Content .. 146 147 148 149 ..

Infiniti G20 (P11). Manual - part 148

Wiring Diagram ........................................................228
Diagnostic Procedure ..............................................229
Component Inspection.............................................230

DTC P0135 HEATED OXYGEN SENSOR 1
HEATER (FRONT).......................................................232

Description ...............................................................232
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................232
ECM Terminals and Reference Value .....................232
On Board Diagnosis Logic.......................................232
DTC Confirmation Procedure ..................................233
Wiring Diagram ........................................................234
Diagnostic Procedure ..............................................235
Component Inspection.............................................236

DTC P0137 HEATED OXYGEN SENSOR 2
(REAR) (MIN. VOLTAGE MONITORING)...................237

Component Description ...........................................237
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................237
ECM Terminals and Reference Value .....................237
On Board Diagnosis Logic.......................................237
DTC Confirmation Procedure ..................................238
Overall Function Check ...........................................238
Wiring Diagram ........................................................239
Diagnostic Procedure ..............................................240
Component Inspection.............................................243

DTC P0138 HEATED OXYGEN SENSOR 2
(REAR) (MAX. VOLTAGE MONITORING) .................245

Component Description ...........................................245
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................245
ECM Terminals and Reference Value .....................245
On Board Diagnosis Logic.......................................245
DTC Confirmation Procedure ..................................246
Overall Function Check ...........................................246
Wiring Diagram ........................................................247
Diagnostic Procedure ..............................................248
Component Inspection.............................................251

DTC P0139 HEATED OXYGEN SENSOR 2
(REAR) (RESPONSE MONITORING).........................253

Component Description ...........................................253
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................253
ECM Terminals and Reference Value .....................253
On Board Diagnosis Logic.......................................253
DTC Confirmation Procedure ..................................254
Overall Function Check ...........................................254
Wiring Diagram ........................................................255
Diagnostic Procedure ..............................................256
Component Inspection.............................................259

DTC P0140 HEATED OXYGEN SENSOR 2
(REAR) (HIGH VOLTAGE) ..........................................261

Component Description ...........................................261
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................261
ECM Terminals and Reference Value .....................261
On Board Diagnosis Logic.......................................261
DTC Confirmation Procedure ..................................262
Overall Function Check ...........................................262
Wiring Diagram ........................................................263
Diagnostic Procedure ..............................................264
Component Inspection.............................................265

DTC P0141 HEATED OXYGEN SENSOR 2
HEATER (REAR) .........................................................267

Description ...............................................................267
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................267
ECM Terminals and Reference Value .....................267
On Board Diagnosis Logic.......................................267
DTC Confirmation Procedure ..................................268
Wiring Diagram ........................................................269
Diagnostic Procedure ..............................................270
Component Inspection.............................................271

DTC P0171 FUEL INJECTION SYSTEM
FUNCTION (LEAN SIDE) ............................................272

On Board Diagnosis Logic.......................................272
DTC Confirmation Procedure ..................................272
Wiring Diagram ........................................................274
Diagnostic Procedure ..............................................275

DTC P0172 FUEL INJECTION SYSTEM
FUNCTION (RICH SIDE) .............................................279

On Board Diagnosis Logic.......................................279
DTC Confirmation Procedure ..................................279
Wiring Diagram ........................................................281
Diagnostic Procedure ..............................................282

DTC P0180 FUEL TANK TEMPERATURE
SENSOR ......................................................................286

Component Description ...........................................286
On Board Diagnosis Logic.......................................286
DTC Confirmation Procedure ..................................286
Wiring Diagram ........................................................288
Diagnostic Procedure ..............................................289
Component Inspection.............................................290

DTC P0217 COOLANT OVERTEMPERATURE
ENRICHMENT PROTECTION.....................................291

System Description..................................................291
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................291
ECM Terminals and Reference Value .....................292
On Board Diagnosis Logic.......................................292
Possible Cause........................................................292
Overall Function Check ...........................................293
Wiring Diagram ........................................................296
Diagnostic Procedure (A/T Models) ........................298

IDX

CONTENTS

(Cont’d)

EC-3

Diagnostic Procedure (M/T Models)........................309
Main 12 Causes of Overheating..............................321

DTC P0300 - P0304 NO. 4 - 1 CYLINDER
MISFIRE, MULTIPLE CYLINDER MISFIRE ...............322

On Board Diagnosis Logic.......................................322
DTC Confirmation Procedure ..................................322
Diagnostic Procedure ..............................................323
Component Inspection.............................................328

DTC P0325 KNOCK SENSOR (KS) ...........................329

Component Description ...........................................329
ECM Terminals and Reference Value .....................329
On Board Diagnosis Logic.......................................329
DTC Confirmation Procedure ..................................329
Wiring Diagram ........................................................330
Diagnostic Procedure ..............................................331
Component Inspection.............................................332

DTC P0335 CRANKSHAFT POSITION SENSOR
(CKPS) (OBD)..............................................................333

Component Description ...........................................333
ECM Terminals and Reference Value .....................333
On Board Diagnosis Logic.......................................333
DTC Confirmation Procedure ..................................334
Wiring Diagram ........................................................335
Diagnostic Procedure ..............................................336
Component Inspection.............................................338

DTC P0340 CAMSHAFT POSITION SENSOR
(CMPS).........................................................................339

Component Description ...........................................339
ECM Terminals and Reference Value .....................339
On Board Diagnosis Logic.......................................340
DTC Confirmation Procedure ..................................340
Wiring Diagram ........................................................342
Diagnostic Procedure ..............................................343
Component Inspection.............................................346

DTC P0400 EGR FUNCTION (CLOSE)......................347

Description ...............................................................347
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................348
ECM Terminals and Reference Value .....................348
On Board Diagnosis Logic.......................................348
Possible Cause........................................................349
DTC Confirmation Procedure ..................................349
Wiring Diagram ........................................................351
Diagnostic Procedure ..............................................352

DTC P0403 EGR VOLUME CONTROL VALVE
(CIRCUIT).....................................................................357

Description ...............................................................357
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................358
ECM Terminals and Reference Value .....................358
On Board Diagnosis Logic.......................................358
Possible Cause........................................................359

DTC Confirmation Procedure ..................................359
Wiring Diagram ........................................................360
Diagnostic Procedure ..............................................361

DTC P0420 THREE WAY CATALYST FUNCTION ...364

On Board Diagnosis Logic.......................................364
DTC Confirmation Procedure ..................................364
Overall Function Check ...........................................365
Diagnostic Procedure ..............................................365

DTC P0440 EVAP CONTROL SYSTEM (SMALL
LEAK) (NEGATIVE PRESSURE)................................368

On Board Diagnosis Logic.......................................368
Possible Cause........................................................368
DTC Confirmation Procedure ..................................369
Diagnostic Procedure ..............................................370

DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE (CIRCUIT).................382

Description ...............................................................382
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................382
ECM Terminals and Reference Value .....................383
On Board Diagnosis Logic.......................................383
Possible Cause........................................................383
DTC Confirmation Procedure ..................................384
Wiring Diagram ........................................................385
Diagnostic Procedure ..............................................386

DTC P0446 EVAPORATIVE EMISSION (EVAP)
CANISTER VENT CONTROL VALVE (CIRCUIT) ......389

Component Description ...........................................389
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................389
ECM Terminals and Reference Value .....................389
On Board Diagnosis Logic.......................................389
Possible Cause........................................................390
DTC Confirmation Procedure ..................................390
Wiring Diagram ........................................................391
Diagnostic Procedure ..............................................392

DTC P0450 EVAPORATIVE EMISSION (EVAP)
CONTROL SYSTEM PRESSURE SENSOR ..............396

Component Description ...........................................396
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................396
ECM Terminals and Reference Value .....................396
On Board Diagnosis Logic.......................................397
Possible Cause........................................................397
DTC Confirmation Procedure ..................................397
Wiring Diagram ........................................................399
Diagnostic Procedure ..............................................400

DTC P0455 EVAP CONTROL SYSTEM (GROSS
LEAK)...........................................................................409

On Board Diagnosis Logic.......................................409
Possible Cause........................................................409
DTC Confirmation Procedure ..................................410

CONTENTS

(Cont’d)

EC-4

Diagnostic Procedure .............................................. 411

DTC P0460 FUEL LEVEL SENSOR FUNCTION
(SLOSH).......................................................................420

Component Description ...........................................420
ECM Terminals and Reference Value .....................420
On Board Diagnostic Logic......................................420
Possible Cause........................................................420
DTC Confirmation Procedure ..................................421
Wiring Diagram ........................................................422
Diagnostic Procedure ..............................................423

DTC P0461 FUEL LEVEL SENSOR FUNCTION .......425

Component Description ...........................................425
On Board Diagnostic Logic......................................425
Possible Cause........................................................425
Overall Function Check ...........................................425

DTC P0464 FUEL LEVEL SENSOR CIRCUIT ...........427

Component Description ...........................................427
ECM Terminals and Reference Value .....................427
On Board Diagnostic Logic......................................427
Possible Cause........................................................427
DTC Confirmation Procedure ..................................428
Wiring Diagram ........................................................429
Diagnostic Procedure ..............................................430

DTC P0500 VEHICLE SPEED SENSOR (VSS) .........432

Component Description ...........................................432
ECM Terminals and Reference Value .....................432
On Board Diagnosis Logic.......................................432
DTC Confirmation Procedure ..................................432
Overall Function Check ...........................................433
Wiring Diagram ........................................................434
Diagnostic Procedure ..............................................435

DTC P0505 IDLE AIR CONTROL VALVE (IACV) -
AUXILIARY AIR CONTROL (AAC) VALVE ...............436

Description ...............................................................436
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................437
ECM Terminals and Reference Value .....................437
On Board Diagnosis Logic.......................................437
DTC Confirmation Procedure ..................................437
Wiring Diagram ........................................................439
Diagnostic Procedure ..............................................440

DTC P0510 CLOSED THROTTLE POSITION
SWITCH .......................................................................445

Component Description ...........................................445
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................445
ECM Terminals and Reference Value .....................445
On Board Diagnosis Logic.......................................445
DTC Confirmation Procedure ..................................446
Overall Function Check ...........................................446
Wiring Diagram ........................................................447
Diagnostic Procedure ..............................................448

DTC P0600 A/T CONTROL.........................................453

System Description..................................................453
ECM Terminals and Reference Value .....................453
On Board Diagnosis Logic.......................................453
DTC Confirmation Procedure ..................................453
Wiring Diagram ........................................................454
Diagnostic Procedure ..............................................455

DTC P0605 ECM .........................................................456

Component Description ...........................................456
On Board Diagnosis Logic.......................................456
DTC Confirmation Procedure ..................................456
Diagnostic Procedure ..............................................457

DTC P1126 THERMOSTAT FUNCTION.....................458

On Board Diagnosis Logic.......................................458
Possible Cause........................................................458
DTC Confirmation Procedure ..................................458
Diagnostic Procedure ..............................................459

DTC P1148 CLOSED LOOP CONTROL ....................460

On Board Diagnosis Logic.......................................460
DTC Confirmation Procedure ..................................460
Overall Function Check ...........................................461
Diagnostic Procedure ..............................................461

DTC P1217 ENGINE OVER TEMPERATURE
(OVERHEAT) ...............................................................462

System Description..................................................462
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................462
ECM Terminals and Reference Value .....................463
On Board Diagnosis Logic.......................................463
Overall Function Check ...........................................464
Wiring Diagram ........................................................465
Diagnostic Procedure (A/T Models) ........................467
Diagnostic Procedure (M/T Models)........................478
Main 12 Causes of Overheating..............................490

DTC P1336 CRANKSHAFT POSITION SENSOR
(CKPS) (OBD) (COG)..................................................491

Component Description ...........................................491
ECM Terminals and Reference Value .....................491
On Board Diagnosis Logic.......................................491
DTC Confirmation Procedure ..................................492
Wiring Diagram ........................................................493
Diagnostic Procedure ..............................................494
Component Inspection.............................................496

DTC P1401 EGR TEMPERATURE SENSOR.............497

Component Description ...........................................497
On Board Diagnosis Logic.......................................497
Possible Cause........................................................497
DTC Confirmation Procedure ..................................498
Wiring Diagram ........................................................500
Diagnostic Procedure ..............................................501

DTC P1402 EGR FUNCTION (OPEN) ........................505

Description ...............................................................505

IDX

CONTENTS

(Cont’d)

EC-5

CONSULT-II Reference Value in Data Monitor
Mode ........................................................................506
ECM Terminals and Reference Value .....................506
On Board Diagnosis Logic.......................................506
Possible Cause........................................................507
DTC Confirmation Procedure ..................................507
Wiring Diagram ........................................................509
Diagnostic Procedure ..............................................510

DTC P1440 EVAP CONTROL SYSTEM (SMALL
LEAK) (POSITIVE PRESSURE) .................................515

On Board Diagnosis Logic.......................................515
Possible Cause........................................................515
DTC Confirmation Procedure ..................................516
Diagnostic Procedure ..............................................516

DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE...................................517

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 P1446 EVAPORATIVE EMISSION (EVAP)
CANISTER VENT CONTROL VALVE (CLOSE).........529

Component Description ...........................................529
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................529
ECM Terminals and Reference Value .....................529
On Board Diagnosis Logic.......................................529
Possible Cause........................................................530
DTC Confirmation Procedure ..................................530
Wiring Diagram ........................................................531
Diagnostic Procedure ..............................................532

DTC P1447 EVAPORATIVE EMISSION (EVAP)
CONTROL SYSTEM PURGE FLOW
MONITORING ..............................................................537

System Description..................................................537
On Board Diagnosis Logic.......................................537
Possible Cause........................................................537
DTC Confirmation Procedure ..................................538
Overall Function Check ...........................................538
Diagnostic Procedure ..............................................540

DTC P1448 EVAPORATIVE EMISSION (EVAP)
CANISTER VENT CONTROL VALVE (OPEN)...........549

Component Description ...........................................549
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................549
ECM Terminals and Reference Value .....................549
On Board Diagnosis Logic.......................................549

Possible Cause........................................................550
DTC Confirmation Procedure ..................................550
Overall Function Check ...........................................551
Wiring Diagram ........................................................552
Diagnostic Procedure ..............................................553

DTC P1464 FUEL LEVEL SENSOR CIRCUIT
(GROUND SIGNAL) ....................................................558

Component Description ...........................................558
ECM Terminals and Reference Value .....................558
On Board Diagnostic Logic......................................558
Possible Cause........................................................558
DTC Confirmation Procedure ..................................559
Wiring Diagram ........................................................560
Diagnostic Procedure ..............................................561

DTC P1490 VACUUM CUT VALVE BYPASS
VALVE (CIRCUIT)........................................................562

Description ...............................................................562
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................562
ECM Terminals and Reference Value .....................562
On Board Diagnosis Logic.......................................563
Possible Cause........................................................563
DTC Confirmation Procedure ..................................563
Wiring Diagram ........................................................564
Diagnostic Procedure ..............................................565

DTC P1491 VACUUM CUT VALVE BYPASS
VALVE..........................................................................568

Description ...............................................................568
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................568
ECM Terminals and Reference Value .....................568
On Board Diagnosis Logic.......................................569
Possible Cause........................................................569
DTC Confirmation Procedure ..................................569
Overall Function Check ...........................................570
Wiring Diagram ........................................................571
Diagnostic Procedure ..............................................572

DTC P1605 A/T DIAGNOSIS COMMUNICATION
LINE .............................................................................580

System Description..................................................580
ECM Terminals and Reference Value .....................580
On Board Diagnosis Logic.......................................580
DTC Confirmation Procedure ..................................580
Wiring Diagram ........................................................581
Diagnostic Procedure ..............................................582

DTC P1706 PARK/NEUTRAL POSITION (PNP)
SWITCH .......................................................................583

Component Description ...........................................583
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................583
ECM Terminals and Reference Value .....................583
On Board Diagnosis Logic.......................................583

CONTENTS

(Cont’d)

EC-6

Content .. 146 147 148 149 ..