Infiniti I35 (A33). Manual — part 165

ENGINE CONTROL SYSTEM

SECTION

EC

CONTENTS

TROUBLE DIAGNOSIS - INDEX . . . . . . . . . 9

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

PRECAUTIONS . . . . . . . . . . . . . . . .18

Precautions for Supplemental Restraint System
(SRS)

″

AIR BAG

″

and

″

SEAT BELT

PRE-TENSIONER

″

. . . . . . . . . . . . . 18

Precautions for On Board Diagnostic (OBD)
System of Engine and A/T. . . . . . . . . . .18
Engine Fuel & Emission Control System . . . . ..19
Precautions . . . . . . . . . . . . . . . . 20
Wiring Diagrams and Trouble Diagnosis. . . . ...21

PREPARATION . . . . . . . . . . . . . . . .22

Special Service Tools . . . . . . . . . . . . 22
Commercial Service Tools . . . . . . . . . . .22

ENGINE AND EMISSION CONTROL OVERALL
SYSTEM. . . . . . . . . . . . . . . . . . .24

Engine Control Component Parts Location. . . ...24
Circuit Diagram . . . . . . . . . . . . . . ..28
System Diagram . . . . . . . . . . . . . . 30
Vacuum Hose Drawing . . . . . . . . . . . ..31
System Chart . . . . . . . . . . . . . . . .32

ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION . . . . . . . . . . . ...33

Multiport Fuel Injection (MFI) System . . . . . ...33
Electronic Ignition (EI) System . . . . . . . . ..35
Air Conditioning Cut Control. . . . . . . . . ..36
Fuel Cut Control (at no load & high engine
speed) . . . . . . . . . . . . . . . . . . 37
Evaporative Emission System . . . . . . . . ...37
On Board Refueling Vapor Recovery (ORVR) . . ..43
Positive Crankcase Ventilation . . . . . . . . ..52
CAN Communication . . . . . . . . . . . . .53
Automatic Speed Control Device (ASCD) System. 54

BASIC SERVICE PROCEDURE . . . . . . . . ...55

Fuel Pressure Release . . . . . . . . . . . ..55
Fuel Pressure Check . . . . . . . . . . . . .55
Injector . . . . . . . . . . . . . . . . . ...56
How to Check Idle Speed and Ignition Timing. . ..57

Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment . . . . . . . . . . . . . . . . .58
Accelerator Pedal Released Position Learning. . .70
Throttle Valve Closed Position Learning . . . . ...70
Idle Air Volume Learning . . . . . . . . . . ...70

ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION . . . . . . . . . . . . . . . ...74

Introduction . . . . . . . . . . . . . . . . 74
Two Trip Detection Logic . . . . . . . . . . ...74
Emission-related Diagnostic Information . . . . ...75
Malfunction Indicator Lamp (MIL). . . . . . . ..90
OBD System Operation Chart . . . . . . . . ...94
CONSULT-II . . . . . . . . . . . . . . . ...99
Generic Scan Tool (GST) . . . . . . . . . . 114

TROUBLE DIAGNOSIS - INTRODUCTION. . . . 116

Introduction . . . . . . . . . . . . . . . .. 116
Work Flow. . . . . . . . . . . . . . . . 118

TROUBLE DIAGNOSIS - BASIC INSPECTION . . .120

Basic Inspection. . . . . . . . . . . . . ...120

TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION . . . . . . . . . . . . . . . .125

DTC Inspection Priority Chart. . . . . . . . ..125
Fail-safe Chart . . . . . . . . . . . . . . .126
Symptom Matrix Chart. . . . . . . . . . . .127
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 131
Major Sensor Reference Graph in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 134
ECM Terminals and Reference Value . . . . . .137

TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..148

Description . . . . . . . . . . . . . . . ...148
Testing Condition . . . . . . . . . . . . . .148
Inspection Procedure. . . . . . . . . . . ...148
Diagnostic Procedure . . . . . . . . . . . ..149

TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT. . . . . . . . . . . . . . . . . .152

Description . . . . . . . . . . . . . . . ...152
Diagnostic Procedure . . . . . . . . . . . ..152

POWER SUPPLY AND GROUND CIRCUIT . . . ..153

GI

MA

EM

LC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

Wiring Diagram . . . . . . . . . . . . . . 153
Diagnostic Procedure . . . . . . . . . . . ..155
Ground Inspection . . . . . . . . . . . . ...160

