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ENGINE CONTROL SYSTEM GI
SECTION EC MA
EM
LC
CONTENTS FE
QG18DE (EXC CALIF CA) Idle Air Volume Learning ...........................................83
CL
ON BOARD DIAGNOSTIC SYSTEM
TROUBLE DIAGNOSIS - INDEX ..................................22
DESCRIPTION ...............................................................85 MT
Alphabetical & P No. Index for DTC .........................22
Introduction ................................................................85
PRECAUTIONS .............................................................28
Two Trip Detection Logic ...........................................85
Supplemental Restraint System (SRS) AIR
Emission-related Diagnostic Information ...................86 AT
BAG and SEAT BELT PRE-TENSIONER.............28
Malfunction Indicator Lamp (MIL)............................100
Precautions for On Board Diagnostic (OBD)
OBD System Operation Chart .................................102
System of Engine and A/T.........................................28
CONSULT-II .............................................................107
AX
Precautions ................................................................29
Generic Scan Tool (GST) ........................................121
Wiring Diagrams and Trouble Diagnosis...................31
TROUBLE DIAGNOSIS - INTRODUCTION................123 SU
PREPARATION .............................................................32
Introduction ..............................................................123
Special Service Tools ................................................32
Work Flow................................................................125
Commercial Service Tools .........................................32
ENGINE AND EMISSION CONTROL OVERALL
TROUBLE DIAGNOSIS - BASIC INSPECTION .........127 BR
Basic Inspection.......................................................127
SYSTEM.........................................................................34
TROUBLE DIAGNOSIS - GENERAL
Engine Control Component Parts Location...............34 ST
DESCRIPTION .............................................................143
Circuit Diagram ..........................................................39
DTC Inspection Priority Chart..................................143
System Diagram ........................................................41
Fail-safe Chart .........................................................144
Vacuum Hose Drawing ..............................................42 RS
Symptom Matrix Chart.............................................145
System Chart .............................................................43
CONSULT-II Reference Value in Data Monitor
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION ...............................................44
Mode ........................................................................149 BT
Major Sensor Reference Graph in Data Monitor
Multiport Fuel Injection (MFI) System .......................44
Mode ........................................................................152
Distributor Ignition (DI) System .................................46 HA
ECM Terminals and Reference Value .....................154
Air Conditioning Cut Control......................................47
TROUBLE DIAGNOSIS - SPECIFICATION
Fuel Cut Control (at no load & high engine
VALUE..........................................................................163
speed) ........................................................................48
Description ...............................................................163
SC
Evaporative Emission System ...................................48
Diagnostic Procedure ..............................................164
On Board Refueling Vapor Recovery (ORVR) ..........55
TROUBLE DIAGNOSIS FOR INTERMITTENT EL
Positive Crankcase Ventilation ..................................65
INCIDENT.....................................................................167
BASIC SERVICE PROCEDURE ...................................67
Description ...............................................................167
Fuel Pressure Release ..............................................67
Diagnostic Procedure ..............................................167 IDX
Fuel Pressure Check .................................................67
TROUBLE DIAGNOSIS FOR POWER .......................168
Fuel Pressure Regulator Check ................................68
Main Power Supply and Ground Circuit..................168
Injector .......................................................................68
DTC P0100 MASS AIR FLOW SENSOR ...................174
How to Check Idle Speed and Ignition Timing..........69
Component Description ...........................................174
Idle Speed/Ignition Timing/Idle Mixture Ratio
CONSULT-II Reference Value in Data Monitor
Adjustment .................................................................71
Mode ........................................................................174
CONTENTS (Cont'd)
On Board Diagnosis Logic.......................................174 CONSULT-II Reference Value in Data Monitor
DTC Confirmation Procedure ..................................175 Mode ........................................................................213
Overall Function Check ...........................................177 On Board Diagnosis Logic.......................................213
Wiring Diagram ........................................................178 DTC Confirmation Procedure ..................................214
Diagnostic Procedure ..............................................179 Overall Function Check ...........................................214
Component Inspection.............................................182 Wiring Diagram ........................................................216
DTC P0105 ABSOLUTE PRESSURE.........................183 Diagnostic Procedure ..............................................218
