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ENGINE CONTROL SYSTEM GI
SECTION EC MA
EM
LC
CONTENTS FE
KA24DE ON BOARD DIAGNOSTIC SYSTEM
CL
DESCRIPTION ...............................................................56
TROUBLE DIAGNOSIS - INDEX ..................................13
Introduction ................................................................56 MT
Alphabetical & P No. Index for DTC .........................13
Two Trip Detection Logic ...........................................56
PRECAUTIONS .............................................................17
Emission-related Diagnostic Information ...................57
Supplemental Restraint System (SRS) AIR
Malfunction Indicator Lamp (MIL)..............................69 AT
BAG and SEAT BELT PRE-TENSIONER.............17
OBD System Operation Chart ...................................73
Precautions for On Board Diagnostic (OBD)
CONSULT-II ...............................................................78
System of Engine and A/T.........................................17
Generic Scan Tool (GST) ..........................................89
TF
Engine Fuel & Emission Control System ..................18
TROUBLE DIAGNOSIS - INTRODUCTION..................91
Precautions ................................................................19
Introduction ................................................................91 PD
Wiring Diagrams and Trouble Diagnosis...................20
Work Flow..................................................................93
PREPARATION .............................................................21
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........95
Special Service Tools ................................................21
Commercial Service Tools .........................................21
Basic Inspection.........................................................95 AX
TROUBLE DIAGNOSIS - GENERAL
ENGINE AND EMISSION CONTROL OVERALL
DESCRIPTION .............................................................109
SYSTEM.........................................................................23 SU
DTC Inspection Priority Chart..................................109
Engine Control Component Parts Location...............23
Fail-safe Chart .........................................................110
Circuit Diagram ..........................................................25
Symptom Matrix Chart............................................. 111
System Diagram ........................................................26 BR
CONSULT-II Reference Value in Data Monitor
Vacuum Hose Drawing ..............................................27
Mode ........................................................................115
System Chart .............................................................28
ENGINE AND EMISSION BASIC CONTROL
Major Sensor Reference Graph in Data Monitor ST
Mode ........................................................................117
SYSTEM DESCRIPTION ...............................................29
ECM Terminals and Reference Value .....................120
Multiport Fuel Injection (MFI) System .......................29 RS
TROUBLE DIAGNOSIS FOR INTERMITTENT
Distributor Ignition (DI) System .................................31
INCIDENT.....................................................................128
Air Conditioning Cut Control......................................33
Description ...............................................................128
Fuel Cut Control (at no load & high engine
Diagnostic Procedure ..............................................128
BT
speed) ........................................................................33
TROUBLE DIAGNOSIS FOR POWER SUPPLY........129
Evaporative Emission System ...................................34
Main Power Supply and Ground Circuit..................129 HA
Positive Crankcase Ventilation ..................................39
DTC P0100 MASS AIR FLOW SENSOR (MAFS)......136
BASIC SERVICE PROCEDURE ...................................40
Component Description ...........................................136
Fuel Pressure Release ..............................................40
CONSULT-II Reference Value in Data Monitor SC
Fuel Pressure Check .................................................40
Mode ........................................................................136
Fuel Pressure Regulator Check ................................41
ECM Terminals and Reference Value .....................136
Injector .......................................................................41
On Board Diagnosis Logic.......................................137 EL
Fast Idle Cam (FIC)...................................................41
DTC Confirmation Procedure ..................................137
Idle Speed/Ignition Timing/Idle Mixture Ratio
Overall Function Check ...........................................139 IDX
Adjustment .................................................................42
Wiring Diagram ........................................................140
CONTENTS (Cont'd)
Diagnostic Procedure ..............................................141 DTC P0131 FRONT HEATED OXYGEN SENSOR
DTC P0105 ABSOLUTE PRESSURE SENSOR ........146 (FRONT HO2S) (LEAN SHIFT MONITORING) ..........198
Component Description ...........................................146 Component Description ...........................................198
On Board Diagnosis Logic.......................................146 CONSULT-II Reference Value in Data Monitor
DTC Confirmation Procedure ..................................147 Mode ........................................................................198
Overall Function Check ...........................................148 ECM Terminals and Reference Value .....................198
Wiring Diagram ........................................................149 On Board Diagnosis Logic.......................................199
