Infiniti G35 (V35). Manual — part 280

EC-1

ENGINE CONTROL SYSTEM

B ENGINE

CONTENTS

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D

E

F

G

H

I

J

K

L

M

SECTION

A

EC

ENGINE CONTROL SYSTEM

INDEX FOR DTC . . . . . . . . . . . . . . 8

DTC No. Index . . . . . . . . . . . . . . . 8
Alphabetical Index . . . . . . . . . . . . .. 12

PRECAUTIONS . . . . . . . . . . . . . . 16

Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” . . . . . . . . . . . . . . . . 16
Precautions for Battery Service . . . . . . . .. 16
On Board Diagnostic (OBD) System of Engine and
A/T . . . . . . . . . . . . . . . . . . .. 16
Precaution . . . . . . . . . . . . . . . .. 17

PREPARATION . . . . . . . . . . . . . . . 20

Special Service Tools . . . . . . . . . . . . 20
Commercial Service Tools . . . . . . . . . .. 21

ENGINE CONTROL SYSTEM . . . . . . . . .. 22

System Diagram (A/T models) . . . . . . . ... 22
System Diagram (M/T models) . . . . . . . .. 23
Multiport Fuel Injection (MFI) System . . . . . 24
Electronic Ignition (EI) System . . . . . . . ... 26
Fuel Cut Control (at No Load and High Engine
Speed) . . . . . . . . . . . . . . . . . 27

AIR CONDITIONING CUT CONTROL . . . . . . 28

Input/Output Signal Chart . . . . . . . . . ... 28

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

... 29

System Description . . . . . . . . . . . . 29
Component Description . . . . . . . . . . .. 30

CAN COMMUNICATION . . . . . . . . . . .. 31

System Description . . . . . . . . . . . . 31

EVAPORATIVE EMISSION SYSTEM . . . . . ... 32

Description . . . . . . . . . . . . . . . . 32
Component Inspection . . . . . . . . . . ... 35
Removal and Installation . . . . . . . . . . 36
How to Detect Fuel Vapor Leakage . . . . . ... 36

ON BOARD REFUELING VAPOR RECOVERY
(ORVR) . . . . . . . . . . . . . . . . . .. 39

System Description . . . . . . . . . . . . 39
Diagnostic Procedure . . . . . . . . . . . . 40
Component Inspection . . . . . . . . . . ... 42

POSITIVE CRANKCASE VENTILATION . . . . . 44

Description . . . . . . . . . . . . . . . .. 44
Component Inspection . . . . . . . . . . . 44

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) . . . . . . . . . . . . . . . . . . 46

Description . . . . . . . . . . . . . . . .. 46

ON BOARD DIAGNOSTIC (OBD) SYSTEM . . . 47

Introduction . . . . . . . . . . . . . . . . 47
Two Trip Detection Logic . . . . . . . . . . 47
Emission-Related Diagnostic Information . . . ... 48
Malfunction Indicator Lamp (MIL) . . . . . . ... 62
OBD System Operation Chart . . . . . . . . 66

BASIC SERVICE PROCEDURE . . . . . . . ... 71

Basic Inspection . . . . . . . . . . . . . . 71
Idle Speed and Ignition Timing Check . . . . . 76
Procedure After Replacing ECM . . . . . . . 77
VIN Registration . . . . . . . . . . . . . . 77
Exhaust Valve Timing Control Learning (M/T mod-
els) . . . . . . . . . . . . . . . . . . .. 78
Accelerator Pedal Released Position Learning . .. 79
Throttle Valve Closed Position Learning . . . . . 79
Idle Air Volume Learning . . . . . . . . . . 79
Fuel Pressure Check . . . . . . . . . . . .. 81

