Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Frontier 2006-2009 Approved Nissan Frontier 2008 EC
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ENGINE
A
ENGINE CONTROL SYSTEM
SECTION EC EC
C
D
E
CONTENTS
QR25DE INTAKE VALVE TIMING CONTROL ................ 45 F
Description ..............................................................45
.
BASIC INSPECTION .................................. 13
.
ON BOARD DIAGNOSTIC (OBD) SYSTEM .... 46 G
DIAGNOSIS AND REPAIR WORKFLOW ........13
. Introduction .............................................................46
.
Trouble Diagnosis Introduction .............................. 13
. Two Trip Detection Logic ........................................46 .
Emission-related Diagnostic Information ................47 .
INSPECTION AND ADJUSTMENT ...................18
. Malfunction Indicator Lamp (MIL) ...........................55 . H
Basic Inspection ..................................................... 18
. OBD System Operation Chart ................................58 .
Idle Speed and Ignition Timing Check ................... 22 . CONSULT-III Function (ENGINE) ..........................63 .
Procedure After Replacing ECM ............................ 23 . Generic Scan Tool (GST) Function ........................72 . I
VIN Registration ..................................................... 24
.
Accelerator Pedal Released Position Learning ...... 24 . COMPONENT DIAGNOSIS ........................ 75
.
Throttle Valve Closed Position Learning ................ 24 .
Idle Air Volume Learning ........................................ 24
. TROUBLE DIAGNOSIS - SPECIFICATION J
VALUE ............................................................... 75
FUNCTION DIAGNOSIS ............................. 27
. Description ..............................................................75
.
Testing Condition ....................................................75
. K
ENGINE CONTROL SYSTEM ...........................27
. Inspection Procedure ..............................................75 .
System Diagram ..................................................... 27
. Diagnosis Procedure ..............................................75 .
Engine Control Component Parts Location ............ 28 .
L
POWER SUPPLY AND GROUND CIRCUIT .... 83
MULTIPORT FUEL INJECTION SYSTEM ........34
. Diagnosis Procedure ..............................................83
.
System Description ................................................ 34
. Ground Inspection ..................................................86
.
M
ELECTRIC IGNITION SYSTEM ........................37
. U1000, U1001 CAN COMM CIRCUIT ............... 87
System Description ................................................ 37
. Description ..............................................................87
.
AIR CONDITIONING CUT CONTROL ..............38
. On Board Diagnosis Logic ......................................87 . N
Input/Output Signal Chart ....................................... 38
. DTC Confirmation Procedure .................................87 .
System Description ................................................ 38
. Diagnosis Procedure ..............................................87 .
AUTOMATIC SPEED CONTROL DEVICE U1010 CONTROL UNIT (CAN) ......................... 88 O
(ASCD) ..............................................................39
. Description ..............................................................88
.
On Board Diagnosis Logic ......................................88 .
System Description ................................................ 39
.
DTC Confirmation Procedure .................................88 . P
Component Description .......................................... 40
.
Diagnosis Procedure ..............................................88 .
CAN COMMUNICATION ...................................41
.
System Description ................................................ 41
.
P0011 IVT CONTROL ....................................... 90
On Board Diagnosis Logic ......................................90
.
EVAPORATIVE EMISSION SYSTEM ...............42
. DTC Confirmation Procedure .................................90.
Description ............................................................. 42
. Diagnosis Procedure ..............................................91
.
Component Inspection ............................................92
.
Revision: August 2007 EC-1 2008 Frontier
P0031, P0032 A/F SENSOR 1 HEATER .......... 93
. Diagnosis Procedure ............................................ 124
.
Description ............................................................. 93
. Component Inspection ......................................... 124
.
On Board Diagnosis Logic ..................................... 93 .
DTC Confirmation Procedure ................................ 93 . P0127 IAT SENSOR ........................................ 126
.
Diagnosis Procedure ............................................. 93 . Component Description ....................................... 126
.
Component Inspection ........................................... 95 . On Board Diagnosis Logic ................................... 126
.
DTC Confirmation Procedure ............................... 126 .
P0037, P0038 HO2S2 HEATER ....................... 96
. Diagnosis Procedure ............................................ 127
.
Description ............................................................. 96
. Component Inspection ......................................... 127
.
On Board Diagnosis Logic ..................................... 96 .
DTC Confirmation Procedure ................................ 96 . P0128 THERMOSTAT FUNCTION ................. 129
.
Diagnosis Procedure ............................................. 97 . On Board Diagnosis Logic ................................... 129
.
Component Inspection ........................................... 98 . DTC Confirmation Procedure ............................... 129 .
Diagnosis Procedure ............................................ 129
.
P0075 IVT CONTROL SOLENOID VALVE ...... 99
. Component Inspection ......................................... 129
.
Component Description ......................................... 99
.
On Board Diagnosis Logic ..................................... 99
. P0130 A/F SENSOR 1 ..................................... 131
.
DTC Confirmation Procedure ................................ 99. Component Description ....................................... 131
.
Diagnosis Procedure ............................................. 99
. On Board Diagnosis Logic ................................... 131
.
Component Inspection ..........................................100
. DTC Confirmation Procedure ............................... 131 .
Overall Function Check ........................................ 132
.
P0101 MAF SENSOR ..................................... 102
. Diagnosis Procedure ............................................ 132
.
Component Description ........................................102
.
On Board Diagnosis Logic ....................................102
. P0131 A/F SENSOR 1 ..................................... 135
.
DTC Confirmation Procedure ...............................102 . Component Description ....................................... 135
.
Overall Function Check ........................................103
. On Board Diagnosis Logic ................................... 135
.
Diagnosis Procedure ............................................104
. DTC Confirmation Procedure ............................... 135 .
Component Inspection ..........................................106
. Diagnosis Procedure ............................................ 136
.
P0102, P0103 MAF SENSOR ......................... 108
. P0132 A/F SENSOR 1 ..................................... 138
.
Component Description ........................................108
. Component Description ....................................... 138
.
On Board Diagnosis Logic ....................................108
. On Board Diagnosis Logic ................................... 138
.
DTC Confirmation Procedure ...............................108 . DTC Confirmation Procedure ............................... 138 .
Diagnosis Procedure ............................................109
. Diagnosis Procedure ............................................ 139
.
Component Inspection ..........................................110
. P0133 A/F SENSOR 1 ..................................... 141
.
P0112, P0113 IAT SENSOR ........................... 113
. Component Description ....................................... 141
.
Component Description ........................................113
. On Board Diagnosis Logic ................................... 141
.
On Board Diagnosis Logic ....................................113
. DTC Confirmation Procedure ............................... 141 .
DTC Confirmation Procedure ...............................113 . Diagnosis Procedure ............................................ 142
.
Diagnosis Procedure ............................................113
. P0137 HO2S2 .................................................. 146
.
Component Inspection ..........................................115
.
Component Description ....................................... 146
.
P0117, P0118 ECT SENSOR ......................... 116
. On Board Diagnosis Logic ................................... 146
.
Component Description ........................................116
. DTC Confirmation Procedure ............................... 146 .
On Board Diagnosis Logic ....................................116
. Overall Function Check ........................................ 147
.
DTC Confirmation Procedure ...............................117 . Diagnosis Procedure ............................................ 147
.
Diagnosis Procedure ............................................117
. Component Inspection ......................................... 149
.
Component Inspection ..........................................118
. P0138 HO2S2 .................................................. 151
.
P0122, P0123 TP SENSOR ............................ 119
. Component Description ....................................... 151
.
Component Description ........................................119
. On Board Diagnosis Logic ................................... 151
.
On Board Diagnosis Logic ....................................119
. DTC Confirmation Procedure ............................... 152 .
DTC Confirmation Procedure ...............................119 . Overall Function Check ........................................ 152
.
Diagnosis Procedure ............................................119
. Diagnosis Procedure ............................................ 153
.
Component Inspection ..........................................122
. Component Inspection ......................................... 156
.
P0125 ECT SENSOR ...................................... 123
. P0139 HO2S2 .................................................. 157
.
Component Description ........................................123
. Component Description ....................................... 157
.
On Board Diagnosis Logic ....................................123
. On Board Diagnosis Logic ................................... 157
.
DTC Confirmation Procedure ...............................123
. DTC Confirmation Procedure ............................... 157
.
Revision: August 2007 EC-2 2008 Frontier
Overall Function Check ........................................ 158
. Diagnosis Procedure ............................................ 196
.
Diagnosis Procedure ............................................ 158
. Component Inspection .......................................... 198
. A
Component Inspection ......................................... 160
.
P0420 THREE WAY CATALYST FUNCTION . 199
P0171 FUEL INJECTION SYSTEM FUNC- On Board Diagnosis Logic .................................... 199
.
EC
TION ................................................................ 162
. DTC Confirmation Procedure ............................... 199.
On Board Diagnosis Logic ................................... 162
. Overall Function Check ........................................ 200
.
DTC Confirmation Procedure ............................... 162. Diagnosis Procedure ............................................ 200
.
Diagnosis Procedure ............................................ 163
. C
P0441 EVAP CONTROL SYSTEM ................. 203
P0172 FUEL INJECTION SYSTEM FUNC- System Description ............................................... 203
.
TION ................................................................ 167
. On Board Diagnosis Logic .................................... 203
.
D
On Board Diagnosis Logic ................................... 167
. DTC Confirmation Procedure ............................... 203 .
DTC Confirmation Procedure ............................... 167. Overall Function Check ........................................ 204
.
Diagnosis Procedure ............................................ 168
. Diagnosis Procedure ............................................ 204
.
E
P0181 FTT SENSOR ....................................... 172
. P0442 EVAP CONTROL SYSTEM ................. 208
Component Description ........................................ 172
. On Board Diagnosis Logic .................................... 208
.
On Board Diagnosis Logic ................................... 172
. DTC Confirmation Procedure ............................... 209. F
DTC Confirmation Procedure ............................... 172. Diagnosis Procedure ............................................ 209
.
Diagnosis Procedure ............................................ 173
. Component Inspection .......................................... 214
.
Component Inspection ......................................... 174
.
P0443 EVAP CANISTER PURGE VOLUME G
P0182, P0183 FTT SENSOR .......................... 175
. CONTROL SOLENOID VALVE ...................... 215
Component Description ........................................ 175
. Description ............................................................ 215
.
On Board Diagnosis Logic ................................... 175
. On Board Diagnosis Logic .................................... 215 . H
DTC Confirmation Procedure ............................... 175. DTC Confirmation Procedure ............................... 215 .
Diagnosis Procedure ............................................ 175
. Diagnosis Procedure ............................................ 216 .
Component Inspection ......................................... 177
. Component Inspection .......................................... 218 .
I
P0222, P0223 APP SENSOR .......................... 178
. P0444, P0445 EVAP CANISTER PURGE
Component Description ........................................ 178
. VOLUME CONTROL SOLENOID VALVE ...... 220
On Board Diagnosis Logic ................................... 178
. Description ............................................................ 220
. J
DTC Confirmation Procedure ............................... 178. On Board Diagnosis Logic .................................... 220 .
Diagnosis Procedure ............................................ 178
. DTC Confirmation Procedure ............................... 221 .
Component Inspection ......................................... 181
. Diagnosis Procedure ............................................ 221 . K
Component Inspection .......................................... 222 .
P0300, P0301, P0302, P0303, P0304 MIS-
FIRE ................................................................. 182
. P0447 EVAP CANISTER VENT CONTROL
On Board Diagnosis Logic ................................... 182
. VALVE ............................................................. 223 L
DTC Confirmation Procedure ............................... 182. Component Description ........................................ 223
.
Diagnosis Procedure ............................................ 183
. On Board Diagnosis Logic .................................... 223
.
DTC Confirmation Procedure ............................... 223. M
P0327, P0328 KS ............................................ 188
. Diagnosis Procedure ............................................ 223
.
Component Description ........................................ 188
. Component Inspection .......................................... 225
.
On Board Diagnosis Logic ................................... 188
.
DTC Confirmation Procedure ............................... 188. P0448 EVAP CANISTER VENT CONTROL N
Diagnosis Procedure ............................................ 188
. VALVE ............................................................. 227
Component Inspection ......................................... 190
. Component Description ........................................ 227
.
On Board Diagnosis Logic .................................... 227
. O
P0335 CKP SENSOR (POS) ........................... 191
. DTC Confirmation Procedure ............................... 227.
Component Description ........................................ 191
. Diagnosis Procedure ............................................ 228
.
On Board Diagnosis Logic ................................... 191
. Component Inspection .......................................... 229
. P
DTC Confirmation Procedure ............................... 191.
Diagnosis Procedure ............................................ 192
. P0451 EVAP CONTROL SYSTEM PRES-
Component Inspection ......................................... 193
. SURE SENSOR ............................................... 231
Component Description ........................................ 231
.
P0340 CMP SENSOR (PHASE) ...................... 195
. On Board Diagnosis Logic .................................... 231
.
Component Description ........................................ 195
.
DTC Confirmation Procedure ............................... 231.
On Board Diagnosis Logic ................................... 195
.
Diagnosis Procedure ............................................ 231
.
DTC Confirmation Procedure ............................... 195
.
Revision: August 2007 EC-3 2008 Frontier
Component Inspection ..........................................232
. P0507 ISC SYSTEM ........................................ 268
.
Description ........................................................... 268
.
P0452 EVAP CONTROL SYSTEM PRES- On Board Diagnosis Logic ................................... 268 .
SURE SENSOR .............................................. 234
. DTC Confirmation Procedure ............................... 268 .
Component Description ........................................234
. Diagnosis Procedure ............................................ 268 .
On Board Diagnosis Logic ....................................234
.
DTC Confirmation Procedure ...............................234 . P0550 PSP SENSOR ...................................... 270
.
Diagnosis Procedure ............................................235
. Component Description ....................................... 270
.
Component Inspection ..........................................237
. On Board Diagnosis Logic ................................... 270
.
DTC Confirmation Procedure ............................... 270 .
P0453 EVAP CONTROL SYSTEM PRES- Diagnosis Procedure ............................................ 270
.
SURE SENSOR .............................................. 238
. Component Inspection ......................................... 272
.
Component Description ........................................238
.
On Board Diagnosis Logic ....................................238
. P0603 ECM POWER SUPPLY ........................ 273
.
DTC Confirmation Procedure ...............................238 . Component Description ....................................... 273
.
Diagnosis Procedure ............................................239
. On Board Diagnosis Logic ................................... 273
.
Component Inspection ..........................................242
. DTC Confirmation Procedure ............................... 273 .
Diagnosis Procedure ............................................ 273
.
P0455 EVAP CONTROL SYSTEM ................. 243
.
On Board Diagnosis Logic ....................................243
. P0605 ECM ...................................................... 275
.
DTC Confirmation Procedure ...............................243 . Component Description ....................................... 275
.
Diagnosis Procedure ............................................244
. On Board Diagnosis Logic ................................... 275
.
Component Inspection ..........................................248
. DTC Confirmation Procedure ............................... 275 .
Diagnosis Procedure ............................................ 276
.
P0456 EVAP CONTROL SYSTEM ................. 250
.
On Board Diagnosis Logic ....................................250
. P0643 SENSOR POWER SUPPLY ................. 277
.
DTC Confirmation Procedure ...............................251 . On Board Diagnosis Logic ................................... 277
.
Overall Function Check ........................................251
. DTC Confirmation Procedure ............................... 277 .
Diagnosis Procedure ............................................252
. Diagnosis Procedure ............................................ 277
.
Component Inspection ..........................................256
.
P0850 PNP SWITCH ....................................... 280
.
P0460 FUEL LEVEL SENSOR ....................... 258
. Component Description ....................................... 280
.
Component Description ........................................258
. On Board Diagnosis Logic ................................... 280
.
On Board Diagnosis Logic ....................................258
. DTC Confirmation Procedure ............................... 280 .
DTC Confirmation Procedure ...............................258 . Overall Function Check ........................................ 280
.
Diagnosis Procedure ............................................258
. Diagnosis Procedure ............................................ 281
.
P0461 FUEL LEVEL SENSOR ....................... 260
. P1148 CLOSED LOOP CONTROL ................. 284
.
Component Description ........................................260
. On Board Diagnosis Logic ................................... 284
.
On Board Diagnosis Logic ....................................260
.
Overall Function Check ........................................260
. P1217 ENGINE OVER TEMPERATURE ........ 285
.
Diagnosis Procedure ............................................261
. On Board Diagnosis Logic ................................... 285
.
Overall Function Check ........................................ 285
.
P0462, P0463 FUEL LEVEL SENSOR .......... 262
. Diagnosis Procedure ............................................ 286
.
Component Description ........................................262
. Main 12 Causes of Overheating .......................... 287 .
On Board Diagnosis Logic ....................................262
.
DTC Confirmation Procedure ...............................262 . P1225 TP SENSOR ......................................... 288
.
Diagnosis Procedure ............................................262
. Component Description ....................................... 288
.
On Board Diagnosis Logic ................................... 288
.
P0500 VSS ...................................................... 264
. DTC Confirmation Procedure ............................... 288 .
Description ............................................................264
. Diagnosis Procedure ............................................ 288
.
On Board Diagnosis Logic ....................................264 .
DTC Confirmation Procedure ...............................264 . P1226 TP SENSOR ......................................... 290
.
Overall Function Check ........................................265 . Component Description ....................................... 290
.
Diagnosis Procedure ............................................265 . On Board Diagnosis Logic ................................... 290
.
DTC Confirmation Procedure ............................... 290 .
P0506 ISC SYSTEM ....................................... 266
. Diagnosis Procedure ............................................ 290
.
Description ............................................................266
.
On Board Diagnosis Logic ....................................266 . P1421 COLD START CONTROL .................... 292
.
DTC Confirmation Procedure ...............................266 . Description ........................................................... 292
.
Diagnosis Procedure ............................................266 . On Board Diagnosis Logic ................................... 292 .
Revision: August 2007 EC-4 2008 Frontier
DTC Confirmation Procedure ............................... 292. DTC Confirmation Procedure ............................... 326.
Diagnosis Procedure ............................................ 292
. Diagnosis Procedure ............................................ 326
. A
Component Inspection .......................................... 328
.
P1550 BATTERY CURRENT SENSOR .......... 294
.
Component Description ........................................ 294
. P2100, P2103 THROTTLE CONTROL MO-
On Board Diagnosis Logic ................................... 294
. TOR RELAY .................................................... 329 EC
DTC Confirmation Procedure ............................... 294. Component Description ........................................ 329
.
Diagnosis Procedure ............................................ 294
. On Board Diagnosis Logic .................................... 329
.
Component Inspection ......................................... 296
. DTC Confirmation Procedure ............................... 329. C
Diagnosis Procedure ............................................ 330
.
P1551, P1552 BATTERY CURRENT SEN-
SOR ................................................................. 298
. P2101 ELECTRIC THROTTLE CONTROL D
Component Description ........................................ 298
. FUNCTION ...................................................... 332
On Board Diagnosis Logic ................................... 298
. Description ............................................................ 332
.
DTC Confirmation Procedure ............................... 298. On Board Diagnosis Logic .................................... 332 .
Diagnosis Procedure ............................................ 298
. DTC Confirmation Procedure ............................... 332 . E
Component Inspection ......................................... 300
. Diagnosis Procedure ............................................ 332 .
Component Inspection .......................................... 335 .
P1553 BATTERY CURRENT SENSOR .......... 302
. F
Component Description ........................................ 302
. P2118 THROTTLE CONTROL MOTOR ......... 336
On Board Diagnosis Logic ................................... 302
. Component Description ........................................ 336
.
DTC Confirmation Procedure ............................... 302. On Board Diagnosis Logic .................................... 336
.
Diagnosis Procedure ............................................ 302
. G
DTC Confirmation Procedure ............................... 336.
Component Inspection ......................................... 304
. Diagnosis Procedure ............................................ 336
.
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