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ENGINE
A
ENGINE CONTROL SYSTEM
SECTION EC EC
C
D
E
CONTENTS
VQ37VHR ACCELERATOR PEDAL RELEASED POSITION F
LEARNING ................................................................18
.
BASIC INSPECTION ................................... 9
. ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Description ........................................18 . G
DIAGNOSIS AND REPAIR WORKFLOW ......... 9
. ACCELERATOR PEDAL RELEASED POSITION
Work Flow ................................................................ 9
. LEARNING : Special Repair Requirement .............18 .
Diagnostic Work Sheet ........................................... 12.
THROTTLE VALVE CLOSED POSITION LEARN- H
INSPECTION AND ADJUSTMENT ...................13
. ING ............................................................................18
.
THROTTLE VALVE CLOSED POSITION
BASIC INSPECTION ................................................ 13 .
LEARNING : Description ........................................18 . I
BASIC INSPECTION : Special Repair Require-
THROTTLE VALVE CLOSED POSITION
ment ....................................................................... 13
.
LEARNING : Special Repair Requirement .............18 .
ADDITIONAL SERVICE WHEN REPLACING J
IDLE AIR VOLUME LEARNING ...............................19 .
CONTROL UNIT (ECM) ............................................ 16 .
IDLE AIR VOLUME LEARNING : Description ........19 .
ADDITIONAL SERVICE WHEN REPLACING
IDLE AIR VOLUME LEARNING : Special Repair
CONTROL UNIT (ECM) : Description .................... 16 .
Requirement ...........................................................19
. K
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (ECM) : Special Repair Require- VVEL CONTROL SHAFT POSITION SENSOR AD-
ment ....................................................................... 16
. JUSTMENT ...............................................................20
.
VVEL CONTROL SHAFT POSITION SENSOR L
ADDITIONAL SERVICE WHEN REPLACING
ADJUSTMENT : Description ..................................21 .
CONTROL UNIT (VVEL CONTROL MODULE) ....... 17 .
VVEL CONTROL SHAFT POSITION SENSOR
ADDITIONAL SERVICE WHEN REPLACING
ADJUSTMENT : Special Repair Requirement .......21 . M
CONTROL UNIT (VVEL CONTROL MODULE) :
Description ............................................................. 17
. MIXTURE RATIO SELF-LEARNING VALUE
ADDITIONAL SERVICE WHEN REPLACING CLEAR ......................................................................22
.
CONTROL UNIT (VVEL CONTROL MODULE) : MIXTURE RATIO SELF-LEARNING VALUE N
Special Repair Requirement .................................. 17 . CLEAR : Description ...............................................22 .
MIXTURE RATIO SELF-LEARNING VALUE
IDLE SPEED ............................................................. 17
.
CLEAR : Special Repair Requirement ....................22 . O
IDLE SPEED : Description ..................................... 17 .
IDLE SPEED : Special Repair Requirement .......... 17 . FUNCTION DIAGNOSIS ............................. 24
.
IGNITION TIMING ..................................................... 17
. ENGINE CONTROL SYSTEM .......................... 24 P
IGNITION TIMING : Description ............................. 17 . System Diagram ....................................................24
.
IGNITION TIMING : Special Repair Requirement 17 .... System Description .................................................25
.
VIN REGISTRATION ................................................ 18 . Component Parts Location .....................................25.
VIN REGISTRATION : Description ........................ 18 . Component Description ..........................................32
.
VIN REGISTRATION : Special Repair Require-
MULTIPORT FUEL INJECTION SYSTEM ....... 34
ment ....................................................................... 18
.
Revision: 2007 June EC-1 G37 Coupe
System Diagram ................................................... 34
. Component Function Check ................................ 132 .
System Description ................................................ 34
. Diagnosis Procedure ............................................ 133
.
Component Parts Location .................................... 37.
Component Description ......................................... 43
. POWER SUPPLY AND GROUND CIRCUIT ... 140
.
Diagnosis Procedure ............................................ 140
.
ELECTRIC IGNITION SYSTEM ........................ 45
.
System Diagram ................................................... 45
. U0113, U1003 CAN COMM CIRCUIT ............. 144
.
System Description ................................................ 45
. Description ........................................................... 144
.
