2007 INFINITI FX35 Service Manual

trunk release compression ratio oil capacity service interval brake rotor headlight aiming

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INFINITI FX35 2007 Service Manual EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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Revision: 2006 July 2007 FX35/FX45
ENGINE CONTROL SYSTEM
VQ35DE
INDEX FOR DTC ...........................

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION
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EC
Revision: 2006 July 2007 FX35/FX45
ENGINE CONTROL SYSTEM
VQ35DE
INDEX FOR DTC ...................................................... 15
DTC No. Index .................................................... ... 15
Alphabetical Index ............................................... ... 19
PRECAUTIONS ..................................................... ... 23
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ... 23
Precautions for Procedures without Cowl Top Cover ... 23
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... ... 23
Precaution ........................................................... ... 24
PREPARATION ...................................................... ... 27
Special Service Tools .......................................... ... 27
Commercial Service Tools ................................... ... 28
ENGINE CONTROL SYSTEM ............................... ... 29
System Diagram .................................................. ... 29
Multiport Fuel Injection (MFI) System ................. ... 30
Electronic Ignition (EI) System ............................ ... 32
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. ... 33
AIR CONDITIONING CUT CONTROL .................. ... 34
Input/Output Signal Chart .................................... ... 34
System Description ............................................. ... 34
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 35
System Description ............................................. ... 35
Component Description ....................................... ... 36
CAN COMMUNICATION ....................................... ... 37
System Description ............................................. ... 37
EVAPORATIVE EMISSION SYSTEM .................... ... 38
Description .......................................................... ... 38
Component Inspection ........................................ ... 41
Removal and Installation ..................................... ... 42
How to Detect Fuel Vapor Leakage .................... ... 42
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... ... 45
System Description ............................................. ... 45
Diagnostic Procedure .......................................... ... 46
Component Inspection ........................................ ... 48 POSITIVE CRANKCASE VENTILATION ..............
... 50
Description ........................................................... ... 50
Component Inspection ......................................... ... 50
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... ... 52
Description ........................................................... ... 52
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... ... 53
Introduction .......................................................... ... 53
Two Trip Detection Logic ..................................... ... 53
Emission-Related Diagnostic Information ............ ... 54
Malfunction Indicator Lamp (MIL) ........................ ... 67
OBD System Operation Chart ............................. ... 71
BASIC SERVICE PROCEDURE ............................ ... 76
Basic Inspection .................................................. ... 76
Idle Speed and Ignition Timing Check ................. ... 81
Procedure After Replacing ECM ......................... ... 82
VIN Registration .................................................. ... 82
Accelerator Pedal Released Position Learning ... ... 83
Throttle Valve Closed Position Learning .............. ... 83
Idle Air Volume Learning ..................................... ... 83
Fuel Pressure Check ........................................... ... 85
TROUBLE DIAGNOSIS ......................................... ... 87
Trouble Diagnosis Introduction ............................ ... 87
DTC Inspection Priority Chart .............................. ... 93
Fail-Safe Chart .................................................... ... 95
Symptom Matrix Chart ......................................... ... 96
Engine Control Component Parts Location ......... .100
Vacuum Hose Drawing ........................................ .106
Circuit Diagram .................................................... .107
ECM Harness Connector Terminal Layout .......... .109
ECM Terminals and Reference Value .................. .109
CONSULT-II Function (ENGINE) ......................... .118
Generic Scan Tool (GST) Function ...................... .129
CONSULT-II Reference Value in Data Monitor .... .132
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .134
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .137
Description ........................................................... .137
Testing Condition ................................................. .137

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INFINITI FX35 2007 Service Manual EC-2Revision: 2006 July 2007 FX35/FX45
Inspection Procedure ...........................................
.137
Diagnostic Procedure .......................................... .138
TROUBLE DIAGNOS