Component Description ...........................................183 Component Inspection.............................................220
On Board Diagnosis Logic.......................................183 DTC P0131, P0151 HEATED OXYGEN SENSOR 1
DTC Confirmation Procedure ..................................183 (FRONT) (BANK 1)/(BANK 2) (LEAN SHIFT
Diagnostic Procedure ..............................................184 MONITORING) .............................................................222
DTC P0110 INTAKE AIR TEMPERATURE Component Description ...........................................222
SENSOR ......................................................................185 CONSULT-II Reference Value in Data Monitor
Component Description ...........................................185 Mode ........................................................................222
On Board Diagnosis Logic.......................................185 On Board Diagnosis Logic.......................................222
DTC Confirmation Procedure ..................................185 DTC Confirmation Procedure ..................................223
Wiring Diagram ........................................................187 Overall Function Check ...........................................223
Diagnostic Procedure ..............................................188 Diagnostic Procedure ..............................................224
Component Inspection.............................................190 Component Inspection.............................................226
DTC P0115 ENGINE COOLANT TEMPERATURE DTC P0132, P0152 HEATED OXYGEN SENSOR 1
SENSOR (ECTS) (CIRCUIT) .......................................191 (FRONT) (BANK 1)/(BANK 2) (RICH SHIFT
Component Description ...........................................191 MONITORING) .............................................................228
CONSULT-II Reference Value in Data Monitor Component Description ...........................................228
Mode ........................................................................191 CONSULT-II Reference Value in Data Monitor
On Board Diagnosis Logic.......................................191 Mode ........................................................................228
DTC Confirmation Procedure ..................................192 On Board Diagnosis Logic.......................................228
Wiring Diagram ........................................................193 DTC Confirmation Procedure ..................................229
Diagnostic Procedure ..............................................194 Overall Function Check ...........................................229
Component Inspection.............................................195 Diagnostic Procedure ..............................................231
DTC P0120 THROTTLE POSITION SENSOR ...........196 Component Inspection.............................................233
Component Description ...........................................196 DTC P0133, P0153 HEATED OXYGEN SENSOR 1
CONSULT-II Reference Value in Data Monitor (FRONT) (BANK 1)/(BANK 2) (RESPONSE
Mode ........................................................................196 MONITORING) .............................................................235
On Board Diagnosis Logic.......................................197 Component Description ...........................................235
DTC Confirmation Procedure ..................................197 CONSULT-II Reference Value in Data Monitor
Wiring Diagram ........................................................201 Mode ........................................................................235
Diagnostic Procedure ..............................................202 On Board Diagnosis Logic.......................................235
Component Inspection.............................................206 DTC Confirmation Procedure ..................................236
DTC P0125 ENGINE COOLANT TEMPERATURE Overall Function Check ...........................................236
(ECT) SENSOR............................................................208 Wiring Diagram ........................................................238
Component Description ...........................................208 Diagnostic Procedure ..............................................240
CONSULT-II Reference Value in Data Monitor Component Inspection.............................................244
Mode ........................................................................208 DTC P0134, P0154 HEATED OXYGEN SENSOR 1
On Board Diagnosis Logic.......................................208 (FRONT) (BANK 1)/(BANK 2) (HIGH VOLTAGE)......246
DTC Confirmation Procedure ..................................209 Component Description ...........................................246
Wiring Diagram ........................................................210 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................211 Mode ........................................................................246
Component Inspection.............................................212 On Board Diagnosis Logic.......................................246
DTC P0130, P0150 HEATED OXYGEN SENSOR 1 DTC Confirmation Procedure ..................................247
(FRONT) (BANK 1)/(BANK 2) (CIRCUIT) ..................213 Wiring Diagram ........................................................248
Component Description ...........................................213 Diagnostic Procedure ..............................................250
Component Inspection.............................................252
EC-2
CONTENTS (Cont'd)
DTC P0135, P0155 HEATED OXYGEN SENSOR 1 DTC Confirmation Procedure ..................................287 GI
HEATER (FRONT) (BANK 1)/(BANK 2).....................254 Overall Function Check ...........................................288
Description ...............................................................254 Wiring Diagram ........................................................289