TROUBLE DIAGNOSIS . . . . . . . . . . . 83

Trouble Diagnosis Introduction . . . . . . . ... 83
DTC Inspection Priority Chart . . . . . . . . . 89
Fail-Safe Chart . . . . . . . . . . . . . ... 91
Symptom Matrix Chart . . . . . . . . . . . 92
Engine Control Component Parts Location (A/T
models) . . . . . . . . . . . . . . . . ... 96
Engine Control Component Parts Location (M/T
models) . . . . . . . . . . . . . . . . . 102
Vacuum Hose Drawing . . . . . . . . . . . 108
Circuit Diagram . . . . . . . . . . . . . . 109
ECM Harness Connector Terminal Layout . . . 111
ECM Terminals and Reference Value . . . . . 111
CONSULT-II Function (ENGINE) . . . . . . .. 121
Generic Scan Tool (GST) Function . . . . . ... 133
CONSULT-II Reference Value in Data Monitor . . 135
Major Sensor Reference Graph in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 139

EC-2

TROUBLE DIAGNOSIS - SPECIFICATION VALUE .141

Description . . . . . . . . . . . . . . . 141
Testing Condition . . . . . . . . . . . . .. 141
Inspection Procedure . . . . . . . . . . . 141
Diagnostic Procedure . . . . . . . . . . ... 142

TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT . . . . . . . . . . . . . . . . . ... 151

Description . . . . . . . . . . . . . . . 151
Diagnostic Procedure . . . . . . . . . . ... 151

POWER SUPPLY AND GROUND CIRCUIT . . ... 152

Wiring Diagram . . . . . . . . . . . . . . 152
Diagnostic Procedure . . . . . . . . . . ... 155
Ground Inspection . . . . . . . . . . . . 159

DTC U1000, U1001 CAN COMMUNICATION LINE .161

Description . . . . . . . . . . . . . . . 161
On Board Diagnosis Logic . . . . . . . . . 161
DTC Confirmation Procedure . . . . . . . ... 161
Wiring Diagram . . . . . . . . . . . . . . 162
Diagnostic Procedure . . . . . . . . . . ... 163

DTC U1010 CAN COMMUNICATION . . . . . . 164

Description . . . . . . . . . . . . . . . 164
On Board Diagnosis Logic . . . . . . . . . 164
DTC Confirmation Procedure . . . . . . . ... 164
Diagnostic Procedure . . . . . . . . . . ... 165

DTC P0011, P0021 IVT CONTROL . . . . . . 166

Description . . . . . . . . . . . . . . . 166
CONSULT-II Reference Value in Data Monitor Mode

. 166

On Board Diagnosis Logic . . . . . . . . . 167
DTC Confirmation Procedure . . . . . . . ... 167
Diagnostic Procedure . . . . . . . . . . ... 168
Component Inspection . . . . . . . . . . .. 170
Removal and Installation . . . . . . . . . .. 170

DTC P0014 P0024 EVT CONTROL . . . . . . 171

Description . . . . . . . . . . . . . . . 171
CONSULT-II Reference Value in Data Monitor Mode

. 171

On Board Diagnosis Logic . . . . . . . . . 172
DTC Confirmation Procedure . . . . . . . ... 172
Diagnostic Procedure . . . . . . . . . . ... 173
Component Inspection . . . . . . . . . . .. 175
Removal and Installation . . . . . . . . . .. 175

DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER . . . . . . . . . . . . . . . . .. 176

Description . . . . . . . . . . . . . . . 176
CONSULT-II Reference Value in Data Monitor Mode

. 176

On Board Diagnosis Logic . . . . . . . . . 176
DTC Confirmation Procedure . . . . . . . ... 176
Wiring Diagram . . . . . . . . . . . . . . 177
Diagnostic Procedure . . . . . . . . . . ... 180
Component Inspection . . . . . . . . . . .. 182
Removal and Installation . . . . . . . . . .. 182

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .183

Description . . . . . . . . . . . . . . . 183
CONSULT-II Reference Value in Data Monitor Mode

. 183

On Board Diagnosis Logic . . . . . . . . . 183
DTC Confirmation Procedure . . . . . . . ... 184

Wiring Diagram . . . . . . . . . . . . . .185
Diagnostic Procedure . . . . . . . . . . . 188
Component Inspection . . . . . . . . . . ..190
Removal and Installation . . . . . . . . . ...190

DTC P0075, P0081 IVT CONTROL SOLENOID
VALVE . . . . . . . . . . . . . . . . . ..191

Component Description . . . . . . . . . . 191
CONSULT-II Reference Value in Data Monitor Mode

.191

On Board Diagnosis Logic . . . . . . . . . 191
DTC Confirmation Procedure . . . . . . . . 191
Wiring Diagram . . . . . . . . . . . . . .192
Diagnostic Procedure . . . . . . . . . . . 196
Component Inspection . . . . . . . . . . ..198
Removal and Installation . . . . . . . . . ...198

DTC P0078 P0084 EVT CONTROL MAGNET
RETARDER . . . . . . . . . . . . . . . .199

Component Description . . . . . . . . . . 199
CONSULT-II Reference Value in Data Monitor Mode

.199

On Board Diagnosis Logic . . . . . . . . . 199
DTC Confirmation Procedure . . . . . . . . 199
Wiring Diagram . . . . . . . . . . . . . .200
Diagnostic Procedure . . . . . . . . . . . 204
Component Inspection . . . . . . . . . . ..206
Removal and Installation . . . . . . . . . ...206

DTC P0101 MAF SENSOR . . . . . . . . . .207

Component Description . . . . . . . . . . 207
CONSULT-II Reference Value in Data Monitor Mode

.207

On Board Diagnosis Logic . . . . . . . . . 207
DTC Confirmation Procedure . . . . . . . . 208
Overall Function Check . . . . . . . . . . .209
Wiring Diagram . . . . . . . . . . . . . .210
Diagnostic Procedure . . . . . . . . . . . 211
Component Inspection . . . . . . . . . . ..213
Removal and Installation . . . . . . . . . ...215

DTC P0102, P0103 MAF SENSOR . . . . . . .216

Component Description . . . . . . . . . . 216
CONSULT-II Reference Value in Data Monitor Mode

.216

On Board Diagnosis Logic . . . . . . . . . 216
DTC Confirmation Procedure . . . . . . . . 217
Wiring Diagram . . . . . . . . . . . . . .218
Diagnostic Procedure . . . . . . . . . . . 219
Component Inspection . . . . . . . . . . ..221
Removal and Installation . . . . . . . . . ...222

DTC P0112, P0113 IAT SENSOR . . . . . . . 223

Component Description . . . . . . . . . . 223
On Board Diagnosis Logic . . . . . . . . . 223
DTC Confirmation Procedure . . . . . . . . 223
Wiring Diagram . . . . . . . . . . . . . .224
Diagnostic Procedure . . . . . . . . . . . 225
Component Inspection . . . . . . . . . . ..226
Removal and Installation . . . . . . . . . ...226

DTC P0117, P0118 ECT SENSOR . . . . . . ..227

Component Description . . . . . . . . . . 227
On Board Diagnosis Logic . . . . . . . . . 227
DTC Confirmation Procedure . . . . . . . . 228

EC-3

C

D

E

F

G

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L

M

EC

A

Wiring Diagram . . . . . . . . . . . . . 229
Diagnostic Procedure . . . . . . . . . . ... 230
Component Inspection . . . . . . . . . . . 231
Removal and Installation . . . . . . . . . .. 231

DTC P0122, P0123 TP SENSOR . . . . . . ... 232

Component Description . . . . . . . . . . 232
CONSULT-II Reference Value in Data Monitor Mode

. 232

On Board Diagnosis Logic . . . . . . . . ... 232
DTC Confirmation Procedure . . . . . . . ... 233
Wiring Diagram . . . . . . . . . . . . . 234
Diagnostic Procedure . . . . . . . . . . ... 235
Component Inspection . . . . . . . . . . . 238
Removal and Installation . . . . . . . . . .. 238

DTC P0125 ECT SENSOR . . . . . . . . . . 239

Component Description . . . . . . . . . . 239
On Board Diagnosis Logic . . . . . . . . ... 239
DTC Confirmation Procedure . . . . . . . ... 240
Diagnostic Procedure . . . . . . . . . . ... 240
Component Inspection . . . . . . . . . . . 241
Removal and Installation . . . . . . . . . .. 241

DTC P0127 IAT SENSOR . . . . . . . . . ... 242

Component Description . . . . . . . . . . 242
On Board Diagnosis Logic . . . . . . . . ... 242
DTC Confirmation Procedure . . . . . . . ... 242
Diagnostic Procedure . . . . . . . . . . ... 243
Component Inspection . . . . . . . . . . . 244
Removal and Installation . . . . . . . . . .. 244

DTC P0128 THERMOSTAT FUNCTION . . . . 245

On Board Diagnosis Logic . . . . . . . . ... 245
DTC Confirmation Procedure . . . . . . . ... 245
Diagnostic Procedure . . . . . . . . . . ... 245
Component Inspection . . . . . . . . . . . 246
Removal and Installation . . . . . . . . . .. 246

DTC P0130, P0150 A/F SENSOR 1 . . . . . ... 247

Component Description . . . . . . . . . . 247
CONSULT-II Reference Value in Data Monitor Mode

. 247

On Board Diagnosis Logic . . . . . . . . ... 247
DTC Confirmation Procedure . . . . . . . ... 247
Overall Function Check . . . . . . . . . . 249
Wiring Diagram . . . . . . . . . . . . . 250
Diagnostic Procedure . . . . . . . . . . ... 253
Removal and Installation . . . . . . . . . .. 256

DTC P0131, P0151 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 . . . . . . . ... 257
Wiring Diagram . . . . . . . . . . . . . 259
Diagnostic Procedure . . . . . . . . . . ... 262
Removal and Installation . . . . . . . . . .. 265

DTC P0132, P0152 A/F SENSOR 1 . . . . . ... 266

Component Description . . . . . . . . . . 266
CONSULT-II Reference Value in Data Monitor Mode

. 266

On Board Diagnosis Logic . . . . . . . . ... 266
DTC Confirmation Procedure . . . . . . . ... 266

Wiring Diagram . . . . . . . . . . . . . . 268
Diagnostic Procedure . . . . . . . . . . ... 271
Removal and Installation . . . . . . . . . .. 274

DTC P0133, P0153 A/F SENSOR 1 . . . . . ... 275

Component Description . . . . . . . . . . 275
CONSULT-II Reference Value in Data Monitor Mode

. 275

On Board Diagnosis Logic . . . . . . . . . 275
DTC Confirmation Procedure . . . . . . . ... 276
Wiring Diagram . . . . . . . . . . . . . . 278
Diagnostic Procedure . . . . . . . . . . ... 281
Removal and Installation . . . . . . . . . .. 286

DTC P0137, P0157 HO2S2 . . . . . . . . . . 287

Component Description . . . . . . . . . . 287
CONSULT-II Reference Value in Data Monitor Mode

. 287

On Board Diagnosis Logic . . . . . . . . . 287
DTC Confirmation Procedure . . . . . . . ... 288
Overall Function Check . . . . . . . . . . 288
Wiring Diagram . . . . . . . . . . . . . . 290
Diagnostic Procedure . . . . . . . . . . ... 293
Component Inspection . . . . . . . . . . .. 296
Removal and Installation . . . . . . . . . .. 297

DTC P0138, P0158 HO2S2 . . . . . . . . . . 298

Component Description . . . . . . . . . . 298
CONSULT-II Reference Value in Data Monitor Mode