Diagnostic Procedure ..............................................150 DTC Confirmation Procedure ..................................199
DTC P0110 INTAKE AIR TEMPERATURE Overall Function Check ...........................................200
SENSOR ......................................................................161 Diagnostic Procedure ..............................................200
Component Description ...........................................161 DTC P0132 FRONT HEATED OXYGEN SENSOR
On Board Diagnosis Logic.......................................161 (FRONT HO2S) (RICH SHIFT MONITORING) ...........205
DTC Confirmation Procedure ..................................162 Component Description ...........................................205
Wiring Diagram ........................................................163 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................164 Mode ........................................................................205
DTC P0115 ENGINE COOLANT TEMPERATURE ECM Terminals and Reference Value .....................205
SENSOR (ECTS) (CIRCUIT) .......................................167 On Board Diagnosis Logic.......................................206
Component Description ...........................................167 DTC Confirmation Procedure ..................................206
CONSULT-II Reference Value in Data Monitor Overall Function Check ...........................................207
Mode ........................................................................167 Diagnostic Procedure ..............................................207
On Board Diagnosis Logic.......................................167 DTC P0133 FRONT HEATED OXYGEN SENSOR
DTC Confirmation Procedure ..................................168 (FRONT HO2S) (RESPONSE MONITORING)............212
Wiring Diagram ........................................................169 Component Description ...........................................212
Diagnostic Procedure ..............................................170 CONSULT-II Reference Value in Data Monitor
DTC P0120 THROTTLE POSITION SENSOR ...........172 Mode ........................................................................212
Component Description ...........................................172 ECM Terminals and Reference Value .....................212
CONSULT-II Reference Value in Data Monitor On Board Diagnosis Logic.......................................213
Mode ........................................................................172 DTC Confirmation Procedure ..................................213
ECM Terminals and Reference Value .....................173 Overall Function Check ...........................................214
On Board Diagnosis Logic.......................................173 Wiring Diagram ........................................................215
DTC Confirmation Procedure ..................................174 Diagnostic Procedure ..............................................216
Wiring Diagram ........................................................177 DTC P0134 FRONT HEATED OXYGEN SENSOR
Diagnostic Procedure ..............................................178 (FRONT HO2S) (HIGH VOLTAGE).............................223
DTC P0125 ENGINE COOLANT TEMPERATURE Component Description ...........................................223
(ECT) SENSOR............................................................186 CONSULT-II Reference Value in Data Monitor
Component Description ...........................................186 Mode ........................................................................223
On Board Diagnosis Logic.......................................186 ECM Terminals and Reference Value .....................223
DTC Confirmation Procedure ..................................186 On Board Diagnosis Logic.......................................224
Wiring Diagram ........................................................187 DTC Confirmation Procedure ..................................224
Diagnostic Procedure ..............................................188 Wiring Diagram ........................................................225
DTC P0130 FRONT HEATED OXYGEN SENSOR Diagnostic Procedure ..............................................226
(FRONT HO2S) (CIRCUIT)..........................................190 DTC P0135 FRONT HEATED OXYGEN SENSOR
Component Description ...........................................190 HEATER.......................................................................230
CONSULT-II Reference Value in Data Monitor Description ...............................................................230
Mode ........................................................................190 CONSULT-II Reference Value in Data Monitor
ECM Terminals and Reference Value .....................190 Mode ........................................................................230
On Board Diagnosis Logic.......................................191 ECM Terminals and Reference Value .....................230
DTC Confirmation Procedure ..................................192 On Board Diagnosis Logic.......................................230
Overall Function Check ...........................................193 DTC Confirmation Procedure ..................................231
Wiring Diagram ........................................................194 Wiring Diagram ........................................................232
Diagnostic Procedure ..............................................195 Diagnostic Procedure ..............................................233
EC-2
CONTENTS (Cont'd)
DTC P0137 REAR HEATED OXYGEN SENSOR Wiring Diagram ........................................................275 GI
(REAR HO2S) (MIN. VOLTAGE MONITORING)........235 Diagnostic Procedure ..............................................276
Component Description ...........................................235 DTC P0171 FUEL INJECTION SYSTEM