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................291 MA
Mode ........................................................................254 Component Inspection.............................................293
On Board Diagnosis Logic.......................................254 DTC P0141, P0161 HEATED OXYGEN SENSOR 2
DTC Confirmation Procedure ..................................254 HEATER (REAR) (BANK 1)/(BANK 2).......................295
EM
Wiring Diagram ........................................................256 Description ...............................................................295
Diagnostic Procedure ..............................................258 CONSULT-II Reference Value in Data Monitor LC
Component Inspection.............................................259 Mode ........................................................................295
DTC P0137, P0157 HEATED OXYGEN SENSOR 2 On Board Diagnosis Logic.......................................295
(REAR) (BANK 1)/(BANK 2) (MIN. VOLTAGE DTC Confirmation Procedure ..................................295
MONITORING) .............................................................260 Wiring Diagram ........................................................297
Component Description ...........................................260 Diagnostic Procedure ..............................................299
CONSULT-II Reference Value in Data Monitor Component Inspection.............................................300 FE
Mode ........................................................................260 DTC P0171, P0174 FUEL INJECTION SYSTEM
On Board Diagnosis Logic.......................................260 FUNCTION (BANK 1)/(BANK 2) (LEAN SIDE)..........301 CL
DTC Confirmation Procedure ..................................261 On Board Diagnosis Logic.......................................301
Overall Function Check ...........................................261 DTC Confirmation Procedure ..................................301
Wiring Diagram ........................................................262 Wiring Diagram ........................................................303 MT
Diagnostic Procedure ..............................................264 Diagnostic Procedure ..............................................305
Component Inspection.............................................267 DTC P0172, P0175 FUEL INJECTION SYSTEM
DTC P0138, P0158 HEATED OXYGEN SENSOR 2 FUNCTION (BANK 1)/(BANK 2) (RICH SIDE)...........310 AT
(REAR) (BANK 1)/(BANK 2) (MAX. VOLTAGE On Board Diagnosis Logic.......................................310
MONITORING) .............................................................269 DTC Confirmation Procedure ..................................310
AX
Component Description ...........................................269 Wiring Diagram ........................................................312
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................314
Mode ........................................................................269 DTC P0180 FUEL TANK TEMPERATURE SU
On Board Diagnosis Logic.......................................269 SENSOR ......................................................................319
DTC Confirmation Procedure ..................................270 Component Description ...........................................319
Overall Function Check ...........................................270 On Board Diagnosis Logic.......................................319 BR
Wiring Diagram ........................................................271 DTC Confirmation Procedure ..................................319
Diagnostic Procedure ..............................................273 Wiring Diagram ........................................................321
Component Inspection.............................................276 Diagnostic Procedure ..............................................322
ST
DTC P0139, P0159 HEATED OXYGEN SENSOR 2 Component Inspection.............................................323
(REAR) (BANK 1)/(BANK 2) (RESPONSE DTC P0217 COOLANT OVERTEMPERATURE RS
MONITORING) .............................................................278 ENRICHMENT PROTECTION.....................................324
Component Description ...........................................278 System Description..................................................324
CONSULT-II Reference Value in Data Monitor CONSULT-II Reference Value in Data Monitor BT
Mode ........................................................................278 Mode ........................................................................324
On Board Diagnosis Logic.......................................278 On Board Diagnosis Logic.......................................325
DTC Confirmation Procedure ..................................279 Possible Cause........................................................325 HA
Overall Function Check ...........................................279 Overall Function Check ...........................................326
Wiring Diagram ........................................................280 Wiring Diagram - Early Production..........................329
SC
Diagnostic Procedure ..............................................282 Wiring Diagram - Late Production ...........................330
Component Inspection.............................................285 Diagnostic Procedure ..............................................331
DTC P0140, P0160 HEATED OXYGEN SENSOR 2 Main 12 Causes of Overheating..............................342 EL
(REAR) (BANK 1)/(BANK 2) (HIGH VOLTAGE)........287 DTC P0300 - P0304 NO. 4 - 1 CYLINDER
Component Description ...........................................287 MISFIRE, MULTIPLE CYLINDER MISFIRE ...............343
CONSULT-II Reference Value in Data Monitor On Board Diagnosis Logic.......................................343 IDX
Mode ........................................................................287 DTC Confirmation Procedure ..................................343