. 298

On Board Diagnosis Logic . . . . . . . . . 298
DTC Confirmation Procedure . . . . . . . ... 299
Overall Function Check . . . . . . . . . . 299
Wiring Diagram . . . . . . . . . . . . . . 300
Diagnostic Procedure . . . . . . . . . . ... 303
Component Inspection . . . . . . . . . . .. 308
Removal and Installation . . . . . . . . . .. 309

DTC P0139, P0159 HO2S2 . . . . . . . . . . 310

Component Description . . . . . . . . . . 310
CONSULT-II Reference Value in Data Monitor Mode

. 310

On Board Diagnosis Logic . . . . . . . . . 310
DTC Confirmation Procedure . . . . . . . ... 311
Overall Function Check . . . . . . . . . . 311
Wiring Diagram . . . . . . . . . . . . . . 313
Diagnostic Procedure . . . . . . . . . . ... 316
Component Inspection . . . . . . . . . . .. 319
Removal and Installation . . . . . . . . . .. 320

DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . . . .. 321

On Board Diagnosis Logic . . . . . . . . . 321
DTC Confirmation Procedure . . . . . . . ... 321
Wiring Diagram . . . . . . . . . . . . . . 323
Diagnostic Procedure . . . . . . . . . . ... 327

DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . . . .. 333

On Board Diagnosis Logic . . . . . . . . . 333
DTC Confirmation Procedure . . . . . . . ... 333
Wiring Diagram . . . . . . . . . . . . . . 335
Diagnostic Procedure . . . . . . . . . . ... 339

DTC P0181 FTT SENSOR . . . . . . . . . .. 344

Component Description . . . . . . . . . . 344

EC-4

On Board Diagnosis Logic . . . . . . . . . 344
DTC Confirmation Procedure . . . . . . . ... 344
Wiring Diagram . . . . . . . . . . . . . . 346
Diagnostic Procedure . . . . . . . . . . ... 347
Component Inspection . . . . . . . . . . .. 348
Removal and Installation . . . . . . . . . .. 348

DTC P0182, P0183 FTT SENSOR . . . . . . .. 349

Component Description . . . . . . . . . . 349
On Board Diagnosis Logic . . . . . . . . . 349
DTC Confirmation Procedure . . . . . . . ... 349
Wiring Diagram . . . . . . . . . . . . . . 350
Diagnostic Procedure . . . . . . . . . . ... 351
Component Inspection . . . . . . . . . . .. 352
Removal and Installation . . . . . . . . . .. 352

DTC P0222, P0223 TP SENSOR . . . . . . . 353

Component Description . . . . . . . . . . 353
CONSULT-II Reference Value in Data Monitor Mode

. 353

On Board Diagnosis Logic . . . . . . . . . 353
DTC Confirmation Procedure . . . . . . . ... 354
Wiring Diagram . . . . . . . . . . . . . . 355
Diagnostic Procedure . . . . . . . . . . ... 356
Component Inspection . . . . . . . . . . .. 359
Removal and Installation . . . . . . . . . .. 359

DTC P0300 - P0306 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 6 CYLINDER MISFIRE . . . . . . 360

On Board Diagnosis Logic . . . . . . . . . 360
DTC Confirmation Procedure . . . . . . . ... 361
Diagnostic Procedure . . . . . . . . . . ... 361

DTC P0327, P0328 KS . . . . . . . . . . . 370

Component Description . . . . . . . . . . 370
On Board Diagnosis Logic . . . . . . . . . 370
DTC Confirmation Procedure . . . . . . . ... 370
Wiring Diagram . . . . . . . . . . . . . . 371
Diagnostic Procedure . . . . . . . . . . ... 372
Component Inspection . . . . . . . . . . .. 373
Removal and Installation . . . . . . . . . .. 374

DTC P0335 CKP SENSOR (POS) . . . . . . .. 375

Component Description . . . . . . . . . . 375
CONSULT-II Reference Value in Data Monitor Mode