Component Parts Location .................................... 46. DTC Logic ............................................................ 144
.
Component Description ......................................... 52
. Diagnosis Procedure ............................................ 144 .
AIR CONDITIONING CUT CONTROL ............. 54
. U1000, U1001 CAN COMM CIRCUIT ............. 146
.
System Diagram .................................................... 54
. Description ........................................................... 146
.
System Description ................................................ 54
. DTC Logic ............................................................ 146
.
Component Parts Location .................................... 55. Diagnosis Procedure ............................................ 146 .
Component Description ......................................... 61
.
U1010 CONTROL UNIT (CAN) ....................... 147
.
AUTOMATIC SPEED CONTROL DEVICE Description ........................................................... 147
.
(ASCD) .............................................................. 62
. DTC Logic ............................................................ 147
.
System Diagram .................................................... 62
. Diagnosis Procedure ............................................ 147 .
System Description ................................................ 62
. U1011 CONTROL UNIT (CAN) ....................... 148
.
Component Parts Location .................................... 64.
Description ........................................................... 148
.
Component Description ........................................ 70
.
DTC Logic ............................................................ 148
.
CAN COMMUNICATION .................................. 71
. Diagnosis Procedure ............................................ 148 .
System Description ................................................ 71
. U1024 CAN COMM CIRCUIT .......................... 149
.
COOLING FAN CONTROL .............................. 72
. Description ........................................................... 149
.
System Diagram .................................................... 72
. DTC Logic ............................................................ 149
.
System Description ................................................ 72
. Diagnosis Procedure ............................................ 149 .
Component Parts Location .................................... 73. P0011, P0021 IVT CONTROL ......................... 151
.
Component Description ......................................... 79
.
DTC Logic ............................................................ 151
.
EVAPORATIVE EMISSION SYSTEM .............. 80
. Diagnosis Procedure ............................................ 152 .
System Diagram .................................................... 80
. Component Inspection ......................................... 153 .
System Description ................................................ 81
. P0031, P0032, P0051, P0052 A/F SENSOR 1
Component Parts Location .................................... 83.
HEATER .......................................................... 155
.
Component Description ........................................ 89
.
Description ........................................................... 155
.
INTAKE VALVE TIMING CONTROL ................ 91
. DTC Logic ............................................................ 155
.
System Diagram .................................................... 91
. Diagnosis Procedure ............................................ 156 .
System Description ................................................ 91
. Component Inspection ......................................... 157 .
Component Parts Location .................................... 92.
P0037, P0038, P0057, P0058 HO2S2 HEAT-
Component Description ......................................... 98
.
ER .................................................................... 158
.
VVEL SYSTEM ................................................. 99
. Description ........................................................... 158
.
System Diagram ................................................... 99
. DTC Logic ............................................................ 158
.
System Description ................................................ 99
. Diagnosis Procedure ............................................ 159 .
Component Parts Location ...................................100 . Component Inspection ......................................... 160 .
Component Description ........................................106
.
P0075, P0081 IVT CONTROL SOLENOID
ON BOARD DIAGNOSTIC (OBD) SYSTEM .. 107
. VALVE ............................................................. 162
.
Diagnosis Description ...........................................107
. Description ........................................................... 162
.
CONSULT-III Function .........................................120
. DTC Logic ............................................................ 162
.
Diagnosis Tool Function .....................................129
. Diagnosis Procedure ............................................ 162 .
Component Inspection ......................................... 163 .
COMPONENT DIAGNOSIS ...................... 132
.
P0101, P010B MAF SENSOR ......................... 165
.
TROUBLE DIAGNOSIS - SPECIFICATION Description ........................................................... 165
.
VALUE ............................................................ 132
. DTC Logic ............................................................ 165
.
Description ............................................................132
. Component Function Check ................................ 167 .
Revision: 2007 June EC-2 G37 Coupe
Diagnosis Procedure ............................................ 167
. Diagnosis Procedure ............................................ 202
.
Component Inspection ......................................... 169
. A
P0132, P0152 A/F SENSOR 1 ........................ 204
P0102, P0103, P010C, P010D MAF SENSOR 172
.. Description ............................................................ 204
.