DTC U1000, U1001 CAN COMMUNICATION LINE...162

Description . . . . . . . . . . . . . . . ...162
On Board Diagnosis Logic. . . . . . . . . ...162
DTC Confirmation Procedure . . . . . . . . ..162
Wiring Diagram . . . . . . . . . . . . . . 163
Diagnostic Procedure . . . . . . . . . . . ..164

DTC P0011, P0021 IVT CONTROL . . . . . . . 165

Description . . . . . . . . . . . . . . . ...165
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 166
On Board Diagnosis Logic. . . . . . . . . ...166
DTC Confirmation Procedure . . . . . . . . ..166
Wiring Diagram . . . . . . . . . . . . . . 168
Diagnostic Procedure . . . . . . . . . . . ..171
Component Inspection. . . . . . . . . . . .173

DTC P0031, P0032, P0051, P0052 HO2S1
HEATER. . . . . . . . . . . . . . . . . ...174

Description . . . . . . . . . . . . . . . ...174
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 174
On Board Diagnosis Logic. . . . . . . . . ...174
DTC Confirmation Procedure . . . . . . . . ..175
Wiring Diagram . . . . . . . . . . . . . . 176
Diagnostic Procedure . . . . . . . . . . . ..178

DTC P0037, P0038, P0057, P0058 HO2S2
HEATER. . . . . . . . . . . . . . . . . ...181

Description . . . . . . . . . . . . . . . ...181
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 181
On Board Diagnosis Logic. . . . . . . . . ...181
DTC Confirmation Procedure . . . . . . . . ..182
Wiring Diagram . . . . . . . . . . . . . . 183
Diagnostic Procedure . . . . . . . . . . . ..185

DTC P0101 MAF SENSOR . . . . . . . . . . .187

Component Description . . . . . . . . . . ...187
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 187
On Board Diagnosis Logic. . . . . . . . . ...187
DTC Confirmation Procedure . . . . . . . . ..187
Overall Function Check . . . . . . . . . . ...189
Wiring Diagram . . . . . . . . . . . . . . 190
Diagnostic Procedure . . . . . . . . . . . ..191

DTC P0102, P0103 MAF SENSOR. . . . . . . .194

Component Description . . . . . . . . . . ...194
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 194
On Board Diagnosis Logic. . . . . . . . . ...194
DTC Confirmation Procedure . . . . . . . . ..195
Wiring Diagram . . . . . . . . . . . . . . 196

Diagnostic Procedure . . . . . . . . . . . ..197

DTC P0107, P0108 ABSOLUTE PRESSURE
SENSOR . . . . . . . . . . . . . . . . . ..200

Component Description . . . . . . . . . . ...200
On Board Diagnosis Logic. . . . . . . . . ...200
DTC Confirmation Procedure . . . . . . . . ..200
Diagnostic Procedure . . . . . . . . . . . ..201

DTC P0112, P0113 IAT SENSOR . . . . . . . ...202

Component Description . . . . . . . . . . ...202
On Board Diagnosis Logic. . . . . . . . . ...202
DTC Confirmation Procedure . . . . . . . . ..202
Wiring Diagram . . . . . . . . . . . . . . 203
Diagnostic Procedure . . . . . . . . . . . ..204

DTC P0117, P0118 ECT SENSOR. . . . . . . ..206

Component Description . . . . . . . . . . ...206
On Board Diagnosis Logic. . . . . . . . . ...206
DTC Confirmation Procedure . . . . . . . . ..207
Wiring Diagram . . . . . . . . . . . . . . 208
Diagnostic Procedure . . . . . . . . . . . ..209

DTC P0122, P0123 TP SENSOR. . . . . . . . 212

Component Description . . . . . . . . . . ...212
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 212
On Board Diagnosis Logic. . . . . . . . . ...212
DTC Confirmation Procedure . . . . . . . . ..213
Wiring Diagram . . . . . . . . . . . . . . 214
Diagnostic Procedure . . . . . . . . . . . ..215
Component Inspection. . . . . . . . . . . .217

