Infiniti G37 Coupe. Manual - part 455

 

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Infiniti G37 Coupe. Manual - part 455

 

 

EC-1

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SECTION 

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CONTENTS

ENGINE CONTROL SYSTEM

VQ37VHR

BASIC INSPECTION  ....................................

9

DIAGNOSIS AND REPAIR WORKFLOW  ..........

9

Work Flow  .................................................................

9

Diagnostic Work Sheet ............................................

12

INSPECTION AND ADJUSTMENT ....................

13

BASIC INSPECTION  .................................................

13

BASIC INSPECTION : Special Repair Require-
ment ........................................................................

13

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT (ECM) .............................................

16

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT (ECM) : Description  .....................

16

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT (ECM) : Special Repair Require-
ment ........................................................................

16

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT (VVEL CONTROL MODULE)  ........

17

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT (VVEL CONTROL MODULE) : 
Description ..............................................................

17

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT (VVEL CONTROL MODULE) : 
Special Repair Requirement  ...................................

17

IDLE SPEED  ..............................................................

17

IDLE SPEED : Description  ......................................

17

IDLE SPEED : Special Repair Requirement  ...........

17

IGNITION TIMING ......................................................

17

IGNITION TIMING : Description ..............................

17

IGNITION TIMING : Special Repair Requirement 

....

17

VIN REGISTRATION  .................................................

18

VIN REGISTRATION : Description  .........................

18

VIN REGISTRATION : Special Repair Require-
ment ........................................................................

18

ACCELERATOR PEDAL RELEASED POSITION 
LEARNING .................................................................

18

ACCELERATOR PEDAL RELEASED POSITION 
LEARNING : Description  .........................................

18

ACCELERATOR PEDAL RELEASED POSITION 
LEARNING : Special Repair Requirement  ..............

18

THROTTLE VALVE CLOSED POSITION LEARN-
ING .............................................................................

18

THROTTLE VALVE CLOSED POSITION 
LEARNING : Description  .........................................

18

THROTTLE VALVE CLOSED POSITION 
LEARNING : Special Repair Requirement  ..............

18

IDLE AIR VOLUME LEARNING  ................................

19

IDLE AIR VOLUME LEARNING : Description  .........

19

IDLE AIR VOLUME LEARNING : Special Repair 
Requirement ............................................................

19

VVEL CONTROL SHAFT POSITION SENSOR AD-
JUSTMENT ................................................................

20

VVEL CONTROL SHAFT POSITION SENSOR 
ADJUSTMENT : Description  ...................................

21

VVEL CONTROL SHAFT POSITION SENSOR 
ADJUSTMENT : Special Repair Requirement  ........

21

MIXTURE RATIO SELF-LEARNING VALUE 
CLEAR .......................................................................

22

MIXTURE RATIO SELF-LEARNING VALUE 
CLEAR : Description ................................................

22

MIXTURE RATIO SELF-LEARNING VALUE 
CLEAR : Special Repair Requirement .....................

22

FUNCTION DIAGNOSIS ..............................

24

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

24

System Diagram .....................................................

24

System Description ..................................................

25

Component Parts Location  ......................................

25

Component Description  ...........................................

32

MULTIPORT FUEL INJECTION SYSTEM  .......

34

EC-2

System Diagram ....................................................

34

System Description .................................................

34

Component Parts Location  .....................................

37

Component Description  ..........................................

43

ELECTRIC IGNITION SYSTEM .........................

45

System Diagram ....................................................

45

System Description .................................................

45

Component Parts Location  .....................................

46

Component Description  ..........................................

52

AIR CONDITIONING CUT CONTROL  ..............

54

System Diagram  .....................................................

54

System Description .................................................

54

Component Parts Location  .....................................

55

Component Description  ..........................................

61

AUTOMATIC SPEED CONTROL DEVICE 
(ASCD) ...............................................................

62

System Diagram  .....................................................

62

System Description .................................................

62

Component Parts Location  .....................................

64

Component Description .........................................

70

CAN COMMUNICATION  ...................................

71

System Description .................................................

71

COOLING FAN CONTROL  ...............................

72

System Diagram  .....................................................

72

System Description .................................................

72

Component Parts Location  .....................................

73

Component Description  ..........................................

79

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

80

System Diagram  .....................................................

80

System Description .................................................

81

Component Parts Location  .....................................

83

Component Description .........................................

89

INTAKE VALVE TIMING CONTROL .................

91

System Diagram  .....................................................

91

System Description .................................................

91

Component Parts Location  .....................................

92

Component Description  ..........................................

98

VVEL SYSTEM  ..................................................

99

System Diagram ....................................................

99

System Description .................................................

99

Component Parts Location  ....................................

100

Component Description  .........................................

106

ON BOARD DIAGNOSTIC (OBD) SYSTEM  ...

107

Diagnosis Description  ............................................

107

CONSULT-III Function  ..........................................

120

Diagnosis Tool Function ......................................

