Infiniti QX4 (R50). Manual - part 134

CONSULT-II Reference Value in Data Monitor
Mode ........................................................................231
ECM Terminals and Reference Value .....................231
On Board Diagnosis Logic.......................................232
Possible Cause........................................................232
DTC Confirmation Procedure ..................................232
Wiring Diagram ........................................................234
Diagnostic Procedure ..............................................236

DTC P0135, P0155 HEATED OXYGEN SENSOR 1
HEATER (FRONT) (BANK 1)/(BANK 2).....................240

Description ...............................................................240
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................240
ECM Terminals and Reference Value .....................240
On Board Diagnosis Logic.......................................241
Possible Cause........................................................241
DTC Confirmation Procedure ..................................241
Wiring Diagram ........................................................242
Diagnostic Procedure ..............................................244

DTC P0137, P0157 HEATED OXYGEN SENSOR 2
(REAR) (BANK 1)/(BANK 2) (MIN. VOLTAGE
MONITORING) .............................................................247

Component Description ...........................................247
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................247
ECM Terminals and Reference Value .....................247
On Board Diagnosis Logic.......................................247
Possible Cause........................................................248
DTC Confirmation Procedure ..................................248
Overall Function Check ...........................................248
Wiring Diagram ........................................................250
Diagnostic Procedure ..............................................252

DTC P0138, P0158 HEATED OXYGEN SENSOR 2
(REAR) (BANK 1)/(BANK 2) (MAX. VOLTAGE
MONITORING) .............................................................257

Component Description ...........................................257
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................257
ECM Terminals and Reference Value .....................257
On Board Diagnosis Logic.......................................257
Possible Cause........................................................258
DTC Confirmation Procedure ..................................258
Overall Function Check ...........................................258
Wiring Diagram ........................................................260
Diagnostic Procedure ..............................................262

DTC P0139, P0159 HEATED OXYGEN SENSOR 2
(REAR) (BANK 1)/(BANK 2) (RESPONSE
MONITORING) .............................................................267

Component Description ...........................................267
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................267
ECM Terminals and Reference Value .....................267

On Board Diagnosis Logic.......................................267
Possible Cause........................................................268
DTC Confirmation Procedure ..................................268
Overall Function Check ...........................................268
Wiring Diagram ........................................................270
Diagnostic Procedure ..............................................272

DTC P0140, P0160 HEATED OXYGEN SENSOR 2
(REAR) (BANK 1)/(BANK 2) (HIGH VOLTAGE)........277

Component Description ...........................................277
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................277
ECM Terminals and Reference Value .....................277
On Board Diagnosis Logic.......................................277
Possible Cause........................................................278
DTC Confirmation Procedure ..................................278
Overall Function Check ...........................................278
Wiring Diagram ........................................................280
Diagnostic Procedure ..............................................282

DTC P0141, P0161 HEATED OXYGEN SENSOR 2
HEATER (REAR) (BANK 1)/(BANK 2).......................286

Description ...............................................................286
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................286
ECM Terminals and Reference Value .....................286
On Board Diagnosis Logic.......................................287
Possible Cause........................................................287
DTC Confirmation Procedure ..................................287
Wiring Diagram ........................................................289
Diagnostic Procedure ..............................................291

DTC P0171 (RIGHT, -B1), P0174 (LEFT, -B2)
FUEL INJECTION SYSTEM FUNCTION (LEAN).......294

On Board Diagnosis Logic.......................................294
Possible Cause........................................................294
DTC Confirmation Procedure ..................................294
Wiring Diagram ........................................................296
Diagnostic Procedure ..............................................298

DTC P0172 (RIGHT, -B1), P0175 (LEFT, -B2)
FUEL INJECTION SYSTEM FUNCTION (RICH)........302

On Board Diagnosis Logic.......................................302
Possible Cause........................................................302
DTC Confirmation Procedure ..................................302
Wiring Diagram ........................................................304
Diagnostic Procedure ..............................................306

DTC P0180 FUEL TANK TEMPERATURE
SENSOR ......................................................................309

Component Description ...........................................309
On Board Diagnosis Logic.......................................309
Possible Cause........................................................309
DTC Confirmation Procedure ..................................310
Wiring Diagram ........................................................ 311
Diagnostic Procedure ..............................................312