EC-2Revision: 2006 July 2007 FX35/FX45
Inspection Procedure ...........................................
.137
Diagnostic Procedure .......................................... .138
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ...................................................................... .147
Description ........................................................... .147
Diagnostic Procedure .......................................... .147
POWER SUPPLY AND GROUND CIRCUIT .......... .148
Wiring Diagram .................................................... .148
Diagnostic Procedure .......................................... .149
Ground Inspection ............................................... .153
DTC U1000, U1001 CAN COMMUNICATION LINE .155
Description ........................................................... .155
On Board Diagnosis Logic ................................... .155
DTC Confirmation Procedure .............................. .155
Wiring Diagram .................................................... .156
Diagnostic Procedure .......................................... .157
DTC U1010 CAN COMMUNICATION .................... .158
Description ........................................................... .158
On Board Diagnosis Logic ................................... .158
DTC Confirmation Procedure .............................. .158
Diagnostic Procedure .......................................... .159
DTC P0011, P0021 IVT CONTROL ....................... .160
Description ........................................................... .160
CONSULT-II Reference Value in Data Monitor Mode .160
On Board Diagnosis Logic ................................... .161
DTC Confirmation Procedure .............................. .161
Diagnostic Procedure .......................................... .162
Component Inspection ......................................... .163
Removal and Installation ..................................... .163
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER ................................................................. .164
Description ........................................................... .164
CONSULT-II Reference Value in Data Monitor Mode .164
On Board Diagnosis Logic ................................... .164
DTC Confirmation Procedure .............................. .164
Wiring Diagram .................................................... .166
Diagnostic Procedure .......................................... .169
Component Inspection ......................................... .171
Removal and Installation ..................................... .171
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .172
Description ........................................................... .172
CONSULT-II Reference Value in Data Monitor Mode .172
On Board Diagnosis Logic ................................... .172
DTC Confirmation Procedure .............................. .173
Wiring Diagram .................................................... .174
Diagnostic Procedure .......................................... .177
Component Inspection ......................................... .179
Removal and Installation ..................................... .179
DTC P0075, P0081 IVT CONTROL SOLENOID
VALVE .................................................................... .180
Component Description ....................................... .180
CONSULT-II Reference Value in Data Monitor Mode .180
On Board Diagnosis Logic ................................... .180
DTC Confirmation Procedure .............................. .180
Wiring Diagram .................................................... .181 Diagnostic Procedure ...........................................
.185
Component Inspection ......................................... .186
Removal and Installation ...................................... .186
DTC P0101 MAF SENSOR .................................... .187
Component Description ....................................... .187
CONSULT-II Reference Value in Data Monitor Mode .187
On Board Diagnosis Logic ................................... .187
DTC Confirmation Procedure ............................... .188
Overall Function Check ........................................ .189
Wiring Diagram .................................................... .190
Diagnostic Procedure ........................................... .191
Component Inspection ......................................... .194
Removal and Installation ...................................... .195
DTC P0102, P0103 MAF SENSOR ........................ .196
Component Description ....................................... .196
CONSULT-II Reference Value in Data Monitor Mode .196
On Board Diagnosis Logic ................................... .196
DTC Confirmation Procedure ............................... .197
Wiring Diagram .................................................... .198
Diagnostic Procedure ........................................... .199
Component Inspection ......................................... .202
Removal and Installation ...................................... .203
DTC P0112, P0113 IAT SENSOR ........................... .204
Component Description ....................................... .204
On Board Diagnosis Logic ................................... .204
DTC Confirmation Procedure ............................... .204
Wiring Diagram .................................................... .206
Diagnostic Procedure ........................................... .207
Component Inspection ......................................... .208
Removal and Installation ...................................... .208
DTC P0117, P0118 ECT SENSOR ......................... .209
Component Description ....................................... .209
On Board Diagnosis Logic ................................... .209
DTC Confirmation Procedure ............................... .210
Wiring Diagram .................................................... .211
Diagnostic Procedure ........................................... .212
Component Inspection ......................................... .213
Removal and Installation ...................................... .213
DTC P0122, P0123 TP SENSOR ........................... .214
Component Description ....................................... .214
CONSULT-II Reference Value in Data Monitor Mode .214
On Board Diagnosis Logic ................................... .214
DTC Confirmation Procedure ............................... .215
Wiring Diagram .................................................... .216
Diagnostic Procedure ........................................... .217
Component Inspection ......................................... .220
Removal and Installation ...................................... .220
DTC P0125 ECT SENSOR ..................................... .221
Component Description ....................................... .221
On Board Diagnosis Logic ................................... .221
DTC Confirmation Procedure ............................... .222
Diagnostic Procedure ........................................... .222
Component Inspection ......................................... .223
Removal and Installation ...................................... .223
DTC P0127 IAT SENSOR ....................................... .224
Component Description ....................................... .224

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On Board Diagnosis Logic ..................................
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DTC Confirmation Procedure ......................