129

COMPONENT DIAGNOSIS  .......................

132

TROUBLE DIAGNOSIS - SPECIFICATION 
VALUE .............................................................

132

Description .............................................................

132

Component Function Check  .................................

132

Diagnosis Procedure .............................................

133

POWER SUPPLY AND GROUND CIRCUIT  ....

140

Diagnosis Procedure .............................................

140

U0113, U1003 CAN COMM CIRCUIT  ..............

144

Description ............................................................

144

DTC Logic  .............................................................

144

Diagnosis Procedure .............................................

144

U1000, U1001 CAN COMM CIRCUIT  ..............

146

Description ............................................................

146

DTC Logic  .............................................................

146

Diagnosis Procedure .............................................

146

U1010 CONTROL UNIT (CAN)  ........................

147

Description ............................................................

147

DTC Logic  .............................................................

147

Diagnosis Procedure .............................................

147

U1011 CONTROL UNIT (CAN)  ........................

148

Description ............................................................

148

DTC Logic  .............................................................

148

Diagnosis Procedure .............................................

148

U1024 CAN COMM CIRCUIT  ...........................

149

Description ............................................................

149

DTC Logic  .............................................................

149

Diagnosis Procedure .............................................

149

P0011, P0021 IVT CONTROL  ..........................

151

DTC Logic  .............................................................

151

Diagnosis Procedure .............................................

152

Component Inspection  ..........................................

153

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

155

Description ............................................................

155

DTC Logic  .............................................................

155

Diagnosis Procedure .............................................

156

Component Inspection  ..........................................

157

P0037, P0038, P0057, P0058 HO2S2 HEAT-
ER .....................................................................

158

Description ............................................................

158

DTC Logic  .............................................................

158

Diagnosis Procedure .............................................

159

Component Inspection  ..........................................

160

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

162

Description ............................................................

162

DTC Logic  .............................................................

162

Diagnosis Procedure .............................................

162

Component Inspection  ..........................................

163

P0101, P010B MAF SENSOR ..........................

165

Description ............................................................

165

DTC Logic  .............................................................

165

Component Function Check  .................................

167

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Diagnosis Procedure .............................................

167

Component Inspection  ..........................................

169

P0102, P0103, P010C, P010D MAF SENSOR 

..

172

Description ............................................................

172

DTC Logic  .............................................................

172

Diagnosis Procedure .............................................

173

Component Inspection  ..........................................

174

P010A MANIFOLD ABSOLUTE PRESSURE 
SENSOR ...........................................................

177

Description ............................................................

177

DTC Logic  .............................................................

177

Diagnosis Procedure .............................................

177

Component Inspection  ..........................................

178

P0112, P0113 IAT SENSOR  ............................

181

Description ............................................................

181

DTC Logic  .............................................................

181

Diagnosis Procedure .............................................

182

Component Inspection  ..........................................

182

P0117, P0118 ECT SENSOR  ...........................

184

Description ............................................................

184

DTC Logic  .............................................................

184

Diagnosis Procedure .............................................

185

Component Inspection  ..........................................

186

P0122, P0123, P0227, P0228 TP SENSOR .....

187

Description ............................................................

187

DTC Logic  .............................................................

187

Diagnosis Procedure .............................................

188

Component Inspection  ..........................................

189

Special Repair Requirement  .................................

189

P0125 ECT SENSOR  .......................................

190

Description ............................................................

190

DTC Logic  .............................................................

190

Diagnosis Procedure .............................................

191

Component Inspection  ..........................................

191

P0127 IAT SENSOR .........................................

193

Description ............................................................

193

DTC Logic  .............................................................

193

Diagnosis Procedure .............................................

194

Component Inspection  ..........................................

194

P0128 THERMOSTAT FUNCTION  ..................

195

DTC Logic  .............................................................

195

Diagnosis Procedure .............................................

195

Component Inspection  ..........................................

196

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

197

Description ............................................................

197

DTC Logic  .............................................................

197

Component Function Check ..................................

199

Diagnosis Procedure .............................................

199

P0131, P0151 A/F SENSOR 1  .........................

201

Description ............................................................

201

DTC Logic  .............................................................

201

Diagnosis Procedure  .............................................

202

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

204

Description .............................................................

204

DTC Logic ..............................................................

204

Diagnosis Procedure  .............................................

205

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

207

Description .............................................................

207

DTC Logic ..............................................................

207

Diagnosis Procedure  .............................................

209

P0137, P0157 HO2S2  .....................................

212

Description .............................................................

212

DTC Logic ..............................................................

212

Component Function Check  ..................................

213

Diagnosis Procedure  .............................................

214

Component Inspection ...........................................

215

P0138, P0158 HO2S2  .....................................

218

Description .............................................................

218

DTC Logic ..............................................................

218

Component Function Check  ..................................

220

Diagnosis Procedure  .............................................

221

Component Inspection ...........................................

223

P0139, P0159 HO2S2  .....................................

226

Description .............................................................

