Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti I30 A32 A33 1996-2001 Approved Infiniti I30 2000 ec

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                                                                                       ENGINE CONTROL SYSTEM
                                                                                                                                                                            GI


                                                                                                   SECTION                       EC                                         MA

                                                                                                                                                                            EM

                                                                                                                                                                            LC



                                                                 CONTENTS
                                                                                                                                                                            FE
TROUBLE DIAGNOSIS - INDEX ....................................8                        ON BOARD DIAGNOSTIC SYSTEM
  Alphabetical & P No. Index for DTC ...........................8                      DESCRIPTION ...............................................................69        AT
PRECAUTIONS .............................................................14              Introduction ................................................................69
  Supplemental Restraint System (SRS) AIR                                                Two Trip Detection Logic ...........................................69
  BAG and SEAT BELT PRE-TENSIONER.............14                                         Emission-related Diagnostic Information ...................70                      AX
  Precautions for On Board Diagnostic (OBD)                                              Malfunction Indicator Lamp (MIL)..............................84
  System of Engine and A/T.........................................14                    OBD System Operation Chart ...................................85
                                                                                                                                                                            SU
  Engine Fuel & Emission Control System ..................15                             CONSULT-II ...............................................................91
  Precautions ................................................................16         Generic Scan Tool (GST) ........................................104
  Wiring Diagrams and Trouble Diagnosis...................17                           TROUBLE DIAGNOSIS - INTRODUCTION................106                                  BR
PREPARATION .............................................................18              Introduction ..............................................................106
  Special Service Tools ................................................18               Work Flow................................................................108
  Commercial Service Tools .........................................18                 TROUBLE DIAGNOSIS - BASIC INSPECTION .........110                                    ST
ENGINE AND EMISSION CONTROL OVERALL                                                      Basic Inspection.......................................................110
SYSTEM.........................................................................20      TROUBLE DIAGNOSIS - GENERAL
  Engine Control Component Parts Location...............20                             DESCRIPTION .............................................................125
                                                                                                                                                                            RS
  Circuit Diagram ..........................................................24           DTC Inspection Priority Chart..................................125
  System Diagram ........................................................25              Fail-safe Chart .........................................................126       BT
  Vacuum Hose Drawing ..............................................26                   Symptom Diagnosis Procedure ...............................127
  System Chart .............................................................27           Symptom Matrix Chart.............................................134
ENGINE AND EMISSION BASIC CONTROL                                                        CONSULT-II Reference Value in Data Monitor                                         HA
SYSTEM DESCRIPTION ...............................................28                     Mode ........................................................................138
  Multiport Fuel Injection (MFI) System .......................28                        Major Sensor Reference Graph in Data Monitor
  Electronic Ignition (EI) System ..................................30                   Mode ........................................................................141   SC
  Air Conditioning Cut Control......................................31                   ECM Terminals and Reference Value .....................144
  Fuel Cut Control (at no load & high engine                                           TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..152                                        EL
  speed) ........................................................................32      Description ...............................................................152
  Evaporative Emission System ...................................32                      Testing Condition .....................................................152
  Positive Crankcase Ventilation ..................................48                    Inspection Procedure...............................................152             IDX
BASIC SERVICE PROCEDURE ...................................50                            Diagnostic Procedure ..............................................153
  Fuel Pressure Release ..............................................50               TROUBLE DIAGNOSIS FOR INTERMITTENT
  Fuel Pressure Check .................................................50              INCIDENT.....................................................................156
  Fuel Pressure Regulator Check ................................51                       Description ...............................................................156
  Injector .......................................................................52     Diagnostic Procedure ..............................................156
  How to Check Idle Speed and Ignition Timing..........53                              TROUBLE DIAGNOSIS FOR POWER SUPPLY........157
  Idle Speed/Ignition Timing/Idle Mixture Ratio                                          Main Power Supply and Ground Circuit..................157
  Adjustment .................................................................54       DTC P0100 MASS AIR FLOW SENSOR (MAFS)......164
  Idle Air Volume Learning ...........................................67                 Component Description ...........................................164
                                                     CONTENTS                                  (Cont'd)
