2006 INFINITI M35 wiring

EC-14Revision: 2006 January2006 M35/M45 Wiring Diagram ....................................................1325
Diagnostic Procedure ..........................................1326
Component Inspection .........................................1327
Removal and Installation .....................................1328
DTC P1805 BRAKE SWITCH ................................1329
Component Description .......................................1329
CONSULT-II Reference Value in Data Monitor Mode
1329
On Board Diagnosis Logic ...................................1329
DTC Confirmation Procedure ..............................1330
Wiring Diagram ....................................................1331
Diagnostic Procedure ..........................................1332
Component Inspection .........................................1337
DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY ....................................................................1338
Component Description .......................................1338
CONSULT-II Reference Value in Data Monitor Mode
1338
On Board Diagnosis Logic ...................................1338
DTC Confirmation Procedure ..............................1338
Wiring Diagram ....................................................1340
Diagnostic Procedure ..........................................1341
DTC P2101 ELECTRIC THROTTLE CONTROL
FUNCTION .............................................................1344
Description ...........................................................1344
On Board Diagnosis Logic ...................................1344
DTC Confirmation Procedure ..............................1344
Wiring Diagram ....................................................1345
Diagnostic Procedure ..........................................1346
Component Inspection .........................................1350
Removal and Installation .....................................1350
DTC P2118 THROTTLE CONTROL MOTOR ........1351
Component Description .......................................1351
On Board Diagnosis Logic ...................................1351
DTC Confirmation Procedure ..............................1351
Wiring Diagram ....................................................1352
Diagnostic Procedure ..........................................1353
Component Inspection .........................................1354
Removal and Installation .....................................1355
DTC P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................1356
Component Description .......................................1356
On Board Diagnosis Logic ...................................1356
DTC Confirmation Procedure ..............................1356
Diagnostic Procedure ..........................................1357
DTC P2122, P2123 APP SENSOR ........................1358
Component Description .......................................1358
CONSULT-II Reference Value in Data Monitor Mode
1358
On Board Diagnosis Logic ...................................1358
DTC Confirmation Procedure ..............................1359
Wiring Diagram ....................................................1360
Diagnostic Procedure ..........................................1361
Component Inspection .........................................1363
Removal and Installation .....................................1364
DTC P2127, P2128 APP SENSOR ........................1365
Component Description .......................................1365
CONSULT-II Reference Value in Data Monitor Mode
1365On Board Diagnosis Logic ...................................1365
DTC Confirmation Procedure ...............................1366
Wiring Diagram ....................................................1367
Diagnostic Procedure ........................................... 1368
Component Inspection .........................................1371
Removal and Installation ......................................1371
DTC P2135 TP SENSOR .......................................1372
Component Description .......................................1372
CONSULT-II Reference Value in Data Monitor Mode
1372
On Board Diagnosis Logic ...................................1372
DTC Confirmation Procedure ...............................1373
Wiring Diagram ....................................................1374
Diagnostic Procedure ........................................... 1375
Component Inspection .........................................1378
Removal and Installation ......................................1378
DTC P2138 APP SENSOR .....................................1379
Component Description .......................................1379
CONSULT-II Reference Value in Data Monitor Mode
1379
On Board Diagnosis Logic ...................................1379
DTC Confirmation Procedure ...............................1380
Wiring Diagram ....................................................1381
Diagnostic Procedure ........................................... 1382
Component Inspection .........................................1386
Removal and Installation ......................................1386
DTC P2A00, P2A03 A/F SENSOR 1 ......................1387
Component Description .......................................1387
CONSULT-II Reference Value in Data Monitor Mode
1387
On Board Diagnosis Logic ...................................1387
DTC Confirmation Procedure ...............................1387
Wiring Diagram ....................................................1389
Diagnostic Procedure ........................................... 1392
Removal and Installation ......................................1397
VARIABLE INDUCTION AIR CONTROL SYSTEM
(VIAS) .....................................................................1398
Description ...........................................................1398
CONSULT-II Reference Value in Data Monitor Mode
1399
Wiring Diagram ....................................................1400
Diagnostic Procedure ...........................................
1402
Component Inspection .........................................1405
Removal and Installation ......................................1406
IGNITION SIGNAL .................................................1407
Component Description .......................................1407
Wiring Diagram ....................................................1408
Diagnostic Procedure ........................................... 1413
Component Inspection .........................................1417
Removal and Installation ......................................1419
FUEL INJECTOR ....................................................1420
Component Description .......................................1420
CONSULT-II Reference Value in Data Monitor Mode
1420
Wiring Diagram ....................................................1421
Diagnostic Procedure ........................................... 1422
Component Inspection .........................................1426
Removal and Installation ......................................1426

