Index Infiniti Infiniti M45 (Y34) - service repair manual 2004 year

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Infiniti M45 (Y34). Manual - part 328

EC-1

ENGINE CONTROL SYSTEM

B ENGINE

CONTENTS

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SECTION

EC

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EC

ENGINE CONTROL SYSTEM

INDEX FOR DTC ........................................................ 9

Alphabetical Index .................................................... 9
DTC No. Index ....................................................... 13

PRECAUTIONS ........................................................ 17

Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 17
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 17
Precaution .............................................................. 17
Wiring Diagrams and Trouble Diagnosis ................ 20

PREPARATION ......................................................... 21

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

ENGINE CONTROL SYSTEM .................................. 23

System Diagram ..................................................... 23
Vacuum Hose Drawing ........................................... 24
System Chart  ......................................................... 25
Multiport Fuel Injection (MFI) System  .................... 26
Electronic Ignition (EI) System  ............................... 28
Nissan Torque Demand (NTD) Control System  ..... 29
Air Conditioning Cut Control ................................... 30
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 30
CAN Communication .............................................. 30

BASIC SERVICE PROCEDURE .............................. 32

Idle Speed and Ignition Timing Check .................... 32
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment ............................................................. 33
Accelerator Pedal Released Position Learning  ...... 44
Throttle Valve Closed Position Learning  ................ 44
Idle Air Volume Learning  ........................................ 44
Fuel Pressure Check .............................................. 46

ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 49

Introduction ............................................................ 49
Two Trip Detection Logic ........................................ 49
Emission-Related Diagnostic Information .............. 50
IVIS (Infiniti Vehicle Immobilizer System — NATS)

Malfunction Indicator Lamp (MIL) ........................... 64
OBD System Operation Chart ................................ 68

TROUBLE DIAGNOSIS ............................................ 73

Trouble Diagnosis Introduction  ............................... 73
DTC Inspection Priority Chart ................................. 78
Fail-Safe Chart  ....................................................... 80
Basic Inspection  ..................................................... 81
Symptom Matrix Chart ............................................ 86
Engine Control Component Parts Location  ............ 90
Circuit Diagram ....................................................... 96
ECM Harness Connector Terminal Layout  ............. 98
ECM Terminals and Reference Value ..................... 98
CONSULT-II Function (ENGINE) .......................... 108
Generic Scan Tool (GST) Function ....................... 121
CONSULT-II Reference Value in Data Monitor Mode

Major Sensor Reference Graph in Data Monitor
Mode ..................................................................... 126

TROUBLE DIAGNOSIS - SPECIFICATION VALUE .128

Description ............................................................ 128
Testing Condition .................................................. 128
Inspection Procedure ............................................ 128
Diagnostic Procedure ........................................... 129

TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ....................................................................... 132

Description ............................................................ 132
Diagnostic Procedure ........................................... 132

POWER SUPPLY AND GROUND CIRCUIT ........... 133

Wiring Diagram ..................................................... 133
Diagnostic Procedure ........................................... 136
Ground Inspection ................................................ 141
Component Inspection .......................................... 142

DTC U1000, U1001 CAN COMMUNICATION LINE .143

Description ............................................................ 143
On Board Diagnosis Logic .................................... 143
DTC Confirmation Procedure ............................... 143
Wiring Diagram ..................................................... 144
Diagnostic Procedure ........................................... 145

DTC P0011, P0021 IVT CONTROL ........................ 146

Description ............................................................ 146
CONSULT-II Reference Value in Data Monitor Mode

EC-2

On Board Diagnosis Logic  .................................... 147
DTC Confirmation Procedure  ............................... 148
Wiring Diagram  ..................................................... 149
Diagnostic Procedure  ........................................... 152
Component Inspection .......................................... 155
Removal and Installation  ...................................... 156

DTC P0031, P0032, P0051, P0052 HO2S1 HEATER .157

Description ............................................................ 157
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  .................................... 157
DTC Confirmation Procedure  ............................... 158
Wiring Diagram  ..................................................... 159
Diagnostic Procedure  ........................................... 162
Component Inspection .......................................... 164
Removal and Installation  ...................................... 164