Description ........................................................... 172
. DTC Logic ............................................................. 204
.
DTC Logic ............................................................ 172
. Diagnosis Procedure ............................................ 205 . EC
Diagnosis Procedure ............................................ 173 .
Component Inspection ......................................... 174 . P0133, P0153 A/F SENSOR 1 ........................ 207
Description ............................................................ 207
. C
P010A MANIFOLD ABSOLUTE PRESSURE DTC Logic ............................................................. 207
.
SENSOR .......................................................... 177
. Diagnosis Procedure ............................................ 209 .
Description ........................................................... 177
. D
DTC Logic ............................................................ 177
. P0137, P0157 HO2S2 ..................................... 212
Diagnosis Procedure ............................................ 177 . Description ............................................................ 212
.
Component Inspection ......................................... 178 . DTC Logic ............................................................. 212
.
Component Function Check ................................. 213 . E
P0112, P0113 IAT SENSOR ........................... 181
. Diagnosis Procedure ............................................ 214 .
Description ........................................................... 181
. Component Inspection .......................................... 215 .
DTC Logic ............................................................ 181
. F
Diagnosis Procedure ............................................ 182 . P0138, P0158 HO2S2 ..................................... 218
Component Inspection ......................................... 182 . Description ............................................................ 218
.
DTC Logic ............................................................. 218
.
P0117, P0118 ECT SENSOR .......................... 184
. Component Function Check ................................. 220 . G
Description ........................................................... 184
. Diagnosis Procedure ............................................ 221 .
DTC Logic ............................................................ 184
. Component Inspection .......................................... 223 .
Diagnosis Procedure ............................................ 185 . H
Component Inspection ......................................... 186 . P0139, P0159 HO2S2 ..................................... 226
Description ............................................................ 226
.
P0122, P0123, P0227, P0228 TP SENSOR .... 187
. DTC Logic ............................................................. 226
.
Description ........................................................... 187
. Component Function Check ................................. 227 . I
DTC Logic ............................................................ 187
. Diagnosis Procedure ............................................ 228 .
Diagnosis Procedure ............................................ 188 . Component Inspection .......................................... 229 .
Component Inspection ......................................... 189 . J
Special Repair Requirement ................................ 189 . P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION ...................................................... 232
P0125 ECT SENSOR ...................................... 190
. DTC Logic ............................................................. 232
.
K
Description ........................................................... 190
. Diagnosis Procedure ............................................ 233 .
DTC Logic ............................................................ 190
.
Diagnosis Procedure ............................................ 191 . P0172, P0175 FUEL INJECTION SYSTEM
Component Inspection ......................................... 191 . FUNCTION ...................................................... 236 L
DTC Logic ............................................................. 236
.
P0127 IAT SENSOR ........................................ 193
. Diagnosis Procedure ............................................ 237 .
Description ........................................................... 193
.
P0181 FTT SENSOR ....................................... 240 M
DTC Logic ............................................................ 193
.
Diagnosis Procedure ............................................ 194 . Description ............................................................ 240
.
Component Inspection ......................................... 194 . DTC Logic ............................................................. 240
.
Diagnosis Procedure ............................................ 241 . N
P0128 THERMOSTAT FUNCTION ................. 195
. Component Inspection .......................................... 242 .
DTC Logic ............................................................ 195
.
Diagnosis Procedure ............................................ 195. P0182, P0183 FTT SENSOR .......................... 243
O
Component Inspection ......................................... 196 . Description ............................................................ 243
.
DTC Logic ............................................................. 243
.
P0130, P0150 A/F SENSOR 1 ........................ 197
. Diagnosis Procedure ............................................ 243 .
Description ........................................................... 197
. Component Inspection .......................................... 245 . P
DTC Logic ............................................................ 197
.
Component Function Check ................................. 199 . P0196 EOT SENSOR ...................................... 246
Diagnosis Procedure ............................................ 199 . Description ............................................................ 246
.
DTC Logic ............................................................. 246
.
P0131, P0151 A/F SENSOR 1 ........................ 201
. Diagnosis Procedure ............................................ 247 .
Description ........................................................... 201
. Component Inspection .......................................... 248 .
DTC Logic ............................................................ 201
.
Revision: 2007 June EC-3 G37 Coupe
P0197, P0198 EOT SENSOR ......................... 249
. Description ........................................................... 293
.
Description ............................................................249
. DTC Logic ............................................................ 293
.
DTC Logic .............................................................249
. Diagnosis Procedure ............................................ 293 .
Diagnosis Procedure ............................................250 . Component Inspection ......................................... 295 .
Component Inspection ..........................................250 .
P0447 EVAP CANISTER VENT CONTROL
P0222, P0223, P2132, P2133 TP SENSOR ... 252
. VALVE ............................................................. 296
.
Description ............................................................252
. Description ........................................................... 296
.
DTC Logic .............................................................252
. DTC Logic ............................................................ 296
.
Diagnosis Procedure ............................................253 . Diagnosis Procedure ............................................ 296 .
Component Inspection ..........................................254 . Component Inspection ......................................... 298 .
Special Repair Requirement .................................254 .
P0448 EVAP CANISTER VENT CONTROL
P0300, P0301, P0302, P0303, P0304, P0305, VALVE ............................................................. 300
.
P0306 MISFIRE .............................................. 255
. Description ........................................................... 300
.
DTC Logic .............................................................255
. DTC Logic ............................................................ 300
.
Diagnosis Procedure ............................................256 . Diagnosis Procedure ............................................ 301 .
Component Inspection ......................................... 302 .
P0327, P0328, P0332, P0333 KS ................... 261
.
Description ............................................................261
. P0451 EVAP CONTROL SYSTEM PRES-
DTC Logic .............................................................261
. SURE SENSOR ............................................... 304
.
Diagnosis Procedure ............................................261 . Description ........................................................... 304
.
Component Inspection ..........................................262 . DTC Logic ............................................................ 304
.
Diagnosis Procedure ............................................ 304 .
P0335 CKP SENSOR (POS) .......................... 264
. Component Inspection ......................................... 306 .
Description ............................................................264
.
DTC Logic .............................................................264
. P0452 EVAP CONTROL SYSTEM PRES-
Diagnosis Procedure ............................................265 . SURE SENSOR ............................................... 307
.
Component Inspection ..........................................267 . Description ........................................................... 307
.
DTC Logic ............................................................ 307
.
P0340, P0345 CMP SENSOR (PHASE) ......... 268
. Diagnosis Procedure ............................................ 308 .
Description ............................................................268
.
Component Inspection ......................................... 310 .
DTC Logic .............................................................268
.
Diagnosis Procedure ............................................269 . P0453 EVAP CONTROL SYSTEM PRES-
Component Inspection ..........................................271 . SURE SENSOR ............................................... 312
.
Description ........................................................... 312
.
P0420, P0430 THREE WAY CATALYST
DTC Logic ............................................................ 312
.
FUNCTION ...................................................... 272
. Diagnosis Procedure ............................................ 313 .
DTC Logic .............................................................272
. Component Inspection ......................................... 316 .
Component Function Check .................................273 .
Diagnosis Procedure ............................................274 . P0455 EVAP CONTROL SYSTEM ................. 318
.
DTC Logic ............................................................ 318
.
P0441 EVAP CONTROL SYSTEM ................. 277
. Diagnosis Procedure ............................................ 320 .
DTC Logic .............................................................277
.
Component Inspection ......................................... 322 .
Component Function Check .................................278 .
Diagnosis Procedure ............................................279 . P0456 EVAP CONTROL SYSTEM ................. 324
.
DTC Logic ............................................................ 324
.
P0442 EVAP CONTROL SYSTEM ................. 282
. Component Function Check ................................ 326 .
DTC Logic .............................................................282
. Diagnosis Procedure ............................................ 326 .
Diagnosis Procedure ............................................283 . Component Inspection ......................................... 330 .
Component Inspection ..........................................287 .
P0460 FUEL LEVEL SENSOR ........................ 331
.
P0443 EVAP CANISTER PURGE VOLUME Description ........................................................... 331
.
CONTROL SOLENOID VALVE ...................... 288
. DTC Logic ............................................................ 331
.
Description ............................................................288
. Diagnosis Procedure ............................................ 331 .
DTC Logic .............................................................288
.
Diagnosis Procedure ............................................289 . P0461 FUEL LEVEL SENSOR ........................ 333
.
Component Inspection ..........................................291 . Description ........................................................... 333
.
DTC Logic ............................................................ 333
.
P0444, P0445 EVAP CANISTER PURGE Component Function Check ................................ 333 .
VOLUME CONTROL SOLENOID VALVE ..... 293
. Diagnosis Procedure ............................................ 334 .
Revision: 2007 June EC-4 G37 Coupe
P0462, P0463 FUEL LEVEL SENSOR ........... 335
. Diagnosis Procedure ............................................ 365 .
Description ........................................................... 335
. Component Inspection (VVEL ACTUATOR MO- A
DTC Logic ............................................................ 335
. TOR) ..................................................................... 367
.
Diagnosis Procedure ............................................ 335 . Component Inspection (VVEL ACTUATOR SUB
ASSEMBLY) ......................................................... 368 . EC
P0500 VSS ...................................................... 337
. Special Repair Requirement ................................. 368 .
Description ........................................................... 337
.
DTC Logic ............................................................ 337
. P1087, P1088 VVEL SYSTEM ........................ 369
Component Function Check ................................. 338 . DTC Logic ............................................................. 369
. C
Diagnosis Procedure ............................................ 338 .
P1089, P1092 VVEL CONTROL SHAFT PO-
P0506 ISC SYSTEM ........................................ 339
. SITION SENSOR ............................................. 370 D
Description ........................................................... 339
. Description ............................................................ 370
.
DTC Logic ............................................................ 339
. DTC Logic ............................................................. 370
.
Diagnosis Procedure ............................................ 339 . Diagnosis Procedure ............................................ 370 .
Special Repair Requirement ................................. 373 . E
P0507 ISC SYSTEM ........................................ 341
.
Description ........................................................... 341
. P1090, P1093 VVEL ACTUATOR MOTOR .... 374
DTC Logic ............................................................ 341
. Description ............................................................ 374
. F
Diagnosis Procedure ............................................ 341 . DTC Logic ............................................................. 374
.
Diagnosis Procedure ............................................ 374 .
P0524 ENGINE OIL PRESSURE .................... 343
. Component Inspection (VVEL ACTUATOR MO-
DTC Logic ............................................................ 343
. TOR) ..................................................................... 376
. G
Diagnosis Procedure ............................................ 344. Component Inspection (VVEL ACTUATOR SUB
Component Inspection ......................................... 345 . ASSEMBLY) ......................................................... 377 .
Special Repair Requirement ................................. 377 . H
P0550 PSP SENSOR ...................................... 346
.
Description ........................................................... 346
. P1091 VVEL ACTUATOR MOTOR RELAY ... 378
DTC Logic ............................................................ 346
. Description ............................................................ 378
.
Diagnosis Procedure ............................................ 346 . I
DTC Logic ............................................................. 378
.
Component Inspection ......................................... 347 . Diagnosis Procedure ............................................ 378 .
Component Inspection .......................................... 380 .
P0555 BRAKE BOOSTER PRESSURE SEN- J
SOR ................................................................. 349
. P1148, P1168 CLOSED LOOP CONTROL .... 381
Description ........................................................... 349
. DTC Logic ............................................................. 381
.
DTC Logic ............................................................ 349
.
P1211 TCS CONTROL UNIT .......................... 382 K
Diagnosis Procedure ............................................ 349 .
Component Inspection ......................................... 352 . Description ............................................................ 382
.
DTC Logic ............................................................. 382
.
P0603 ECM POWER SUPPLY ........................ 354
. Diagnosis Procedure ............................................ 382 . L
Description ........................................................... 354
.
DTC Logic ............................................................ 354
. P1212 TCS COMMUNICATION LINE ............. 383
Diagnosis Procedure ............................................ 354 . Description ............................................................ 383
.
M
DTC Logic ............................................................. 383
.
P0605 ECM ...................................................... 356
. Diagnosis Procedure ............................................ 383 .
Description ........................................................... 356
.
DTC Logic ............................................................ 356
. P1217 ENGINE OVER TEMPERATURE ........ 384 N
Diagnosis Procedure ............................................ 357 . DTC Logic .........................................................◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo