Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti QX4 R50 1997-1998.2001 Approved QX4-R50-2001 ec
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ENGINE CONTROL SYSTEM GI
SECTION EC MA
EM
LC
CONTENTS FE
TROUBLE DIAGNOSIS - INDEX ....................................8 ON BOARD DIAGNOSTIC SYSTEM
AT
Alphabetical & P No. Index for DTC ...........................8 DESCRIPTION ...............................................................59
PRECAUTIONS .............................................................14 Introduction ................................................................59 TF
Supplemental Restraint System (SRS) AIR Two Trip Detection Logic ...........................................59
BAG and SEAT BELT PRE-TENSIONER.............14 Emission-related Diagnostic Information ...................60
Precautions for On Board Diagnostic (OBD) Malfunction Indicator Lamp (MIL)..............................74 PD
System of Engine and A/T.........................................14 OBD System Operation Chart ...................................75
Engine Fuel & Emission Control System ..................15 CONSULT-II ...............................................................81
Precautions ................................................................16 Generic Scan Tool (GST) ..........................................95
AX
Wiring Diagrams and Trouble Diagnosis...................17 TROUBLE DIAGNOSIS - INTRODUCTION..................97
PREPARATION .............................................................18 Introduction ................................................................97 SU
Special Service Tools ................................................18 Work Flow..................................................................99
Commercial Service Tools .........................................18 TROUBLE DIAGNOSIS - BASIC INSPECTION .........101
ENGINE AND EMISSION CONTROL OVERALL Basic Inspection.......................................................101 BR
SYSTEM.........................................................................20 TROUBLE DIAGNOSIS - GENERAL
Engine Control Component Parts Location...............20 DESCRIPTION .............................................................116
Circuit Diagram ..........................................................24 DTC Inspection Priority Chart..................................116 ST
System Diagram ........................................................25 Fail-safe Chart .........................................................117
Vacuum Hose Drawing ..............................................26 Symptom Matrix Chart.............................................118
RS
System Chart .............................................................27 CONSULT-II Reference Value in Data Monitor
ENGINE AND EMISSION BASIC CONTROL Mode ........................................................................122
SYSTEM DESCRIPTION ...............................................28 Major Sensor Reference Graph in Data Monitor BT
Multiport Fuel Injection (MFI) System .......................28 Mode ........................................................................124
Electronic Ignition (EI) System ..................................30 ECM Terminals and Reference Value .....................127
Air Conditioning Cut Control......................................31 TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..136 HA
Fuel Cut Control (at no load & high engine Description ...............................................................136
speed) ........................................................................32 Testing Condition .....................................................136
Evaporative Emission System ...................................32 Inspection Procedure...............................................136
SC
Positive Crankcase Ventilation ..................................38 Diagnostic Procedure ..............................................137
BASIC SERVICE PROCEDURE ...................................39 TROUBLE DIAGNOSIS FOR INTERMITTENT EL
Fuel Pressure Release ..............................................39 INCIDENT.....................................................................140
Fuel Pressure Check .................................................39 Description ...............................................................140
Fuel Pressure Regulator Check ................................40 Diagnostic Procedure ..............................................140 IDX
Injector .......................................................................41 TROUBLE DIAGNOSIS FOR POWER SUPPLY........141
How to Check Idle Speed and Ignition Timing..........42 ECM Terminals and Reference Value .....................141
Idle Speed/Ignition Timing/Idle Mixture Ratio Main Power Supply and Ground Circuit..................142
Adjustment .................................................................43 DTC P0100 MASS AIR FLOW SENSOR (MAFS)......150
Idle Air Volume Learning ...........................................57 Component Description ...........................................150
CONTENTS (Cont'd)
CONSULT-II Reference Value in Data Monitor DTC P0130, P0150 HEATED OXYGEN SENSOR 1
Mode ........................................................................150 (FRONT) (BANK 1)/(BANK 2) (CIRCUIT) ..................192
ECM Terminals and Reference Value .....................150 Component Description ...........................................192
On Board Diagnosis Logic.......................................151 CONSULT-II Reference Value in Data Monitor
Possible Cause........................................................151 Mode ........................................................................192
DTC Confirmation Procedure ..................................151 ECM Terminals and Reference Value .....................192
Overall Function Check ...........................................153 On Board Diagnosis Logic.......................................193
Wiring Diagram ........................................................154 Possible Cause........................................................193
Diagnostic Procedure ..............................................155 DTC Confirmation Procedure ..................................194
DTC P0105 ABSOLUTE PRESSURE SENSOR ........158 Overall Function Check ...........................................194
Component Description ...........................................158 Wiring Diagram ........................................................196
ECM Terminals and Reference Value .....................158 Diagnostic Procedure ..............................................198
On Board Diagnosis Logic.......................................158 DTC P0131, P0151 HEATED OXYGEN SENSOR 1
Possible Cause........................................................159 (FRONT) (BANK 1)/(BANK 2) (LEAN SHIFT
DTC Confirmation Procedure ..................................159 MONITORING) .............................................................202
Wiring Diagram ........................................................160 Component Description ...........................................202
Diagnostic Procedure ..............................................161 CONSULT-II Reference Value in Data Monitor
DTC P0110 INTAKE AIR TEMPERATURE Mode ........................................................................202
SENSOR ......................................................................164 ECM Terminals and Reference Value .....................202
Component Description ...........................................164 On Board Diagnosis Logic.......................................203
On Board Diagnosis Logic.......................................164 Possible Cause........................................................203
Possible Cause........................................................164 DTC Confirmation Procedure ..................................203
DTC Confirmation Procedure ..................................164 Overall Function Check ...........................................204
Wiring Diagram ........................................................166 Diagnostic Procedure ..............................................205
Diagnostic Procedure ..............................................167 DTC P0132, P0152 HEATED OXYGEN SENSOR 1
DTC P0115 ENGINE COOLANT TEMPERATURE (FRONT) (BANK 1)/(BANK 2) (RICH SHIFT
SENSOR (ECTS) (CIRCUIT) .......................................169 MONITORING) .............................................................210
Component Description ...........................................169 Component Description ...........................................210
On Board Diagnosis Logic.......................................169 CONSULT-II Reference Value in Data Monitor
Possible Cause........................................................170 Mode ........................................................................210
DTC Confirmation Procedure ..................................170 ECM Terminals and Reference Value .....................210
Wiring Diagram ........................................................171 On Board Diagnosis Logic.......................................211
Diagnostic Procedure ..............................................172 Possible Cause........................................................211
DTC P0120 THROTTLE POSITION SENSOR ...........174 DTC Confirmation Procedure ..................................211
Description ...............................................................174 Overall Function Check ...........................................212
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................213
Mode ........................................................................174 DTC P0133, P0153 HEATED OXYGEN SENSOR 1
ECM Terminals and Reference Value .....................175 (FRONT) (BANK 1)/(BANK 2) (RESPONSE
On Board Diagnosis Logic.......................................175 MONITORING) .............................................................218
Possible Cause........................................................175 Component Description ...........................................218
DTC Confirmation Procedure ..................................176 CONSULT-II Reference Value in Data Monitor
Wiring Diagram ........................................................180 Mode ........................................................................218
Diagnostic Procedure ..............................................181 ECM Terminals and Reference Value .....................218
DTC P0125 ENGINE COOLANT TEMPERATURE On Board Diagnosis Logic.......................................219
SENSOR (ECTS) .........................................................187 Possible Cause........................................................219
Description ...............................................................187 DTC Confirmation Procedure ..................................220
On Board Diagnosis Logic.......................................187 Overall Function Check ...........................................221
Possible Cause........................................................188 Wiring Diagram ........................................................222
DTC Confirmation Procedure ..................................188 Diagnostic Procedure ..............................................224
Wiring Diagram ........................................................189 DTC P0134, P0154 HEATED OXYGEN SENSOR 1
Diagnostic Procedure ..............................................190 (FRONT) (BANK 1)/(BANK 2) (HIGH VOLTAGE)......231
Component Description ...........................................231
EC-2
CONTENTS (Cont'd)
CONSULT-II Reference Value in Data Monitor On Board Diagnosis Logic.......................................267 GI
Mode ........................................................................231 Possible Cause........................................................268
ECM Terminals and Reference Value .....................231 DTC Confirmation Procedure ..................................268
On Board Diagnosis Logic.......................................232 Overall Function Check ...........................................268 MA
Possible Cause........................................................232 Wiring Diagram ........................................................270
DTC Confirmation Procedure ..................................232 Diagnostic Procedure ..............................................272
Wiring Diagram ........................................................234 DTC P0140, P0160 HEATED OXYGEN SENSOR 2
EM
Diagnostic Procedure ..............................................236 (REAR) (BANK 1)/(BANK 2) (HIGH VOLTAGE)........277
DTC P0135, P0155 HEATED OXYGEN SENSOR 1 Component Description ...........................................277 LC
HEATER (FRONT) (BANK 1)/(BANK 2).....................240 CONSULT-II Reference Value in Data Monitor
Description ...............................................................240 Mode ........................................................................277
CONSULT-II Reference Value in Data Monitor ECM Terminals and Reference Value .....................277
Mode ........................................................................240 On Board Diagnosis Logic.......................................277
ECM Terminals and Reference Value .....................240 Possible Cause........................................................278
On Board Diagnosis Logic.......................................241 DTC Confirmation Procedure ..................................278 FE
Possible Cause........................................................241 Overall Function Check ...........................................278
DTC Confirmation Procedure ..................................241 Wiring Diagram ........................................................280 AT
Wiring Diagram ........................................................242 Diagnostic Procedure ..............................................282
Diagnostic Procedure ..............................................244 DTC P0141, P0161 HEATED OXYGEN SENSOR 2
DTC P0137, P0157 HEATED OXYGEN SENSOR 2 HEATER (REAR) (BANK 1)/(BANK 2).......................286 TF
(REAR) (BANK 1)/(BANK 2) (MIN. VOLTAGE Description ...............................................................286
MONITORING) .............................................................247 CONSULT-II Reference Value in Data Monitor
Component Description ...........................................247 Mode ........................................................................286 PD
CONSULT-II Reference Value in Data Monitor ECM Terminals and Reference Value .....................286
Mode ........................................................................247 On Board Diagnosis Logic.......................................287
AX
ECM Terminals and Reference Value .....................247 Possible Cause........................................................287
On Board Diagnosis Logic.......................................247 DTC Confirmation Procedure ..................................287
Possible Cause........................................................248 Wiring Diagram ........................................................289 SU
DTC Confirmation Procedure ..................................248 Diagnostic Procedure ..............................................291
Overall Function Check ...........................................248 DTC P0171 (RIGHT, -B1), P0174 (LEFT, -B2)
Wiring Diagram ........................................................250 FUEL INJECTION SYSTEM FUNCTION (LEAN).......294 BR
Diagnostic Procedure ..............................................252 On Board Diagnosis Logic.......................................294
DTC P0138, P0158 HEATED OXYGEN SENSOR 2 Possible Cause........................................................294
(REAR) (BANK 1)/(BANK 2) (MAX. VOLTAGE DTC Confirmation Procedure ..................................294
ST
MONITORING) .............................................................257 Wiring Diagram ........................................................296
Component Description ...........................................257 Diagnostic Procedure ..............................................298 RS
CONSULT-II Reference Value in Data Monitor DTC P0172 (RIGHT, -B1), P0175 (LEFT, -B2)
Mode ........................................................................257 FUEL INJECTION SYSTEM FUNCTION (RICH)........302
ECM Terminals and Reference Value .....................257 On Board Diagnosis Logic.......................................302 BT
On Board Diagnosis Logic.......................................257 Possible Cause........................................................302
Possible Cause........................................................258 DTC Confirmation Procedure ..................................302
DTC Confirmation Procedure ..................................258 Wiring Diagram ........................................................304 HA
Overall Function Check ...........................................258 Diagnostic Procedure ..............................................306
Wiring Diagram ........................................................260 DTC P0180 FUEL TANK TEMPERATURE
SC
Diagnostic Procedure ..............................................262 SENSOR ......................................................................309
DTC P0139, P0159 HEATED OXYGEN SENSOR 2 Component Description ...........................................309
(REAR) (BANK 1)/(BANK 2) (RESPONSE On Board Diagnosis Logic.......................................309 EL
MONITORING) .............................................................267 Possible Cause........................................................309
Component Description ...........................................267 DTC Confirmation Procedure ..................................310
CONSULT-II Reference Value in Data Monitor Wiring Diagram ........................................................311 IDX
Mode ........................................................................267 Diagnostic Procedure ..............................................312
ECM Terminals and Reference Value .....................267
EC-3
CONTENTS (Cont'd)
DTC P0217 COOLANT OVERTEMPERATURE DTC Confirmation Procedure ..................................354
ENRICHMENT PROTECTION.....................................314 Diagnostic Procedure ..............................................355
On Board Diagnosis Logic.......................................314 DTC P0443 EVAP CANISTER PURGE VOLUME
Possible Cause........................................................314 CONTROL SOLENOID VALVE (CIRCUIT).................367
Overall Function Check ...........................................314 Description ...............................................................367
Diagnostic Procedure ..............................................316 CONSULT-II Reference Value in Data Monitor
Main 12 Causes of Overheating..............................319 Mode ........................................................................367
DTC P0300 - P0306 NO. 6 - 1 CYLINDER ECM Terminals and Reference Value .....................368
MISFIRE, MULTIPLE CYLINDER MISFIRE ...............320 On Board Diagnosis Logic.......................................368
On Board Diagnosis Logic.......................................320 Possible Cause........................................................368
Possible Cause........................................................320 DTC Confirmation Procedure ..................................369
DTC Confirmation Procedure ..................................321 Wiring Diagram ........................................................370
Diagnostic Procedure ..............................................321 Diagnostic Procedure ..............................................371
DTC P0325 KNOCK SENSOR (KS) ...........................328 DTC P0446 EVAPORATIVE EMISSION (EVAP)
Component Description ...........................................328 CANISTER VENT CONTROL VALVE (CIRCUIT) ......374
ECM Terminals and Reference Value .....................328 Component Description ...........................................374
On Board Diagnosis Logic.......................................328 CONSULT-II Reference Value in Data Monitor
Possible Cause........................................................328 Mode ........................................................................374
DTC Confirmation Procedure ..................................328 ECM Terminals and Reference Value .....................374
Wiring Diagram ........................................................330 On Board Diagnosis Logic.......................................374
Diagnostic Procedure ..............................................331 Possible Cause........................................................375
DTC P0335 CRANKSHAFT POSITION SENSOR DTC Confirmation Procedure ..................................375
(CKPS) (POS) ..............................................................334 Wiring Diagram ........................................................376
Component Description ...........................................334 Diagnostic Procedure ..............................................377
CONSULT-II Reference Value in Data Monitor DTC P0450 EVAPORATIVE EMISSION (EVAP)
Mode ........................................................................334 CONTROL SYSTEM PRESSURE SENSOR ..............381
ECM Terminals and Reference Value .....................335 Component Description ...........................................381
On Board Diagnosis Logic.......................................335 CONSULT-II Reference Value in Data Monitor
Possible Cause........................................................335 Mode ........................................................................381
DTC Confirmation Procedure ..................................336 ECM Terminals and Reference Value .....................381
Wiring Diagram ........................................................337 On Board Diagnosis Logic.......................................382
Diagnostic Procedure ..............................................338 Possible Cause........................................................382
DTC P0340 CAMSHAFT POSITION SENSOR DTC Confirmation Procedure ..................................382
(CMPS) (PHASE).........................................................342 Wiring Diagram ........................................................384
Component Description ...........................................342 Diagnostic Procedure ..............................................385
ECM Terminals and Reference Value .....................342 DTC P0455 EVAP CONTROL SYSTEM (GROSS
On Board Diagnosis Logic.......................................342 LEAK)...........................................................................394
Possible Cause........................................................343 On Board Diagnosis Logic.......................................394
DTC Confirmation Procedure ..................................343 Possible Cause........................................................394
Wiring Diagram ........................................................344 DTC Confirmation Procedure ..................................396
Diagnostic Procedure ..............................................345 Diagnostic Procedure ..............................................397
DTC P0420 (RIGHT BANK, -B1), P0430 (LEFT DTC P0460 FUEL LEVEL SENSOR FUNCTION
BANK, -B2) THREE WAY CATALYST FUNCTION...347 (SLOSH).......................................................................407
On Board Diagnosis Logic.......................................347 Component Description ...........................................407
Possible Cause........................................................347 On Board Diagnostic Logic......................................407
DTC Confirmation Procedure ..................................348 Possible Cause........................................................407
Overall Function Check ...........................................348 DTC Confirmation Procedure ..................................407
Diagnostic Procedure ..............................................349 Wiring Diagram ........................................................408
DTC P0440 EVAP CONTROL SYSTEM (SMALL Diagnostic Procedure ..............................................409
LEAK) (NEGATIVE PRESSURE)................................352 DTC P0461 FUEL LEVEL SENSOR FUNCTION .......411
On Board Diagnosis Logic.......................................352 Component Description ...........................................411
Possible Cause........................................................352 On Board Diagnostic Logic......................................411
EC-4
CONTENTS (Cont'd)
Possible Cause........................................................411 Possible Cause........................................................444 GI
Overall Function Check ...........................................411 DTC Confirmation Procedure ..................................444
DTC P0464 FUEL LEVEL SENSOR CIRCUIT ...........413 Diagnostic Procedure ..............................................445
Component Description ...........................................413 DTC P1110 (RIGHT, -B1), P1135 (LEFT, -B2) MA
On Board Diagnostic Logic......................................413 INTAKE VALVE TIMING CONTROL ..........................446
Possible Cause........................................................413 Description ...............................................................446
DTC Confirmation Procedure ..................................413 CONSULT-II Reference Value in Data Monitor
EM
Wiring Diagram ........................................................414 Mode ........................................................................446
Diagnostic Procedure ..............................................415 ECM Terminals and Reference Value .....................447 LC
DTC P0500 VEHICLE SPEED SENSOR (VSS) .........417 On Board Diagnosis Logic.......................................448
Component Description ...........................................417 Possible Cause........................................................448
ECM Terminals and Reference Value .....................417 DTC Confirmation Procedure ..................................449
On Board Diagnosis Logic.......................................417 DTC P1111 (RIGHT, -B1), P1136 (LEFT, -B2)
Possible Cause........................................................418 INTAKE VALVE TIMING CONTROL SOLENOID
DTC Confirmation Procedure ..................................418 VALVE (CIRCUIT)........................................................451 FE
Overall Function Check ...........................................418 Component Description ...........................................451
Wiring Diagram ........................................................420 CONSULT-II Reference Value in Data Monitor AT
Diagnostic Procedure ..............................................421 Mode ........................................................................451
DTC P0505 IDLE AIR CONTROL VALVE (IACV) - ECM Terminals and Reference Value .....................451
AUXILIARY AIR CONTROL (AAC) VALVE ...............422 On Board Diagnosis Logic.......................................452 TF
Description ...............................................................422 Possible Cause........................................................452
CONSULT-II Reference Value in Data Monitor DTC Confirmation Procedure ..................................452
Mode ........................................................................423 Wiring Diagram ........................................................453 PD
ECM Terminals and Reference Value .....................423 Diagnostic Procedure ..............................................455
On Board Diagnosis Logic.......................................423 DTC P1130 SWIRL CONTROL VALVE CONTROL
AX
Possible Cause........................................................423 SOLENOID VALVE......................................................458
DTC Confirmation Procedure ..................................423 Description ...............................................................458
Wiring Diagram ........................................................425 CONSULT-II Reference Value in Data Monitor SU
Diagnostic Procedure ..............................................426 Mode ........................................................................459
DTC P0510 CLOSED THROTTLE POSITION ECM Terminals and Reference Value .....................459
SWITCH .......................................................................431 On Board Diagnosis Logic.......................................459 BR
Component Description ...........................................431 Possible Cause........................................................460
CONSULT-II Reference Value in Data Monitor DTC Confirmation Procedure ..................................460
Mode ........................................................................431 Wiring Diagram ........................................................462
ST
ECM Terminals and Reference Value .....................431 Diagnostic Procedure ..............................................463
On Board Diagnosis Logic.......................................431 DTC P1140 (RIGHT, -B1), P1145 (LEFT, -B2) RS
Possible Cause........................................................431 INTAKE VALVE TIMING CONTROL POSITION
DTC Confirmation Procedure ..................................432 SENSOR (CIRCUIT) ....................................................482
Overall Function Check ...........................................432 Component Description ...........................................482 BT
Wiring Diagram ........................................................434 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................435 Mode ........................................................................482
DTC P0600 A/T COMMUNICATION LINE..................440 ECM Terminals and Reference Value .....................482 HA
System Description..................................................440 On Board Diagnosis Logic.......................................483
ECM Terminals and Reference Value .....................440 Possible Cause........................................................483
SC
On Board Diagnosis Logic.......................................440 DTC Confirmation Procedure ..................................483
Possible Cause........................................................440 Wiring Diagram ........................................................485
DTC Confirmation Procedure ..................................440 Diagnostic Procedure ..............................................487 EL
Wiring Diagram ........................................................442 DTC P1148 (RIGHT BANK, -B1), P1168 (LEFT
Diagnostic Procedure ..............................................443 BANK, -B2) CLOSED LOOP CONTROL ...................491
DTC P0605 ECM .........................................................444 On Board Diagnosis Logic.......................................491 IDX
Component Description ...........................................444 Possible Cause........................................................491
On Board Diagnosis Logic.......................................444 DTC Confirmation Procedure ..................................491
EC-5
CONTENTS (Cont'd)
Overall Function Check ...........................................492 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................492 Mode ........................................................................541
DTC P1165 SWIRL CONTROL VALVE CONTROL ECM Terminals and Reference Value .....................542
VACUUM CHECK SWITCH.........................................493 On Board Diagnosis Logic.......................................542
Component Description ...........................................493 Possible Cause........................................................542
CONSULT-II Reference Value in Data Monitor DTC Confirmation Procedure ..................................543
Mode ........................................................................493 Wiring Diagram ........................................................544
ECM Terminals and Reference Value .....................493 Diagnostic Procedure ..............................................545
On Board Diagnosis Logic.......................................494 DTC P1446 EVAPORATIVE EMISSION (EVAP)
Possible Cause........................................................494 CANISTER VENT CONTROL VALVE (CLOSE).........553
DTC Confirmation Procedure ..................................494 Component Description ...........................................553
Wiring Diagram ........................................................495 CONSULT-II Reference Value in Data Monitor
Diagnostic Procedure ..............................................496 Mode ........................................................................553
DTC P1320 IGNITION SIGNAL...................................499 ECM Terminals and Reference Value .....................553
Component Description ...........................................499 On Board Diagnosis Logic.......................................553
ECM Terminals and Reference Value .....................499 Possible Cause........................................................554
On Board Diagnosis Logic.......................................499 DTC Confirmation Procedure ..................................554
Possible Cause........................................................500 Wiring Diagram ........................................................555
DTC Confirmation Procedure ..................................500 Diagnostic Procedure ..............................................556
Wiring Diagram ........................................................501 DTC P1447 EVAPORATIVE EMISSION (EVAP)
Diagnostic Procedure ..............................................504 CONTROL SYSTEM PURGE FLOW
DTC P1335 CRANKSHAFT POSITION SENSOR MONITORING ..............................................................561
(CKPS) (REF) ..............................................................510 System Description..................................................561
Component Description ...........................................510 On Board Diagnosis Logic.......................................561
CONSULT-II Reference Value in Data Monitor Possible Cause........................................................561
Mode ........................................................................510 DTC Confirmation Procedure ..................................562
ECM Terminals and Reference Value .....................510 Overall Function Check ...........................................563
On Board Diagnosis Logic.......................................511 Diagnostic Procedure ..............................................564
Possible Cause........................................................511 DTC P1448 EVAPORATIVE EMISSION (EVAP)
DTC Confirmation Procedure ..................................511 CANISTER VENT CONTROL VALVE (OPEN)...........573
Wiring Diagram ........................................................513 Component Description ...........................................573
Diagnostic Procedure ..............................................514 CONSULT-II Reference Value in Data Monitor
DTC P1336 CRANKSHAFT POSITION SENSOR Mode ........................................................................573
(CKPS) (POS) (COG) ..................................................517 ECM Terminals and Reference Value .....................573
Component Description ...........................................517 On Board Diagnosis Logic.......................................573
CONSULT-II Reference Value in Data Monitor Possible Cause........................................................574
Mode ........................................................................517 DTC Confirmation Procedure ..................................574
ECM Terminals and Reference Value .....................518 Overall Function Check ...........................................575
On Board Diagnosis Logic.......................................518 Wiring Diagram ........................................................576
Possible Cause........................................................518 Diagnostic Procedure ..............................................577
DTC Confirmation Procedure ..................................519 DTC P1464 FUEL LEVEL SENSOR CIRCUIT
Wiring Diagram ........................................................520 (GROUND SIGNAL) ....................................................582
Diagnostic Procedure ..............................................521 Component Description ...........................................582
DTC P1441 EVAP CONTROL SYSTEM (VERY On Board Diagnostic Logic......................................582
SMALL LEAK) .............................................................526 Possible Cause........................................................582
On Board Diagnosis Logic.......................................526 DTC Confirmation Procedure ..................................582
Possible Cause........................................................526 Wiring Diagram ........................................................583
DTC Confirmation Procedure ..................................527 Diagnostic Procedure ..............................................584
Diagnostic Procedure ..............................................529 DTC P1490 VACUUM CUT VALVE BYPASS
DTC P1444 EVAP CANISTER PURGE VOLUME VALVE (CIRCUIT)........................................................585
CONTROL SOLENOID VALVE...................................541 Description ...............................................................585
Description ...............................................................541
EC-6
CONTENTS (Cont'd)
CONSULT-II Reference Value in Data Monitor Diagnostic Procedure ..............................................618 GI
Mode ........................................................................585 START SIGNAL...........................................................621
ECM Terminals and Reference Value .....................585 CONSULT-II Reference Value in Data Monitor
On Board Diagnosis Logic.......................................586 Mode ........................................................................621 MA
Possible Cause........................................................586 ECM Terminals and Reference Value .....................621
DTC Confirmation Procedure ..................................586 Wiring Diagram ........................................................622
Wiring Diagram ........................................................587 Diagnostic Procedure ..............................................623
EM
Diagnostic Procedure ..............................................588 FUEL PUMP.................................................................625
DTC P1491 VACUUM CUT VALVE BYPASS System Description..................................................625 LC
VALVE..........................................................................591 Component Description ...........................................625
Description ...............................................................591 CONSULT-II Reference Value in Data Monitor
CONSULT-II Reference Value in Data Monitor Mode ........................................................................625
Mode ........................................................................591 ECM Terminals and Reference Value .....................626
ECM Terminals and Reference Value .....................591 Wiring Diagram ........................................................627
On Board Diagnosis Logic.......................................592 Diagnostic Procedure ..............................................628 FE
Possible Cause........................................................592 POWER STEERING OIL PRESSURE SWITCH.........634
DTC Confirmation Procedure ..................................592 Component Description ...........................................634 AT
Overall Function Check ...........................................593 CONSULT-II Reference Value in Data Monitor
Wiring Diagram ........................................................594 Mode ........................................................................634
Diagnostic Procedure ..............................................595 ECM Terminals and Reference Value .....................634 TF
DTC P1605 A/T DIAGNOSIS COMMUNICATION Wiring Diagram ........................................................635
LINE .............................................................................603 Diagnostic Procedure ..............................................636
Component Description ...........................................603 REFRIGERANT PRESSURE SENSOR ......................639 PD
On Board Diagnosis Logic.......................................603 Description ...............................................................639
Possible Cause........................................................603 ECM Terminals and Reference Value .....................639
AX
DTC Confirmation Procedure ..................................603 Wiring Diagram ........................................................640
DTC P1706 PARK/NEUTRAL POSITION (PNP) Diagnostic Procedure ..............................................641
SWITCH .......................................................................604 ELECTRICAL LOAD SIGNAL.....................................643 SU
Component Description ...........................................604 ECM Terminals and Reference Value .....................643
CONSULT-II Reference Value in Data Monitor Wiring Diagram ........................................................644
Mode ........................................................................604 Diagnostic Procedure ..............................................645 BR
ECM Terminals and Reference Value .....................604 MIL & DATA LINK CONNECTORS ............................648
On Board Diagnosis Logic.......................................604 Wiring Diagram ........................................................648
Possible Cause........................................................604 SERVICE DATA AND SPECIFICATIONS (SDS) .......649
ST
DTC Confirmation Procedure ..................................605 Fuel Pressure Regulator..........................................649
Overall Function Check ...........................................606 Idle Speed and Ignition Timing................................649 RS
Wiring Diagram ........................................................607 Mass Air Flow Sensor..............................................649
Diagnostic Procedure ..............................................608 Engine Coolant Temperature Sensor ......................649
VARIABLE INDUCTION AIR CONTROL SYSTEM Heated Oxygen Sensor 1 Heater (Front) ................649 BT
(VIAS)...........................................................................610 Fuel Pump ...............................................................649
Description ...............................................................610 IACV-AAC Valve ......................................................649
ECM Terminals and Reference Value .....................611 Injector .....................................................................649 HA
Wiring Diagram ........................................................612 Resistor....................................................................649
Diagnostic Procedure ..............................................613 Throttle Position Sensor ..........................................650
SC
INJECTOR ...................................................................616 Calculated Load Value.............................................650
Component Description ...........................................616 Intake Air Temperature Sensor................................650
CONSULT-II Reference Value in Data Monitor Heated Oxygen Sensor 2 Heater (Rear).................650 EL
Mode ........................................................................616 Crankshaft Position Sensor (REF) ..........................650
ECM Terminals and Reference Value .....................616 Fuel Tank Temperature Sensor ...............................650
Wiring Diagram ........................................................617 Camshaft Position Sensor (PHASE) .......................650 IDX
EC-7
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC
Alphabetical & P No. Index for DTC NBEC0001
ALPHABETICAL INDEX FOR DTC NBEC0001S01
Items
DTC*1 Reference page
(CONSULT-II screen terms)
Unable to access ECM -- EC-117
ABSL PRES SEN/CIRC P0105 EC-158
AIR TEMP SEN/CIRC P0110 EC-164
A/T 1ST GR FNCTN P0731 AT-136
A/T 2ND GR FNCTN P0732 AT-143
A/T 3RD GR FNCTN P0733 AT-151
A/T 4TH GR FNCTN P0734 AT-157
A/T COMM LINE P0600*2 EC-440
A/T DIAG COMM LINE P1605 EC-603
A/T TCC S/V FNCTN P0744 AT-170
ATF TEMP SEN/CIRC P0710 AT-116
CAM PS/CIRC (PHS) P0340 EC-342
CLOSED LOOP-B1 P1148 EC-491
CLOSED LOOP-B2 P1168 EC-491
CLOSED TP SW/CIRC P0510 EC-431
COOLANT T SEN/CIRC*3 P0115 EC-169
*COOLANT T SEN/CIRC P0125 EC-187
CPS/CIRC (POS) COG P1336 EC-517
CPS/CIRCUIT (POS) P0335 EC-334
CPS/CIRCUIT (REF) P1335 EC-510
CYL 1 MISFIRE P0301 EC-320
CYL 2 MISFIRE P0302 EC-320
CYL 3 MISFIRE P0303 EC-320
CYL 4 MISFIRE P0304 EC-320
CYL 5 MISFIRE P0305 EC-320
CYL 6 MISFIRE P0306 EC-320
ECM P0605 EC-444
ENGINE SPEED SIG P0725 AT-130
ENG OVER TEMP P0217 EC-314
ENG OVER TEMP P1217 LC-24
EVAP GROSS LEAK P0455 EC-394
EVAP PURG FLOW/MON P1447 EC-561
EVAP SYS PRES SEN P0450 EC-381
EVAP SMALL LEAK P0440 EC-352
EVAP VERY SMALL LEAK P1441 EC-526
EC-8
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC (Cont'd)
Items
DTC*1 Reference page
(CONSULT-II screen terms)
GI
FUEL LEVL SEN/CIRC P0464 EC-413
FUEL LEVL SEN/CIRC P1464 EC-582
MA
FUEL LEVEL SENSOR P0461 EC-411
FUEL LV SE (SLOSH) P0460 EC-407
EM
FUEL SYS-LEAN/BK1 P0171 EC-294
FUEL SYS-LEAN/BK2 P0174 EC-294 LC
FUEL SYS-RICH/BK1 P0172 EC-302
FUEL SYS-RICH/BK2 P0175 EC-302
FUEL TEMP SEN/CIRC P0180 EC-309
HO2S1 HTR (B1) P0135 EC-240 FE
HO2S1 HTR (B2) P0155 EC-240
HO2S1 (B1) P0130 EC-192 AT
HO2S1 (B1) P0131 EC-202
HO2S1 (B1) P0132 EC-210 TF
HO2S1 (B1) P0133 EC-218
HO2S1 (B1) P0134 EC-231
PD
HO2S1 (B2) P0150 EC-192
AX
HO2S1 (B2) P0151 EC-202
HO2S1 (B2) P0152 EC-210
SU
HO2S1 (B2) P0153 EC-218
HO2S1 (B2) P0154 EC-231
BR
HO2S2 (B1) P0137 EC-247
HO2S2 (B1) P0138 EC-257
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