DTC P0125 ECT SENSOR. . . . . . . . . . ..218

Description . . . . . . . . . . . . . . . ...218
On Board Diagnosis Logic. . . . . . . . . ...218
DTC Confirmation Procedure . . . . . . . . ..219
Diagnostic Procedure . . . . . . . . . . . ..219

DTC P0127 IAT SENSOR . . . . . . . . . . ...221

Component Description . . . . . . . . . . ...221
On Board Diagnosis Logic. . . . . . . . . ...221
DTC Confirmation Procedure . . . . . . . . ..221
Diagnostic Procedure . . . . . . . . . . . ..222

DTC P0128 THERMOSTAT FUNCTION. . . . . .224

On Board Diagnosis Logic. . . . . . . . . ...224
DTC Confirmation Procedure . . . . . . . . ..224
Diagnostic Procedure . . . . . . . . . . . ..225

DTC P0132, P0152 HO2S1 . . . . . . . . . . .226

Component Description . . . . . . . . . . ...226
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 226
On Board Diagnosis Logic. . . . . . . . . ...226
DTC Confirmation Procedure . . . . . . . . ..227
Wiring Diagram . . . . . . . . . . . . . . 228
Diagnostic Procedure . . . . . . . . . . . ..230

DTC P0133, P0153 HO2S1 . . . . . . . . . . .235

Component Description . . . . . . . . . . ...235

CONTENTS

(Cont’d)

EC-2

CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 235
On Board Diagnosis Logic. . . . . . . . . ...235
DTC Confirmation Procedure . . . . . . . . ..236
Overall Function Check . . . . . . . . . . ...237
Wiring Diagram . . . . . . . . . . . . . . 238
Diagnostic Procedure . . . . . . . . . . . ..240

DTC P0134, P0154 HO2S1 . . . . . . . . . . .247

Component Description . . . . . . . . . . ...247
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 247
On Board Diagnosis Logic. . . . . . . . . ...247
DTC Confirmation Procedure . . . . . . . . ..248
Overall Function Check . . . . . . . . . . ...249
Wiring Diagram . . . . . . . . . . . . . . 250
Diagnostic Procedure . . . . . . . . . . . ..252

DTC P0138, P0158 HO2S2 . . . . . . . . . . .256

Component Description . . . . . . . . . . ...256
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 256
On Board Diagnosis Logic. . . . . . . . . ...256
DTC Confirmation Procedure . . . . . . . . ..257
Wiring Diagram . . . . . . . . . . . . . . 258
Diagnostic Procedure . . . . . . . . . . . ..260

DTC P0139, P0159 HO2S2 . . . . . . . . . . .264

Component Description . . . . . . . . . . ...264
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 264
On Board Diagnosis Logic. . . . . . . . . ...264
DTC Confirmation Procedure . . . . . . . . ..265
Overall Function Check . . . . . . . . . . ...265
Wiring Diagram . . . . . . . . . . . . . . 267
Diagnostic Procedure . . . . . . . . . . . ..269

DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . . . . ...273

On Board Diagnosis Logic. . . . . . . . . ...273
DTC Confirmation Procedure . . . . . . . . ..273
Wiring Diagram . . . . . . . . . . . . . . 275
Diagnostic Procedure . . . . . . . . . . . ..277

DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . . . . ...281

On Board Diagnosis Logic. . . . . . . . . ...281
DTC Confirmation Procedure . . . . . . . . ..281
Wiring Diagram . . . . . . . . . . . . . . 283
Diagnostic Procedure . . . . . . . . . . . ..285

DTC P0181 FTT SENSOR . . . . . . . . . . ..288

Component Description . . . . . . . . . . ...288
On Board Diagnosis Logic. . . . . . . . . ...288
DTC Confirmation Procedure . . . . . . . . ..288
Diagnostic Procedure . . . . . . . . . . . ..289

DTC P0182, P0183 FTT SENSOR. . . . . . . ..291

Component Description . . . . . . . . . . ...291

On Board Diagnosis Logic. . . . . . . . . ...291
DTC Confirmation Procedure . . . . . . . . ..291
Wiring Diagram . . . . . . . . . . . . . . 293
Diagnostic Procedure . . . . . . . . . . . ..294