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On Board Diagnosis Logic ..................................
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DTC Confirmation Procedure .............................. . 224
Diagnostic Procedure .......................................... . 225
Component Inspection ........................................ . 226
Removal and Installation ..................................... . 226
DTC P0128 THERMOSTAT FUNCTION ............... . 227
On Board Diagnosis Logic .................................. . 227
DTC Confirmation Procedure .............................. . 227
Diagnostic Procedure .......................................... . 227
Component Inspection ........................................ . 228
Removal and Installation ..................................... . 228
DTC P0130, P0150 A/F SENSOR 1 ...................... . 229
Component Description ....................................... . 229
CONSULT-II Reference Value in Data Monitor Mode . 229
On Board Diagnosis Logic .................................. . 229
DTC Confirmation Procedure .............................. . 229
Overall Function Check ....................................... . 231
Wiring Diagram ................................................... . 232
Diagnostic Procedure .......................................... . 235
Removal and Installation ..................................... . 238
DTC P0131, P0151 A/F SENSOR 1 ...................... . 239
Component Description ....................................... . 239
CONSULT-II Reference Value in Data Monitor Mode . 239
On Board Diagnosis Logic .................................. . 239
DTC Confirmation Procedure .............................. . 240
Wiring Diagram ................................................... . 241
Diagnostic Procedure .......................................... . 244
Removal and Installation ..................................... . 247
DTC P0132, P0152 A/F SENSOR 1 ...................... . 248
Component Description ....................................... . 248
CONSULT-II Reference Value in Data Monitor Mode . 248
On Board Diagnosis Logic .................................. . 248
DTC Confirmation Procedure .............................. . 249
Wiring Diagram ................................................... . 250
Diagnostic Procedure .......................................... . 253
Removal and Installation ..................................... . 256
DTC P0133, P0153 A/F SENSOR 1 ...................... . 257
Component Description ....................................... . 257
CONSULT-II Reference Value in Data Monitor Mode . 257
On Board Diagnosis Logic .................................. . 257
DTC Confirmation Procedure .............................. . 258
Wiring Diagram ................................................... . 260
Diagnostic Procedure .......................................... . 263
Removal and Installation ..................................... . 268
DTC P0137, P0157 HO2S2 ................................... . 269
Component Description ....................................... . 269
CONSULT-II Reference Value in Data Monitor Mode . 269
On Board Diagnosis Logic .................................. . 269
DTC Confirmation Procedure .............................. . 270
Overall Function Check ....................................... . 270
Wiring Diagram ................................................... . 272
Diagnostic Procedure .......................................... . 275
Component Inspection ........................................ . 277
Removal and Installation ..................................... . 279 DTC P0138, P0158 HO2S2 ....................................
.280
Component Description ....................................... .280
CONSULT-II Reference Value in Data Monitor Mode .280
On Board Diagnosis Logic ................................... .280
DTC Confirmation Procedure .............................. .281
Overall Function Check ....................................... .282
Wiring Diagram .................................................... .283
Diagnostic Procedure .......................................... .286
Component Inspection ......................................... .290
Removal and Installation ..................................... .292
DTC P0139, P0159 HO2S2 .................................... .293
Component Description ....................................... .293
CONSULT-II Reference Value in Data Monitor Mode .293
On Board Diagnosis Logic ................................... .293
DTC Confirmation Procedure .............................. .294
Overall Function Check ....................................... .294
Wiring Diagram .................................................... .296
Diagnostic Procedure .......................................... .299
Component Inspection ......................................... .301
Removal and Installation ..................................... .303
DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION ............................................................. .304
On Board Diagnosis Logic ................................... .304
DTC Confirmation Procedure .............................. .304
Wiring Diagram .................................................... .306
Diagnostic Procedure .......................................... .310
DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION ............................................................. .316
On Board Diagnosis Logic ................................... .316
DTC Confirmation Procedure .............................. .316
Wiring Diagram .................................................... .318
Diagnostic Procedure .......................................... .322
DTC P0181 FTT SENSOR ..................................... .327
Component Description ....................................... .327
On Board Diagnosis Logic ................................... .327
DTC Confirmation Procedure .............................. .327
Wiring Diagram .................................................... .329
Diagnostic Procedure .......................................... .330
Component Inspection ......................................... .332
Removal and Installation ..................................... .332
DTC P0182, P0183 FTT SENSOR ......................... .333
Component Description ....................................... .333
On Board Diagnosis Logic ................................... .333
DTC Confirmation Procedure .............................. .333
Wiring Diagram .................................................... .334
Diagnostic Procedure .......................................... .335
Component Inspection ......................................... .337
Removal and Installation ..................................... .337
DTC P0222, P0223 TP SENSOR ........................... .338
Component Description ....................................... .338
CONSULT-II Reference Value in Data Monitor Mode .338
On Board Diagnosis Logic ................................... .338
DTC Confirmation Procedure .............................. .339
Wiring Diagram .................................................... .340
Diagnostic Procedure .......................................... .341

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INFINITI FX35 2007 Service Manual EC-4Revision: 2006 July 2007 FX35/FX45
Component Inspection .........................................
.344
Removal and Installation ..................................... .344
DTC P0300 - P0306 M