226

DTC Logic ..............................................................

226

Component Function Check  ..................................

227

Diagnosis Procedure  .............................................

228

Component Inspection ...........................................

229

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

232

DTC Logic ..............................................................

232

Diagnosis Procedure  .............................................

233

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

236

DTC Logic ..............................................................

236

Diagnosis Procedure  .............................................

237

P0181 FTT SENSOR .......................................

240

Description .............................................................

240

DTC Logic ..............................................................

240

Diagnosis Procedure  .............................................

241

Component Inspection ...........................................

242

P0182, P0183 FTT SENSOR  ..........................

243

Description .............................................................

243

DTC Logic ..............................................................

243

Diagnosis Procedure  .............................................

243

Component Inspection ...........................................

245

P0196 EOT SENSOR ......................................

246

Description .............................................................

246

DTC Logic ..............................................................

246

Diagnosis Procedure  .............................................

247

Component Inspection ...........................................

248

EC-4

P0197, P0198 EOT SENSOR  ..........................

249

Description .............................................................

249

DTC Logic ..............................................................

249

Diagnosis Procedure  .............................................

250

Component Inspection ...........................................

250

P0222, P0223, P2132, P2133 TP SENSOR  ....

252

Description .............................................................

252

DTC Logic ..............................................................

252

Diagnosis Procedure  .............................................

253

Component Inspection ...........................................

254

Special Repair Requirement ..................................

254

P0300, P0301, P0302, P0303, P0304, P0305, 
P0306 MISFIRE  ...............................................

255

DTC Logic ..............................................................

255

Diagnosis Procedure  .............................................

256

P0327, P0328, P0332, P0333 KS  ....................

261

Description .............................................................

261

DTC Logic ..............................................................

261

Diagnosis Procedure  .............................................

261

Component Inspection ...........................................

262

P0335 CKP SENSOR (POS)  ...........................

264

Description .............................................................

264

DTC Logic ..............................................................

264

Diagnosis Procedure  .............................................

265

Component Inspection ...........................................

267

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

268

Description .............................................................

268

DTC Logic ..............................................................

268

Diagnosis Procedure  .............................................

269

Component Inspection ...........................................

271

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

272

DTC Logic ..............................................................

272

Component Function Check  ..................................

273

Diagnosis Procedure  .............................................

274

P0441 EVAP CONTROL SYSTEM ..................

277

DTC Logic ..............................................................

277

Component Function Check  ..................................

278

Diagnosis Procedure  .............................................

279

P0442 EVAP CONTROL SYSTEM ..................

282

DTC Logic ..............................................................

282

Diagnosis Procedure  .............................................

283

Component Inspection ...........................................

287

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

288

Description .............................................................

288

DTC Logic ..............................................................

288

Diagnosis Procedure  .............................................

289

Component Inspection ...........................................

291

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

293

Description ............................................................

293

DTC Logic  .............................................................

293

Diagnosis Procedure .............................................

293

Component Inspection  ..........................................

295

P0447 EVAP CANISTER VENT CONTROL 
VALVE ..............................................................

296

Description ............................................................

296

DTC Logic  .............................................................

296

Diagnosis Procedure .............................................

296

Component Inspection  ..........................................

298

P0448 EVAP CANISTER VENT CONTROL 
VALVE ..............................................................

300

Description ............................................................

300

DTC Logic  .............................................................

300

Diagnosis Procedure .............................................

301

Component Inspection  ..........................................

302

P0451 EVAP CONTROL SYSTEM PRES-
SURE SENSOR  ................................................

304

Description ............................................................

304

DTC Logic  .............................................................

304

Diagnosis Procedure .............................................

304

Component Inspection  ..........................................

306

P0452 EVAP CONTROL SYSTEM PRES-
SURE SENSOR  ................................................

307

Description ............................................................

307

DTC Logic  .............................................................

307

Diagnosis Procedure .............................................

308

Component Inspection  ..........................................

310

P0453 EVAP CONTROL SYSTEM PRES-
SURE SENSOR  ................................................

312

Description ............................................................

312

DTC Logic  .............................................................

312

Diagnosis Procedure .............................................

313

Component Inspection  ..........................................

316

P0455 EVAP CONTROL SYSTEM  ..................

318

DTC Logic  .............................................................

318

Diagnosis Procedure .............................................

320

Component Inspection  ..........................................

322

P0456 EVAP CONTROL SYSTEM  ..................

324

DTC Logic  .............................................................

324

Component Function Check  .................................

326

Diagnosis Procedure .............................................

326

Component Inspection  ..........................................

330

P0460 FUEL LEVEL SENSOR .........................

331

Description ............................................................

331

DTC Logic  .............................................................

331

Diagnosis Procedure .............................................

331

P0461 FUEL LEVEL SENSOR .........................

333

Description ............................................................

333

DTC Logic  .............................................................

333

Component Function Check  .................................

333

Diagnosis Procedure .............................................

334

 

 

 

 

 

 

 

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