DTC P0222, P0223 TP SENSOR. . . . . . . . 296

Component Description . . . . . . . . . . ...296
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 296
On Board Diagnosis Logic. . . . . . . . . ...296
DTC Confirmation Procedure . . . . . . . . ..297
Wiring Diagram . . . . . . . . . . . . . . 298
Diagnostic Procedure . . . . . . . . . . . ..299
Component Inspection. . . . . . . . . . . .301

DTC P0300 - P0306 MULTIPLE CYLINDER
MISFIRE, NO. 1 - 6 CYLINDER MISFIRE . . . . ..302

On Board Diagnosis Logic. . . . . . . . . ...302
DTC Confirmation Procedure . . . . . . . . ..303
Diagnostic Procedure . . . . . . . . . . . ..304

DTC P0327, P0328 KS. . . . . . . . . . . . 311

Component Description . . . . . . . . . . ... 311
On Board Diagnosis Logic. . . . . . . . . ... 311
DTC Confirmation Procedure . . . . . . . . .. 311
Wiring Diagram . . . . . . . . . . . . . . 312
Diagnostic Procedure . . . . . . . . . . . ..313

DTC P0335 CKP SENSOR (POS) . . . . . . . ..316

Component Description . . . . . . . . . . ...316
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 316
On Board Diagnosis Logic. . . . . . . . . ...316
DTC Confirmation Procedure . . . . . . . . ..317
Wiring Diagram . . . . . . . . . . . . . . 318
Diagnostic Procedure . . . . . . . . . . . ..319
Component Inspection. . . . . . . . . . . .322

DTC P0340, P0345 CMP SENSOR (PHASE) . . . 323

Component Description . . . . . . . . . . ...323
On Board Diagnosis Logic. . . . . . . . . ...323
DTC Confirmation Procedure . . . . . . . . ..323
Wiring Diagram . . . . . . . . . . . . . . 325
Diagnostic Procedure . . . . . . . . . . . ..327
Component Inspection. . . . . . . . . . . .331

DTC P0420, P0430 THREE WAY CATALYST
FUNCTION . . . . . . . . . . . . . . . . ...332

On Board Diagnosis Logic. . . . . . . . . ...332
DTC Confirmation Procedure . . . . . . . . ..332
Overall Function Check . . . . . . . . . . ...333
Diagnostic Procedure . . . . . . . . . . . ..334

DTC P0441 EVAP CONTROL SYSTEM . . . . . .337

System Description. . . . . . . . . . . . ..337
On Board Diagnosis Logic. . . . . . . . . ...337
DTC Confirmation Procedure . . . . . . . . ..338
Overall Function Check . . . . . . . . . . ...338
Diagnostic Procedure . . . . . . . . . . . ..340

GI

MA

EM

LC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

CONTENTS

(Cont’d)

EC-3

DTC P0442 EVAP CONTROL SYSTEM . . . . . .347

On Board Diagnosis Logic. . . . . . . . . ...347
DTC Confirmation Procedure . . . . . . . . ..348
Diagnostic Procedure . . . . . . . . . . . ..349

DTC P0444, P0445 EVAP CANISTER PURGE
VOLUME CONTROL SOLENOID VALVE . . . . ..362

Description . . . . . . . . . . . . . . . ...362
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 362
On Board Diagnosis Logic. . . . . . . . . ...363
DTC Confirmation Procedure . . . . . . . . ..363
Wiring Diagram . . . . . . . . . . . . . . 364
Diagnostic Procedure . . . . . . . . . . . ..366

DTC P0447 EVAP CANISTER VENT CONTROL
VALVE. . . . . . . . . . . . . . . . . . ..369

Component Description . . . . . . . . . . ...369
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 369
On Board Diagnosis Logic. . . . . . . . . ...369
DTC Confirmation Procedure . . . . . . . . ..369
Wiring Diagram . . . . . . . . . . . . . . 371
Diagnostic Procedure . . . . . . . . . . . ..372

DTC P0452 EVAP SYSTEM PRESSURE SENSOR ..376

Component Description . . . . . . . . . . ...376
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 376
On Board Diagnosis Logic. . . . . . . . . ...376
DTC Confirmation Procedure . . . . . . . . ..376
Wiring Diagram . . . . . . . . . . . . . . 378
Diagnostic Procedure . . . . . . . . . . . ..379