CONSULT-II Reference Value in Data Monitor FUNCTION (LEAN SIDE) ............................................278 MA
Mode ........................................................................235 On Board Diagnosis Logic.......................................278
ECM Terminals and Reference Value .....................235 DTC Confirmation Procedure ..................................278
On Board Diagnosis Logic.......................................235 Wiring Diagram ........................................................280
EM
DTC Confirmation Procedure ..................................236 Diagnostic Procedure ..............................................281
Overall Function Check ...........................................237 DTC P0172 FUEL INJECTION SYSTEM LC
Wiring Diagram ........................................................238 FUNCTION (RICH SIDE) .............................................286
Diagnostic Procedure ..............................................239 On Board Diagnosis Logic.......................................286
DTC P0138 REAR HEATED OXYGEN SENSOR DTC Confirmation Procedure ..................................286
(REAR HO2S) (MAX. VOLTAGE MONITORING) ......245 Wiring Diagram ........................................................288
Component Description ...........................................245 Diagnostic Procedure ..............................................289
CONSULT-II Reference Value in Data Monitor DTC P0180 FUEL TANK TEMPERATURE FE
Mode ........................................................................245 SENSOR ......................................................................293
ECM Terminals and Reference Value .....................245 Component Description ...........................................293 CL
On Board Diagnosis Logic.......................................245 On Board Diagnosis Logic.......................................293
DTC Confirmation Procedure ..................................246 DTC Confirmation Procedure ..................................294
Overall Function Check ...........................................247 Wiring Diagram ........................................................295 MT
Wiring Diagram ........................................................248 Diagnostic Procedure ..............................................296
Diagnostic Procedure ..............................................249 DTC P0300 - P0304 NO. 4 - 1 CYLINDER
DTC P0139 REAR HEATED OXYGEN SENSOR MISFIRE, MULTIPLE CYLINDER MISFIRE ...............299 AT
(REAR HO2S) (RESPONSE MONITORING)..............255 On Board Diagnosis Logic.......................................299
Component Description ...........................................255 DTC Confirmation Procedure ..................................299
TF
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................300
Mode ........................................................................255 DTC P0325 KNOCK SENSOR (KS) ...........................308
ECM Terminals and Reference Value .....................255 Component Description ...........................................308 PD
On Board Diagnosis Logic.......................................255 ECM Terminals and Reference Value .....................308
DTC Confirmation Procedure ..................................256 On Board Diagnosis Logic.......................................308
Overall Function Check ...........................................257 DTC Confirmation Procedure ..................................308 AX
Wiring Diagram ........................................................258 Wiring Diagram ........................................................309
Diagnostic Procedure ..............................................259 Diagnostic Procedure ..............................................310
DTC P0140 REAR HEATED OXYGEN SENSOR DTC P0335 CRANKSHAFT POSITION SENSOR
SU
(REAR HO2S) (HIGH VOLTAGE) ...............................265 (CKPS) (OBD)..............................................................312
Component Description ...........................................265 Component Description ...........................................312 BR
CONSULT-II Reference Value in Data Monitor ECM Terminals and Reference Value .....................312
Mode ........................................................................265 On Board Diagnosis Logic.......................................312
ECM Terminals and Reference Value .....................265 DTC Confirmation Procedure ..................................313 ST
On Board Diagnosis Logic.......................................265 Wiring Diagram ........................................................314
DTC Confirmation Procedure ..................................266 Diagnostic Procedure ..............................................315
Overall Function Check ...........................................266 DTC P0340 CAMSHAFT POSITION SENSOR RS
Wiring Diagram ........................................................267 (CMPS).........................................................................318
Diagnostic Procedure ..............................................268 Component Description ...........................................318
BT
DTC P0141 REAR HEATED OXYGEN SENSOR ECM Terminals and Reference Value .....................318
HEATER.......................................................................273 On Board Diagnosis Logic.......................................319
Description ...............................................................273 DTC Confirmation Procedure ..................................320 HA
CONSULT-II Reference Value in Data Monitor Wiring Diagram ........................................................321
Mode ........................................................................273 Diagnostic Procedure ..............................................322