On Board Diagnosis Logic.......................................287 Diagnostic Procedure ..............................................344
EC-3
CONTENTS (Cont'd)
DTC P0325 KNOCK SENSOR (KS) ...........................350 Diagnostic Procedure ..............................................387
Component Description ...........................................350 DTC P0443 EVAP CANISTER PURGE VOLUME
DTC Confirmation Procedure ..................................350 CONTROL SOLENOID VALVE (CIRCUIT).................400
Wiring Diagram ........................................................351 Description ...............................................................400
Diagnostic Procedure ..............................................352 CONSULT-II Reference Value in Data Monitor
Component Inspection.............................................353 Mode ........................................................................400
DTC P0335 CRANKSHAFT POSITION SENSOR On Board Diagnosis Logic.......................................400
(CKPS) (POS) ..............................................................354 Possible Cause........................................................400
Component Description ...........................................354 DTC Confirmation Procedure ..................................400
On Board Diagnosis Logic.......................................354 Wiring Diagram ........................................................402
DTC Confirmation Procedure ..................................354 Diagnostic Procedure ..............................................403
Wiring Diagram ........................................................355 DTC P0446 EVAPORATIVE EMISSION (EVAP)
Diagnostic Procedure ..............................................356 CANISTER VENT CONTROL VALVE (CIRCUIT) ......406
Component Inspection.............................................358 Component Description ...........................................406
DTC P0340 CAMSHAFT POSITION SENSOR CONSULT-II Reference Value in Data Monitor
(CMPS) (PHASE).........................................................359 Mode ........................................................................406
Component Description ...........................................359 On Board Diagnosis Logic.......................................406
On Board Diagnosis Logic.......................................359 Possible Cause........................................................406
DTC Confirmation Procedure ..................................359 DTC Confirmation Procedure ..................................407
Wiring Diagram ........................................................360 Wiring Diagram ........................................................408
Diagnostic Procedure ..............................................361 Diagnostic Procedure ..............................................409
Component Inspection.............................................364 DTC P0450 EVAPORATIVE EMISSION (EVAP)
DTC P0400 EGR FUNCTION (CLOSE)......................365 CONTROL SYSTEM PRESSURE SENSOR ..............413
Description ...............................................................365 Component Description ...........................................413
CONSULT-II Reference Value in Data Monitor CONSULT-II Reference Value in Data Monitor
Mode ........................................................................366 Mode ........................................................................413
On Board Diagnosis Logic.......................................366 On Board Diagnosis Logic.......................................413
Possible Cause........................................................366 Possible Cause........................................................413
DTC Confirmation Procedure ..................................367 DTC Confirmation Procedure ..................................414
Wiring Diagram ........................................................369 Wiring Diagram ........................................................415
Diagnostic Procedure ..............................................370 Diagnostic Procedure ..............................................416
DTC P0403 EGR VOLUME CONTROL VALVE DTC P0455 EVAP CONTROL SYSTEM (GROSS
(CIRCUIT).....................................................................374 LEAK)...........................................................................425
Description ...............................................................374 On Board Diagnosis Logic.......................................425
CONSULT-II Reference Value in Data Monitor Possible Cause........................................................425
Mode ........................................................................375 DTC Confirmation Procedure ..................................427
On Board Diagnosis Logic.......................................375 Diagnostic Procedure ..............................................428
Possible Cause........................................................375 DTC P0460 FUEL LEVEL SENSOR FUNCTION
DTC Confirmation Procedure ..................................375 (SLOSH).......................................................................438
Wiring Diagram ........................................................377 Component Description ...........................................438
Diagnostic Procedure ..............................................378 On Board Diagnostic Logic......................................438
DTC P0420, P0430 THREE WAY CATALYST Possible Cause........................................................438
FUNCTION ...................................................................381 DTC Confirmation Procedure ..................................438
On Board Diagnosis Logic.......................................381 Wiring Diagram ........................................................439