DTC P0453 EVAP SYSTEM PRESSURE SENSOR ..382

Component Description . . . . . . . . . . ...382
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 382
On Board Diagnosis Logic. . . . . . . . . ...382
DTC Confirmation Procedure . . . . . . . . ..383
Wiring Diagram . . . . . . . . . . . . . . 384
Diagnostic Procedure . . . . . . . . . . . ..385

DTC P0455 EVAP CONTROL SYSTEM (GROSS
LEAK). . . . . . . . . . . . . . . . . . ...392

On Board Diagnosis Logic. . . . . . . . . ...392
Possible Cause. . . . . . . . . . . . . . 392
DTC Confirmation Procedure . . . . . . . . ..393
Diagnostic Procedure . . . . . . . . . . . ..394

DTC P0456 EVAP CONTROL SYSTEM . . . . . .404

On Board Diagnosis Logic. . . . . . . . . ...404
DTC Confirmation Procedure . . . . . . . . ..405
Overall Function Check . . . . . . . . . . ...406
Diagnostic Procedure . . . . . . . . . . . ..406

DTC P0460 FUEL LEVEL SENSOR. . . . . . ...419

Component Description . . . . . . . . . . ...419
On Board Diagnostic Logic. . . . . . . . . ..419

DTC Confirmation Procedure . . . . . . . . ..419
Wiring Diagram . . . . . . . . . . . . . . 420
Diagnostic Procedure . . . . . . . . . . . ..421

DTC P0461 FUEL LEVEL SENSOR. . . . . . ...423

Component Description . . . . . . . . . . ...423
On Board Diagnostic Logic. . . . . . . . . ..423
Overall Function Check . . . . . . . . . . ...423

DTC P0462, P0463 FUEL LEVEL SENSOR . . . ..425

Component Description . . . . . . . . . . ...425
On Board Diagnostic Logic. . . . . . . . . ..425
DTC Confirmation Procedure . . . . . . . . ..425
Wiring Diagram . . . . . . . . . . . . . . 426
Diagnostic Procedure . . . . . . . . . . . ..427

DTC P0500 VSS . . . . . . . . . . . . . . ..429

Component Description . . . . . . . . . . ...429
On Board Diagnosis Logic. . . . . . . . . ...429
DTC Confirmation Procedure . . . . . . . . ..429
Overall Function Check . . . . . . . . . . ...430
Wiring Diagram . . . . . . . . . . . . . . 431
Diagnostic Procedure . . . . . . . . . . . ..432

DTC P0506 ISC SYSTEM . . . . . . . . . . ...433

Description . . . . . . . . . . . . . . . ...433
On Board Diagnosis Logic. . . . . . . . . ...433
DTC Confirmation Procedure . . . . . . . . ..433
Diagnostic Procedure . . . . . . . . . . . ..434

DTC P0507 ISC SYSTEM . . . . . . . . . . ...435

Description . . . . . . . . . . . . . . . ...435
On Board Diagnosis Logic. . . . . . . . . ...435
DTC Confirmation Procedure . . . . . . . . ..435
Diagnostic Procedure . . . . . . . . . . . ..436

DTC P0550 PSP SENSOR. . . . . . . . . . ..437

Component Description . . . . . . . . . . ...437
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 437
On Board Diagnosis Logic. . . . . . . . . ...437
DTC Confirmation Procedure . . . . . . . . ..437
Wiring Diagram . . . . . . . . . . . . . . 438
Diagnostic Procedure . . . . . . . . . . . ..439
Component Inspection. . . . . . . . . . . .441

DTC P0605 ECM . . . . . . . . . . . . . . .442

Component Description . . . . . . . . . . ...442
On Board Diagnosis Logic. . . . . . . . . ...442
DTC Confirmation Procedure . . . . . . . . ..442
Diagnostic Procedure . . . . . . . . . . . ..443

DTC P0650 MIL (CIRCUIT) . . . . . . . . . . .444

Component Description . . . . . . . . . . ...444
On Board Diagnosis Logic. . . . . . . . . ...444
DTC Confirmation Procedure . . . . . . . . ..444
Wiring Diagram . . . . . . . . . . . . . . 445
Diagnostic Procedure . . . . . . . . . . . ..446

DTC P1065 ECM POWER SUPPLY (BACK UP). ...448

Component Description . . . . . . . . . . ...448

CONTENTS

(Cont’d)

EC-4