EC-15
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Revision: 2006 January2006 M35/M45 FUEL PUMP ..........................................................1427
Description ..........................................................1427
CONSULT-II Reference Value in Data Monitor Mode
1427
Wiring Diagram ...................................................1428
Diagnostic Procedure ..........................................1429
Component Inspection ........................................1433
Removal and Installation .....................................1433
REFRIGERANT PRESSURE SENSOR ................1434
Component Description .......................................1434
Wiring Diagram ...................................................1435
Diagnostic Procedure ..........................................1436
Removal and Installation .....................................1438
ELECTRICAL LOAD SIGNAL ...............................1439
Description ..........................................................1439
CONSULT-II Reference Value in Data Monitor Mode
1439
Diagnostic Procedure ..........................................1439
ICC BRAKE SWITCH ............................................1441
Component Description .......................................1441
CONSULT-II Reference Value in Data Monitor Mode
1441
Wiring Diagram ...................................................1442
Diagnostic Procedure ..........................................1443
Component Inspection ........................................1447
ASCD BRAKE SWITCH ........................................1449
Component Description .......................................1449
CONSULT-II Reference Value in Data Monitor Mode 1449
Wiring Diagram ....................................................1450
Diagnostic Procedure ..........................................1451
Component Inspection .........................................1455
ASCD INDICATOR ................................................. 1456
Component Description .......................................1456
CONSULT-II Reference Value in Data Monitor Mode
1456
Wiring Diagram ....................................................1457
Diagnostic Procedure ..........................................1458
MIL AND DATA LINK CONNECTOR .....................1459
Wiring Diagram ....................................................1459
SERVICE DATA AND SPECIFICATIONS (SDS) ...1461
Fuel Pressure ......................................................1461
Idle Speed and Ignition Timing ............................1461
Calculated Load Value .........................................1461
Mass Air Flow Sensor ..........................................1461
Intake Air Temperature Sensor ............................1461
Engine Coolant Temperature Sensor ..................1461
Fuel Tank Temperature Sensor ...........................1461
Crankshaft Position Sensor (POS) ......................1461
Camshaft Position Sensor (PHASE) ...................1461
A/F Sensor 1 Heater ............................................ 1461
Heated Oxygen Sensor 2 Heater ........................1462
Throttle Control Motor ..........................................1462
Fuel Injector .........................................................1462
Fuel Pump ...........................................................1462

EC-24
[VQ35DE]
PRECAUTIONS
Revision: 2006 January2006 M35/M45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NBS004RW
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 Man-
ual.
WAR NING :
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-
formed by an authorized NISSAN/INFINITI dealer.
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.
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.
Precautions for Procedures without Cowl Top CoverNBS004RX
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
On Board Diagnostic (OBD) System of Engine and A/TNBS004RY
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.
Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-102, "
HAR-
NESS CONNECTOR" .
Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.
Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.
Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PIIB3706J

EC-38
[VQ35DE]
CAN COMMUNICATION
Revision: 2006 January2006 M35/M45
CAN COMMUNICATIONPFP:23710
System DescriptionNBS004SA
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
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
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-34, "
CAN COMMUNICATION" , about CAN communication for detail.

BASIC SERVICE PROCEDURE
EC-77
[VQ35DE]
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Revision: 2006 January2006 M35/M45
BASIC SERVICE PROCEDUREPFP:00018
Basic InspectionNBS004SQ
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Headlamp switch is OFF.
–Air conditioner switch is OFF.
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3
SEF983U
SEF976U
SEF977U

EC-86
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
DETAILED PROCEDURE
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Head lamp switch is OFF.
–Air conditioner switch is OFF.
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3.
SEF983U
SEF976U
SEF977U

EC-92
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
21. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HARNESS
1. Turn ignition switch OFF and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect A/F sensor 1 harness connector.
4. Check harness continuity between the following terminals.
Refer to EC-249, "
Wiring Diagram" .
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 22.
NG >> 1. Repair open circuit or short to ground or short to power in harness or connectors.
2. GO TO 4.
22. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Reconnect ECM harness connector.
2. Perform EC-95, "
Accelerator Pedal Released Position Learning" .
>> GO TO 23.
23. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-95, "
Throttle Valve Closed Position Learning" .
>> GO TO 24.
24. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-96, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Yes (With CONSULT-II)>>GO TO 25.
Yes (Without CONSULT-II)>>GO TO 26.
No >> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
A/F sensor 1 terminal ECM terminal
Bank1116
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535
656
Bank 2176
277
424
557
658
Continuity should exist.

EC-100
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionNBS004SY
INTRODUCTION
The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.
It is much more difficult to diagnose an incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the Work Flow on EC-101
.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on EC-105
should be used.
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
MEF036D
SEF233G
SEF234G