IDX

CONTENTS

(Cont’d)

EC-3

DTC P0217 COOLANT OVERTEMPERATURE
ENRICHMENT PROTECTION.....................................314

On Board Diagnosis Logic.......................................314
Possible Cause........................................................314
Overall Function Check ...........................................314
Diagnostic Procedure ..............................................316
Main 12 Causes of Overheating..............................319

DTC P0300 - P0306 NO. 6 - 1 CYLINDER
MISFIRE, MULTIPLE CYLINDER MISFIRE ...............320

On Board Diagnosis Logic.......................................320
Possible Cause........................................................320
DTC Confirmation Procedure ..................................321
Diagnostic Procedure ..............................................321

DTC P0325 KNOCK SENSOR (KS) ...........................328

Component Description ...........................................328
ECM Terminals and Reference Value .....................328
On Board Diagnosis Logic.......................................328
Possible Cause........................................................328
DTC Confirmation Procedure ..................................328
Wiring Diagram ........................................................330
Diagnostic Procedure ..............................................331

DTC P0335 CRANKSHAFT POSITION SENSOR
(CKPS) (POS) ..............................................................334

Component Description ...........................................334
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................334
ECM Terminals and Reference Value .....................335
On Board Diagnosis Logic.......................................335
Possible Cause........................................................335
DTC Confirmation Procedure ..................................336
Wiring Diagram ........................................................337
Diagnostic Procedure ..............................................338

DTC P0340 CAMSHAFT POSITION SENSOR
(CMPS) (PHASE).........................................................342

Component Description ...........................................342
ECM Terminals and Reference Value .....................342
On Board Diagnosis Logic.......................................342
Possible Cause........................................................343
DTC Confirmation Procedure ..................................343
Wiring Diagram ........................................................344
Diagnostic Procedure ..............................................345

DTC P0420 (RIGHT BANK, -B1), P0430 (LEFT
BANK, -B2) THREE WAY CATALYST FUNCTION ...347

On Board Diagnosis Logic.......................................347
Possible Cause........................................................347
DTC Confirmation Procedure ..................................348
Overall Function Check ...........................................348
Diagnostic Procedure ..............................................349

DTC P0440 EVAP CONTROL SYSTEM (SMALL
LEAK) (NEGATIVE PRESSURE)................................352

On Board Diagnosis Logic.......................................352
Possible Cause........................................................352

DTC Confirmation Procedure ..................................354
Diagnostic Procedure ..............................................355

DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE (CIRCUIT).................367

Description ...............................................................367
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................367
ECM Terminals and Reference Value .....................368
On Board Diagnosis Logic.......................................368
Possible Cause........................................................368
DTC Confirmation Procedure ..................................369
Wiring Diagram ........................................................370
Diagnostic Procedure ..............................................371

DTC P0446 EVAPORATIVE EMISSION (EVAP)
CANISTER VENT CONTROL VALVE (CIRCUIT) ......374

Component Description ...........................................374
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................374
ECM Terminals and Reference Value .....................374
On Board Diagnosis Logic.......................................374
Possible Cause........................................................375
DTC Confirmation Procedure ..................................375
Wiring Diagram ........................................................376
Diagnostic Procedure ..............................................377

DTC P0450 EVAPORATIVE EMISSION (EVAP)
CONTROL SYSTEM PRESSURE SENSOR ..............381

Component Description ...........................................381
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................381
ECM Terminals and Reference Value .....................381
On Board Diagnosis Logic.......................................382
Possible Cause........................................................382
DTC Confirmation Procedure ..................................382
Wiring Diagram ........................................................384
Diagnostic Procedure ..............................................385

DTC P0455 EVAP CONTROL SYSTEM (GROSS
LEAK)...........................................................................394

On Board Diagnosis Logic.......................................394
Possible Cause........................................................394
DTC Confirmation Procedure ..................................396
Diagnostic Procedure ..............................................397

DTC P0460 FUEL LEVEL SENSOR FUNCTION
(SLOSH).......................................................................407

Component Description ...........................................407
On Board Diagnostic Logic......................................407
Possible Cause........................................................407
DTC Confirmation Procedure ..................................407
Wiring Diagram ........................................................408
Diagnostic Procedure ..............................................409