EC-4Revision: 2006 July 2007 FX35/FX45
Component Inspection .........................................
.344
Removal and Installation ..................................... .344
DTC P0300 - P0306 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 6 CYLINDER MISFIRE .................... .345
On Board Diagnosis Logic ................................... .345
DTC Confirmation Procedure .............................. .346
Diagnostic Procedure .......................................... .346
DTC P0327, P0328 KS ........................................... .355
Component Description ....................................... .355
On Board Diagnosis Logic ................................... .355
DTC Confirmation Procedure .............................. .355
Wiring Diagram .................................................... .356
Diagnostic Procedure .......................................... .357
Component Inspection ......................................... .358
Removal and Installation ..................................... .359
DTC P0335 CKP SENSOR (POS) ......................... .360
Component Description ....................................... .360
CONSULT-II Reference Value in Data Monitor Mode .360
On Board Diagnosis Logic ................................... .360
DTC Confirmation Procedure .............................. .361
Wiring Diagram .................................................... .362
Diagnostic Procedure .......................................... .363
Component Inspection ......................................... .366
Removal and Installation ..................................... .366
DTC P0340, P0345 CMP SENSOR (PHASE) ........ .367
Component Description ....................................... .367
CONSULT-II Reference Value in Data Monitor Mode .367
On Board Diagnosis Logic ................................... .367
DTC Confirmation Procedure .............................. .368
Wiring Diagram .................................................... .369
Diagnostic Procedure .......................................... .372
Component Inspection ......................................... .375
Removal and Installation ..................................... .375
DTC P0420, P0430 THREE WAY CATALYST FUNC-
TION ....................................................................... .376
On Board Diagnosis Logic ................................... .376
DTC Confirmation Procedure .............................. .376
Overall Function Check ....................................... .377
Diagnostic Procedure .......................................... .378
DTC P0441 EVAP CONTROL SYSTEM ................ .382
System Description .............................................. .382
On Board Diagnosis Logic ................................... .382
DTC Confirmation Procedure .............................. .382
Overall Function Check ....................................... .383
Diagnostic Procedure .......................................... .384
DTC P0442 EVAP CONTROL SYSTEM ................ .387
On Board Diagnosis Logic ................................... .387
DTC Confirmation Procedure .............................. .388
Diagnostic Procedure .......................................... .389
DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE .............................. .396
Description ........................................................... .396
CONSULT-II Reference Value in Data Monitor Mode .396
On Board Diagnosis Logic ................................... .397
DTC Confirmation Procedure .............................. .397
Wiring Diagram .................................................... .398 Diagnostic Procedure ...........................................
.400
Component Inspection ......................................... .403
Removal and Installation ...................................... .403
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ..................... .404
Description ........................................................... .404
CONSULT-II Reference Value in Data Monitor Mode .404
On Board Diagnosis Logic ................................... .405
DTC Confirmation Procedure ............................... .405
Wiring Diagram .................................................... .406
Diagnostic Procedure ........................................... .408
Component Inspection ......................................... .409
Removal and Installation ...................................... .410
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE ..................................................................... .411
Component Description ....................................... .411
CONSULT-II Reference Value in Data Monitor Mode .411
On Board Diagnosis Logic ................................... .411
DTC Confirmation Procedure ............................... .412
Wiring Diagram .................................................... .413
Diagnostic Procedure ........................................... .414
Component Inspection ......................................... .416
DTC P0448 EVAP CANISTER VENT CONTROL
VALVE ..................................................................... .418
Component Description ....................................... .418
CONSULT-II Reference Value in Data Monitor Mode .418
On Board Diagnosis Logic ................................... .418
DTC Confirmation Procedure ............................... .419
Wiring Diagram .................................................... .420
Diagnostic Procedure ........................................... .421
Component Inspection ......................................... .422
DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................. .424
Component Description ....................................... .424
CONSULT-II Reference Value in Data Monitor Mode .424
On Board Diagnosis Logic ................................... .424
DTC Confirmation Procedure ............................... .425
Diagnostic Procedure ........................................... .425
Component Inspection ......................................... .426
DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................. .427
Component Description ....................................... .427
CONSULT-II Reference Value in Data Monitor Mode .427
On Board Diagnosis Logic ................................... .427
DTC Confirmation Procedure ............................... .428
Wiring Diagram .................................................... .429
Diagnostic Procedure ........................................... .430
Component Inspection ......................................... .432
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................. .433
Component Description ....................................... .433
CONSULT-II Reference Value in Data Monitor Mode .433
On Board Diagnosis Logic ................................... .433

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DTC Confirmation Procedure ..............................
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Wiring Diagram ....................................