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .165

Description ............................................................ 165
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  .................................... 165
DTC Confirmation Procedure  ............................... 166
Wiring Diagram  ..................................................... 167
Diagnostic Procedure  ........................................... 170
Component Inspection .......................................... 173
Removal and Installation  ...................................... 173

DTC P0101 MAF SENSOR ..................................... 174

Component Description ........................................ 174
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  .................................... 174
DTC Confirmation Procedure  ............................... 175
Overall Function Check  ........................................ 176
Wiring Diagram  ..................................................... 177
Diagnostic Procedure  ........................................... 178
Component Inspection .......................................... 181
Removal and Installation  ...................................... 181

DTC P0102, P0103 MAF SENSOR ......................... 182

Component Description ........................................ 182
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  .................................... 182
DTC Confirmation Procedure  ............................... 183
Wiring Diagram  ..................................................... 184
Diagnostic Procedure  ........................................... 185
Component Inspection .......................................... 188
Removal and Installation  ...................................... 188

DTC P0112, P0113 IAT SENSOR ........................... 189

Component Description  ........................................ 189
On Board Diagnosis Logic  .................................... 189
DTC Confirmation Procedure  ............................... 189
Wiring Diagram  ..................................................... 190
Diagnostic Procedure  ........................................... 191
Component Inspection .......................................... 192
Removal and Installation  ...................................... 192

DTC P0117, P0118 ECT SENSOR .......................... 193

Component Description  ........................................ 193
On Board Diagnosis Logic  .................................... 193
DTC Confirmation Procedure  ............................... 194

Wiring Diagram .....................................................195
Diagnostic Procedure ............................................196
Component Inspection ..........................................197
Removal and Installation .......................................198

DTC P0122, P0123 TP SENSOR ............................199

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

On Board Diagnosis Logic  ....................................199
DTC Confirmation Procedure ................................200
Wiring Diagram  .....................................................201
Diagnostic Procedure ............................................202
Component Inspection  ..........................................204
Removal and Installation .......................................204

DTC P0125 ECT SENSOR ......................................205

Component Description  ........................................205
On Board Diagnosis Logic  ....................................205
DTC Confirmation Procedure ................................206
Diagnostic Procedure ............................................206
Component Inspection  ..........................................207
Removal and Installation .......................................207

DTC P0127 IAT SENSOR ........................................208

Component Description  ........................................208
On Board Diagnosis Logic  ....................................208
DTC Confirmation Procedure ................................209
Diagnostic Procedure ............................................210
Component Inspection  ..........................................210
Removal and Installation ....................................... 211

DTC P0128 THERMOSTAT FUNCTION .................212

On Board Diagnosis Logic ....................................212
DTC Confirmation Procedure ................................212
Diagnostic Procedure ............................................212
Component Inspection ..........................................213
Removal and Installation .......................................213

DTC P0132, P0152 HO2S1 .....................................214

Component Description ........................................214
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  ....................................214
DTC Confirmation Procedure ................................215
Wiring Diagram  .....................................................216
Diagnostic Procedure ............................................219
Component Inspection  ..........................................222
Removal and Installation .......................................223

DTC P0133, P0153 HO2S1 .....................................224

Component Description ........................................224
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  ....................................224
DTC Confirmation Procedure ................................225
Overall Function Check .........................................226
Wiring Diagram  .....................................................227
Diagnostic Procedure ............................................230
Component Inspection  ..........................................234
Removal and Installation .......................................235

DTC P0134, P0154 HO2S1 .....................................236

Component Description ........................................236
CONSULT-II Reference Value in Data Monitor Mode

EC-3

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On Board Diagnosis Logic  ................................... 236
DTC Confirmation Procedure  ............................... 237
Overall Function Check ........................................ 238
Wiring Diagram  .................................................... 239
Diagnostic Procedure  ........................................... 242
Component Inspection  ......................................... 243
Removal and Installation  ...................................... 244

DTC P0138, P0158 HO2S2 .................................... 245

Component Description ........................................ 245
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  ................................... 245
DTC Confirmation Procedure  ............................... 246
Wiring Diagram  .................................................... 247
Diagnostic Procedure  ........................................... 250
Component Inspection  ......................................... 252
Removal and Installation  ...................................... 253