ECM Terminals and Reference Value .....................273 DTC P0400 EGR FUNCTION (CLOSE)......................326 SC
On Board Diagnosis Logic.......................................273 Description ...............................................................326
DTC Confirmation Procedure ..................................274 On Board Diagnosis Logic.......................................327
EL
IDX
EC-3
CONTENTS (Cont'd)
DTC Confirmation Procedure ..................................328 On Board Diagnosis Logic.......................................398
Overall Function Check ...........................................329 DTC Confirmation Procedure ..................................399
Wiring Diagram ........................................................330 Diagnostic Procedure ..............................................400
Diagnostic Procedure ..............................................331 DTC P0500 VEHICLE SPEED SENSOR (VSS) .........412
DTC P0402 EGRC-BPT VALVE FUNCTION..............338 Component Description ...........................................412
Description ...............................................................338 ECM Terminals and Reference Value .....................412
On Board Diagnosis Logic.......................................338 On Board Diagnosis Logic.......................................412
DTC Confirmation Procedure ..................................339 DTC Confirmation Procedure ..................................412
Overall Function Check ...........................................340 Overall Function Check ...........................................413
Diagnostic Procedure ..............................................341 Wiring Diagram ........................................................414
DTC P0420 THREE WAY CATALYST FUNCTION ...346 Diagnostic Procedure ..............................................415
On Board Diagnosis Logic.......................................346 DTC P0505 IDLE AIR CONTROL VALVE (IACV) -
DTC Confirmation Procedure ..................................346 AUXILIARY AIR CONTROL (AAC) VALVE ...............416
Overall Function Check ...........................................347 Description ...............................................................416
Diagnostic Procedure ..............................................348 CONSULT-II Reference Value in Data Monitor
DTC P0440 EVAP CONTROL SYSTEM (SMALL Mode ........................................................................417
LEAK) (NEGATIVE PRESSURE)................................351 ECM Terminals and Reference Value .....................417
On Board Diagnosis Logic.......................................351 On Board Diagnosis Logic.......................................417
DTC Confirmation Procedure ..................................352 DTC Confirmation Procedure ..................................418
Diagnostic Procedure ..............................................354 Wiring Diagram ........................................................419
DTC P0443 EVAP CANISTER PURGE VOLUME Diagnostic Procedure ..............................................420
CONTROL SOLENOID VALVE (CIRCUIT).................367 DTC P0510 CLOSED THROTTLE POSITION
Description ...............................................................367 SWITCH .......................................................................422
CONSULT-II Reference Value in Data Monitor Component Description ...........................................422
Mode ........................................................................367 ECM Terminals and Reference Value .....................422
ECM Terminals and Reference Value .....................368 On Board Diagnosis Logic.......................................422
On Board Diagnosis Logic.......................................368 DTC Confirmation Procedure ..................................423
DTC Confirmation Procedure ..................................369 Overall Function Check ...........................................423
Wiring Diagram ........................................................370 Wiring Diagram ........................................................424
Diagnostic Procedure ..............................................371 Diagnostic Procedure ..............................................425
DTC P0446 EVAPORATIVE EMISSION (EVAP) DTC P0605 ECM .........................................................429
CANISTER VENT CONTROL VALVE (CIRCUIT) ......375 Component Description ...........................................429
Component Description ...........................................375 On Board Diagnosis Logic.......................................429
CONSULT-II Reference Value in Data Monitor DTC Confirmation Procedure ..................................429
Mode ........................................................................375 Diagnostic Procedure ..............................................430
ECM Terminals and Reference Value .....................375 DTC P1105 MAP/BARO SWITCH SOLENOID
On Board Diagnosis Logic.......................................375 VALVE..........................................................................431
DTC Confirmation Procedure ..................................376 Description ...............................................................431
Wiring Diagram ........................................................377 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................378 Mode ........................................................................431
DTC P0450 EVAPORATIVE EMISSION (EVAP) ECM Terminals and Reference Value .....................432
CONTROL SYSTEM PRESSURE SENSOR ..............383 On Board Diagnosis Logic.......................................432
Component Description ...........................................383 DTC Confirmation Procedure ..................................432
CONSULT-II Reference Value in Data Monitor Wiring Diagram ........................................................434