DTC Confirmation Procedure ..................................381 Diagnostic Procedure ..............................................440
Overall Function Check ...........................................382 DTC P0461 FUEL LEVEL SENSOR FUNCTION .......442
Diagnostic Procedure ..............................................382 Component Description ...........................................442
DTC P0440 EVAP CONTROL SYSTEM (SMALL On Board Diagnostic Logic......................................442
LEAK) (NEGATIVE PRESSURE)................................385 Possible Cause........................................................442
On Board Diagnosis Logic.......................................385 Overall Function Check ...........................................442
Possible Cause........................................................385 DTC P0464 FUEL LEVEL SENSOR CIRCUIT ...........444
DTC Confirmation Procedure ..................................386 Component Description ...........................................444
EC-4
CONTENTS (Cont'd)
On Board Diagnostic Logic......................................444 DTC P1111 INTAKE VALVE TIMING CONTROL GI
Possible Cause........................................................444 SOLENOID VALVE......................................................480
DTC Confirmation Procedure ..................................444 Component Description ...........................................480
Wiring Diagram ........................................................445 Operation .................................................................480 MA
Diagnostic Procedure ..............................................446 CONSULT-II Reference Value in Data Monitor
DTC P0500 VEHICLE SPEED SENSOR (VSS) .........448 Mode ........................................................................480
Component Description ...........................................448 On Board Diagnosis Logic.......................................480
EM
On Board Diagnosis Logic.......................................448 DTC Confirmation Procedure ..................................480
DTC Confirmation Procedure ..................................448 Wiring Diagram ........................................................482 LC
Overall Function Check ...........................................449 Diagnostic Procedure ..............................................483
Wiring Diagram ........................................................450 Component Inspection.............................................484
Diagnostic Procedure ..............................................451 DTC P1126 THERMOSTAT FUNCTION.....................485
DTC P0505 IDLE AIR CONTROL VALVE (IACV) On Board Diagnosis Logic.......................................485
- AUXILIARY AIR CONTROL (AAC) VALVE .............452 Possible Cause........................................................485
Description ...............................................................452 DTC Confirmation Procedure ..................................485 FE
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................486
Mode ........................................................................453 DTC P1130 SWIRL CONTROL VALVE CONTROL CL
On Board Diagnosis Logic.......................................453 SOLENOID VALVE......................................................487
DTC Confirmation Procedure ..................................453 Description ...............................................................487
Wiring Diagram ........................................................455 CONSULT-II Reference Value in Data Monitor MT
Diagnostic Procedure ..............................................456 Mode ........................................................................488
DTC P0510 CLOSED THROTTLE POSITION On Board Diagnosis Logic.......................................488
SWITCH .......................................................................461 Possible Cause........................................................488 AT
Component Description ...........................................461 DTC Confirmation Procedure ..................................489
CONSULT-II Reference Value in Data Monitor Wiring Diagram ........................................................491
AX
Mode ........................................................................461 Diagnostic Procedure ..............................................492
On Board Diagnosis Logic.......................................461 DTC P1131 SWIRL CONTROL VALVE CONTROL
DTC Confirmation Procedure ..................................461 SOLENOID VALVE (CIRCUIT)....................................510 SU
Overall Function Check ...........................................462 Component Description ...........................................510
Wiring Diagram ........................................................463 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................464 Mode ........................................................................510 BR
DTC P0600 A/T CONTROL.........................................469 On Board Diagnosis Logic.......................................510
System Description..................................................469 Possible Cause........................................................510
On Board Diagnosis Logic.......................................469 DTC Confirmation Procedure ..................................510
ST
DTC Confirmation Procedure ..................................469 Wiring Diagram ........................................................512
Wiring Diagram ........................................................470 Diagnostic Procedure ..............................................513 RS
Diagnostic Procedure ..............................................471 DTC P1140 INTAKE VALVE TIMING CONTROL
DTC P0605 ECM .........................................................472 POSITION SENSOR ....................................................516
Component Description ...........................................472 Component Description ...........................................516 BT
On Board Diagnosis Logic.......................................472 On Board Diagnosis Logic.......................................516
DTC Confirmation Procedure ..................................472 DTC Confirmation Procedure ..................................516
Diagnostic Procedure ..............................................473 Wiring Diagram ........................................................517 HA
DTC P1110 INTAKE VALVE TIMING CONTROL.......474 Diagnostic Procedure ..............................................518
Description ...............................................................474 Component Inspection.............................................520
SC
CONSULT-II Reference Value in Data Monitor DTC P1148, P1168 CLOSED LOOP CONTROL
Mode ........................................................................475 (BANK 1)/(BANK 2).....................................................521
On Board Diagnosis Logic.......................................475 On Board Diagnosis Logic.......................................521 EL
DTC Confirmation Procedure ..................................475 DTC Confirmation Procedure ..................................521
Wiring Diagram ........................................................477 Overall Function Check ...........................................522
Diagnostic Procedure ..............................................478 Diagnostic Procedure ..............................................522 IDX
Component Inspection.............................................479 DTC P1165 SWIRL CONTROL VALVE CONTROL
VACUUM CHECK SWITCH.........................................523
EC-5
CONTENTS (Cont'd)
Component Description ...........................................523 DTC P1440 EVAP CONTROL SYSTEM (SMALL
CONSULT-II Reference Value in Data Monitor LEAK) (POSITIVE PRESSURE) .................................577
Mode ........................................................................523 On Board Diagnosis Logic.......................................577
On Board Diagnosis Logic.......................................523 Possible Cause........................................................577
Possible Cause........................................................523 DTC Confirmation Procedure ..................................578
DTC Confirmation Procedure ..................................524 Diagnostic Procedure ..............................................578
Wiring Diagram ........................................................525 DTC P1441 EVAPORATIVE EMISSION (EVAP)
Diagnostic Procedure ..............................................526 CONTROL SYSTEM (VERY SMALL LEAK) ..............579
DTC P1217 ENGINE OVER TEMPERATURE On Board Diagnosis Logic.......................................579
(OVERHEAT) ...............................................................530 DTC Confirmation Procedure ..................................580
System Description..................................................530 Overall Function Check ...........................................581
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................582
Mode ........................................................................530 DTC P1444 EVAP CANISTER PURGE VOLUME
On Board Diagnosis Logic.......................................531 CONTROL SOLENOID VALVE...................................595
Overall Function Check ...........................................532 Description ...............................................................595
Wiring Diagram - Early Production..........................533 CONSULT-II Reference Value in Data Monitor
Wiring Diagram - Late Production ...........................534 Mode ........................................................................595
Diagnostic Procedure ..............................................535 On Board Diagnosis Logic.......................................596
Main 12 Causes of Overheating..............................546 Possible Cause........................................................596
Component Inspection.............................................546 DTC Confirmation Procedure ..................................596
DTC P1320 IGNITION SIGNAL...................................547 Wiring Diagram ........................................................598
Component Description ...........................................547 Diagnostic Procedure ..............................................599
On Board Diagnosis Logic.......................................547 DTC P1446 EVAPORATIVE EMISSION (EVAP)
Possible Cause........................................................547 CANISTER VENT CONTROL VALVE (CLOSE).........607
DTC Confirmation Procedure ..................................547 Component Description ...........................................607
Wiring Diagram ........................................................548 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................551 Mode ........................................................................607
DTC P1336 CRANKSHAFT POSITION SENSOR On Board Diagnosis Logic.......................................607
(CKPS) (POS) (COG) ..................................................558 Possible Cause........................................................607
Component Description ...........................................558 DTC Confirmation Procedure ..................................608
On Board Diagnosis Logic.......................................558 Wiring Diagram ........................................................609
DTC Confirmation Procedure ..................................558 Diagnostic Procedure ..............................................610
Wiring Diagram ........................................................559 DTC P1447 EVAPORATIVE EMISSION (EVAP)
Diagnostic Procedure ..............................................560 CONTROL SYSTEM PURGE FLOW