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Wiring Diagram ................................................... . 435
Diagnostic Procedure .......................................... . 436
Component Inspection ........................................ . 440
DTC P0455 EVAP CONTROL SYSTEM ............... . 441
On Board Diagnosis Logic .................................. . 441
DTC Confirmation Procedure .............................. . 442
Diagnostic Procedure .......................................... . 443
DTC P0456 EVAP CONTROL SYSTEM ............... . 449
On Board Diagnosis Logic .................................. . 449
DTC Confirmation Procedure .............................. . 450
Overall Function Check ....................................... . 451
Diagnostic Procedure .......................................... . 452
DTC P0460 FUEL LEVEL SENSOR ..................... . 459
Component Description ....................................... . 459
On Board Diagnosis Logic .................................. . 459
DTC Confirmation Procedure .............................. . 459
Diagnostic Procedure .......................................... . 460
Removal and Installation ..................................... . 460
DTC P0461 FUEL LEVEL SENSOR ..................... . 461
Component Description ....................................... . 461
On Board Diagnosis Logic .................................. . 461
Overall Function Check ....................................... . 461
Diagnostic Procedure .......................................... . 462
Removal and Installation ..................................... . 462
DTC P0462, P0463 FUEL LEVEL SENSOR ......... . 463
Component Description ....................................... . 463
On Board Diagnosis Logic .................................. . 463
DTC Confirmation Procedure .............................. . 463
Diagnostic Procedure .......................................... . 464
Removal and Installation ..................................... . 464
DTC P0500 VSS .................................................... . 465
Description .......................................................... . 465
On Board Diagnosis Logic .................................. . 465
DTC Confirmation Procedure .............................. . 465
Overall Function Check ....................................... . 466
Diagnostic Procedure .......................................... . 466
DTC P0506 ISC SYSTEM ...................................... . 467
Description .......................................................... . 467
On Board Diagnosis Logic .................................. . 467
DTC Confirmation Procedure .............................. . 467
Diagnostic Procedure .......................................... . 468
DTC P0507 ISC SYSTEM ...................................... . 469
Description .......................................................... . 469
On Board Diagnosis Logic .................................. . 469
DTC Confirmation Procedure .............................. . 469
Diagnostic Procedure .......................................... . 470
DTC P0550 PSP SENSOR .................................... . 471
Component Description ....................................... . 471
CONSULT-II Reference Value in Data Monitor Mode . 471
On Board Diagnosis Logic .................................. . 471
DTC Confirmation Procedure .............................. . 471
Wiring Diagram ................................................... . 472
Diagnostic Procedure .......................................... . 473
Component Inspection ........................................ . 475
Removal and Installation ..................................... . 475
DTC P0603 ECM POWER SUPPLY ...................... . 476
Component Description ....................................... . 476 On Board Diagnosis Logic ...................................
.476
DTC Confirmation Procedure .............................. .476
Wiring Diagram .................................................... .477
Diagnostic Procedure .......................................... .478
DTC P0605 ECM .................................................... .480
Component Description ....................................... .480
On Board Diagnosis Logic ................................... .480
DTC Confirmation Procedure .............................. .480
Diagnostic Procedure .......................................... .481
DTC P0643 SENSOR POWER SUPPLY ............... .483
On Board Diagnosis Logic ................................... .483
DTC Confirmation Procedure .............................. .483
Wiring Diagram .................................................... .484
Diagnostic Procedure .......................................... .486
DTC P0850 PNP SWITCH ..................................... .488
Component Description ....................................... .488
CONSULT-II Reference Value in Data Monitor Mode .488
On Board Diagnosis Logic ................................... .488
DTC Confirmation Procedure .............................. .488
Overall Function Check ....................................... .489
Wiring Diagram .................................................... .490
Diagnostic Procedure .......................................... .491
DTC P1148, P1168 CLOSED LOOP CONTROL ... .493
On Board Diagnosis Logic ................................... .493
DTC P1211 TCS CONTROL UNIT ......................... .494
Description ........................................................... .494
On Board Diagnosis Logic ................................... .494
DTC Confirmation Procedure .............................. .494
Diagnostic Procedure .......................................... .494
DTC P1212 TCS COMMUNICATION LINE ........... .495
Description ........................................................... .495
On Board Diagnosis Logic ................................... .495
DTC Confirmation Procedure .............................. .495
Diagnostic Procedure .......................................... .495
DTC P1217 ENGINE OVER TEMPERATURE ....... .496
Description ........................................................... .496
CONSULT-II Reference Value in Data Monitor Mode .497
On Board Diagnosis Logic ................................... .497
Overall Function Check ....................................... .498
Wiring Diagram .................................................... .500
Diagnostic Procedure .......................................... .502
Main 12 Causes of Overheating .......................... .507
Component Inspection ......................................... .507
DTC P1225 TP SENSOR ....................................... .509
Component Description ....................................... .509
On Board Diagnosis Logic ................................... .509
DTC Confirmation Procedure .............................. .509
Diagnostic Procedure .......................................... .510
Removal and Installation ..................................... .510
DTC P1226 TP SENSOR ....................................... .511
Component Description ....................................... .511
On Board Diagnosis Logic ................................... .511
DTC Confirmation Procedure .............................. .511
Diagnostic Procedure .......................................... .512
Removal and Installation ..................................... .512
DTC P1421 COLD START CONTROL .................. .513
Description ........................................................... .513

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INFINITI FX35 2007 Service Manual EC-6Revision: 2006 July 2007 FX35/FX45
On Board Diagnosis Logic ...................................
.513
DTC Confirmation Procedure .............................. .513
Diagnostic Procedure ...