DTC P0139, P0159 HO2S2 .................................... 254

Component Description ........................................ 254
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  ................................... 254
DTC Confirmation Procedure  ............................... 255
Overall Function Check ........................................ 255
Wiring Diagram  .................................................... 257
Diagnostic Procedure  ........................................... 260
Component Inspection  ......................................... 263
Removal and Installation  ...................................... 265

DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION .............................................................. 266

On Board Diagnosis Logic  ................................... 266
DTC Confirmation Procedure  ............................... 266
Wiring Diagram  .................................................... 268
Diagnostic Procedure  ........................................... 270

DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION .............................................................. 275

On Board Diagnosis Logic  ................................... 275
DTC Confirmation Procedure  ............................... 275
Wiring Diagram  .................................................... 277
Diagnostic Procedure  ........................................... 279

DTC P0181 FTT SENSOR ...................................... 283

Component Description ........................................ 283
On Board Diagnosis Logic  ................................... 283
DTC Confirmation Procedure  ............................... 283
Wiring Diagram  .................................................... 285
Diagnostic Procedure  ........................................... 286
Component Inspection  ......................................... 287
Removal and Installation  ...................................... 287

DTC P0182, P0183 FTT SENSOR ......................... 288

Component Description ........................................ 288
On Board Diagnosis Logic  ................................... 288
DTC Confirmation Procedure  ............................... 288
Wiring Diagram  .................................................... 289
Diagnostic Procedure  ........................................... 290
Component Inspection  ......................................... 291
Removal and Installation  ...................................... 291

DTC P0222, P0223 TP SENSOR ........................... 292

Component Description ........................................ 292
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic .................................... 292
DTC Confirmation Procedure  ............................... 293
Wiring Diagram ..................................................... 294
Diagnostic Procedure  ........................................... 295
Component Inspection .......................................... 297
Removal and Installation  ...................................... 297

DTC P0300 - P0308 NO. 8 - 1 CYLINDER MISFIRE,
MULTIPLE CYLINDER MISFIRE ............................ 298

On Board Diagnosis Logic .................................... 298
DTC Confirmation Procedure ............................... 299
Diagnostic Procedure ........................................... 299

DTC P0327, P0328, P0332, P0333 KS ................... 304

Component Description  ........................................ 304
On Board Diagnosis Logic .................................... 304
DTC Confirmation Procedure  ............................... 304
Wiring Diagram ..................................................... 305
Diagnostic Procedure  ........................................... 306
Component Inspection .......................................... 307
Removal and Installation  ...................................... 308

DTC P0335 CKP SENSOR (POS) .......................... 309

Component Description ........................................ 309
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic .................................... 309
DTC Confirmation Procedure  ............................... 309
Wiring Diagram ..................................................... 310
Diagnostic Procedure  ........................................... 313
Component Inspection .......................................... 316
Removal and Installation  ...................................... 316

DTC P0340 CMP SENSOR (PHASE) ..................... 317

Component Description  ........................................ 317
On Board Diagnosis Logic .................................... 317
DTC Confirmation Procedure  ............................... 317
Wiring Diagram ..................................................... 318
Diagnostic Procedure  ........................................... 319
Component Inspection .......................................... 321
Removal and Installation  ...................................... 321

DTC P0420, P0430 THREE WAY CATALYST FUNC-
TION ........................................................................ 322

On Board Diagnosis Logic .................................... 322
DTC Confirmation Procedure  ............................... 322
Overall Function Check  ........................................ 323
Diagnostic Procedure  ........................................... 324

DTC P0441 EVAP CONTROL SYSTEM ................. 327

System Description ............................................... 327
On Board Diagnosis Logic .................................... 327
DTC Confirmation Procedure  ............................... 327
Overall Function Check  ........................................ 328
Diagnostic Procedure  ........................................... 329

DTC P0442 EVAP CONTROL SYSTEM ................. 333

On Board Diagnosis Logic .................................... 333
DTC Confirmation Procedure ............................... 334
Diagnostic Procedure ........................................... 335
Component Inspection .......................................... 341

DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ...................... 342

Description ............................................................ 342
CONSULT-II Reference Value in Data Monitor Mode

EC-4

On Board Diagnosis Logic  .................................... 343
DTC Confirmation Procedure  ............................... 343
Wiring Diagram  ..................................................... 344
Diagnostic Procedure  ........................................... 345
Component Inspection .......................................... 347
Removal and Installation  ...................................... 347

DTC P0447 EVAP CANISTER VENT CONTROL
VALVE ..................................................................... 348

Component Description ........................................ 348
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  .................................... 348
DTC Confirmation Procedure  ............................... 349
Wiring Diagram  ..................................................... 350
Diagnostic Procedure  ........................................... 351
Component Inspection .......................................... 353

DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR .................................................................. 355

Component Description ........................................ 355
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  .................................... 355
DTC Confirmation Procedure  ............................... 356
Wiring Diagram  ..................................................... 357
Diagnostic Procedure  ........................................... 358
Component Inspection .......................................... 361

DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR .................................................................. 362

Component Description ........................................ 362
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  .................................... 362
DTC Confirmation Procedure  ............................... 363
Wiring Diagram  ..................................................... 364
Diagnostic Procedure  ........................................... 365
Component Inspection .......................................... 369

DTC P0455 EVAP CONTROL SYSTEM ................. 370

On Board Diagnosis Logic  .................................... 370
DTC Confirmation Procedure  ............................... 371
Diagnostic Procedure  ........................................... 372

DTC P0456 EVAP CONTROL SYSTEM ................. 378

On Board Diagnosis Logic  .................................... 378
DTC Confirmation Procedure  ............................... 379
Overall Function Check  ........................................ 380
Diagnostic Procedure  ........................................... 381
Component Inspection .......................................... 386

DTC P0460 FUEL LEVEL SENSOR ....................... 387

Component Description  ........................................ 387
On Board Diagnosis Logic  .................................... 387
DTC Confirmation Procedure  ............................... 387
Wiring Diagram  ..................................................... 388
Diagnostic Procedure  ........................................... 389
Removal and Installation  ...................................... 391

DTC P0461 FUEL LEVEL SENSOR ....................... 392

Component Description  ........................................ 392
On Board Diagnosis Logic  .................................... 392
Overall Function Check  ........................................ 392

DTC P0462, P0463 FUEL LEVEL SENSOR .......... 394

Component Description  ........................................394
On Board Diagnosis Logic  ....................................394
DTC Confirmation Procedure ................................394
Wiring Diagram  .....................................................395
Diagnostic Procedure ............................................396
Removal and Installation .......................................398

DTC P0500 VSS ......................................................399

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

DTC P0506 ISC SYSTEM .......................................401

Description ............................................................401
On Board Diagnosis Logic ....................................401
DTC Confirmation Procedure ................................401
Diagnostic Procedure ............................................402

DTC P0507 ISC SYSTEM .......................................403

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

DTC P0550 PSP SENSOR ......................................405

Component Description ........................................405
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  ....................................405
DTC Confirmation Procedure ................................405
Wiring Diagram  .....................................................406
Diagnostic Procedure ............................................407
Component Inspection  ..........................................409
Removal and Installation .......................................409

DTC P0605 ECM .....................................................410

Component Description ........................................410
On Board Diagnosis Logic ....................................410
DTC Confirmation Procedure ................................410
Diagnostic Procedure ............................................ 411

DTC P0650 MIL .......................................................413

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

DTC P1065 ECM POWER SUPPLY ........................418

Component Description  ........................................418
On Board Diagnosis Logic  ....................................418
DTC Confirmation Procedure ................................418
Wiring Diagram  .....................................................419
Diagnostic Procedure ............................................420

DTC P1102 MAF SENSOR .....................................422

Component Description ........................................422
CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic  ....................................422
DTC Confirmation Procedure ................................423
Wiring Diagram  .....................................................424
Diagnostic Procedure ............................................425
Component Inspection  ..........................................427
Removal and Installation .......................................427

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