solenoid valve *** Fuel trim FT Heated Oxygen sensor HO2S Idle air control system IAC system Idle air control valve-air regulator IACV-air regulator Idle air control valve-auxiliary air control valve IACV-AAC valve Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve Idle air control valve-idle up control solenoid valve IACV-idle up control solenoid valve Idle speed control-FI pot ISC-FI pot Idle speed control system ISC system Ignition control IC Ignition control module ICM Indirect fuel injection system IFI system Intake air IA Intake air temperature sensor IAT sensor Knock *** Knock sensor KS Malfunction indicator lamp MIL Manifold absolute pressure MAP Manifold absolute pressure sensor MAPS Manifold differential pressure MDP Manifold differential pressure sensor MDPS Manifold surface temperature MST Manifold surface temperature sensor MSTS Manifold vacuum zone MVZ Manifold vacuum zone sensor MVZS Mass air flow sensor MAFS Mixture control solenoid valve MC solenoid valve Multiport fuel injection System MFI system Revision; 2004 April GI-53 OLD TERM GI BPT valve B EGR control solenoid valve Exhaust gas temperature sensor C *** D *** *** E *** Pressure regulator F PRVR control solenoid valve *** G Exhaust gas sensor Idle speed control Air regulator H Auxiliary air control (AAC) valve FICD solenoid valve I Idle up control solenoid valve J FI pot *** *** K *** *** Air L Air temperature sensor Detonation M Detonation sensor Check engine light *** *** *** *** *** *** *** *** Air flow meter Air-fuel ratio control solenoid valve Fuel injection control 2003 G35 Coupe TERMINOLOGY NEW TERM Nonvolatile random access memory On board diagnostic system Open loop Oxidation catalyst Oxidation catalytic converter system Oxygen sensor Park position switch NEW ACRONYM / ABBREVIATION NVRAM OBD system OL OC OC system O2S *** Park/neutral position switch PNP switch Periodic trap oxidizer system PTOX system Positive crankcase ventilation PCV Positive crankcase ventilation valve PCV valve Powertrain control module PCM Programmable read only memory PROM Pulsed secondary air injection control solenoid valve PAIRC solenoid valve Pulsed secondary air injection system PAIR system Pulsed secondary air injection valve PAIR valve Random access memory RAM Read only memory ROM Scan tool ST Secondary air injection pump AIR pump Secondary air injection system AIR system Sequential multiport fuel injection system SFI system Service reminder indicator SRI Simultaneous multiport fuel injection system *** Smoke puff limiter system SPL system Supercharger SC Supercharger bypass SCB System readiness test SRT Thermal vacuum valve TVV Three way catalyst TWC Three way catalytic converter system TWC system Three way + oxidation catalyst TWC + OC Three way + oxidation catalytic converter system TWC + OC system Throttle body TB Throttle body fuel injection system Throttle position Throttle position sensor Throttle position switch TBI system TP TPS TP switch Torque converter clutch solenoid valve TCC solenoid valve Revision; 2004 April GI-54 OLD TERM *** Self-diagnosis Open loop Catalyst *** Exhaust gas sensor Park switch Park/neutral switch Inhibitor switch Neutral position switch *** Positive crankcase ventilation PCV valve *** *** AIV control solenoid valve Air induction valve (AIV) control Air induction valve *** *** *** *** *** Sequential fuel injection *** Simultaneous fuel injection *** *** *** *** Thermal vacuum valve Catalyst *** Catalyst *** Throttle chamber SPI body Fuel injection control Throttle position Throttle sensor Throttle switch Lock-up cancel solenoid Lock-up solenoid 2003 G35 Coupe TERMINOLOGY NEW TERM NEW ACRONYM / ABBREVIATION OLD TERM GI Transmission control module TCM A/T control unit Turbocharger Vehicle speed sensor TC VSS Turbocharger B Vehicle speed sensor Volume air flow sensor VAFS Air flow meter Warm up oxidation catalyst WU-OC Catalyst C Warm up oxidation catalytic converter system WU-OC system *** Warm up three way catalyst WU-TWC Catalyst D Warm up three way catalytic converter system WU-TWC system *** Wide open throttle position switch WOTP switch Full switch E ***: Not applicable F G H I J K L M Revision; 2004 April GI-55 2003 G35 Coupe TERMINOLOGY Revision; 2004 April GI-56 2003 G35 CoupeAcrobat Distiller 4.05 for Windows FrameMaker SGML 5.5.6p145J