EC-6Revision: 2006 July 2007 FX35/FX45
On Board Diagnosis Logic ...................................
.513
DTC Confirmation Procedure .............................. .513
Diagnostic Procedure .......................................... .513
DTC P1564 ICC STEERING SWITCH ................... .515
Component Description ....................................... .515
CONSULT-II Reference Value in Data Monitor Mode .515
On Board Diagnosis Logic ................................... .515
DTC Confirmation Procedure .............................. .516
Wiring Diagram .................................................... .517
Diagnostic Procedure .......................................... .518
Component Inspection ......................................... .521
DTC P1564 ASCD STEERING SWITCH ............... .522
Component Description ....................................... .522
CONSULT-II Reference Value in Data Monitor Mode .522
On Board Diagnosis Logic ................................... .522
DTC Confirmation Procedure .............................. .523
Wiring Diagram .................................................... .524
Diagnostic Procedure .......................................... .525
Component Inspection ......................................... .527
DTC P1568 ICC FUNCTION .................................. .529
On Board Diagnosis Logic ................................... .529
DTC Confirmation Procedure .............................. .529
Diagnostic Procedure .......................................... .529
DTC P1572 ICC BRAKE SWITCH ......................... .530
Component Description ....................................... .530
CONSULT-II Reference Value in Data Monitor Mode .530
On Board Diagnosis Logic ................................... .530
DTC Confirmation Procedure .............................. .531
Wiring Diagram .................................................... .532
Diagnostic Procedure .......................................... .533
Component Inspection ......................................... .538
DTC P1572 ASCD BRAKE SWITCH ..................... .539
Component Description ....................................... .539
CONSULT-II Reference Value in Data Monitor Mode .539
On Board Diagnosis Logic ................................... .539
DTC Confirmation Procedure .............................. .540
Wiring Diagram .................................................... .541
Diagnostic Procedure .......................................... .542
Component Inspection ......................................... .546
DTC P1574 ICC VEHICLE SPEED SENSOR ........ .547
Component Description ....................................... .547
On Board Diagnosis Logic ................................... .547
DTC Confirmation Procedure .............................. .547
Diagnostic Procedure .......................................... .548
DTC P1574 ASCD VEHICLE SPEED SENSOR .... .549
Component Description ....................................... .549
On Board Diagnosis Logic ................................... .549
DTC Confirmation Procedure .............................. .549
Diagnostic Procedure .......................................... .550
DTC P1715 INPUT SPEED SENSOR (TURBINE
REVOLUTION SENSOR) ....................................... .551
Description ........................................................... .551
CONSULT-II Reference Value in Data Monitor Mode .551 On Board Diagnosis Logic ...................................
.551
Diagnostic Procedure ........................................... .551
DTC P1805 BRAKE SWITCH ................................ .552
Description ........................................................... .552
CONSULT-II Reference Value in Data Monitor Mode .552
On Board Diagnosis Logic ................................... .552
DTC Confirmation Procedure ............................... .552
Wiring Diagram .................................................... .553
Diagnostic Procedure ........................................... .554
Component Inspection ......................................... .556
DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY .................................................................... .557
Component Description ....................................... .557
CONSULT-II Reference Value in Data Monitor Mode .557
On Board Diagnosis Logic ................................... .557
DTC Confirmation Procedure ............................... .557
Wiring Diagram .................................................... .559
Diagnostic Procedure ........................................... .560
DTC P2101 ELECTRIC THROTTLE CONTROL
FUNCTION ............................................................. .563
Description ........................................................... .563
On Board Diagnosis Logic ................................... .563
DTC Confirmation Procedure ............................... .563
Wiring Diagram .................................................... .564
Diagnostic Procedure ........................................... .565
Component Inspection ......................................... .568
Removal and Installation ...................................... .568
DTC P2118 THROTTLE CONTROL MOTOR ........ .569
Component Description ....................................... .569
On Board Diagnosis Logic ................................... .569
DTC Confirmation Procedure ............................... .569
Wiring Diagram .................................................... .570
Diagnostic Procedure ........................................... .571
Component Inspection ......................................... .572
Removal and Installation ...................................... .573
DTC P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................ .574
Component Description ....................................... .574
On Board Diagnosis Logic ................................... .574
DTC Confirmation Procedure ............................... .574
Diagnostic Procedure ........................................... .575
DTC P2122, P2123 APP SENSOR ........................ .576
Component Description ....................................... .576
CONSULT-II Reference Value in Data Monitor Mode .576
On Board Diagnosis Logic ................................... .576
DTC Confirmation Procedure ............................... .577
Wiring Diagram .................................................... .578
Diagnostic Procedure ........................................... .579
Component Inspection ......................................... .582
Removal and Installation ...................................... .582
DTC P2127, P2128 APP SENSOR ........................ .583
Component Description ....................................... .583
CONSULT-II Reference Value in Data Monitor Mode .583
On Board Diagnosis Logic ................................... .583
DTC Confirmation Procedure ...............................