Component Inspection.............................................562 MONITORING ..............................................................615
DTC P1401 EGR TEMPERATURE SENSOR.............563 System Description..................................................615
Component Description ...........................................563 On Board Diagnosis Logic.......................................615
On Board Diagnosis Logic.......................................563 Possible Cause........................................................615
Possible Cause........................................................563 DTC Confirmation Procedure ..................................616
DTC Confirmation Procedure ..................................564 Overall Function Check ...........................................617
Wiring Diagram ........................................................566 Diagnostic Procedure ..............................................618
Diagnostic Procedure ..............................................567 DTC P1448 EVAPORATIVE EMISSION (EVAP)
DTC P1402 EGR FUNCTION (OPEN) ........................570 CANISTER VENT CONTROL VALVE (OPEN)...........627
Description ...............................................................570 Component Description ...........................................627
CONSULT-II Reference Value in Data Monitor CONSULT-II Reference Value in Data Monitor
Mode ........................................................................571 Mode ........................................................................627
On Board Diagnosis Logic.......................................571 On Board Diagnosis Logic.......................................627
Possible Cause........................................................571 Possible Cause........................................................627
DTC Confirmation Procedure ..................................572 DTC Confirmation Procedure ..................................628
Wiring Diagram ........................................................573 Overall Function Check ...........................................629
Diagnostic Procedure ..............................................574 Wiring Diagram ........................................................630
Diagnostic Procedure ..............................................631
EC-6
CONTENTS (Cont'd)
DTC P1464 FUEL LEVEL SENSOR CIRCUIT START SIGNAL...........................................................669 GI
(GROUND SIGNAL) ....................................................636 CONSULT-II Reference Value in Data Monitor
Component Description ...........................................636 Mode ........................................................................669
On Board Diagnostic Logic......................................636 Wiring Diagram ........................................................670 MA
Possible Cause........................................................636 Diagnostic Procedure ..............................................671
DTC Confirmation Procedure ..................................636 FUEL PUMP.................................................................673
Wiring Diagram ........................................................637 System Description..................................................673
EM
Diagnostic Procedure ..............................................638 Component Description ...........................................673
DTC P1490 VACUUM CUT VALVE BYPASS CONSULT-II Reference Value in Data Monitor LC
VALVE (CIRCUIT)........................................................639 Mode ........................................................................673
Description ...............................................................639 Wiring Diagram ........................................................674
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................675
Mode ........................................................................639 Component Inspection.............................................678
On Board Diagnosis Logic.......................................639 POWER STEERING OIL PRESSURE SWITCH.........679
Possible Cause........................................................639 Component Description ...........................................679 FE
DTC Confirmation Procedure ..................................639 CONSULT-II Reference Value in Data Monitor
Wiring Diagram ........................................................641 Mode ........................................................................679 CL
Diagnostic Procedure ..............................................642 Wiring Diagram ........................................................680
DTC P1491 VACUUM CUT VALVE BYPASS Diagnostic Procedure ..............................................681
VALVE..........................................................................645 Component Inspection.............................................682 MT
Description ...............................................................645 REFRIGERANT PRESSURE SENSOR ......................683
CONSULT-II Reference Value in Data Monitor Description ...............................................................683
Mode ........................................................................645 Wiring Diagram ........................................................684 AT
On Board Diagnosis Logic.......................................645 Diagnostic Procedure ..............................................685
Possible Cause........................................................646 ELECTRICAL LOAD SIGNAL.....................................688
AX
DTC Confirmation Procedure ..................................646 CONSULT-II Reference Value in Data Monitor
Overall Function Check ...........................................647 Mode ........................................................................688
Diagnostic Procedure ..............................................647 Wiring Diagram ........................................................689 SU
DTC P1605 A/T DIAGNOSIS COMMUNICATION Diagnostic Procedure ..............................................691
LINE .............................................................................655 MIL & DATA LINK CONNECTORS ............................697
System Description..................................................655 Wiring Diagram ........................................................697 BR
On Board Diagnosis Logic.......................................655 SERVICE DATA AND SPECIFICATIONS (SDS) .......698
DTC Confirmation Procedure ..................................655 Fuel Pressure Regulator..........................................698
Wiring Diagram ........................................................656 Idle Speed and Ignition Timing................................698
ST
Diagnostic Procedure ..............................................657 Mass Air Flow Sensor..............................................698
DTC P1706 PARK/NEUTRAL POSITION (PNP) Engine Coolant Temperature Sensor ......................698 RS
SWITCH .......................................................................658 EGR Temperature Sensor .......................................698
Component Description ...........................................658 Fuel Pump ...............................................................698
CONSULT-II Reference Value in Data Monitor IACV-AAC Valve ......................................................698 BT
Mode ........................................................................658 Injector .....................................................................698
On Board Diagnosis Logic.......................................658 Resistor....................................................................699
DTC Confirmation Procedure ..................................658 Throttle Position Sensor ..........................................699 HA
Overall Function Check ...........................................659 Heated Oxygen Sensor 1 Heater (Front) ................699
Wiring Diagram ........................................................660 Calculated Load Value.............................................699
SC
Diagnostic Procedure For M/T Models....................661 Intake Air Temperature Sensor................................699
Diagnostic Procedure For A/T Models ....................663 EVAP Canister Purge Volume Control Valve ..........699
INJECTOR ...................................................................664 Heated Oxygen Sensor 2 Heater (Rear).................699 EL
Component Description ...........................................664 Crankshaft Position Sensor (POS)..........................699
CONSULT-II Reference Value in Data Monitor Fuel Tank Temperature Sensor ...............................699
Mode ........................................................................664 IDX
Wiring Diagram ........................................................665 QG18DE (CALIF CA)
Diagnostic Procedure ..............................................666
TROUBLE DIAGNOSIS - INDEX ................................700
EC-7
CONTENTS (Cont'd)
Alphabetical & P No. Index for DTC .......................700 Fail-safe Chart .........................................................814
PRECAUTIONS ...........................................................706 Symptom Matrix Chart.............................................815
Supplemental Restraint System (SRS) AIR CONSULT-II Reference Value in Data Monitor
BAG and SEAT BELT PRE-TENSIONER...........706 Mode ........................................................................819
Precautions for On Board Diagnostic (OBD) Major Sensor Reference Graph in Data Monitor
System of Engine and A/T.......................................706 Mode ........................................................................822
Precautions ..............................................................707 ECM Terminals and Reference Value .....................824
Wiring Diagrams and Trouble Diagnosis.................709 TROUBLE DIAGNOSIS - SPECIFICATION
PREPARATION ...........................................................710 VALUE..........................................................................834
Special Service Tools ..............................................710 Description ...............................................................834
Commercial Service Tools .......................................711 Testing Condition .....................................................834
ENGINE AND EMISSION CONTROL OVERALL Inspection Procedure...............................................834
SYSTEM.......................................................................712 Diagnostic Procedure ..............................................835
Engine Control Component Parts Location.............712 TROUBLE DIAGNOSIS FOR INTERMITTENT
Circuit Diagram ........................................................717 INCIDENT.....................................................................838
System Diagram ......................................................719 Description ...............................................................838
System Chart ...........................................................720 Diagnostic Procedure ..............................................838
ENGINE AND EMISSION BASIC CONTROL TROUBLE DIAGNOSIS FOR POWER SUPPLY........839
SYSTEM DESCRIPTION .............................................721 Main Power Supply and Ground Circuit..................839
Multiport Fuel Injection (MFI) System .....................721 DTC P0100 MASS AIR FLOW SENSOR (MAFS)......846
Distributor Ignition (DI) System ...............................723 Component Description ...........................................846
Air Conditioning Cut Control....................................724 CONSULT-II Reference Value in Data Monitor
Fuel Cut Control (at no load & high engine ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo