ENGINE CONTROL SYSTEM

B ENGINE

SECTION

ENGINE CONTROL SYSTEM

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CONTENTSINDEX FOR DTC ....................................................... 8 . Alphabetical Index ................................................... 8 . DTC No. Index ...................................................... 12 . PRECAUTIONS ....................................................... 16 . Precautions for Supplemental Restraint System (SRS) AIR BAG and SEAT BELT PRE-TENSIONER ............................................................... 16 . Precautions for Battery Service ............................. 16 . On Board Diagnostic (OBD) System of Engine and A/T ......................................................................... 16 . Precaution ............................................................. 17 . Wiring Diagrams and Trouble Diagnosis ............... 19 . PREPARATION ........................................................ 20 . Special Service Tools ............................................ 20 . Commercial Service Tools ..................................... 21 . ENGINE CONTROL SYSTEM ................................. 22 . System Diagram .................................................... 22 . Vacuum Hose Drawing .......................................... 23 . System Chart ........................................................ 24 . Multiport Fuel Injection (MFI) System ................... 25 . Electronic Ignition (EI) System .............................. 27 . Air Conditioning Cut Control .................................. 28 . Fuel Cut Control (at No Load and High Engine Speed) ................................................................... 28 . CAN communication ............................................. 29 . BASIC SERVICE PROCEDURE ............................. 30 . Idle Speed and Ignition Timing Check ................... 30 . Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment ............................................................ 31 . Accelerator Pedal Released Position Learning ..... 42 . Throttle Valve Closed Position Learning ............... 42 . Idle Air Volume Learning ....................................... 42 . Fuel Pressure Check ............................................. 44 . ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 46 . Introduction ........................................................... 46 . Two Trip Detection Logic ....................................... 46 . Emission-related Diagnostic Information ............... 47 . NVIS (Nissan Vehicle Immobilizer System NATS) ... 62 Malfunction Indicator Lamp (MIL) .......................... 62 . OBD System Operation Chart ............................... 66 . TROUBLE DIAGNOSIS ........................................... 71 . Trouble Diagnosis Introduction .............................. 71 . DTC Inspection Priority Chart ................................ 74 . Fail-safe Chart ....................................................... 76 . Basic Inspection .................................................... 77 . Symptom Matrix Chart ........................................... 82 . Engine Control Component Parts Location ........... 86 . Circuit Diagram ...................................................... 92 . ECM Harness Connector Terminal Layout ............ 94 . ECM Terminals and Reference Value .................... 94 . CONSULT-II Function .......................................... 103 . Generic Scan Tool (GST) Function ...................... 116 . CONSULT-II Reference Value in Data Monitor .... 118 . Major Sensor Reference Graph in Data Monitor Mode .................................................................... 122 . TROUBLE DIAGNOSIS - SPECIFICATION VALUE 124 . Description ........................................................... 124 . Testing Condition ................................................. 124 . Inspection Procedure ........................................... 124 . Diagnostic Procedure .......................................... 125 . TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ...................................................................... 128 . Description ........................................................... 128 . Diagnostic Procedure .......................................... 128 . POWER SUPPLY CIRCUIT FOR ECM .................. 129 . Wiring Diagram .................................................... 129 . Diagnostic Procedure .......................................... 132 . DTC U1000, U1001 CAN COMMUNICATION LINE. 136 Description ........................................................... 136 . On Board Diagnosis Logic ................................... 136 . DTC Confirmation Procedure .............................. 136 . Wiring Diagram .................................................... 137 . Diagnostic Procedure .......................................... 138 . DTC P0011, P0021 IVT CONTROL ....................... 139 . Description ........................................................... 139 . CONSULT-II Reference Value in Data Monitor Mode . 139 On Board Diagnosis Logic ................................... 140 .

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DTC Confirmation Procedure .............................. 140 . Diagnostic Procedure .......................................... 141 . DTC P0031, P0032, P0051, P0052 HO2S1 HEATER 142 . Description ........................................................... 142 . CONSULT-II Reference Value in Data Monitor Mode . 142 On Board Diagnosis Logic ................................... 142 . DTC Confirmation Procedure .............................. 143 . Wiring Diagram .................................................... 144 . Diagnostic Procedure .......................................... 147 . Component Inspection ......................................... 149 . Removal and Installation ..................................... 149 . DTC P0037, P0038, P0057, P0058 HO2S2 HEATER 150 . Description ........................................................... 150 . CONSULT-II Reference Value in Data Monitor Mode . 150 On Board Diagnosis Logic ................................... 150 . DTC Confirmation Procedure .............................. 151 . Wiring Diagram .................................................... 152 . Diagnostic Procedure .......................................... 155 . Component Inspection ......................................... 157 . Removal and Installation ..................................... 157 . DTC P0101 MAF SENSOR .................................... 158 . Component Description ....................................... 158 . CONSULT-II Reference Value in Data Monitor Mode . 158 On Board Diagnosis Logic ................................... 158 . DTC Confirmation Procedure .............................. 159 . Overall Function Check ....................................... 160 . Wiring Diagram .................................................... 161 . Diagnostic Procedure .......................................... 162 . Component Inspection ......................................... 165 . Removal and Installation ..................................... 165 . DTC P0102, P0103 MAF SENSOR ........................ 166 . Component Description ....................................... 166 . CONSULT-II Reference Value in Data Monitor Mode . 166 On Board Diagnosis Logic ................................... 166 . DTC Confirmation Procedure .............................. 167 . Wiring Diagram .................................................... 168 . Diagnostic Procedure .......................................... 169 . Component Inspection ......................................... 172 . Removal and Installation ..................................... 172 . DTC P0112, P0113 IAT SENSOR .......................... 173 . Component Description ....................................... 173 . On Board Diagnosis Logic ................................... 173 . DTC Confirmation Procedure .............................. 173 . Wiring Diagram .................................................... 175 . Diagnostic Procedure .......................................... 176 . Component Inspection ......................................... 177 . Removal and Installation ..................................... 177 . DTC P0117, P0118 ECT SENSOR ......................... 178 . Component Description ....................................... 178 . On Board Diagnosis Logic ................................... 178 . DTC Confirmation Procedure .............................. 179 . Wiring Diagram .................................................... 180 . Diagnostic Procedure .......................................... 181 . Component Inspection ......................................... 182 . Removal and Installation ..................................... 182 .

DTC P0122, P0123 TP SENSOR ........................... 183 . Component Description ....................................... 183 . CONSULT-II Reference Value in Data Monitor Mode .183 On Board Diagnosis Logic ................................... 183 . DTC Confirmation Procedure ............................... 184 . Wiring Diagram .................................................... 185 . Diagnostic Procedure ........................................... 186 . Component Inspection ......................................... 188 . Removal and Installation ...................................... 188 . DTC P0125 ECT SENSOR ..................................... 189 . Component Description ....................................... 189 . On Board Diagnosis Logic ................................... 189 . DTC Confirmation Procedure ............................... 190 . Diagnostic Procedure ........................................... 190 . Component Inspection ......................................... 191 . Removal and Installation ...................................... 191 . DTC P0127 IAT SENSOR ....................................... 192 . Component Description ....................................... 192 . On Board Diagnosis Logic ................................... 192 . DTC Confirmation Procedure ............................... 192 . Diagnostic Procedure ........................................... 193 . Component Inspection ......................................... 193 . Removal and Installation ...................................... 194 . DTC P0128 THERMOSTAT FUNCTION ................ 195 . On Board Diagnosis Logic ................................... 195 . DTC Confirmation Procedure ............................... 195 . Diagnostic Procedure ........................................... 195 . Component Inspection ......................................... 196 . Removal and Installation ...................................... 196 . DTC P0132, P0152 HO2S1 .................................... 197 . Component Description ....................................... 197 . CONSULT-II Reference Value in Data Monitor Mode .197 On Board Diagnosis Logic ................................... 197 . DTC Confirmation Procedure ............................... 198 . Wiring Diagram .................................................... 199 . Diagnostic Procedure ........................................... 202 . Component Inspection ......................................... 204 . Removal and Installation ...................................... 206 . DTC P0133, P0153 HO2S1 .................................... 207 . Component Description ....................................... 207 . CONSULT-II Reference Value in Data Monitor Mode .207 On Board Diagnosis Logic ................................... 207 . DTC Confirmation Procedure ............................... 208 . Overall Function Check ........................................ 209 . Wiring Diagram .................................................... 210 . Diagnostic Procedure ........................................... 213 . Component Inspection ......................................... 217 . Removal and Installation ...................................... 219 . DTC P0134, P0154 HO2S1 .................................... 220 . Component Description ....................................... 220 . CONSULT-II Reference Value in Data Monitor Mode .220 On Board Diagnosis Logic ................................... 220 . DTC Confirmation Procedure ............................... 221 . Overall Function Check ........................................ 222 . Wiring Diagram .................................................... 223 .

EC-2

Diagnostic Procedure .......................................... 226 . Component Inspection ........................................ 227 . Removal and Installation ..................................... 229 . DTC P0138, P0158 HO2S2 ................................... 230 . Component Description ....................................... 230 . CONSULT-II Reference Value in Data Monitor Mode . 230 On Board Diagnosis Logic .................................. 230 . DTC Confirmation Procedure .............................. 231 . Wiring Diagram ................................................... 232 . Diagnostic Procedure .......................................... 235 . Component Inspection ........................................ 237 . Removal and Installation ..................................... 238 . DTC P0139, P0159 HO2S2 ................................... 239 . Component Description ....................................... 239 . CONSULT-II Reference Value in Data Monitor Mode . 239 On Board Diagnosis Logic .................................. 239 . DTC Confirmation Procedure .............................. 240 . Overall Function Check ....................................... 240 . Wiring Diagram ................................................... 242 . Diagnostic Procedure .......................................... 245 . Component Inspection ........................................ 247 . Removal and Installation ..................................... 249 . DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION ............................................................. 250 . On Board Diagnosis Logic .................................. 250 . DTC Confirmation Procedure .............................. 250 . Wiring Diagram ................................................... 252 . Diagnostic Procedure .......................................... 254 . DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION ............................................................. 258 . On Board Diagnosis Logic .................................. 258 . DTC Confirmation Procedure .............................. 258 . Wiring Diagram ................................................... 260 . Diagnostic Procedure .......................................... 262 . DTC P0181 FTT SENSOR ..................................... 266 . Component Description ....................................... 266 . On Board Diagnosis Logic .................................. 266 . DTC Confirmation Procedure .............................. 266 . Wiring Diagram ................................................... 268 . Diagnostic Procedure .......................................... 269 . Component Inspection ........................................ 270 . Removal and Installation ..................................... 270 . DTC P0182, P0183 FTT SENSOR ........................ 271 . Component Description ....................................... 271 . On Board Diagnosis Logic .................................. 271 . DTC Confirmation Procedure .............................. 271 . Wiring Diagram ................................................... 272 . Diagnostic Procedure .......................................... 273 . Component Inspection ........................................ 274 . Removal and Installation ..................................... 274 . DTC P0222, P0223 TP SENSOR .......................... 275 . Component Description ....................................... 275 . CONSULT-II Reference Value in Data Monitor Mode . 275 On Board Diagnosis Logic .................................. 275 . DTC Confirmation Procedure .............................. 276 . Wiring Diagram ................................................... 277 .

Diagnostic Procedure .......................................... 278 . Component Inspection ......................................... 280 . Removal and Installation ..................................... 280 . DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE .................... 281 . On Board Diagnosis Logic ................................... 281 . DTC Confirmation Procedure .............................. 281 . Diagnostic Procedure .......................................... 282 . DTC P0327, P0328 KS .......................................... 287 . Component Description ....................................... 287 . On Board Diagnosis Logic ................................... 287 . DTC Confirmation Procedure .............................. 287 . Wiring Diagram .................................................... 288 . Diagnostic Procedure .......................................... 289 . Component Inspection ......................................... 290 . Removal and Installation ..................................... 291 . DTC P0335 CKP SENSOR (POS) ......................... 292 . Component Description ....................................... 292 . CONSULT-II Reference Value in Data Monitor Mode . 292 On Board Diagnosis Logic ................................... 292 . DTC Confirmation Procedure .............................. 292 . Wiring Diagram .................................................... 293 . Diagnostic Procedure .......................................... 294 . Component Inspection ......................................... 297 . Removal and Installation ..................................... 297 . DTC P0340, P0345 CMP SENSOR (PHASE) ....... 298 . Component Description ....................................... 298 . CONSULT-II Reference Value in Data Monitor Mode . 298 On Board Diagnosis Logic ................................... 298 . DTC Confirmation Procedure .............................. 298 . Wiring Diagram .................................................... 299 . Diagnostic Procedure .......................................... 302 . Component Inspection ......................................... 305 . Removal and Installation ..................................... 305 . DTC P0420, P0430 THREE WAY CATALYST FUNCTION ....................................................................... 306 . On Board Diagnosis Logic ................................... 306 . DTC Confirmation Procedure .............................. 306 . Overall Function Check ....................................... 307 . Diagnostic Procedure .......................................... 308 . DTC P0441 EVAP CONTROL SYSTEM ................ 311 . System Description .............................................. 311 . On Board Diagnosis Logic ................................... 311 . DTC Confirmation Procedure .............................. 311 . Overall Function Check ....................................... 312 . Diagnostic Procedure .......................................... 313 . DTC P0442 EVAP CONTROL SYSTEM ................ 316 . On Board Diagnosis Logic ................................... 316 . DTC Confirmation Procedure .............................. 317 . Diagnostic Procedure .......................................... 318 . DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE ..................... 325 . Description ........................................................... 325 . CONSULT-II Reference Value in Data Monitor Mode . 325 On Board Diagnosis Logic ................................... 326 . DTC Confirmation Procedure .............................. 326 .

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Wiring Diagram .................................................... 327 . Diagnostic Procedure .......................................... 329 . Component Inspection ......................................... 330 . Removal and Installation ..................................... 331 . DTC P0447 EVAP CANISTER VENT CONTROL VALVE .................................................................... 332 . Component Description ....................................... 332 . CONSULT-II Reference Value in Data Monitor Mode . 332 On Board Diagnosis Logic ................................... 332 . DTC Confirmation Procedure .............................. 333 . Wiring Diagram .................................................... 334 . Diagnostic Procedure .......................................... 337 . Component Inspection ......................................... 339 . DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR ................................................................. 341 . Component Description ....................................... 341 . CONSULT-II Reference Value in Data Monitor Mode . 341 On Board Diagnosis Logic ................................... 341 . DTC Confirmation Procedure .............................. 342 . Diagnostic Procedure .......................................... 342 . Component Inspection ......................................... 343 . DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR ................................................................. 344 . Component Description ....................................... 344 . CONSULT-II Reference Value in Data Monitor Mode . 344 On Board Diagnosis Logic ................................... 344 . DTC Confirmation Procedure .............................. 345 . Wiring Diagram .................................................... 346 . Diagnostic Procedure .......................................... 349 . Component Inspection ......................................... 351 . DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR ................................................................. 352 . Component Description ....................................... 352 . CONSULT-II Reference Value in Data Monitor Mode . 352 On Board Diagnosis Logic ................................... 352 . DTC Confirmation Procedure .............................. 353 . Wiring Diagram .................................................... 354 . Diagnostic Procedure .......................................... 357 . Component Inspection ......................................... 361 . DTC P0455 EVAP CONTROL SYSTEM ................ 362 . On Board Diagnosis Logic ................................... 362 . DTC Confirmation Procedure .............................. 363 . Diagnostic Procedure .......................................... 364 . DTC P0456 EVAP CONTROL SYSTEM ................ 370 . On Board Diagnosis Logic ................................... 370 . DTC Confirmation Procedure .............................. 371 . Overall Function Check ....................................... 372 . Diagnostic Procedure .......................................... 373 . DTC P0460 FUEL LEVEL SENSOR ...................... 380 . Component Description ....................................... 380 . On Board Diagnosis Logic ................................... 380 . DTC Confirmation Procedure .............................. 380 . Diagnostic Procedure .......................................... 381 . Removal and Installation ..................................... 381 . DTC P0461 FUEL LEVEL SENSOR ...................... 382 .

Component Description ....................................... 382 . On Board Diagnosis Logic ................................... 382 . Overall Function Check ........................................ 382 . Diagnostic Procedure ........................................... 383 . Removal and Installation ...................................... 383 . DTC P0462 FUEL LEVEL SENSOR ...................... 384 . Component Description ....................................... 384 . On Board Diagnosis Logic ................................... 384 . DTC Confirmation Procedure ............................... 384 . Diagnostic Procedure ........................................... 385 . Removal and Installation ...................................... 385 . DTC P0500 VSS ..................................................... 386 . Description ........................................................... 386 . On Board Diagnosis Logic ................................... 386 . DTC Confirmation Procedure ............................... 386 . Overall Function Check ........................................ 387 . Diagnostic Procedure ........................................... 387 . DTC P0506 ISC SYSTEM ...................................... 388 . Description ........................................................... 388 . On Board Diagnosis Logic ................................... 388 . DTC Confirmation Procedure ............................... 388 . Diagnostic Procedure ........................................... 389 . DTC P0507 ISC SYSTEM ...................................... 390 . Description ........................................................... 390 . On Board Diagnosis Logic ................................... 390 . DTC Confirmation Procedure ............................... 390 . Diagnostic Procedure ........................................... 391 . DTC P0550 PSP SENSOR ..................................... 392 . Component Description ....................................... 392 . CONSULT-II Reference Value in Data Monitor Mode .392 On Board Diagnosis Logic ................................... 392 . DTC Confirmation Procedure ............................... 392 . Wiring Diagram .................................................... 393 . Diagnostic Procedure ........................................... 394 . Component Inspection ......................................... 396 . DTC P0605 ECM .................................................... 397 . Component Description ....................................... 397 . On Board Diagnosis Logic ................................... 397 . DTC Confirmation Procedure ............................... 397 . Diagnostic Procedure ........................................... 398 . DTC P1065 ECM POWER SUPPLY ....................... 400 . Component Description ....................................... 400 . On Board Diagnosis Logic ................................... 400 . DTC Confirmation Procedure ............................... 400 . Wiring Diagram .................................................... 401 . Diagnostic Procedure ........................................... 402 . DTC P1111, P1136 IVT CONTROL SOLENOID VALVE ..................................................................... 404 . Component Description ....................................... 404 . CONSULT-II Reference Value in Data Monitor Mode .404 On Board Diagnosis Logic ................................... 404 . DTC Confirmation Procedure ............................... 404 . Wiring Diagram .................................................... 405 . Diagnostic Procedure ........................................... 408 . Component Inspection ......................................... 410 . Removal and Installation ...................................... 410 . DTC P1121 ELECTRIC THROTTLE CONTROL