. 375

On Board Diagnosis Logic . . . . . . . . . 375
DTC Confirmation Procedure . . . . . . . ... 376
Wiring Diagram . . . . . . . . . . . . . . 377
Diagnostic Procedure . . . . . . . . . . ... 378
Component Inspection . . . . . . . . . . .. 381
Removal and Installation . . . . . . . . . .. 381

DTC P0340, P0345 CMP SENSOR (PHASE) . . . 382

Component Description . . . . . . . . . . 382
CONSULT-II Reference Value in Data Monitor Mode

. 382

On Board Diag nosis Logic . . . . . . . . ... 382
DTC Confirmation Procedure . . . . . . . ... 383
Wiring Diagram . . . . . . . . . . . . . . 384
Diagnostic Procedure . . . . . . . . . . ... 387
Component Inspection . . . . . . . . . . .. 391
Removal and Installation . . . . . . . . . .. 391

DTC P0420, P0430 THREE WAY CATALYST FUNC-
TION . . . . . . . . . . . . . . . . . . 392

On Board Diagnosis Logic . . . . . . . . . 392
DTC Confirmation Procedure . . . . . . . . 392
Overall Function Check . . . . . . . . . . .393
Diagnostic Procedure . . . . . . . . . . . 394

DTC P0441 EVAP CONTROL SYSTEM . . . . .398

System Description . . . . . . . . . . . ...398
On Board Diagnosis Logic . . . . . . . . . 398
DTC Confirmation Procedure . . . . . . . . 398
Overall Function Check . . . . . . . . . . .399
Diagnostic Procedure . . . . . . . . . . . 400

DTC P0442 EVAP CONTROL SYSTEM . . . . .403

On Board Diagnosis Logic . . . . . . . . . 403
DTC Confirmation Procedure . . . . . . . . 404
Diagnostic Procedure . . . . . . . . . . . 405

DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE . . . . . . . ... 411

Description . . . . . . . . . . . . . . . 411
CONSULT-II Reference Value in Data Monitor Mode

. 411

On Board Diagnosis Logic . . . . . . . . . 412
DTC Confirmation Procedure . . . . . . . . 412
Wiring Diagram . . . . . . . . . . . . . .413
Diagnostic Procedure . . . . . . . . . . . 415
Component Inspection . . . . . . . . . . ..417
Removal and Installation . . . . . . . . . ...418

DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE . . . . . ..419

Description . . . . . . . . . . . . . . . 419
CONSULT-II Reference Value in Data Monitor Mode

.419

On Board Diagnosis Logic . . . . . . . . . 420
DTC Confirmation Procedure . . . . . . . . 420
Wiring Diagram . . . . . . . . . . . . . .421
Diagnostic Procedure . . . . . . . . . . . 423
Component Inspection . . . . . . . . . . ..424
Removal and Installation . . . . . . . . . ...425

DTC P0447 EVAP CANISTER VENT CONTROL
VALVE . . . . . . . . . . . . . . . . . ..426

Component Description . . . . . . . . . . 426
CONSULT-II Reference Value in Data Monitor Mode

.426

On Board Diagnosis Logic . . . . . . . . . 426
DTC Confirmation Procedure . . . . . . . . 427
Wiring Diagram . . . . . . . . . . . . . .428
Diagnostic Procedure . . . . . . . . . . . 429
Component Inspection . . . . . . . . . . ..431

DTC P0448 EVAP CANISTER VENT CONTROL
VALVE . . . . . . . . . . . . . . . . . ..433

Component Description . . . . . . . . . . 433
CONSULT-II Reference Value in Data Monitor Mode

.433

On Board Diagnosis Logic . . . . . . . . . 433
DTC Confirmation Procedure . . . . . . . . 434
Wiring Diagram . . . . . . . . . . . . . .435
Diagnostic Procedure . . . . . . . . . . . 436
Component Inspection . . . . . . . . . . ..438

DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR . . . . . . . . . . . . . . . . ..440

Component Description . . . . . . . . . . 440