  CONSULT-II Reference Value in Data Monitor                                           CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................164     Mode ........................................................................205
  On Board Diagnosis Logic.......................................164                   On Board Diagnosis Logic.......................................205
  Possible Cause........................................................165            Possible Cause........................................................205
  DTC Confirmation Procedure ..................................165                     DTC Confirmation Procedure ..................................206
  Overall Function Check ...........................................167                Overall Function Check ...........................................206
  Wiring Diagram ........................................................168           Wiring Diagram ........................................................208
  Diagnostic Procedure ..............................................169               Diagnostic Procedure ..............................................210
DTC P0105 ABSOLUTE PRESSURE SENSOR ........172                                       DTC P0131 (RIGHT, -B1), P0151 (LEFT, -B2)
  Component Description ...........................................172               FRONT HO2S (LEAN SHIFT MONITORING).............215
  On Board Diagnosis Logic.......................................172                   Component Description ...........................................215
  Possible Cause........................................................172            CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................172                     Mode ........................................................................215
  Wiring Diagram ........................................................174           On Board Diagnosis Logic.......................................215
  Diagnostic Procedure ..............................................175               Possible Cause........................................................215
DTC P0110 INTAKE AIR TEMPERATURE                                                       DTC Confirmation Procedure ..................................216
SENSOR ......................................................................178       Overall Function Check ...........................................217
  Component Description ...........................................178                 Diagnostic Procedure ..............................................217
  On Board Diagnosis Logic.......................................178                 DTC P0132 (RIGHT, -B1), P0152 (LEFT, -B2)
  Possible Cause........................................................178          FRONT HO2S (RICH SHIFT MONITORING)..............223
  DTC Confirmation Procedure ..................................178                     Component Description ...........................................223
  Wiring Diagram ........................................................180           CONSULT-II Reference Value in Data Monitor
  Diagnostic Procedure ..............................................181               Mode ........................................................................223
DTC P0115 ENGINE COOLANT TEMPERATURE                                                   On Board Diagnosis Logic.......................................223
SENSOR (ECTS) (CIRCUIT) .......................................183                     Possible Cause........................................................223
  Component Description ...........................................183                 DTC Confirmation Procedure ..................................224
  On Board Diagnosis Logic.......................................183                   Overall Function Check ...........................................225
  Possible Cause........................................................184            Diagnostic Procedure ..............................................225
  DTC Confirmation Procedure ..................................184                   DTC P0133 (RIGHT, -B1), P0153 (LEFT, -B2)
  Wiring Diagram ........................................................185         FRONT HO2S (RESPONSE MONITORING) ..............231
  Diagnostic Procedure ..............................................186               Component Description ...........................................231
DTC P0120 THROTTLE POSITION SENSOR ...........188                                      CONSULT-II Reference Value in Data Monitor
  Description ...............................................................188       Mode ........................................................................231
  CONSULT-II Reference Value in Data Monitor                                           On Board Diagnosis Logic.......................................231
  Mode ........................................................................188     Possible Cause........................................................231
  On Board Diagnosis Logic.......................................189                   DTC Confirmation Procedure ..................................232
  Possible Cause........................................................189            Overall Function Check ...........................................233
  DTC Confirmation Procedure ..................................189                     Wiring Diagram ........................................................234
  Wiring Diagram ........................................................193           Diagnostic Procedure ..............................................236
  Diagnostic Procedure ..............................................194             DTC P0134 (RIGHT, -B1), P0154 (LEFT, -B2)
DTC P0125 ENGINE COOLANT TEMPERATURE                                                 FRONT HO2S (HIGH VOLTAGE) ...............................244
SENSOR (ECTS) .........................................................200             Component Description ...........................................244
  Description ...............................................................200       CONSULT-II Reference Value in Data Monitor
  On Board Diagnosis Logic.......................................200                   Mode ........................................................................244
  Possible Cause........................................................201            On Board Diagnosis Logic.......................................244
  DTC Confirmation Procedure ..................................201                     Possible Cause........................................................244
  Wiring Diagram ........................................................202           DTC Confirmation Procedure ..................................245
  Diagnostic Procedure ..............................................203               Wiring Diagram ........................................................246
DTC P0130 (RIGHT, -B1), P0150 (LEFT, -B2)                                              Diagnostic Procedure ..............................................248
FRONT HO2S (CIRCUIT) ............................................205                 DTC P0135 (RIGHT, -B1), P0155 (LEFT, -B2)
  Component Description ...........................................205               FRONT HO2S HEATER ..............................................252
                                                                                       Description ...............................................................252




                                                                                EC-2
                                                     CONTENTS                                  (Cont'd)
  CONSULT-II Reference Value in Data Monitor                                         DTC P0141 (RIGHT, -B1), P0161 (LEFT, -B2)
  Mode ........................................................................252   REAR HO2S HEATER ................................................297
  On Board Diagnosis Logic.......................................252                   Description ...............................................................297     GI
  Possible Cause........................................................252            CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................253                     Mode ........................................................................297   MA
  Wiring Diagram ........................................................254           On Board Diagnosis Logic.......................................297
  Diagnostic Procedure ..............................................256               Possible Cause........................................................297
DTC P0137 (RIGHT, -B1), P0157 (LEFT, -B2)                                              DTC Confirmation Procedure ..................................298                   EM
REAR HO2S (MIN. VOLTAGE MONITORING) ..........259                                      Wiring Diagram ........................................................299
  Component Description ...........................................259                 Diagnostic Procedure ..............................................301
  CONSULT-II Reference Value in Data Monitor                                         DTC P0171 (RIGHT, -B1), P0174 (LEFT, -B2)                                            LC
  Mode ........................................................................259   FUEL INJECTION SYSTEM FUNCTION (LEAN).......304
  On Board Diagnosis Logic.......................................259                   On Board Diagnosis Logic.......................................304
  Possible Cause........................................................259            Possible Cause........................................................304
  DTC Confirmation Procedure ..................................260                     DTC Confirmation Procedure ..................................304
  Overall Function Check ...........................................260                Wiring Diagram ........................................................306         FE
  Wiring Diagram ........................................................262           Diagnostic Procedure ..............................................308
  Diagnostic Procedure ..............................................264             DTC P0172 (RIGHT, -B1), P0175 (LEFT, -B2)
DTC P0138 (RIGHT, -B1), P0158 (LEFT, -B2)                                            FUEL INJECTION SYSTEM FUNCTION (RICH)........312                                     AT
REAR HO2S (MAX. VOLTAGE MONITORING).........269                                        On Board Diagnosis Logic.......................................312
  Component Description ...........................................269                 Possible Cause........................................................312
  CONSULT-II Reference Value in Data Monitor                                           DTC Confirmation Procedure ..................................312
                                                                                                                                                                          AX
  Mode ........................................................................269     Wiring Diagram ........................................................314
  On Board Diagnosis Logic.......................................269                   Diagnostic Procedure ..............................................316             SU
  Possible Cause........................................................269          DTC P0180 FUEL TANK TEMPERATURE
  DTC Confirmation Procedure ..................................270                   SENSOR ......................................................................319
  Overall Function Check ...........................................270                Component Description ...........................................319               BR
  Wiring Diagram ........................................................272           On Board Diagnosis Logic.......................................319
  Diagnostic Procedure ..............................................274               Possible Cause........................................................319
DTC P0139 (RIGHT, -B1), P0159 (LEFT, -B2)                                              DTC Confirmation Procedure ..................................320                   ST
REAR HO2S (RESPONSE MONITORING) ................279                                    Wiring Diagram ........................................................321
  Component Description ...........................................279                 Diagnostic Procedure ..............................................322
                                                                                                                                                                          RS
  CONSULT-II Reference Value in Data Monitor                                         DTC P0217 COOLANT OVERTEMPERATURE
  Mode ........................................................................279   ENRICHMENT PROTECTION.....................................324
  On Board Diagnosis Logic.......................................279                   System Description..................................................324            BT
  Possible Cause........................................................279            CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................280                     Mode ........................................................................324
  Overall Function Check ...........................................280                On Board Diagnosis Logic.......................................325                 HA
  Wiring Diagram ........................................................282           Possible Cause........................................................325
  Diagnostic Procedure ..............................................284               Overall Function Check ...........................................325
DTC P0140 (RIGHT, -B1), P0160 (LEFT, -B2)                                              Wiring Diagram ........................................................328
                                                                                                                                                                          SC
REAR HO2S (HIGH VOLTAGE) .................................289                          Diagnostic Procedure ..............................................330
  Component Description ...........................................289                 Main 12 Causes of Overheating..............................341                     EL
  CONSULT-II Reference Value in Data Monitor                                         DTC P0300 - P0306 NO. 6 - 1 CYLINDER
  Mode ........................................................................289   MISFIRE, MULTIPLE CYLINDER MISFIRE ...............342
  On Board Diagnosis Logic.......................................289                   On Board Diagnosis Logic.......................................342                 IDX
  Possible Cause........................................................289            Possible Cause........................................................342
  DTC Confirmation Procedure ..................................289                     DTC Confirmation Procedure ..................................343
  Overall Function Check ...........................................290                Diagnostic Procedure ..............................................343
  Wiring Diagram ........................................................291         DTC P0325 KNOCK SENSOR (KS) ...........................350
  Diagnostic Procedure ..............................................293               Component Description ...........................................350
                                                                                       On Board Diagnosis Logic.......................................350




                                                                                EC-3
                                                     CONTENTS                                   (Cont'd)
   Possible Cause........................................................350            DTC Confirmation Procedure ..................................392
   DTC Confirmation Procedure ..................................350                     Diagnostic Procedure ..............................................393
   Wiring Diagram ........................................................351         DTC P0443 EVAP CANISTER PURGE VOLUME
   Diagnostic Procedure ..............................................352             CONTROL SOLENOID VALVE (CIRCUIT).................406
DTC P0335 CRANKSHAFT POSITION SENSOR                                                    Description ...............................................................406
(CKPS) (POS) ..............................................................355          CONSULT-II Reference Value in Data Monitor
   Component Description ...........................................355                 Mode ........................................................................406
   CONSULT-II Reference Value in Data Monitor                                           On Board Diagnosis Logic.......................................407
   Mode ........................................................................355     Possible Cause........................................................407
   On Board Diagnosis Logic.......................................355                   DTC Confirmation Procedure ..................................407
   Possible Cause........................................................355            Wiring Diagram ........................................................408
   DTC Confirmation Procedure ..................................356                     Diagnostic Procedure ..............................................409
   Wiring Diagram ........................................................357         DTC P0446 EVAPORATIVE EMISSION (EVAP)
   Diagnostic Procedure ..............................................358             CANISTER VENT CONTROL VALVE (CIRCUIT) ......412
DTC P0340 CAMSHAFT POSITION SENSOR                                                      Component Description ...........................................412
(CMPS) (PHASE).........................................................363              CONSULT-II Reference Value in Data Monitor
   Component Description ...........................................363                 Mode ........................................................................412
   On Board Diagnosis Logic.......................................363                   On Board Diagnosis Logic.......................................412
   Possible Cause........................................................363            Possible Cause........................................................412
   DTC Confirmation Procedure ..................................363                     DTC Confirmation Procedure ..................................413
   Wiring Diagram ........................................................365           Wiring Diagram ........................................................414
   Diagnostic Procedure ..............................................366               Diagnostic Procedure ..............................................415
DTC P0400 EGR FUNCTION (CLOSE)......................369                               DTC P0450 EVAPORATIVE EMISSION (EVAP)
   Description ...............................................................369     CONTROL SYSTEM PRESSURE SENSOR ..............419
   CONSULT-II Reference Value in Data Monitor                                           Component Description ...........................................419
   Mode ........................................................................370     CONSULT-II Reference Value in Data Monitor
   On Board Diagnosis Logic.......................................370                   Mode ........................................................................419
   Possible Cause........................................................370            On Board Diagnosis Logic.......................................419
   DTC Confirmation Procedure ..................................371                     Possible Cause........................................................419
   Wiring Diagram ........................................................373           DTC Confirmation Procedure ..................................420
   Diagnostic Procedure ..............................................374               Wiring Diagram ........................................................421
DTC P0403 EGR VOLUME CONTROL VALVE                                                      Diagnostic Procedure ..............................................422
(CIRCUIT).....................................................................378     DTC P0455 EVAP CONTROL SYSTEM (GROSS
   Description ...............................................................378     LEAK)...........................................................................431
   CONSULT-II Reference Value in Data Monitor                                           On Board Diagnosis Logic.......................................431
   Mode ........................................................................379     Possible Cause........................................................431
   On Board Diagnosis Logic.......................................379                   DTC Confirmation Procedure ..................................432
   Possible Cause........................................................379            Diagnostic Procedure ..............................................433
   DTC Confirmation Procedure ..................................379                   DTC P0460 FUEL LEVEL SENSOR FUNCTION
   Wiring Diagram ........................................................381         (SLOSH).......................................................................444
   Diagnostic Procedure ..............................................382               Component Description ...........................................444
DTC P0420 (RIGHT BANK, -B1), P0430 (LEFT                                                On Board Diagnostic Logic......................................444
BANK, -B2) THREE WAY CATALYST FUNCTION...385                                            Possible Cause........................................................444
   On Board Diagnosis Logic.......................................385                   DTC Confirmation Procedure ..................................444
   Possible Cause........................................................385            Wiring Diagram ........................................................445
   DTC Confirmation Procedure ..................................386                     Diagnostic Procedure ..............................................446
   Overall Function Check ...........................................386              DTC P0461 FUEL LEVEL SENSOR FUNCTION .......448
   Diagnostic Procedure ..............................................387               Component Description ...........................................448
DTC P0440 EVAP CONTROL SYSTEM (SMALL                                                    On Board Diagnostic Logic......................................448
LEAK) (NEGATIVE PRESSURE)................................390                            Possible Cause........................................................448
   On Board Diagnosis Logic.......................................390                   Overall Function Check ...........................................448
   Possible Cause........................................................390          DTC P0464 FUEL LEVEL SENSOR CIRCUIT ...........450




                                                                                 EC-4
                                                     CONTENTS                                  (Cont'd)
  Component Description ...........................................450                 Diagnostic Procedure ..............................................482
  On Board Diagnostic Logic......................................450                 DTC P1130 SWIRL CONTROL VALVE CONTROL
  Possible Cause........................................................450          SOLENOID VALVE......................................................483              GI
  DTC Confirmation Procedure ..................................450                     Description ...............................................................483
  Wiring Diagram ........................................................451           CONSULT-II Reference Value in Data Monitor                                         MA
  Diagnostic Procedure ..............................................452               Mode ........................................................................484
DTC P0500 VEHICLE SPEED SENSOR (VSS) .........454                                      On Board Diagnosis Logic.......................................484
  Component Description ...........................................454                 Possible Cause........................................................484          EM
  On Board Diagnosis Logic.......................................454                   DTC Confirmation Procedure ..................................485
  Possible Cause........................................................454            Wiring Diagram ........................................................487
  DTC Confirmation Procedure ..................................454                     Diagnostic Procedure ..............................................488             LC
  Overall Function Check ...........................................455              DTC P1148 (RIGHT BANK, -B1), P1168 (LEFT
  Wiring Diagram ........................................................456         BANK, -B2) CLOSED LOOP CONTROL ...................507
  Diagnostic Procedure ..............................................457               On Board Diagnosis Logic.......................................507
DTC P0505 IDLE AIR CONTROL VALVE (IACV) -                                              Possible Cause........................................................507
AUXILIARY AIR CONTROL (AAC) VALVE ...............458                                   DTC Confirmation Procedure ..................................507                   FE
  Description ...............................................................458       Overall Function Check ...........................................508
  CONSULT-II Reference Value in Data Monitor                                           Diagnostic Procedure ..............................................508
  Mode ........................................................................459   DTC P1165 SWIRL CONTROL VALVE CONTROL                                                AT
  On Board Diagnosis Logic.......................................459                 VACUUM CHECK SWITCH.........................................509
  Possible Cause........................................................459            Component Description ...........................................509
  DTC Confirmation Procedure ..................................459                     CONSULT-II Reference Value in Data Monitor
                                                                                                                                                                          AX
  Wiring Diagram ........................................................461           Mode ........................................................................509
  Diagnostic Procedure ..............................................462               On Board Diagnosis Logic.......................................509                 SU
DTC P0510 CLOSED THROTTLE POSITION                                                     Possible Cause........................................................509
SWITCH .......................................................................467      DTC Confirmation Procedure ..................................510
  Component Description ...........................................467                 Wiring Diagram ........................................................511         BR
  CONSULT-II Reference Value in Data Monitor                                           Diagnostic Procedure ..............................................512
  Mode ........................................................................467   DTC P1211 ABS/TCS CONTROL UNIT .....................515
  On Board Diagnosis Logic.......................................467                   Description ...............................................................515     ST
  Possible Cause........................................................467            On Board Diagnosis Logic.......................................515
  DTC Confirmation Procedure ..................................468                     Possible Cause........................................................515
                                                                                                                                                                          RS
  Overall Function Check ...........................................468                DTC Confirmation Procedure ..................................515
  Wiring Diagram ........................................................470           Overall Function Check ...........................................516
  Diagnostic Procedure ..............................................471               Diagnostic Procedure ..............................................516             BT
DTC P0600 A/T COMMUNICATION LINE..................476                                DTC P1212 ABS/TCS COMMUNICATION LINE........517
  System Description..................................................476              Description ...............................................................517
  On Board Diagnosis Logic.......................................476                   On Board Diagnosis Logic.......................................517                 HA
  Possible Cause........................................................476            Possible Cause........................................................517
  DTC Confirmation Procedure ..................................476                     DTC Confirmation Procedure ..................................517
  Wiring Diagram ........................................................477           Wiring Diagram ........................................................518
                                                                                                                                                                          SC
  Diagnostic Procedure ..............................................478               Diagnostic Procedure ..............................................519
DTC P0605 ECM .........................................................479           DTC P1217 ENGINE OVER TEMPERATURE                                                    EL
  Component Description ...........................................479               (OVERHEAT) ...............................................................520
  On Board Diagnosis Logic.......................................479                   System Description..................................................520
  Possible Cause........................................................479            CONSULT-II Reference Value in Data Monitor                                         IDX
  DTC Confirmation Procedure ..................................479                     Mode ........................................................................520
  Diagnostic Procedure ..............................................480               On Board Diagnosis Logic.......................................521
DTC P1126 THERMOSTAT FUNCTION.....................481                                  Possible Cause........................................................521
  On Board Diagnosis Logic.......................................481                   Overall Function Check ...........................................521
  Possible Cause........................................................481            Wiring Diagram ........................................................523
  DTC Confirmation Procedure ..................................481                     Diagnostic Procedure ..............................................525




                                                                                EC-5
                                                     CONTENTS                                  (Cont'd)
  Main 12 Causes of Overheating..............................536                       Description ...............................................................581
DTC P1320 IGNITION SIGNAL...................................537                        CONSULT-II Reference Value in Data Monitor
  Component Description ...........................................537                 Mode ........................................................................581
  On Board Diagnosis Logic.......................................537                   On Board Diagnosis Logic.......................................582
  Possible Cause........................................................537            Possible Cause........................................................582
  DTC Confirmation Procedure ..................................537                     DTC Confirmation Procedure ..................................582
  Wiring Diagram ........................................................539           Wiring Diagram ........................................................584
  Diagnostic Procedure ..............................................542               Diagnostic Procedure ..............................................585
DTC P1335 CRANKSHAFT POSITION SENSOR                                                 DTC P1446 EVAPORATIVE EMISSION (EVAP)
(CKPS) (REF) ..............................................................548       CANISTER VENT CONTROL VALVE (CLOSE).........593
  Component Description ...........................................548                 Component Description ...........................................593
  CONSULT-II Reference Value in Data Monitor                                           CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................548     Mode ........................................................................593
  On Board Diagnosis Logic.......................................548                   On Board Diagnosis Logic.......................................593
  Possible Cause........................................................549            Possible Cause........................................................593
  DTC Confirmation Procedure ..................................549                     DTC Confirmation Procedure ..................................594
  Wiring Diagram ........................................................550           Wiring Diagram ........................................................595
  Diagnostic Procedure ..............................................551               Diagnostic Procedure ..............................................596
DTC P1336 CRANKSHAFT POSITION SENSOR                                                 DTC P1447 EVAPORATIVE EMISSION (EVAP)
(CKPS) (POS) (COG) ..................................................554             CONTROL SYSTEM PURGE FLOW
  Component Description ...........................................554               MONITORING ..............................................................601
  CONSULT-II Reference Value in Data Monitor                                           System Description..................................................601
  Mode ........................................................................554     On Board Diagnosis Logic.......................................601
  On Board Diagnosis Logic.......................................554                   Possible Cause........................................................601
  Possible Cause........................................................554            DTC Confirmation Procedure ..................................602
  DTC Confirmation Procedure ..................................555                     Overall Function Check ...........................................602
  Wiring Diagram ........................................................556           Diagnostic Procedure ..............................................604
  Diagnostic Procedure ..............................................557             DTC P1448 EVAPORATIVE EMISSION (EVAP)
DTC P1401 EGR TEMPERATURE SENSOR.............562                                     CANISTER VENT CONTROL VALVE (OPEN)...........613
  Component Description ...........................................562                 Component Description ...........................................613
  On Board Diagnosis Logic.......................................562                   CONSULT-II Reference Value in Data Monitor
  Possible Cause........................................................562            Mode ........................................................................613
  DTC Confirmation Procedure ..................................563                     On Board Diagnosis Logic.......................................613
  Wiring Diagram ........................................................565           Possible Cause........................................................613
  Diagnostic Procedure ..............................................566               DTC Confirmation Procedure ..................................614
DTC P1402 EGR FUNCTION (OPEN) ........................570                              Overall Function Check ...........................................615
  Description ...............................................................570       Wiring Diagram ........................................................616
  CONSULT-II Reference Value in Data Monitor                                           Diagnostic Procedure ..............................................617
  Mode ........................................................................571   DTC P1464 FUEL LEVEL SENSOR CIRCUIT
  On Board Diagnosis Logic.......................................571                 (GROUND SIGNAL) ....................................................622
  Possible Cause........................................................571            Component Description ...........................................622
  DTC Confirmation Procedure ..................................572                     On Board Diagnostic Logic......................................622
  Wiring Diagram ........................................................573           Possible Cause........................................................622
  Diagnostic Procedure ..............................................574               DTC Confirmation Procedure ..................................622
DTC P1440 EVAP CONTROL SYSTEM (SMALL                                                   Wiring Diagram ........................................................623
LEAK) (POSITIVE PRESSURE) .................................579                         Diagnostic Procedure ..............................................624
  On Board Diagnosis Logic.......................................579                 DTC P1490 VACUUM CUT VALVE BYPASS
  Possible Cause........................................................579          VALVE (CIRCUIT)........................................................625
  DTC Confirmation Procedure ..................................580                     Description ...............................................................625
  Diagnostic Procedure ..............................................580               CONSULT-II Reference Value in Data Monitor
DTC P1444 EVAP CANISTER PURGE VOLUME                                                   Mode ........................................................................625
CONTROL SOLENOID VALVE...................................581                           On Board Diagnosis Logic.......................................625




                                                                                EC-6
                                                       CONTENTS                                   (Cont'd)
   Possible Cause........................................................626              Wiring Diagram ........................................................664
   DTC Confirmation Procedure ..................................626                       Diagnostic Procedure ..............................................665
   Wiring Diagram ........................................................627           FUEL PUMP.................................................................667         GI
   Diagnostic Procedure ..............................................628                 System Description..................................................667
DTC P1491 VACUUM CUT VALVE BYPASS                                                         Component Description ...........................................667                MA
VALVE..........................................................................631        CONSULT-II Reference Value in Data Monitor
   Description ...............................................................631         Mode ........................................................................667
   CONSULT-II Reference Value in Data Monitor                                             Wiring Diagram ........................................................668          EM
   Mode ........................................................................631       Diagnostic Procedure ..............................................669
   On Board Diagnosis Logic.......................................631                   ELECTRONIC CONTROLLED ENGINE MOUNT.......673
   Possible Cause........................................................632              System Description..................................................673             LC
   DTC Confirmation Procedure ..................................632                       CONSULT-II Reference Value in Data Monitor
   Overall Function Check ...........................................633                  Mode ........................................................................673
   Wiring Diagram ........................................................634             Wiring Diagram ........................................................674
   Diagnostic Procedure ..............................................635                 Diagnostic Procedure ..............................................675
DTC P1605 A/T DIAGNOSIS COMMUNICATION                                                   POWER STEERING OIL PRESSURE SWITCH.........677                                        FE
LINE .............................................................................643     Component Description ...........................................677
   Component Description ...........................................643                   CONSULT-II Reference Value in Data Monitor
   On Board Diagnosis Logic.......................................643                     Mode ........................................................................677    AT
   Possible Cause........................................................643              Wiring Diagram ........................................................678
   DTC Confirmation Procedure ..................................643                       Diagnostic Procedure ..............................................679
   Wiring Diagram ........................................................644           REFRIGERANT PRESSURE SENSOR ......................682
                                                                                                                                                                              AX
   Diagnostic Procedure ..............................................645                 Description ...............................................................682
DTC P1706 PARK/NEUTRAL POSITION (PNP)                                                     Wiring Diagram ........................................................683          SU
SWITCH .......................................................................646         Diagnostic Procedure ..............................................684
   Component Description ...........................................646                 ELECTRICAL LOAD SIGNAL.....................................686
   CONSULT-II Reference Value in Data Monitor                                             Wiring Diagram ........................................................686          BR
   Mode ........................................................................646       Diagnostic Procedure ..............................................688
   On Board Diagnosis Logic.......................................646                   MIL & DATA LINK CONNECTORS ............................692
   Possible Cause........................................................646              Wiring Diagram ........................................................692          ST
   DTC Confirmation Procedure ..................................646                     SERVICE DATA AND SPECIFICATIONS (SDS) .......693
   Overall Function Check ...........................................647                  Fuel Pressure Regulator..........................................693
                                                                                                                                                                              RS
   Wiring Diagram ........................................................648             Idle Speed and Ignition Timing................................693
   Diagnostic Procedure ..............................................649                 Mass Air Flow Sensor..............................................693
VARIABLE INDUCTION AIR CONTROL SYSTEM                                                     Engine Coolant Temperature Sensor ......................693                         BT
(VIAS)...........................................................................651      EGR Temperature Sensor .......................................693
   Description ...............................................................651         Front Heated Oxygen Sensor Heater......................693
   Wiring Diagram ........................................................653             Fuel Pump ...............................................................693        HA
   Diagnostic Procedure ..............................................654                 IACV-AAC Valve ......................................................693
INJECTOR ...................................................................657           Injector .....................................................................694
   Component Description ...........................................657                   Resistor....................................................................694
                                                                                                                                                                              SC
   CONSULT-II Reference Value in Data Monitor                                             Throttle Position Sensor ..........................................694
   Mode ........................................................................657       Calculated Load Value.............................................694               EL
   Wiring Diagram ........................................................658             Intake Air Temperature Sensor................................694
   Diagnostic Procedure ..............................................659                 Rear Heated Oxygen Sensor Heater ......................694
START SIGNAL...........................................................663                Crankshaft Position Sensor (REF) ..........................694                      IDX
   CONSULT-II Reference Value in Data Monitor                                             Fuel Tank Temperature Sensor ...............................694
   Mode ........................................................................663       Camshaft Position Sensor (PHASE) .......................694




                                                                                   EC-7
                                     TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC

                                              Alphabetical & P No. Index for DTC                NHEC0001
ALPHABETICAL INDEX FOR DTC                                                                    NHEC0001S01


                          Items
                                                              DTC*1          Reference page
                  (CONSULT-II screen terms)

 Unable to access ECM                                          --                  EC-126

 ABSL PRES SEN/CIRC                                           P0105                EC-172

 AIR TEMP SEN/CIRC                                            P0110                EC-178

 A/T 1ST GR FNCTN                                             P0731                 AT-124

 A/T 2ND GR FNCTN                                             P0732                 AT-130

 A/T 3RD GR FNCTN                                             P0733                 AT-136

 A/T 4TH GR FNCTN                                             P0734                 AT-142

 A/T COMM LINE                                               P0600*2               EC-476

 A/T DIAG COMM LINE                                           P1605                EC-643

 A/T TCC S/V FNCTN                                            P0744                 AT-156

 ATF TEMP SEN/CIRC                                            P0710                 AT-108

 CAM PS/CIRC (PHS)                                            P0340                EC-363

 CLOSED LOOP-B1                                               P1148                EC-507

 CLOSED LOOP-B2                                               P1168                EC-507

 CLOSED TP SW/CIRC                                            P0510                EC-467

 COOLANT T SEN/CIRC*3                                         P0115                EC-183

 *COOLANT T SEN/CIRC                                          P0125                EC-200

 CPS/CIRC (POS) COG                                           P1336                EC-554

 CPS/CIRCUIT (POS)                                            P0335                EC-355

 CPS/CIRCUIT (REF)                                            P1335                EC-548

 CYL 1 MISFIRE                                                P0301                EC-342

 CYL 2 MISFIRE                                                P0302                EC-342

 CYL 3 MISFIRE                                                P0303                EC-342

 CYL 4 MISFIRE                                                P0304                EC-342

 CYL 5 MISFIRE                                                P0305                EC-342

 CYL 6 MISFIRE                                                P0306                EC-342

 ECM                                                          P0605                EC-479

 EGR SYSTEM                                                   P0400                EC-369

 EGR SYSTEM                                                   P1402                EC-570

 EGR TEMP SEN/CIRC                                            P1401                EC-562

 EGR VOL CONT/V CIR                                           P0403                EC-378

 ENGINE SPEED SIG                                             P0725                 AT-119

 ENG OVER TEMP                                                P0217                EC-324

 ENG OVER TEMP                                               P1217*2               EC-520

 EVAP GROSS LEAK                                              P0455                EC-431



                                                   EC-8
                                TROUBLE DIAGNOSIS -- INDEX
                                                           Alphabetical & P No. Index for DTC (Cont'd)

                       Items
                                                      DTC*1                    Reference page
               (CONSULT-II screen terms)

EVAP PURG FLOW/MON                                    P1447                       EC-601
                                                                                                         GI
EVAP SYS PRES SEN                                     P0450                       EC-419

EVAP SMALL LEAK                                       P0440                       EC-390
                                                                                                         MA
EVAP SMALL LEAK                                       P1440                       EC-579

FR O2 SE HEATER-B1                                    P0135                       EC-252
                                                                                                         EM
FR O2 SE HEATER-B2                                    P0155                       EC-252

FRONT O2 SENSOR-B1                                    P0130                       EC-205
                                                                                                         LC
FRONT O2 SENSOR-B1                                    P0131                       EC-215

FRONT O2 SENSOR-B1                                    P0132                       EC-223

FRONT O2 SENSOR-B1                                    P0133                       EC-231

FRONT O2 SENSOR-B1                                    P0134                       EC-244                 FE
FRONT O2 SENSOR-B2                                    P0150                       EC-205

FRONT O2 SENSOR-B2                                    P0151                       EC-215                 AT
FRONT O2 SENSOR-B2                                    P0152                       EC-223

FRONT O2 SENSOR-B2                                    P0153                       EC-231                 AX
FRONT O2 SENSOR-B2                                    P0154                       EC-244

FUEL LEVL SEN/CIRC                                    P0464                       EC-450                 SU
FUEL LEVL SEN/CIRC                                    P1464                       EC-622

FUEL LEVEL SENSOR                                     P0461                       EC-448
                                                                                                         BR
FUEL LV SE (SLOSH)                                    P0460                       EC-444
                                                                                                         ST
FUEL SYS-LEAN/BK1                                     P0171                       EC-304

FUEL SYS-LEAN/BK2                                     P0174                       EC-304
                                                                                                         RS
FUEL SYS-RICH/BK1                                     P0172                       EC-312

FUEL SYS-RICH/BK2                                     P0175                       EC-312
                                                                                                         BT
FUEL TEMP SEN/CIRC                                    P0180                       EC-319

IACV/AAC VLV/CIRC                                     P0505                       EC-458
                                                                                                         HA
IGN SIGNAL-PRIMARY                                    P1320                       EC-537

KNOCK SEN/CIRC-B1                      



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