DTC P0461 FUEL LEVEL SENSOR FUNCTION ....... 411

Component Description ........................................... 411
On Board Diagnostic Logic...................................... 411

CONTENTS

(Cont’d)

EC-4

Possible Cause........................................................ 411
Overall Function Check ........................................... 411

DTC P0464 FUEL LEVEL SENSOR CIRCUIT ...........413

Component Description ...........................................413
On Board Diagnostic Logic......................................413
Possible Cause........................................................413
DTC Confirmation Procedure ..................................413
Wiring Diagram ........................................................414
Diagnostic Procedure ..............................................415

DTC P0500 VEHICLE SPEED SENSOR (VSS) .........417

Component Description ...........................................417
ECM Terminals and Reference Value .....................417
On Board Diagnosis Logic.......................................417
Possible Cause........................................................418
DTC Confirmation Procedure ..................................418
Overall Function Check ...........................................418
Wiring Diagram ........................................................420
Diagnostic Procedure ..............................................421

DTC P0505 IDLE AIR CONTROL VALVE (IACV) -
AUXILIARY AIR CONTROL (AAC) VALVE ...............422

Description ...............................................................422
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................423
ECM Terminals and Reference Value .....................423
On Board Diagnosis Logic.......................................423
Possible Cause........................................................423
DTC Confirmation Procedure ..................................423
Wiring Diagram ........................................................425
Diagnostic Procedure ..............................................426

DTC P0510 CLOSED THROTTLE POSITION
SWITCH .......................................................................431

Component Description ...........................................431
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................431
ECM Terminals and Reference Value .....................431
On Board Diagnosis Logic.......................................431
Possible Cause........................................................431
DTC Confirmation Procedure ..................................432
Overall Function Check ...........................................432
Wiring Diagram ........................................................434
Diagnostic Procedure ..............................................435

DTC P0600 A/T COMMUNICATION LINE..................440

System Description..................................................440
ECM Terminals and Reference Value .....................440
On Board Diagnosis Logic.......................................440
Possible Cause........................................................440
DTC Confirmation Procedure ..................................440
Wiring Diagram ........................................................442
Diagnostic Procedure ..............................................443

DTC P0605 ECM .........................................................444

Component Description ...........................................444
On Board Diagnosis Logic.......................................444

Possible Cause........................................................444
DTC Confirmation Procedure ..................................444
Diagnostic Procedure ..............................................445

DTC P1110 (RIGHT, -B1), P1135 (LEFT, -B2)
INTAKE VALVE TIMING CONTROL ..........................446

Description ...............................................................446
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................446
ECM Terminals and Reference Value .....................447
On Board Diagnosis Logic.......................................448
Possible Cause........................................................448
DTC Confirmation Procedure ..................................449

DTC P1111 (RIGHT, -B1), P1136 (LEFT, -B2)
INTAKE VALVE TIMING CONTROL SOLENOID
VALVE (CIRCUIT)........................................................451

Component Description ...........................................451
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................451
ECM Terminals and Reference Value .....................451
On Board Diagnosis Logic.......................................452
Possible Cause........................................................452
DTC Confirmation Procedure ..................................452
Wiring Diagram ........................................................453
Diagnostic Procedure ..............................................455

DTC P1130 SWIRL CONTROL VALVE CONTROL
SOLENOID VALVE......................................................458

Description ...............................................................458
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................459
ECM Terminals and Reference Value .....................459
On Board Diagnosis Logic.......................................459
Possible Cause........................................................460
DTC Confirmation Procedure ..................................460
Wiring Diagram ........................................................462
Diagnostic Procedure ..............................................463

DTC P1140 (RIGHT, -B1), P1145 (LEFT, -B2)
INTAKE VALVE TIMING CONTROL POSITION
SENSOR (CIRCUIT) ....................................................482

Component Description ...........................................482
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................482
ECM Terminals and Reference Value .....................482
On Board Diagnosis Logic.......................................483
Possible Cause........................................................483
DTC Confirmation Procedure ..................................483
Wiring Diagram ........................................................485
Diagnostic Procedure ..............................................487

DTC P1148 (RIGHT BANK, -B1), P1168 (LEFT
BANK, -B2) CLOSED LOOP CONTROL ...................491

On Board Diagnosis Logic.......................................491
Possible Cause........................................................491
DTC Confirmation Procedure ..................................491

IDX

CONTENTS

(Cont’d)

EC-5

Overall Function Check ...........................................492
Diagnostic Procedure ..............................................492

DTC P1165 SWIRL CONTROL VALVE CONTROL
VACUUM CHECK SWITCH.........................................493

Component Description ...........................................493
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................493
ECM Terminals and Reference Value .....................493
On Board Diagnosis Logic.......................................494
Possible Cause........................................................494
DTC Confirmation Procedure ..................................494
Wiring Diagram ........................................................495
Diagnostic Procedure ..............................................496

DTC P1320 IGNITION SIGNAL...................................499

Component Description ...........................................499
ECM Terminals and Reference Value .....................499
On Board Diagnosis Logic.......................................499
Possible Cause........................................................500
DTC Confirmation Procedure ..................................500
Wiring Diagram ........................................................501
Diagnostic Procedure ..............................................504

DTC P1335 CRANKSHAFT POSITION SENSOR
(CKPS) (REF) ..............................................................510

Component Description ...........................................510
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................510
ECM Terminals and Reference Value .....................510
On Board Diagnosis Logic....................................... 511
Possible Cause........................................................ 511
DTC Confirmation Procedure .................................. 511
Wiring Diagram ........................................................513
Diagnostic Procedure ..............................................514

DTC P1336 CRANKSHAFT POSITION SENSOR
(CKPS) (POS) (COG) ..................................................517

Component Description ...........................................517
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................517
ECM Terminals and Reference Value .....................518
On Board Diagnosis Logic.......................................518
Possible Cause........................................................518
DTC Confirmation Procedure ..................................519
Wiring Diagram ........................................................520
Diagnostic Procedure ..............................................521

DTC P1441 EVAP CONTROL SYSTEM (VERY
SMALL LEAK) .............................................................526

On Board Diagnosis Logic.......................................526
Possible Cause........................................................526
DTC Confirmation Procedure ..................................527
Diagnostic Procedure ..............................................529

DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE...................................541

Description ...............................................................541

CONSULT-II Reference Value in Data Monitor
Mode ........................................................................541
ECM Terminals and Reference Value .....................542
On Board Diagnosis Logic.......................................542
Possible Cause........................................................542
DTC Confirmation Procedure ..................................543
Wiring Diagram ........................................................544
Diagnostic Procedure ..............................................545

DTC P1446 EVAPORATIVE EMISSION (EVAP)
CANISTER VENT CONTROL VALVE (CLOSE).........553

Component Description ...........................................553
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................553
ECM Terminals and Reference Value .....................553
On Board Diagnosis Logic.......................................553
Possible Cause........................................................554
DTC Confirmation Procedure ..................................554
Wiring Diagram ........................................................555
Diagnostic Procedure ..............................................556

DTC P1447 EVAPORATIVE EMISSION (EVAP)
CONTROL SYSTEM PURGE FLOW
MONITORING ..............................................................561

System Description..................................................561
On Board Diagnosis Logic.......................................561
Possible Cause........................................................561
DTC Confirmation Procedure ..................................562
Overall Function Check ...........................................563
Diagnostic Procedure ..............................................564

DTC P1448 EVAPORATIVE EMISSION (EVAP)
CANISTER VENT CONTROL VALVE (OPEN)...........573

Component Description ...........................................573
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................573
ECM Terminals and Reference Value .....................573
On Board Diagnosis Logic.......................................573
Possible Cause........................................................574
DTC Confirmation Procedure ..................................574
Overall Function Check ...........................................575
Wiring Diagram ........................................................576
Diagnostic Procedure ..............................................577

DTC P1464 FUEL LEVEL SENSOR CIRCUIT
(GROUND SIGNAL) ....................................................582

Component Description ...........................................582
On Board Diagnostic Logic......................................582
Possible Cause........................................................582
DTC Confirmation Procedure ..................................582
Wiring Diagram ........................................................583
Diagnostic Procedure ..............................................584

DTC P1490 VACUUM CUT VALVE BYPASS
VALVE (CIRCUIT)........................................................585

Description ...............................................................585

CONTENTS

(Cont’d)

EC-6

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