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Wiring Diagram ...................................................
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Diagnostic Procedure .....................

EC-7
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Wiring Diagram ...................................................
. 585
Diagnostic Procedure .......................................... . 586
Component Inspection ........................................ . 589
Removal and Installation ..................................... . 589
DTC P2135 TP SENSOR ....................................... . 590
Component Description ....................................... . 590
CONSULT-II Reference Value in Data Monitor Mode . 590
On Board Diagnosis Logic .................................. . 590
DTC Confirmation Procedure .............................. . 591
Wiring Diagram ................................................... . 592
Diagnostic Procedure .......................................... . 593
Component Inspection ........................................ . 596
Removal and Installation ..................................... . 596
DTC P2138 APP SENSOR .................................... . 597
Component Description ....................................... . 597
CONSULT-II Reference Value in Data Monitor Mode . 597
On Board Diagnosis Logic .................................. . 597
DTC Confirmation Procedure .............................. . 598
Wiring Diagram ................................................... . 599
Diagnostic Procedure .......................................... . 600
Component Inspection ........................................ . 604
Removal and Installation ..................................... . 604
DTC P2A00, P2A03 A/F SENSOR 1 ..................... . 605
Component Description ....................................... . 605
CONSULT-II Reference Value in Data Monitor Mode . 605
On Board Diagnosis Logic .................................. . 605
DTC Confirmation Procedure .............................. . 606
Wiring Diagram ................................................... . 607
Diagnostic Procedure .......................................... . 610
Removal and Installation ..................................... . 616
ASCD BRAKE SWITCH ........................................ . 617
Component Description ....................................... . 617
CONSULT-II Reference Value in Data Monitor Mode . 617
Wiring Diagram ................................................... . 618
Diagnostic Procedure .......................................... . 619
Component Inspection ........................................ . 623
ASCD INDICATOR ................................................ . 624
Component Description ....................................... . 624
CONSULT-II Reference Value in Data Monitor Mode . 624
Wiring Diagram ................................................... . 625
Diagnostic Procedure .......................................... . 626
ELECTRICAL LOAD SIGNAL ............................... . 627
Description .......................................................... . 627
CONSULT-II Reference Value in Data Monitor Mode . 627
Diagnostic Procedure .......................................... . 627
FUEL INJECTOR ................................................... . 629
Component Description ....................................... . 629
CONSULT-II Reference Value in Data Monitor Mode . 629
Wiring Diagram ................................................... . 630
Diagnostic Procedure .......................................... . 631
Component Inspection ........................................ . 635
Removal and Installation ..................................... . 635 FUEL PUMP ...........................................................
.636
Description ........................................................... .636
CONSULT-II Reference Value in Data Monitor Mode .636
Wiring Diagram .................................................... .637
Diagnostic Procedure .......................................... .638
Component Inspection ......................................... .641
Removal and Installation ..................................... .641
ICC BRAKE SWITCH ............................................ .642
Component Description ....................................... .642
CONSULT-II Reference Value in Data Monitor Mode .642
Wiring Diagram .................................................... .643
Diagnostic Procedure .......................................... .644
Component Inspection ......................................... .649
IGNITION SIGNAL ................................................. .650
Component Description ....................................... .650
Wiring Diagram .................................................... .651
Diagnostic Procedure .......................................... .656
Component Inspection ......................................... .661
Removal and Installation ..................................... .662
REFRIGERANT PRESSURE SENSOR ................. .663
Component Description ....................................... .663
Wiring Diagram .................................................... .664
Diagnostic Procedure .......................................... .665
Removal and Installation ..................................... .667
SNOW MODE SWITCH ......................................... .668
Description ........................................................... .668
CONSULT-II Reference Value in the Data Monitor
Mode .................................................................... .668
Wiring Diagram .................................................... .669
Diagnostic Procedure .......................................... .670
Component Inspection ......................................... .672
MIL AND DATA LINK CONNECTOR ..................... .673
Wiring Diagram .................................................... .673
SERVICE DATA AND SPECIFICATIONS (SDS) ... .675
Fuel Pressure ...................................................... .675
Idle Speed and Ignition Timing ............................ .675
Calculated Load Value ......................................... .675
Mass Air Flow Sensor .......................................... .675
Intake Air Temperature Sensor ............................ .675
Engine Coolant Temperature Sensor .................. .675
Air Fuel Ratio (A/F) Sensor 1 Heater ................... .675
Heated Oxygen sensor 2 Heater ......................... .675
Crankshaft Position Sensor (POS) ...................... .675
Camshaft Position Sensor (PHASE) ................... .675
Throttle Control Motor .......................................... .675
Fuel Injector ......................................................... .676
Fuel Pump ........................................................... .676
VK45DE
INDEX FOR DTC .................................................... .677
DTC No. Index ..................................................... .677
Alphabetical Index ............................................... .681
PRECAUTIONS ..................................................... .685
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .............................................................. .685

Page 1384 of 4366

INFINITI FX35 2007 Service Manual EC-8Revision: 2006 July 2007 FX35/FX45
Precautions for Procedures without Cowl Top Cover
.685
On Board Diagnostic (OBD) System of Engine and
A/T ..................................................

EC-8Revision: 2006 July 2007 FX35/FX45
Precautions for Procedures without Cowl Top Cover
.685
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... .685
Precaution ........................................................... .686
PREPARATION ...................................................... .689
Special Service Tools .......................................... .689
Commercial Service Tools ................................... .690
ENGINE CONTROL SYSTEM ............................... .691
System Diagram .................................................. .691
Multiport Fuel Injection (MFI) System .................. .692
Electronic Ignition (EI) System ............................ .694
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. .695
AIR CONDITIONING CUT CONTROL ................... .696
Input/Output Signal Chart .................................... .696
System Description .............................................. .696
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .697
System Description .............................................. .697
Component Description ....................................... .698
CAN COMMUNICATION ........................................ .699
System Description .............................................. .699
EVAPORATIVE EMISSION SYSTEM .................... .700
Description ........................................................... .700
Component Inspection ......................................... .703
Removal and Installation ..................................... .704
How to Detect Fuel Vapor Leakage ..................... .704
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... .707
System Description .............................................. .707
Diagnostic Procedure .......................................... .708
Component Inspection ......................................... .710
POSITIVE CRANKCASE VENTILATION .............. .712
Description ........................................................... .712
Component Inspection ......................................... .712
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... .714
Description ........................................................... .714
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... .715
Introduction .......................................................... .715
Two Trip Detection Logic ..................................... .715
Emission-related Diagnostic Information ............. .716
Malfunction Indicator Lamp (MIL) ........................ .730
OBD System Operation Chart ............................. .732
BASIC SERVICE PROCEDURE ............................ .738
Basic Inspection .................................................. .738
Idle Speed and Ignition Timing Check ................. .743
Procedure After Replacing ECM ......................... .744
VIN Registration .................................................. .744
Accelerator Pedal Released Position Learning ... .745
Throttle Valve Closed Position Learning .............. .745
Idle Air Volume Learning ..................................... .745
Fuel Pressure Check ........................................... .747
TROUBLE DIAGNOSIS ......................................... .749
Trouble Diagnosis Introduction ............................ .749
DTC Inspection Priority Chart .............................. .755
Fail-Safe Chart .................................................... .757
Symptom Matrix Chart ......................................... .758
Engine Control Component Parts Location ......... .762
Vacuum Hose Drawing ........................................ .769 Circuit Diagram ....................................................
.770
ECM Harness Connector Terminal Layout ........... .772
ECM Terminals and Reference Value .................. .772
CONSULT-II Function (ENGINE) ......................... .781
Generic Scan Tool (GST) Function ...................... .793
CONSULT-II Reference Value in Data Monitor .... .796
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .800
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .802
Description ........................................................... .802
Testing Condition ................................................. .802
Inspection Procedure ........................................... .802
Diagnostic Procedure ........................................... .803
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ...................................................................... .812
Description ........................................................... .812
Diagnostic Procedure ........................................... .812
POWER SUPPLY AND GROUND CIRCUIT .......... .813
Wiring Diagram .................................................... .813
Diagnostic Procedure ........................................... .814
Ground Inspection ................................................ .819
DTC U1000, U1001 CAN COMMUNICATION LINE .820
Description ........................................................... .820
On Board Diagnosis Logic ................................... .820
DTC Confirmation Procedure ............................... .820
Wiring Diagram .................................................... .821
Diagnostic Procedure ........................................... .822
DTC U1010 CAN COMMUNICATION .................... .823
Description ........................................................... .823
On Board Diagnosis Logic ................................... .823
DTC Confirmation Procedure ............................... .823
Diagnostic Procedure ........................................... .824
DTC P0011, P0021 IVT CONTROL ........................ .825
Description ........................................................... .825
CONSULT-II Reference Value in Data Monitor Mode .826
On Board Diagnosis Logic ................................... .826
DTC Confirmation Procedure ............................... .827
Wiring Diagram .................................................... .828
Diagnostic Procedure ........................................... .831
Component Inspection ......................................... .835
Removal and Installation ...................................... .836
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER .................................................................. .837
Description ........................................................... .837
CONSULT-II Reference Value in Data Monitor Mode .837
On Board Diagnosis Logic ................................... .837
DTC Confirmation Procedure ............................... .837
Wiring Diagram .................................................... .838
Diagnostic Procedure ........................................... .841
Component Inspection ......................................... .843
Removal and Installation ...................................... .843
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .844
Description ........................................................... .844
CONSULT-II Reference Value in Data Monitor Mode .844
On Board Diagnosis Logic ................................... .844
DTC Confirmation Procedure ............................... .845

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