Mode ........................................................................383 Diagnostic Procedure ..............................................435
ECM Terminals and Reference Value .....................383 DTC P1148 CLOSED LOOP CONTROL ....................447
On Board Diagnosis Logic.......................................384 On Board Diagnosis Logic.......................................447
DTC Confirmation Procedure ..................................385 DTC Confirmation Procedure ..................................447
Wiring Diagram ........................................................386 Overall Function Check ...........................................448
Diagnostic Procedure ..............................................387 Diagnostic Procedure ..............................................448
DTC P0455 EVAP CONTROL SYSTEM (GROSS DTC P1320 IGNITION SIGNAL...................................449
LEAK)...........................................................................398 Component Description ...........................................449
EC-4
CONTENTS (Cont'd)
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................491 GI
Mode ........................................................................449 DTC P1446 EVAPORATIVE EMISSION (EVAP)
ECM Terminals and Reference Value .....................449 CANISTER VENT CONTROL VALVE (CLOSE).........499
On Board Diagnosis Logic.......................................450 Component Description ...........................................499 MA
DTC Confirmation Procedure ..................................450 CONSULT-II Reference Value in Data Monitor
Wiring Diagram ........................................................451 Mode ........................................................................499
Diagnostic Procedure ..............................................452 ECM Terminals and Reference Value .....................499
EM
DTC P1336 CRANKSHAFT POSITION SENSOR On Board Diagnosis Logic.......................................499
(CKPS) (OBD) (COG)..................................................457 DTC Confirmation Procedure ..................................500 LC
Component Description ...........................................457 Diagnostic Procedure ..............................................501
ECM Terminals and Reference Value .....................457 DTC P1447 EVAPORATIVE EMISSION (EVAP)
On Board Diagnosis Logic.......................................457 CONTROL SYSTEM PURGE FLOW
DTC Confirmation Procedure ..................................458 MONITORING ..............................................................505
Wiring Diagram ........................................................459 System Description..................................................505
Diagnostic Procedure ..............................................460 On Board Diagnosis Logic.......................................505 FE
DTC P1400 EGRC-SOLENOID VALVE ......................463 DTC Confirmation Procedure ..................................506
Component Description ...........................................463 Overall Function Check ...........................................506 CL
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................507
Mode ........................................................................463 DTC P1448 EVAPORATIVE EMISSION (EVAP)
ECM Terminals and Reference Value .....................463 CANISTER VENT CONTROL VALVE (OPEN)...........515 MT
On Board Diagnosis Logic.......................................463 Component Description ...........................................515
DTC Confirmation Procedure ..................................464 CONSULT-II Reference Value in Data Monitor
Overall Function Check ...........................................464 Mode ........................................................................515 AT
Wiring Diagram ........................................................465 ECM Terminals and Reference Value .....................515
Diagnostic Procedure ..............................................466 On Board Diagnosis Logic.......................................515
TF
DTC P1401 EGR TEMPERATURE SENSOR.............470 DTC Confirmation Procedure ..................................516
Component Description ...........................................470 Overall Function Check ...........................................517
On Board Diagnosis Logic.......................................470 Diagnostic Procedure ..............................................518 PD
DTC Confirmation Procedure ..................................471 DTC P1490 VACUUM CUT VALVE BYPASS
Overall Function Check ...........................................472 VALVE (CIRCUIT)........................................................523
Wiring Diagram ........................................................473 Description ...............................................................523 AX
Diagnostic Procedure ..............................................474 CONSULT-II Reference Value in Data Monitor
DTC P1402 EGR FUNCTION (OPEN) ........................476 Mode ........................................................................523
Description ...............................................................476 ECM Terminals and Reference Value .....................523
SU
On Board Diagnosis Logic.......................................477 On Board Diagnosis Logic.......................................524
DTC Confirmation Procedure ..................................477 DTC Confirmation Procedure ..................................524 BR
Wiring Diagram ........................................................479 Wiring Diagram ........................................................525
Diagnostic Procedure ..............................................480 Diagnostic Procedure ..............................................526
DTC P1440 EVAP CONTROL SYSTEM (SMALL DTC P1491 VACUUM CUT VALVE BYPASS ST
LEAK) (POSITIVE PRESSURE) .................................485 VALVE..........................................................................530
On Board Diagnosis Logic.......................................485 Description ...............................................................530
DTC Confirmation Procedure ..................................486 CONSULT-II Reference Value in Data Monitor RS
Diagnostic Procedure ..............................................486 Mode ........................................................................530
DTC P1444 EVAP CANISTER PURGE VOLUME ECM Terminals and Reference Value .....................530
BT
CONTROL SOLENOID VALVE...................................487 On Board Diagnosis Logic.......................................531
Description ...............................................................487 DTC Confirmation Procedure ..................................531
CONSULT-II Reference Value in Data Monitor Overall Function Check ...........................................532 HA
Mode ........................................................................487 Wiring Diagram ........................................................533
ECM Terminals and Reference Value .....................488 Diagnostic Procedure ..............................................534
On Board Diagnosis Logic.......................................488 DTC P1706 PARK/NEUTRAL POSITION (PNP) SC
DTC Confirmation Procedure ..................................489 SWITCH .......................................................................541
Wiring Diagram ........................................................490 Component Description ...........................................541
EL
IDX
EC-5
CONTENTS (Cont'd)
CONSULT-II Reference Value in Data Monitor EGR Temperature Sensor .......................................579
Mode ........................................................................541 Fuel Pump ...............................................................579
ECM Terminals and Reference Value .....................541 IACV-AAC Valve ......................................................580
On Board Diagnosis Logic.......................................541 Injector .....................................................................580
DTC Confirmation Procedure ..................................542 Resistor....................................................................580
Overall Function Check ...........................................543 Throttle Position Sensor ..........................................580
Wiring Diagram ........................................................544 Front Heated Oxygen Sensor Heater......................580
Diagnostic Procedure For M/T Models....................545 Calculated Load Value.............................................580
TROUBLE DIAGNOSIS FOR OVERHEAT .................547 Intake Air Temperature Sensor................................580
On Board Diagnosis Logic.......................................547 Rear Heated Oxygen Sensor Heater ......................580
Overall Function Check ...........................................547 Crankshaft Position Sensor (OBD)..........................580
Diagnostic Procedure ..............................................548 Fuel Tank Temperature Sensor ...............................580
Main 11 Causes of Overheating..............................551
INJECTOR ...................................................................552 VG33E
Component Description ...........................................552
ECM Terminals and Reference Value .....................552 TROUBLE DIAGNOSIS - INDEX ................................581
Wiring Diagram ........................................................553 Alphabetical & P No. Index for DTC .......................581
Diagnostic Procedure ..............................................554 PRECAUTIONS ...........................................................587
START SIGNAL...........................................................557 Supplemental Restraint System (SRS) AIR
CONSULT-II Reference Value in Data Monitor BAG and SEAT BELT PRE-TENSIONER...........587
Mode ........................................................................557 Precautions for On Board Diagnostic (OBD)
ECM Terminals and Reference Value .....................557 System of Engine and A/T.......................................587
Wiring Diagram ........................................................558 Engine Fuel & Emission Control System ................588
Diagnostic Procedure ..............................................559 Precautions ..............................................................589
FUEL PUMP.................................................................561 Wiring Diagrams and Trouble Diagnosis.................590
System Description..................................................561 PREPARATION ...........................................................591
Component Description ...........................................561 Special Service Tools ..............................................591
CONSULT-II Reference Value in Data Monitor Commercial Service Tools .......................................591
Mode ........................................................................561 ENGINE AND EMISSION CONTROL OVERALL
ECM Terminals and Reference Value .....................561 SYSTEM.......................................................................593
Wiring Diagram ........................................................562 Engine Control Component Parts Location.............593
Diagnostic Procedure ..............................................563 Circuit Diagram ........................................................595
POWER STEERING OIL PRESSURE SWITCH.........568 System Diagram ......................................................596
Component Description ...........................................568 Vacuum Hose Drawing ............................................597
CONSULT-II Reference Value in Data Monitor System Chart ...........................................................598
Mode ........................................................................568 ENGINE AND EMISSION BASIC CONTROL
ECM Terminals and Reference Value .....................568 SYSTEM DESCRIPTION .............................................599
Wiring Diagram ........................................................569 Multiport Fuel Injection (MFI) System .....................599
Diagnostic Procedure ..............................................570 Distributor Ignition (DI) System ...............................601
IACV-FICD SOLENOID VALVE...................................572 Air Conditioning Cut Control....................................602
Component Description ...........................................572 Fuel Cut Control (at no load & high engine
ECM Terminals and Reference Value .....................572 speed) ......................................................................603
Wiring Diagram ........................................................573 Evaporative Emission System .................................603
Diagnostic Procedure ..............................................574 Positive Crankcase Ventilation ................................609
MIL & DATA LINK CONNECTORS ............................578 BASIC SERVICE PROCEDURE .................................610
Wiring Diagram ........................................................578 Fuel Pressure Release ............................................610
SERVICE DATA AND SPECIFICATIONS (SDS) .......579 Fuel Pressure Check ...............................................610
Fuel Pressure Regulator..........................................579 Fuel Pressure Regulator Check ..............................611
Idle Speed and Ignition Timing................................579 Injector .....................................................................611
Ignition Coil ..............................................................579 Fast Idle Cam (FIC).................................................612
Mass Air Flow Sensor..............................................579 Idle Speed/Ignition Timing/Idle Mixture Ratio
Engine Coolant Temperature Sensor ......................579 Adjustment ...............................................................614
EC-6
CONTENTS (Cont'd)
ON BOARD DIAGNOSTIC SYSTEM Wiring Diagram ........................................................736 GI
DESCRIPTION .............................................................627 Diagnostic Procedure ..............................................737
Introduction ..............................................................627 DTC P0115 ENGINE COOLANT TEMPERATURE
Two Trip Detection Logic .........................................627 SENSOR (ECTS) (CIRCUIT) .......................................739 MA
Emission-related Diagnostic Information .................628 Component Description ...........................................739
Malfunction Indicator Lamp (MIL)............................642 On Board Diagnosis Logic.......................................739
OBD System Operation Chart .................................646 DTC Confirmation Procedure ..................................740
EM
CONSULT-II .............................................................651 Wiring Diagram ........................................................741
Generic Scan Tool (GST) ........................................663 Diagnostic Procedure ..............................................742 LC
TROUBLE DIAGNOSIS - INTRODUCTION................665 DTC P0120 THROTTLE POSITION SENSOR ...........744
Introduction ..............................................................665 Description ...............................................................744
Work Flow................................................................667 CONSULT-II Reference Value in Data Monitor
TROUBLE DIAGNOSIS - BASIC INSPECTION .........669 Mode ........................................................................744
Basic Inspection.......................................................669 ECM Terminals and Reference Value .....................745
TROUBLE DIAGNOSIS - GENERAL On Board Diagnosis Logic.......................................745 FE
DESCRIPTION .............................................................686 DTC Confirmation Procedure ..................................746
DTC Inspection Priority Chart..................................686 Wiring Diagram ........................................................749 CL
Fail-safe Chart .........................................................687 Diagnostic Procedure ..............................................750
Symptom Matrix Chart.............................................688 DTC P0125 ENGINE COOLANT TEMPERATURE
CONSULT-II Reference Value in Data Monitor SENSOR (ECTS) .........................................................758 MT
Mode ........................................................................692 Description ...............................................................758
Major Sensor Reference Graph in Data Monitor On Board Diagnosis Logic.......................................758
Mode ........................................................................694 DTC Confirmation Procedure ..................................759 AT
ECM Terminals and Reference Value .....................697 Wiring Diagram ........................................................760
TROUBLE DIAGNOSIS FOR INTERMITTENT Diagnostic Procedure ..............................................761
TF
INCIDENT.....................................................................706 DTC P0130 (RIGHT, -B1), P0150 (LEFT, -B2)
Description ...............................................................706 FRONT HO2S (CIRCUIT) ............................................763
Diagnostic Procedure ..............................................706 Component Description ...........................................763 PD
TROUBLE DIAGNOSIS FOR POWER SUPPLY........707 CONSULT-II Reference Value in Data Monitor
Main Power Supply and Ground Circuit..................707 Mode ........................................................................763
DTC P0100 MASS AIR FLOW SENSOR (MAFS)......713 ECM Terminals and Reference Value .....................763 AX
Component Description ...........................................713 On Board Diagnosis Logic.......................................764
CONSULT-II Reference Value in Data Monitor DTC Confirmation Procedure ..................................765
Mode ........................................................................713 Overall Function Check ...........................................766
SU
ECM Terminals and Reference Value .....................713 Wiring Diagram ........................................................767
On Board Diagnosis Logic.......................................713 Diagnostic Procedure ..............................................769 BR
DTC Confirmation Procedure ..................................714 DTC P0131 (RIGHT, -B1), P0151 (LEFT, -B2)
Overall Function Check ...........................................716 FRONT HO2S (LEAN SHIFT MONITORING).............772
Wiring Diagram ........................................................717 Component Description ...........................................772 ST
Diagnostic Procedure ..............................................718 CONSULT-II Reference Value in Data Monitor
DTC P0105 ABSOLUTE PRESSURE SENSOR ........722 Mode ........................................................................772
Component Description ...........................................722 ECM Terminals and Reference Value .....................772 RS
On Board Diagnosis Logic.......................................722 On Board Diagnosis Logic.......................................773
DTC Confirmation Procedure ..................................723 DTC Confirmation Procedure ..................................774
BT
Overall Function Check ...........................................724 Overall Function Check ...........................................775
Wiring Diagram ........................................................725 Diagnostic Procedure ..............................................775
Diagnostic Procedure ..............................................726 DTC P0132 (RIGHT, -B1), P0152 (LEFT, -B2) HA
DTC P0110 INTAKE AIR TEMPERATURE FRONT HO2S (RICH SHIFT MONITORING)..............780
SENSOR ......................................................................734 Component Description ...........................................780
Component Description ...........................................734 CONSULT-II Reference Value in Data Monitor SC
On Board Diagnosis Logic.......................................734 Mode ........................................................................780
DTC Confirmation Procedure ..................................734 ECM Terminals and Reference Value .....................780
EL
IDX
EC-7
CONTENTS (Cont'd)
On Board Diagnosis Logic.......................................781 On Board Diagnosis Logic.......................................825
DTC Confirmation Procedure ..................................782 DTC Confirmation Procedure ..................................826
Overall Function Check ...........................................783 Overall Function Check ...........................................827
Diagnostic Procedure ..............................................783 Wiring Diagram ........................................................828
DTC P0133 (RIGHT, -B1), P0153 (LEFT, -B2) Diagnostic Procedure ..............................................830
FRONT HO2S (RESPONSE MONITORING) ..............788 DTC P0139 (RIGHT, -B1), P0159 (LEFT, -B2)
Component Description ...........................................788 REAR HO2S (RESPONSE MONITORING) ................835
CONSULT-II Reference Value in Data Monitor Component Description ...........................................835
Mode ........................................................................788 CONSULT-II Reference Value in Data Monitor
ECM Terminals and Reference Value .....................788 Mode ........................................................................835
On Board Diagnosis Logic.......................................789 ECM Terminals and Reference Value .....................835
DTC Confirmation Procedure ..................................789 On Board Diagnosis Logic.......................................835
Overall Function Check ...........................................790 DTC Confirmation Procedure ..................................836
Wiring Diagram ........................................................791 Overall Function Check ...........................................837
Diagnostic Procedure ..............................................793 Wiring Diagram ........................................................838
DTC P0134 (RIGHT, -B1), P0154 (LEFT, -B2) Diagnostic Procedure ..............................................840
FRONT HO2S (HIGH VOLTAGE) ...............................801 DTC P0140 (RIGHT, -B1), P0160 (LEFT, -B2)
Component Description ...........................................801 REAR HO2S (HIGH VOLTAGE) .................................845
CONSULT-II Reference Value in Data Monitor Component Description ...........................................845
Mode ........................................................................801 CONSULT-II Reference Value in Data Monitor
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