EC-4

ACTUATOR ............................................................411 . Component Description ........................................411 . On Board Diagnosis Logic ...................................411 . DTC Confirmation Procedure ...............................411 . Diagnostic Procedure .......................................... 412 . DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION ............................................................. 413 . Description .......................................................... 413 . On Board Diagnosis Logic .................................. 413 . DTC Confirmation Procedure .............................. 413 . Wiring Diagram ................................................... 414 . Diagnostic Procedure .......................................... 415 . Component Inspection ........................................ 419 . Remove and Installation ...................................... 419 . DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY ................................................................... 420 . Component Description ....................................... 420 . CONSULT-II Reference Value in Data Monitor Mode . 420 On Board Diagnosis Logic .................................. 420 . DTC Confirmation Procedure .............................. 420 . Wiring Diagram ................................................... 422 . Diagnostic Procedure .......................................... 423 . DTC P1128 THROTTLE CONTROL MOTOR ....... 425 . Component Description ....................................... 425 . On Board Diagnosis Logic .................................. 425 . DTC Confirmation Procedure .............................. 425 . Wiring Diagram ................................................... 426 . Diagnostic Procedure .......................................... 427 . Component Inspection ........................................ 428 . Removal and Installation ..................................... 429 . DTC P1143, P1163 HO2S1 .................................... 430 . Component Description ....................................... 430 . CONSULT-II Reference Value in Data Monitor Mode . 430 On Board Diagnosis Logic .................................. 430 . DTC Confirmation Procedure .............................. 431 . Overall Function Check ....................................... 432 . Diagnostic Procedure .......................................... 432 . Component Inspection ........................................ 434 . Removal and Installation ..................................... 435 . DTC P1144, P1164 HO2S1 .................................... 436 . Component Description ....................................... 436 . CONSULT-II Reference Value in Data Monitor Mode . 436 On Board Diagnosis Logic .................................. 436 . DTC Confirmation Procedure .............................. 437 . Overall Function Check ....................................... 438 . Diagnostic Procedure .......................................... 438 . Component Inspection ........................................ 440 . Removal and Installation ..................................... 441 . DTC P1146, P1166 HO2S2 .................................... 442 . Component Description ....................................... 442 . CONSULT-II Reference Value in Data Monitor Mode . 442 On Board Diagnosis Logic .................................. 442 . DTC Confirmation Procedure .............................. 443 . Overall Function Check ....................................... 443 . Wiring Diagram ................................................... 445 .

Diagnostic Procedure .......................................... 448 . Component Inspection ......................................... 450 . Removal and Installation ..................................... 452 . DTC P1147, P1167 HO2S2 .................................... 453 . Component Description ....................................... 453 . CONSULT-II Reference Value in Data Monitor Mode . 453 On Board Diagnosis Logic ................................... 453 . DTC Confirmation Procedure .............................. 454 . Overall Function Check ....................................... 454 . Wiring Diagram .................................................... 456 . Diagnostic Procedure .......................................... 459 . Component Inspection ......................................... 461 . Removal and Installation ..................................... 463 . DTC P1148, P1168 CLOSED LOOP CONTROL ... 464 . On Board Diagnosis Logic ................................... 464 . DTC Confirmation Procedure .............................. 464 . Overall Function Check ....................................... 464 . Diagnostic Procedure .......................................... 465 . DTC P1211 TCS CONTROL UNIT ......................... 466 . Description ........................................................... 466 . On Board Diagnosis Logic ................................... 466 . DTC Confirmation Procedure .............................. 466 . Diagnostic Procedure .......................................... 466 . DTC P1212 TCS COMMUNICATION LINE ........... 467 . Description ........................................................... 467 . On Board Diagnosis Logic ................................... 467 . DTC Confirmation Procedure .............................. 467 . Diagnostic Procedure .......................................... 467 . DTC P1217 ENGINE OVER TEMPERATURE ....... 468 . Description ........................................................... 468 . CONSULT-II Reference Value in Data Monitor Mode . 469 On Board Diagnosis Logic ................................... 469 . Overall Function Check ....................................... 470 . Wiring Diagram .................................................... 472 . Diagnostic Procedure .......................................... 474 . Main 12 Causes of Overheating .......................... 480 . Component Inspection ......................................... 480 . DTC P1225 TP SENSOR ....................................... 481 . Component Description ....................................... 481 . On Board Diagnosis Logic ................................... 481 . DTC Confirmation Procedure .............................. 481 . Diagnostic Procedure .......................................... 482 . Removal and Installation ..................................... 482 . DTC P1226 TP SENSOR ....................................... 483 . Component Description ....................................... 483 . On Board Diagnosis Logic ................................... 483 . DTC Confirmation Procedure .............................. 483 . Diagnostic Procedure .......................................... 484 . Removal and Installation ..................................... 484 . DTC P1229 SENSOR POWER SUPPLY ............... 485 . On Board Diagnosis Logic ................................... 485 . DTC Confirmation Procedure .............................. 485 . Wiring Diagram .................................................... 486 . Diagnostic Procedure .......................................... 487 . DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE .............................. 489 . Description ........................................................... 489 .

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CONSULT-II Reference Value in Data Monitor Mode . 489 On Board Diagnosis Logic ................................... 490 . DTC Confirmation Procedure .............................. 490 . Wiring Diagram .................................................... 491 . Diagnostic Procedure .......................................... 493 . Component Inspection ......................................... 496 . Removal and Installation ..................................... 496 . DTC P1446 EVAP CANISTER VENT CONTROL VALVE .................................................................... 497 . Component Description ....................................... 497 . CONSULT-II Reference Value in Data Monitor Mode . 497 On Board Diagnosis Logic ................................... 497 . DTC Confirmation Procedure .............................. 498 . Wiring Diagram .................................................... 499 . Diagnostic Procedure .......................................... 502 . Component Inspection ......................................... 504 . DTC P1564 ASCD STEERING SWITCH ............... 506 . Component Description ....................................... 506 . CONSULT-II Reference Value in Data Monitor Mode . 506 On Board Diagnosis Logic ................................... 506 . DTC Confirmation Procedure .............................. 507 . Wiring Diagram .................................................... 508 . Diagnostic Procedure .......................................... 510 . Component Inspection ......................................... 512 . DTC P1572 ASCD BRAKE SWITCH ..................... 513 . Component Description ....................................... 513 . CONSULT-II Reference Value in Data Monitor Mode . 513 On Board Diagnosis Logic ................................... 513 . DTC Confirmation Procedure .............................. 514 . Wiring Diagram .................................................... 515 . Diagnostic Procedure .......................................... 518 . Component Inspection ......................................... 528 . DTC P1574 ASCD VEHICLE SPEED SENSOR .... 530 . Component Description ....................................... 530 . On Board Diagnosis Logic ................................... 530 . DTC Confirmation Procedure .............................. 530 . Diagnostic Procedure .......................................... 531 . DTC P1706 PNP SWITCH ..................................... 532 . Component Description ....................................... 532 . CONSULT-II Reference Value in Data Monitor Mode . 532 On Board Diagnosis Logic ................................... 532 . DTC Confirmation Procedure .............................. 532 . Overall Function Check ....................................... 533 . Wiring Diagram .................................................... 534 . Diagnostic Procedure .......................................... 537 . DTC P1805 BRAKE SWITCH ................................ 540 . Description ........................................................... 540 . CONSULT-II Reference Value in Data Monitor Mode . 540 On Board Diagnosis Logic ................................... 540 . DTC Confirmation Procedure .............................. 540 . Wiring Diagram .................................................... 541 . Diagnostic Procedure .......................................... 542 . Component Inspection ......................................... 545 .

DTC P2122, P2123 APP SENSOR ........................ 546 . Component Description ....................................... 546 . CONSULT-II Reference Value in Data Monitor Mode .546 On Board Diagnosis Logic ................................... 546 . DTC Confirmation Procedure ............................... 547 . Wiring Diagram .................................................... 548 . Diagnostic Procedure ........................................... 549 . Component Inspection ......................................... 551 . Removal and Installation ...................................... 551 . DTC P2127, P2128 APP SENSOR ........................ 552 . Component Description ....................................... 552 . CONSULT-II Reference Value in Data Monitor Mode .552 On Board Diagnosis Logic ................................... 552 . DTC Confirmation Procedure ............................... 553 . Wiring Diagram .................................................... 554 . Diagnostic Procedure ........................................... 555 . Component Inspection ......................................... 557 . Removal and Installation ...................................... 557 . DTC P2135 TP SENSOR ....................................... 558 . Component Description ....................................... 558 . CONSULT-II Reference Value in Data Monitor Mode .558 On Board Diagnosis Logic ................................... 558 . DTC Confirmation Procedure ............................... 559 . Wiring Diagram .................................................... 560 . Diagnostic Procedure ........................................... 561 . Component Inspection ......................................... 563 . Removal and Installation ...................................... 563 . DTC P2138 APP SENSOR ..................................... 564 . Component Description ....................................... 564 . CONSULT-II Reference Value in Data Monitor Mode .564 On Board Diagnosis Logic ................................... 564 . DTC Confirmation Procedure ............................... 565 . Wiring Diagram .................................................... 566 . Diagnostic Procedure ........................................... 567 . Component Inspection ......................................... 570 . Removal and Installation ...................................... 570 . IGNITION SIGNAL ................................................. 571 . Component Description ....................................... 571 . Wiring Diagram .................................................... 572 . Diagnostic Procedure ........................................... 577 . Component Inspection ......................................... 582 . Removal and Installation ...................................... 582 . INJECTOR CIRCUIT .............................................. 583 . Component Description ....................................... 583 . CONSULT-II Reference Value in Data Monitor Mode .583 Wiring Diagram .................................................... 584 . Diagnostic Procedure ........................................... 585 . Component Inspection ......................................... 588 . Removal and Installation ...................................... 588 . FUEL PUMP CIRCUIT ............................................ 589 . Description ........................................................... 589 . CONSULT-II Reference Value in Data Monitor Mode .589 Wiring Diagram .................................................... 590 .

EC-6

Diagnostic Procedure .......................................... 591 . Component Inspection ........................................ 594 . Removal and Installation ..................................... 595 . REFRIGERANT PRESSURE SENSOR ................ 596 . Component Description ....................................... 596 . Wiring Diagram ................................................... 597 . Diagnostic Procedure .......................................... 598 . Removal and Installation ..................................... 600 . ELECTRICAL LOAD SIGNAL ............................... 601 . Description .......................................................... 601 . CONSULT-II Reference Value in Data Monitor Mode . 601 Diagnostic Procedure .......................................... 601 . ASCD BRAKE SWITCH ........................................ 602 . Component Description ....................................... 602 . CONSULT-II Reference Value in Data Monitor Mode . 602 Wiring Diagram ................................................... 603 . Diagnostic Procedure .......................................... 606 . Component Inspection ........................................ 616 . ASCD INDICATOR ................................................ 618 . Component Description ....................................... 618 . CONSULT-II Reference Value in Data Monitor Mode . 618 Wiring Diagram ................................................... 619 . Diagnostic Procedure .......................................... 620 . MIL AND DATA LINK CONNECTOR .................... 621 . Wiring Diagram ................................................... 621 . EVAPORATIVE EMISSION SYSTEM .................... 623 .

Description ........................................................... 623 . Component Inspection ......................................... 626 . Removal and Installation ..................................... 627 . How to Detect Fuel Vapor Leakage ..................... 627 . ON BOARD REFUELING VAPOR RECOVERY (ORVR) ................................................................... 630 . System Description .............................................. 630 . Diagnostic Procedure .......................................... 631 . Component Inspection ......................................... 633 . POSITIVE CRANKCASE VENTILATION .............. 635 . Description ........................................................... 635 . Component Inspection ......................................... 635 . AUTOMATIC SPEED CONTROL DEVICE (ASCD). 637 System Description .............................................. 637 . Component Description ....................................... 638 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 639 . Fuel Pressure ...................................................... 639 . Idle Speed and Ignition Timing ............................ 639 . Calculated Load Value ......................................... 639 . Mass Air Flow Sensor .......................................... 639 . Intake Air Temperature Sensor ............................ 639 . Engine Coolant Temperature Sensor .................. 639 . Heated Oxygen Sensor 1 Heater ........................ 639 . Heated Oxygen sensor 2 Heater ......................... 639 . Crankshaft Position Sensor (POS) ...................... 640 . Camshaft Position Sensor (PHASE) ................... 640 . Throttle Control Motor .......................................... 640 . Injector ................................................................. 640 . Fuel Pump ........................................................... 640 .

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INDEX FOR DTC INDEX FOR DTC Alphabetical IndexPFP:00024ABS009A9

NOTE: If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-136, "DTC U1000, U1001 CAN COMMUNICATION LINE" .:Applicable : Not applicable DTC*1 Items (CONSULT-II screen terms) A/T INTERLOCK A/T TCC S/V FNCTN APP SEN 1/CIRC APP SEN 1/CIRC APP SEN 2/CIRC APP SEN 2/CIRC APP SENSOR ASCD BRAKE SW ASCD SW ASCD VHL SPD SEN ATF TEMP SEN/CIRC BRAKE SW/CIRCUIT CAN COMM CIRCUIT CAN COMM CIRCUIT CKP SEN/CIRCUIT CLOSED LOOP-B1 CLOSED LOOP-B2 CMP SEN/CIRC-B1 CMP SEN/CIRC-B2 CTP LEARNING CTP LEARNING CYL 1 MISFIRE CYL 2 MISFIRE CYL 3 MISFIRE CYL 4 MISFIRE CYL 5 MISFIRE CYL 6 MISFIRE D/C SOLENOID/CIRC D/C SOLENOID FNCTN ECM ECM BACK UP/CIRCUIT ECT SEN/CIRCUIT ECT SEN/CIRCUIT ECT SENSOR ENG OVER TEMP ENGINE SPEED SIG ETC ACTR CONSULT-II GST*2 P1730 P0744 P2122 P2123 P2127 P2128 P2138 P1572 P1564 P1574 P0710 P1805 U1000 U1001 P0335 P1148 P1168 P0340 P0345 P1225 P1226 P0301 P0302 P0303 P0304 P0305 P0306 P1762 P1764 P0605 P1065 P0117 P0118 P0125 P1217 P0725 P1121 Trip ECM*3 1730 0744 2122 2123 2127 2128 2138 1572 1564 1574 0710 1805 1000*5 1001*5

MIL lighting up or

Reference page

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AT-120 AT-102 EC-546 EC-546 EC-552 EC-552 EC-564 EC-513 EC-506 EC-530 AT-114 EC-540 EC-136 EC-136 EC-292 EC-464 EC-464 EC-298 EC-298 EC-481 EC-483 EC-281 EC-281 EC-281 EC-281 EC-281 EC-281 AT-133 AT-135 EC-397 EC-400 EC-178 EC-178 EC-189 EC-468 AT-98 EC-411

0335 1148 1168 0340 0345 1225 1226 0301 0302 0303 0304 0305 0306 1762 1764 0605 1065 0117 0118 0125 1217 0725 1121

EC-8

INDEX FOR DTCDTC*1 Items (CONSULT-II screen terms) ETC FUNCTION/CIRC ETC MOT ETC MOT PWR ETC MOT PWR EVAP GROSS LEAK EVAP PURG FLOW/MON EVAP SMALL LEAK EVAP SYS PRES SEN EVAP SYS PRES SEN EVAP SYS PRES SEN EVAP VERY SML LEAK FR/B SOLENOID/CIRC FR/B SOLENOID FNCT FTT SEN/CIRCUIT FTT SEN/CIRCUIT FTT SENSOR FUEL LEV SEN SLOSH FUEL LEVEL SENSOR FUEL LEVL SEN/CIRC FUEL SYS-LEAN-B1 FUEL SYS-LEAN-B2 FUEL SYS-RICH-B1 FUEL SYS-RICH-B2 HLR/C SOL FNCTN HLR/C SOL/CIRC HO2S1 (B1) HO2S1 (B1) HO2S1 (B1) HO2S1 (B1) HO2S1 (B1) HO2S1 (B2) HO2S1 (B2) HO2S1 (B2) HO2S1 (B2) HO2S1 (B2) HO2S1 HTR (B1) HO2S1 HTR (B1) HO2S1 HTR (B2) HO2S1 HTR (B2) HO2S2 (B1) HO2S2 (B1) HO2S2 (B1) CONSULT-II GST*2 P1122 P1128 P1124 P1126 P0455 P0441 P0442 P0451 P0452 P0453 P0456 P1757 P1759 P0182 P0183 P0181 P0460 P0461 P0462 P0171 P0174 P0172 P0175 P1769 P1767 P0132 P0133 P0134 P1143 P1144 P0152 P0153 P0154 P1163 P1164 P0031 P0032 P0051 P0052 P0138 P0139 P1146 Trip ECM*3 1122 1128 1124 1126 0455 0441 0442 0451 0452 0453 0456 1757 1759 0182 0183 0181 0460 0461 0462 0171 0174 0172 0175 1769 1767 0132 0133 0134 1143 1144 0152 0153 0154 1163 1164 0031 0032 0051 0052 0138 0139 1146 1 1 1 1 2 2 2 2 2 2 2 1 1 2 2 2 2 2 2 2 2 2 2 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 MIL lighting up Reference page

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EC-413 EC-425 EC-420 EC-420 EC-362 EC-311 EC-316 EC-341 EC-344 EC-352 EC-370 AT-129 AT-131 EC-271 EC-271 EC-266 EC-380 EC-382 EC-384 EC-250 EC-250 EC-258 EC-258 AT-139 AT-137 EC-197 EC-207 EC-220 EC-430 EC-436 EC-197 EC-207 EC-220 EC-430 EC-436 EC-142 EC-142 EC-142 EC-142 EC-230 EC-239 EC-442

EC

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EC-9

INDEX FOR DTCDTC*1 Items (CONSULT-II screen terms) HO2S2 (B1) HO2S2 (B2) HO2S2 (B2) HO2S2 (B2) HO2S2 (B2) HO2S2 HTR (B1) HO2S2 HTR (B1) HO2S2 HTR (B2) HO2S2 HTR (B2) I/C SOLENOID/CIRC I/C SOLENOID FNCTN IAT SEN/CIRCUIT IAT SEN/CIRCUIT IAT SENSOR INT/V TIM CONT-B1 INT/V TIM CONT-B2 INT/V TIM V/CIR-B1 INT/V TIM V/CIR-B2 ISC SYSTEM ISC SYSTEM KNOCK SEN/CIRC-B1 KNOCK SEN/CIRC-B1 L/PRESS SOL/CIRC LC/B SOLENOID FNCT LC/B SOLENOID/CIRC MAF SEN/CIRCUIT MAF SEN/CIRCUIT MAF SEN/CIRCUIT MULTI CYL MISFIRE NATS MALFUNCTION NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. P-N POS SW/CIRCUIT PNP SW/CIRC PURG VOLUME CONT/V PURG VOLUME CONT/V PURG VOLUME CONT/V PW ST P SEN/CIRC SENSOR POWER/CIRC TCC SOLENOID/CIRC CONSULT-II GST*2 P1147 P0158 P0159 P1166 P1167 P0037 P0038 P0057 P0058 P1752 P1754 P0112 P0113 P0127 P0011 P0021 P1111 P1136 P0506 P0507 P0327 P0328 P0745 P1774 P1772 P0101 P0102 P0103 P0300 P1610 - P1615 No DTC Trip ECM*3 1147 0158 0159 1166 1167 0037 0038 0057 0058 1752 1754 0112 0113 0127 0011 0021 1111 1136 0506 0507 0327 0328 0745 1774 1772 0101 0102 0103 0300 1610 - 1615 Flashing*4 2 2 2 2 2 2 2 2 2 1 1 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 2 2 MIL lighting up Flashing*4 Reference page

EC-453 EC-230 EC-239 EC-442 EC-453 EC-150 EC-150 EC-150 EC-150 AT-125 AT-127 EC-173 EC-173 EC-192 EC-139 EC-139 EC-404 EC-404 EC-388 EC-390 EC-287 EC-287 AT-104 AT-143 AT-141 EC-158 EC-166 EC-166 EC-281 EC-62 EC-63

P0000 P1706 P0705 P0444 P0445 P1444 P0550 P1229 P0740

0000 1706 0705 0444 0445 1444 0550 1229 0740

2 2 2 2 2 2 1 2

EC-532 AT-94 EC-325 EC-325 EC-489 EC-392 EC-485 AT-100

EC-10

INDEX FOR DTCDTC*1 Items (CONSULT-II screen terms) TCS C/U FUNCTN TCS/CIRC THERMSTAT FNCTN TP SEN 1/CIRC TP SEN 1/CIRC TP SEN 2/CIRC TP SEN 2/CIRC TP SEN/CIRC A/T TP SENSOR TURBINE REV S/CIRC TW CATALYST SYS-B1 TW CATALYST SYS-B2 VEH SPD SEN/CIR AT*6 VEH SPEED SEN/CIRC*6 VENT CONTROL VALVE VENT CONTROL VALVE CONSULT-II GST*2 P1211 P1212 P0128 P0222 P0223 P0122 P0123 P1705 P2135 P1716 P0420 P0430 P0720 P0500 P0447 P1446 Trip ECM*3 1211 1212 0128 0222 0223 0122 0123 1705 2135 1716 0420 0430 0720 0500 0447 1446 2 2 2 1 1 1 1 1 1 2 2 2 2 2 2 2 MIL lighting up Reference page

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EC-466 EC-467 EC-195 EC-275 EC-275 EC-183 EC-183 AT-112 EC-558 AT-116 EC-306 EC-306 AT-96 EC-386 EC-332 EC-497

EC

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H

*1: 1st trip DTC No. is the same as DTC No. *2: This number is prescribed by SAE J2012. *3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN. *4: When engine is running. *5: The troubleshooting for this DTC needs CONSULT-II. *6: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.

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EC-11

INDEX FOR DTC DTC No. IndexABS009AA

NOTE: If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-136, "DTC U1000, U1001 CAN COMMUNICATION LINE" .:Applicable : Not applicable DTC*1 CONSULT-II GST*2

ECM*3

Items (CONSULT-II screen terms) NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. CAN COMM CIRCUIT CAN COMM CIRCUIT NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. INT/V TIM CONT-B1 INT/V TIM CONT-B2 HO2S1 HTR (B1) HO2S1 HTR (B1) HO2S2 HTR (B1) HO2S2 HTR (B1) HO2S1 HTR (B2) HO2S1 HTR (B2) HO2S2 HTR (B2) HO2S2 HTR (B2) MAF SEN/CIRCUIT MAF SEN/CIRCUIT MAF SEN/CIRCUIT IAT SEN/CIRCUIT IAT SEN/CIRCUIT ECT SEN/CIRCUIT ECT SEN/CIRCUIT TP SEN 2/CIRC TP SEN 2/CIRC ECT SENSOR IAT SENSOR THERMSTAT FNCTN HO2S1 (B1) HO2S1 (B1) HO2S1 (B1) HO2S2 (B1) HO2S2 (B1) HO2S1 (B2) HO2S1 (B2) HO2S1 (B2) HO2S2 (B2)

Trip

MIL lighting up

Reference page

No DTC U1000 U1001 P0000 P0011 P0021 P0031 P0032 P0037 P0038 P0051 P0052 P0057 P0058 P0101 P0102 P0103 P0112 P0113 P0117 P0118 P0122 P0123 P0125 P0127 P0128 P0132 P0133 P0134 P0138 P0139 P0152 P0153 P0154 P0158

Flashing*4 1000*5 1001*5 0000 0011 0021 0031 0032 0037 0038 0051 0052 0057 0058 0101 0102 0103 0112 0113 0117 0118 0122 0123 0125 0127 0128 0132 0133 0134 0138 0139 0152 0153 0154 0158

1 2 2 2 2 2 2 2 2 2 2 2 1 1 1 2 2 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2

Flashing*4

EC-63 EC-136 EC-136 EC-139 EC-139 EC-142 EC-142 EC-150 EC-150 EC-142 EC-142 EC-150 EC-150 EC-158 EC-166 EC-166 EC-173 EC-173 EC-178 EC-178 EC-183 EC-183 EC-189 EC-192 EC-195 EC-197 EC-207 EC-220 EC-230 EC-239 EC-197 EC-207 EC-220 EC-230

EC-12

INDEX FOR DTCDTC*1 CONSULT-II GST*2 P0159 P0171 P0172 P0174 P0175 P0181 P0182 P0183 P0222 P0223 P0300 P0301 P0302 P0303 P0304 P0305 P0306 P0327 P0328 P0335 P0340 P0345 P0420 P0430 P0441 P0442 P0444 P0445 P0447 P0451 P0452 P0453 P0455 P0456 P0460 P0461 P0462 P0500 P0506 P0507 P0550 P0605 ECM*3 0159 0171 0172 0174 0175 0181 0182 0183 0222 0223 0300 0301 0302 0303 0304 0305 0306 0327 0328 0335 0340 0345 0420 0430 0441 0442 0444 0445 0447 0451 0452 0453 0455 0456 0460 0461 0462 0500 0506 0507 0550 0605 Items (CONSULT-II screen terms) HO2S2 (B2) FUEL SYS-LEAN-B1 FUEL SYS-RICH-B1 FUEL SYS-LEAN-B2 FUEL SYS-RICH-B2 FTT SENSOR FTT SEN/CIRCUIT FTT SEN/CIRCUIT TP SEN 1/CIRC TP SEN 1/CIRC MULTI CYL MISFIRE CYL 1 MISFIRE CYL 2 MISFIRE CYL 3 MISFIRE CYL 4 MISFIRE CYL 5 MISFIRE CYL 6 MISFIRE KNOCK SEN/CIRC-B1 KNOCK SEN/CIRC-B1 CKP SEN/CIRCUIT CMP SEN/CIRC-B1 CMP SEN/CIRC-B2 TW CATALYST SYS-B1 TW CATALYST SYS-B2 EVAP PURG FLOW/MON EVAP SMALL LEAK PURG VOLUME CONT/V PURG VOLUME CONT/V VENT CONTROL VALVE EVAP SYS PRES SEN EVAP SYS PRES SEN EVAP SYS PRES SEN EVAP GROSS LEAK EVAP VERY SML LEAK FUEL LEV SEN SLOSH FUEL LEVEL SENSOR FUEL LEVL SEN/CIRC VEH SPEED SEN/CIRC* ISC SYSTEM ISC SYSTEM PW ST P SEN/CIRC ECM6

Trip

MIL lighting up or

Reference page

A

2 2 2 2 2 2 2 2 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 or 2

EC-239 EC-250 EC-258 EC-250 EC-258 EC-266 EC-271 EC-271 EC-275 EC-275 EC-281 EC-281 EC-281 EC-281 EC-281 EC-281 EC-281 EC-287 EC-287 EC-292 EC-298 EC-298 EC-306 EC-306 EC-311 EC-316 EC-325 EC-325 EC-332 EC-341 EC-344 EC-352 EC-362 EC-370 EC-380 EC-382 EC-384 EC-386 EC-388 EC-390 EC-392 EC-397

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EC-13

INDEX FOR DTCDTC*1 CONSULT-II GST*2 P0705 P0710 P0720 P0725 P0740 P0744 P0745 P1065 P1111 P1121 P1122 P1124 P1126 P1128 P1136 P1143 P1144 P1146 P1147 P1148 P1163 P1164 P1166 P1167 P1168 P1211 P1212 P1217 P1225 P1226 P1229 P1444 P1446 P1564 P1572 P1574 P1610 - P1615 P1705 P1706 P1716 P1730 P1752 ECM*3 0705 0710 0720 0725 0740 0744 0745 1065 1111 1121 1122 1124 1126 1128 1136 1143 1144 1146 1147 1148 1163 1164 1166 1167 1168 1211 1212 1217 1225 1226 1229 1444 1446 1564 1572 1574 1610 - 1615 1705 1706 1716 1730 1752 Items (CONSULT-II screen terms) PNP SW/CIRC ATF TEMP SEN/CIRC VEH SPD SEN/CIR AT*6 ENGINE SPEED SIG TCC SOLENOID/CIRC A/T TCC S/V FNCTN L/PRESS SOL/CIRC ECM BACK UP/CIRCUIT INT/V TIM V/CIR-B1 ETC ACTR ETC FUNCTION/CIRC ETC MOT PWR ETC MOT PWR ETC MOT INT/V TIM V/CIR-B2 HO2S1 (B1) HO2S1 (B1) HO2S2 (B1) HO2S2 (B1) CLOSED LOOP-B1 HO2S1 (B2) HO2S1 (B2) HO2S2 (B2) HO2S2 (B2) CLOSED LOOP-B2 TCS C/U FUNCTN TCS/CIRC ENG OVER TEMP CTP LEARNING CTP LEARNING SENSOR POWER/CIRC PURG VOLUME CONT/V VENT CONTROL VALVE ASCD SW ASCD BRAKE SW ASCD VHL SPD SEN NATS MALFUNCTION TP SEN/CIRC A/T P-N POS SW/CIRCUIT TURBINE REV S/CIRC A/T INTERLOCK I/C SOLENOID/CIRC Trip MIL lighting up Reference page

2 2 2 2 2 2 2 2 2 1 1 1 1 1 2 2 2 2 2 1 2 2 2 2 1 2 2 1 2 2 1 2 2 1 1 1 2 1 2 2 1 1

AT-94 AT-114 AT-96 AT-98 AT-100 AT-102 AT-104 EC-400 EC-404 EC-411 EC-413 EC-420 EC-420 EC-425 EC-404 EC-430 EC-436 EC-442 EC-453 EC-464 EC-430 EC-436 EC-442 EC-453 EC-464 EC-466 EC-467 EC-468 EC-481 EC-483 EC-485 EC-489 EC-497 EC-506 EC-513 EC-530 EC-62 AT-112 EC-532 AT-116 AT-120 AT-125

EC-14

INDEX FOR DTCDTC*1 CONSULT-II GST*2 P1754 P1757 P1759 P1762 P1764 P1767 P1769 P1772 P1774 P1805 P2122 P2123 P2127 P2128 P2135 P2138 ECM*3 1754 1757 1759 1762 1764 1767 1769 1772 1774 1805 2122 2123 2127 2128 2135 2138 Items (CONSULT-II screen terms) I/C SOLENOID FNCTN FR/B SOLENOID/CIRC FR/B SOLENOID FNCT D/C SOLENOID/CIRC D/C SOLENOID FNCTN HLR/C SOL/CIRC HLR/C SOL FNCTN LC/B SOLENOID/CIRC LC/B SOLENOID FNCT BRAKE SW/CIRCUIT APP SEN 1/CIRC APP SEN 1/CIRC APP SEN 2/CIRC APP SEN 2/CIRC TP SENSOR APP SENSOR Trip MIL lighting up Reference page

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1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1

AT-127 AT-129 AT-131 AT-133 AT-135 AT-137 AT-139 AT-141 AT-143 EC-540 EC-546 EC-546 EC-552 EC-552 EC-558 EC-564

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*1: 1st trip DTC No. is the same as DTC No. *2: This number is prescribed by SAE J2012. *3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN. *4: When engine is running. *5: The troubleshooting for this DTC needs CONSULT-II. *6: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.

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EC-15

PRECAUTIONS PRECAUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) AIR BAG and SEAT BELT PRE-TENSIONER

ABS009AB

The Supplemental Restraint System such as AIR BAG and SEAT BELT PRE-TENSIONER, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS and SB section of this Service Manual. WARNING: q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. q Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS section. q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Precautions for Battery Service

ABS009AC

This vehicle is equipped with the automatic window adjusting function. When a door is opened, the window automatically lowers slightly to avoid contact between the window and the roof. After the door is closed, the window will automatically raise slightly. On vehicles equipped with the automatic window adjusting function, lower both the driver and front passenger side windows before disconnecting the battery cables. This will prevent interference between the side window and the roof when either door is opened/closed. CAUTION: After the battery cables are disconnected, do not open/close the driver and/or front passenger door with the window in the full up position. The automatic window adjusting function will not work and the roof may be damaged.

On Board Diagnostic (OBD) System of Engine and A/T

ABS009AD

The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the driver of a malfunction causing emission deterioration. CAUTION: q Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will cause the MIL to light up. q Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease, dirt, bent terminals, etc.) q Certain systems and components, especially those related to OBD, may use a new style slidelocking type harness connector. For description and how to disconnect, refer to PG-80, "HARNESS CONNECTOR" . q Be sure to route and secure the harnesses properly after work. The interference of the harness with a bracket, etc. may cause the MIL to light up due to the short circuit. q Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system, etc. q Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and TCM (Transmission control module) before returning the vehicle to the customer.

EC-16

PRECAUTIONS Precautionq qABS009AE

q

q

Always use a 12 volt battery as power source. Do not attempt to disconnect battery cables while engine is running. Before connecting or disconnecting the ECM harness connector, turn ignition switch OFF and disconnect battery ground cable. Failure to do so may damage the ECM because battery voltage is applied to ECM even if ignition switch is turned OFF. Before removing parts, turn ignition switch OFF and then disconnect battery ground cable.SEF289H

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Do not disassemble ECM. If a battery cable is disconnected, the memory will return to the ECM value. The ECM will now start to self-control at its initial value. Engine operation can vary slightly when the terminal is disconnected. However, this is not an indication of a malfunction. Do not replace parts because of a slight variation.

E

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PBIB1164E

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q

When connecting ECM harness connector, fasten it securely with a lever as far as it will go as shown in the figure.

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KSEC406D

Lq

q

q

q

When connecting or disconnecting pin connectors into or from ECM, take care not to damage pin terminals (bend or break). Make sure that there are not any bends or breaks on ECM pin terminal, when connecting pin connectors. Securely connect ECM harness connectors. A poor connection can cause an extremely high (surge) voltage to develop in coil and condenser, thus resulting in damage to ICs. Keep engine control system harness at least 10 cm (4 in) away from adjacent harness, to prevent engine control system malfunctions due to receiving external noise, degraded operation of ICs, etc. Keep engine control system parts and harness dry.

M

PBIB0090E

EC-17

PRECAUTIONSq

q q q

q q

q

q

Before replacing ECM, perform ECM Terminals and Reference Value inspection and make sure ECM functions properly. Refer to EC-94 . Handle mass air flow sensor carefully to avoid damage. Do not disassemble mass air flow sensor. Do not clean mass air flow sensor with any type of detergent. Do not disassemble electric throttle control actuator. Even a slight leak in the air intake system can cause serious incidents. Do not shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS). After performing each TROUBLE DIAGNOSIS, perform DTC Confirmation Procedure or Overall Function Check. The DTC should not be displayed in the DTC Confirmation Procedure if the repair is completed. The Overall Function Check should be a good result if the repair is completed.

MEF040D

SEF217U

q

q

When measuring ECM signals with a circuit tester, never allow the two tester probes to contact. Accidental contact of probes will cause a short circuit and damage the ECM power transistor. Do not use ECM ground terminals when measuring input/ output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

SEF348N

EC-18

PRECAUTIONSq

B1 indicates the bank 1, B2 indicates the bank 2 as shown in the figure.

A

EC

CSEC893C

Dq q

Do not operate fuel pump when there is no fuel in lines. Tighten fuel hose clamps to the specified torque.

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GPBIB1100E

q q

q

Do not depress accelerator pedal when starting. Immediately after starting, do not rev up engine unnecessarily. Do not rev up engine just prior to shutdown.

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KSEF709Y

q

When installing C.B. ham radio or a mobile phone, be sure to observe the following as it may adversely affect electronic control systems depending on installation location. Keep the antenna as far as possible from the electronic control units. Keep the antenna feeder line more than 20 cm (8 in) away from the harness of electronic controls. Do not let them run parallel for a long distance. Adjust the antenna and feeder line so that the standingwave radio can be kept smaller. Be sure to ground the radio to vehicle body.

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SEF708Y

Wiring Diagrams and Trouble DiagnosisWhen you read wiring diagrams, refer to the following: q GI-15, "How to Read Wiring Diagrams" q PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit When you perform trouble diagnosis, refer to the following: q GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" q GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident"

ABS009AF

EC-19

PREPARATION PREPARATION Special Service ToolsThe actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Tool number (Kent-Moore No.) Tool name KV10117100 (J-36471-A) Heated oxygen sensor wrench Description Loosening or tightening heated oxygen sensor with 22 mm (0.87 in) hexagon nutPFP:00002ABS009AG

S-NT379

KV10114400 (J-38365) Heated oxygen sensor wrench

Loosening or tightening heated oxygen sensor a: 22 mm (0.87 in)

S-NT636

(J-44321) Fuel pressure gauge kit

Checking fuel pressure

LEC642

KV109E0010 (J-46209) Break-out box

Measuring the ECM signals with a circuit tester

S-NT825

KV109E0080 (J-45819) Y-cable adapter

Measuring the ECM signals with a circuit tester

S-NT826

EG17650301 (J-33984-A) Radiator cap tester adapter

Adapting radiator cap tester to radiator cap and radiator filler neck a: 28 (1.10) dia. b: 31.4 (1.236) dia. c: 41.3 (1.626) dia. Unit: mm (in)S-NT564

EC-20

PREPARATION Commercial Service ToolsTool name (Kent-Moore No.) Leak detector i.e.: (J41416) Description Locating the EVAP leakABS009AH

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EC

C

S-NT703

DApplying positive pressure through EVAP service port

EVAP service port adapter i.e.: (J41413-OBD)

E

S-NT704

FChecking fuel tank vacuum relief valve opening pressure

Fuel filler cap adapter i.e.: (MLR-8382)

G

HS-NT815

Socket wrench

Removing and installing engine coolant temperature sensor

I

JS-NT705

Oxygen sensor thread cleaner i.e.: (J-43897-18) (J-43897-12)

Reconditioning the exhaust system threads before installing a new oxygen sensor. Use with anti-seize lubricant shown below. a: 18 mm diameter with pitch 1.5 mm for Zirconia Oxygen Sensor b: 12 mm diameter with pitch 1.25 mm for Titania Oxygen SensorAEM488

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MLubricating oxygen sensor thread cleaning tool when reconditioning exhaust system threads.

Anti-seize lubricant i.e.: (PermatexTM 133AR or equivalent meeting MIL specification MIL-A907)S-NT779

EC-21

ENGINE CONTROL SYSTEM ENGINE CONTROL SYSTEM System DiagramPFP:23710ABS009AI

PBIB1101E

EC-22

ENGINE CONTROL SYSTEM Vacuum Hose DrawingABS009AJ

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PBIB1552E

Refer to EC-22, "System Diagram" for Vacuum Control System.

EC-23

ENGINE CONTROL SYSTEM System ChartInput (Sensor)q q q q q q q q q q q q q q q q q q q q q q q q q qABS009AK

ECM Function Fuel injection & mixture ratio control Electronic ignition system Fuel pump control ASCD vehicle speed control On board diagnostic system Heated oxygen sensor 1 heater control Heated oxygen sensor 2 heater control EVAP canister purge flow control Air conditioning cut control Cooling fan control

Output (Actuator) Fuel injector Power transistor Fuel pump relay Electric throttle control actuator MIL (On the instrument panel)*4 Heated oxygen sensor 1 heater Heated oxygen sensor 2 heater EVAP canister purge volume control solenoid valve Air conditioner relay*4 Cooling fan relay*4

Camshaft position sensor (PHASE) Crankshaft position sensor (POS) Mass air flow sensor Engine coolant temperature sensor Heated oxygen sensor 1 Throttle position sensor Accelerator pedal position sensor Park/neutral position (PNP) switch Intake air temperature sensor Power steering pressure sensor Ignition switch Battery voltage Knock sensor Refrigerant pressure sensor Stop lamp switch ASCD steering switch ASCD brake switch ASCD clutch switch Fuel level sensor*1 *3 EVAP control system pressure sensor Fuel tank temperature sensor*1 Heated oxygen sensor 2*2 TCM (Transmission control module)*3 Air conditioner switch*3 Wheel sensor*3 Electrical load signal*3

ON BOARD DIAGNOSIS for EVAP system

EVAP canister vent control valve

*1: This sensor is not used to control the engine system. This is used only for the on board diagnosis. *2: This sensor is not used to control the engine system under normal conditions. *3: This input signal is sent to the ECM through CAN communication line. *4: This output signal is sent from the ECM through CAN communication line.

EC-24

ENGINE CONTROL SYSTEM Multiport Fuel Injection (MFI) SystemINPUT/OUTPUT SIGNAL CHARTSensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Mass air flow sensor Engine coolant temperature sensor Heated oxygen sensor 1 Throttle position sensor Accelerator pedal position sensor Park/neutral position (PNP) switch Knock sensor Battery Power steering pressure sensor Heated oxygen sensor 2*1 Air conditioner switch*2 Wheel sensor*2 Input Signal to ECM Engine speed*3 Piston position Amount of intake air Engine coolant temperature Density of oxygen in exhaust gas Throttle position Accelerator pedal position Gear position Engine knocking condition Battery voltage*3ABS009AL

AECM function Actuator

EC

C

DFuel injection & mixture ratio control Fuel injector

E

Power steering operation Density of oxygen in exhaust gas Air conditioner operation Vehicle speed

F

G

*1: This sensor is not used to control the engine system under normal conditions. *2: This signal is sent to the ECM through CAN communication line. *3: ECM determines the start signal status by the signals of engine speed and battery voltage.

H

SYSTEM DESCRIPTIONThe amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the ECM memory. The program value is preset by engine operating conditions. These conditions are determined by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air flow sensor.I

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VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATIONIn addition, the amount of fuel injected is compensated to improve engine performance under various operating conditions as listed below. q During warm-up q When starting the engine q During acceleration q Hot-engine operation q When selector lever is changed from N to D (A/T models) q High-load, high-speed operation q During deceleration q During high engine speed operationK

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EC-25

ENGINE CONTROL SYSTEMMIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)

PBIB0121E

The mixture ratio feedback system provides the best air-fuel mixture ratio for driveability and emission control. The three way catalyst 1 can then better reduce CO, HC and NOx emissions. This system uses heated oxygen sensor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The ECM adjusts the injection pulse width according to the sensor voltage signal. For more information about heated oxygen sensor 1, refer to EC-197 . This maintains the mixture ratio within the range of stoichiometric (ideal air-fuel mixture). This stage is referred to as the closed loop control condition. Heated oxygen sensor 2 is located downstream of the three way catalyst 1. Even if the switching characteristics of heated oxygen sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal from heated oxygen sensor 2.

Open Loop ControlThe open loop system condition refers to when the ECM detects any of the following conditions. Feedback control stops in order to maintain stabilized fuel combustion. q Deceleration and acceleration q High-load, high-speed operation q Malfunction of heated oxygen sensor 1 or its circuit q Insufficient activation of heated oxygen sensor 1 at low engine coolant temperature q High engine coolant temperature q During warm-up q After shifting from N to D (A/T models) q When starting the engine

MIXTURE RATIO SELF-LEARNING CONTROLThe mixture ratio feedback control system monitors the mixture ratio signal transmitted from heated oxygen sensor 1. This feedback signal is then sent to the ECM. The ECM controls the basic mixture ratio as close to the theoretical mixture ratio as possible. However, the basic mixture ratio is not necessarily controlled as originally designed. Both manufacturing differences (i.e., mass air flow sensor hot film) and characteristic changes during operation (i.e., injector clogging) directly affect mixture ratio. Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This is then computed in terms of injection pulse duration to automatically compensate for the difference between the two ratios. Fuel trim refers to the feedback compensation value compared against the basic injection duration. Fuel trim includes short term fuel trim and long term fuel trim. Short term fuel trim is the short-term fuel compensation used to maintain the mixture ratio at its theoretical value. The signal from heated oxygen sensor 1 indicates whether the mixture ratio is RICH or LEAN compared to the theoretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and an increase in fuel volume if it is lean. Long term fuel trim is overall fuel compensation carried out long-term to compensate for continual deviation of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences, wear over time and changes in the usage environment.

EC-26

ENGINE CONTROL SYSTEMFUEL INJECTION TIMINGA

EC

C

SEF179U

D

Two types of systems are used.

Sequential Multiport Fuel Injection SystemFuel is injected into each cylinder during each engine cycle according to the firing order. This system is used when the engine is running.E

Simultaneous Multiport Fuel Injection SystemFuel is injected simultaneously into all six cylinders twice each engine cycle. In other words, pulse signals of the same width are simultaneously transmitted from the ECM. The six injectors will then receive the signals two times for each engine cycle. This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating.

F

G

FUEL SHUT-OFFFuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds.H

Electronic Ignition (EI) SystemINPUT/OUTPUT SIGNAL CHARTSensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Mass air flow sensor Engine coolant temperature sensor Throttle position sensor Accelerator pedal position sensor Knock sensor Park/neutral position (PNP) switch Battery Wheel sensor*1 Input Signal to ECM Engine speed*2 Piston position Amount of intake air Engine coolant temperature Throttle position Accelerator pedal position Engine knocking Gear position Battery voltage*2 Vehicle speed Ignition timing control ECM function Actuator

ABS009AM

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KPower transistor

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*1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTIONThe ignition timing is controlled by the ECM to maintain the best airfuel ratio for every running condition of the engine. The ignition timing data is stored in the ECM. This data forms the map shown. The ECM receives information such as the injection pulse width and camshaft position sensor signal. Computing this information, ignition signals are transmitted to the power transistor. e.g., N: 1,800 rpm, Tp: 1.50 msec A BTDC During the following conditions, the ignition timing is revised by the ECM according to the other data stored in the ECM. q At starting q During warm-up

SEF742M

EC-27

ENGINE CONTROL SYSTEMAt idle q At low battery voltage q During acceleration The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition. The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.q

Air Conditioning Cut ControlINPUT/OUTPUT SIGNAL CHARTSensor Air conditioner switch*1

ABS009AN

Input Signal to ECM Air conditioner ON signal Throttle position Accelerator pedal position Engine speed*2 Engine coolant temperature Battery voltage*2 Refrigerant pressure Power steering operation Vehicle speed

ECM function

Actuator

Throttle position sensor Accelerator pedal position sensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine coolant temperature sensor Battery Refrigerant pressure sensor Power steering pressure sensor Wheel sensor*1

Air conditioner cut control

Air conditioner relay

*1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTIONThis system improves engine operation when the air conditioner is used. Under the following conditions, the air conditioner is turned off. q When the accelerator pedal is fully depressed. q When cranking the engine. q At high engine speeds. q When the engine coolant temperature becomes excessively high. q When operating power steering during low engine speed or low vehicle speed. q When engine speed is excessively low. q When refrigerant pressure is excessively low or high.

Fuel Cut Control (at No Load and High Engine Speed)INPUT/OUTPUT SIGNAL CHARTSensor Park/neutral position (PNP) switch Accelerator pedal position sensor Engine coolant temperature sensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Wheel sensor* Input Signal to ECM Neutral position Accelerator pedal position Engine coolant temperature Engine speed Vehicle speed Fuel cut control Fuel injector ECM function Actuator

ABS009AO

*: This signal is sent to the ECM through CAN communication line.

SYSTEM DESCRIPTIONIf the engine speed is above 1,800 rpm under no load (for example, the shift position is neutral and engine speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed. Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.

EC-28

ENGINE CONTROL SYSTEMNOTE: This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-25 .A

CAN communicationSYSTEM DESCRIPTION

ABS009AP

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. Refer to LAN-5, "CAN COMMUNICATION" , about CAN communication for detail.

EC

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EC-29

BASIC SERVICE PROCEDURE BASIC SERVICE PROCEDURE Idle Speed and Ignition Timing CheckIDLE SPEED With CONSULT-IICheck idle speed in DATA MONITOR mode with CONSULT-II.PFP:00018ABS009AQ

SEF058Y

With GSTCheck idle speed with GST.

IGNITION TIMINGAny of following two methods may be used.

Method A1. 2. Attach timing light to loop wire as shown. Check ignition timing.

PBIB1287E

Method B1. Remove No. 1 ignition coil.

PBIB1092E

2.

Connect No. 1 ignition coil and No. 1 spark plug with suitable high-tension wire as shown, and attach timing light clamp to this wire.

PBIB1097E

EC-30

BASIC SERVICE PROCEDUREA

EC

CSEF166Y

3.

Check ignition timing.

D

E

F

GPBIB1098E

Idle Speed/Ignition Timing/Idle Mixture Ratio AdjustmentPREPARATION1.

ABS009AR

H

2. 3. 4. 5. 6.

Make sure that the following parts are in good order. q Battery q Ignition system q Engine oil and coolant levels q Fuses q ECM harness connector q Vacuum hoses q Air intake system (Oil filler cap, oil level gauge, etc.) q Fuel pressure q Engine compression q Throttle valve q Evaporative emission system On air conditioner equipped models, checks should be carried out while the air conditioner is OFF. On automatic transmission equipped models, when checking idle rpm, ignition timing and mixture ratio, checks should be carried out while shift lever is in N position. When measuring CO percentage, insert probe more than 40 cm (15.7 in) into tail pipe. Turn off headlamp, heater blower, rear window defogger. Keep front wheels pointed straight ahead.

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EC-31

BASIC SERVICE PROCEDUREOVERALL INSPECTION SEQUENCE

PBIB1054E

EC-32

BASIC SERVICE PROCEDUREINSPECTION PROCEDUREA

1. INSPECTION START1. 2.

3.

4.

Check service records for any recent repairs that may indicate a related malfunction, or a current need for EC scheduled maintenance. Open engine hood and check the following: Harness connectors for improper connections C Wiring harness for improper connections, pinches and cut Vacuum hoses for splits, kinks and improper connections Hoses and ducts for leaks D Air cleaner clogging Gasket Confirm that electrical or mechanical loads are not applied. E Head lamp switch is OFF. SEF983U Air conditioner switch is OFF. F Rear window defogger switch is OFF. Steering wheel is in the straight-ahead position, etc. Start engine and warm it up until engine coolant temperature G indicator points the middle of gauge. Ensure engine stays below 1,000 rpm.H

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SEF976U

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5.

Run engine at about 2,000 rpm for about 2 minutes under noload. 6. Make sure that no DTC is displayed with CONSULT-II or GST. OK or NG OK >> GO TO 3. NG >> GO TO 2.

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MSEF977U

2. REPAIR OR REPLACERepair or replace components as necessary according to corresponding Diagnostic Procedure. >> GO TO 3.

EC-33

BASIC SERVICE PROCEDURE

3. CHECK TARGET IDLE SPEED1. 2. With CONSULT-II Run engine at about 2,000 rpm for about 2 minutes under no-load. Rev engine (2,000 to 3,000 rpm) two or three times under noload, then run engine at idle speed for about 1 minute.

SEF978U

3.

Read idle speed in DATA MONITOR mode with CONSULT-II. A/T: M/T: 650 50 rpm (in P or N position) 650 50 rpm (in N position)

SEF058Y

Without CONSULT-II Run engine at about 2,000 rpm for about 2 minutes under no-load. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed for about 1 minute. 3. Check idle speed. 1. 2. A/T: M/T: 650 50 rpm (in P or N position) 650 50 rpm (in N position)

OK or NG OK >> GO TO 10. NG >> GO TO 4.

4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING1. 2. Stop engine. Perform EC-42, "Accelerator Pedal Released Position Learning" . >> GO TO 5.

5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNINGPerform EC-42, "Throttle Valve Closed Position Learning" . >> GO TO 6.

EC-34

BASIC SERVICE PROCEDURE

6. PERFORM IDLE AIR VOLUME LEARNINGPerform EC-42, "Idle Air Volume Learning" . Is Idle Air Volume Learning carried out successfully? Yes or No Yes >> GO TO 7. No >> 1. Follow the instruction of Idle Air Volume Learning. 2. GO TO 4.

A

EC

C

7. CHECK TARGET IDLE SPEED AGAINWith CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Read idle speed in DATA MONITOR mode with CONSULT-II. A/T: M/T: 650 50 rpm (in P or N position) 650 50 rpm (in N position)D E

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Without CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Check idle speed. A/T: M/T: 650 50 rpm (in P or N position) 650 50 rpm (in N position)

G

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OK or NG OK >> GO TO 10. NG >> GO TO 8.

I

8. DETECT MALFUNCTIONING PARTCheck the following. q Check camshaft position sensor (PHASE) and circuit. Refer to EC-298 . q Check crankshaft position sensor (POS) and circuit. Refer to EC-292 . OK or NG OK >> GO TO 9. NG >> 1. Repair or replace. 2. GO TO 4.J

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9. CHECK ECM FUNCTION1. 2. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.) Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to BL-150, "ECM Re-communicating Function" . >> GO TO 4.

M

EC-35

BASIC SERVICE PROCEDURE

10. CHECK IGNITION TIMING1. 2. Run engine at idle. Check ignition timing with a timing light. A/T: M/T: 15 5 BTDC (in P or N position) 15 5 BTDC (in N position)

OK or NG OK (With CONSULT-II)>>GO TO 19. OK (Without CONSULT-II)>>GO TO 20. NG >> GO TO 11.PBIB1098E

11. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING1. 2. Stop engine. Perform EC-42, "Accelerator Pedal Released Position Learning" . >> GO TO 12.

12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNINGPerform EC-42, "Throttle Valve Closed Position Learning" . >> GO TO 13.

13. PERFORM IDLE AIR VOLUME LEARNINGPerform EC-42, "Idle Air Volume Learning" . Is Idle Air Volume Learning carried out successfully? Yes or No Yes >> GO TO 14. No >> 1. Follow the instruction of Idle Air Volume Learning. 2. GO TO 4.

14. CHECK TARGET IDLE SPEED AGAINWith CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Read idle speed in DATA MONITOR mode with CONSULT-II. A/T: M/T: 650 50 rpm (in P or N position) 650 50 rpm (in N position)

Without CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Check idle speed. A/T: M/T: 650 50 rpm (in P or N position) 650 50 rpm (in N position)

OK or NG OK >> GO TO 15. NG >> GO TO 17.

EC-36

BASIC SERVICE PROCEDURE

15. CHECK IGNITION TIMING AGAIN1. 2. Run engine at idle. Check ignition timing with a timing light. A/T: M/T: 15 5 BTDC (in P or N position) 15 5 BTDC (in N position