Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti I35 A33 2002-2004 Approved Infiniti I35 2003 ec

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                                                                                       ENGINE CONTROL SYSTEM
                                                                                                                                                                            GI


                                                                                                   SECTION                       EC                                         MA

                                                                                                                                                                            EM

                                                                                                                                                                            LC



                                                                 CONTENTS
                                                                                                                                                                            FE
TROUBLE DIAGNOSIS - INDEX ....................................9                          Idle Speed/Ignition Timing/Idle Mixture Ratio
  Alphabetical Index .......................................................9            Adjustment .................................................................59     AT
  DTC No. Index...........................................................13             Accelerator Pedal Released Position Learning.........71
PRECAUTIONS .............................................................18              Throttle Valve Closed Position Learning ...................71
  Supplemental Restraint System (SRS) AIR                                                Idle Air Volume Learning ...........................................71             AX
  BAG and SEAT BELT PRE-TENSIONER.............18                                       ON BOARD DIAGNOSTIC SYSTEM
  Precautions for On Board Diagnostic (OBD)                                            DESCRIPTION ...............................................................75
                                                                                                                                                                            SU
  System of Engine and A/T.........................................18                    Introduction ................................................................75
  Engine Fuel & Emission Control System ..................19                             Two Trip Detection Logic ...........................................75
  Precautions ................................................................20         Emission-related Diagnostic Information ...................76                      BR
  Wiring Diagrams and Trouble Diagnosis...................21                             Malfunction Indicator Lamp (MIL)..............................90
PREPARATION .............................................................22              OBD System Operation Chart ...................................94
  Special Service Tools ................................................22               CONSULT-II ...............................................................99       ST
  Commercial Service Tools .........................................22                   Generic Scan Tool (GST) ........................................113
ENGINE AND EMISSION CONTROL OVERALL                                                    TROUBLE DIAGNOSIS - INTRODUCTION................115
SYSTEM.........................................................................24        Introduction ..............................................................115
                                                                                                                                                                            RS
  Engine Control Component Parts Location...............24                               Work Flow................................................................117
  Circuit Diagram ..........................................................28         TROUBLE DIAGNOSIS - BASIC INSPECTION .........119                                    BT
  System Diagram ........................................................30              Basic Inspection.......................................................119
  Vacuum Hose Drawing ..............................................31                 TROUBLE DIAGNOSIS - GENERAL
  System Chart .............................................................32         DESCRIPTION .............................................................124         HA
ENGINE AND EMISSION BASIC CONTROL                                                        DTC Inspection Priority Chart..................................124
SYSTEM DESCRIPTION ...............................................33                     Fail-safe Chart .........................................................125
  Multiport Fuel Injection (MFI) System .......................33                        Symptom Matrix Chart.............................................126               SC
  Electronic Ignition (EI) System ..................................35                   CONSULT-II Reference Value in Data Monitor
  Air Conditioning Cut Control......................................36                   Mode ........................................................................130   EL
  Fuel Cut Control (at no load & high engine                                             Major Sensor Reference Graph in Data Monitor
  speed) ........................................................................37      Mode ........................................................................133
  Evaporative Emission System ...................................37                      ECM Terminals and Reference Value .....................136                         IDX
  On Board Refueling Vapor Recovery (ORVR) ..........43                                TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..147
  Positive Crankcase Ventilation ..................................52                    Description ...............................................................147
  CAN Communication .................................................53                  Testing Condition .....................................................147
  Automatic Speed Control Device (ASCD) System....54                                     Inspection Procedure...............................................147
BASIC SERVICE PROCEDURE ...................................56                            Diagnostic Procedure ..............................................148
  Fuel Pressure Release ..............................................56               TROUBLE DIAGNOSIS FOR INTERMITTENT
  Fuel Pressure Check .................................................56              INCIDENT.....................................................................151
  Injector .......................................................................57     Description ...............................................................151
  How to Check Idle Speed and Ignition Timing..........58                                Diagnostic Procedure ..............................................151
                                                                                       TROUBLE DIAGNOSIS FOR POWER SUPPLY........152
                                                     CONTENTS                                  (Cont'd)
  Main Power Supply and Ground Circuit..................152                          DTC P0107, P0108 ABSOLUTE PRESSURE
DTC U1000, U1001 CAN COMMUNICATION LINE...159                                        SENSOR ......................................................................197
  Description ...............................................................159       Component Description ...........................................197
  On Board Diagnosis Logic.......................................159                   On Board Diagnosis Logic.......................................197
  DTC Confirmation Procedure ..................................159                     DTC Confirmation Procedure ..................................197
  Wiring Diagram ........................................................160           Diagnostic Procedure ..............................................198
  Diagnostic Procedure ..............................................161             DTC P0112, P0113 IAT SENSOR ...............................199
DTC P0011, P0021 IVT CONTROL ............................162                           Component Description ...........................................199
  Description ...............................................................162       On Board Diagnosis Logic.......................................199
  CONSULT-II Reference Value in Data Monitor                                           DTC Confirmation Procedure ..................................199
  Mode ........................................................................163     Wiring Diagram ........................................................200
  On Board Diagnosis Logic.......................................163                   Diagnostic Procedure ..............................................201
  DTC Confirmation Procedure ..................................163                   DTC P0117, P0118 ECT SENSOR..............................203
  Wiring Diagram ........................................................165           Component Description ...........................................203
  Diagnostic Procedure ..............................................168               On Board Diagnosis Logic.......................................203
  Component Inspection.............................................170                 DTC Confirmation Procedure ..................................204
DTC P0031, P0032, P0051, P0052 HO2S1                                                   Wiring Diagram ........................................................205
HEATER.......................................................................171       Diagnostic Procedure ..............................................206
  Description ...............................................................171     DTC P0122, P0123 TP SENSOR................................208
  CONSULT-II Reference Value in Data Monitor                                           Component Description ...........................................208
  Mode ........................................................................171     CONSULT-II Reference Value in Data Monitor
  On Board Diagnosis Logic.......................................171                   Mode ........................................................................208
  DTC Confirmation Procedure ..................................172                     On Board Diagnosis Logic.......................................208
  Wiring Diagram ........................................................173           DTC Confirmation Procedure ..................................209
  Diagnostic Procedure ..............................................176               Wiring Diagram ........................................................210
DTC P0037, P0038, P0057, P0058 HO2S2                                                   Diagnostic Procedure ..............................................211
HEATER.......................................................................178       Component Inspection.............................................213
  Description ...............................................................178     DTC P0125 ECT SENSOR..........................................214
  CONSULT-II Reference Value in Data Monitor                                           Description ...............................................................214
  Mode ........................................................................178     On Board Diagnosis Logic.......................................214
  On Board Diagnosis Logic.......................................178                   DTC Confirmation Procedure ..................................215
  DTC Confirmation Procedure ..................................179                     Diagnostic Procedure ..............................................215
  Wiring Diagram ........................................................180         DTC P0127 IAT SENSOR ...........................................217
  Diagnostic Procedure ..............................................182               Component Description ...........................................217
DTC P0101 MAF SENSOR .........................................184                      On Board Diagnosis Logic.......................................217
  Component Description ...........................................184                 DTC Confirmation Procedure ..................................217
  CONSULT-II Reference Value in Data Monitor                                           Diagnostic Procedure ..............................................218
  Mode ........................................................................184   DTC P0128 THERMOSTAT FUNCTION.....................219
  On Board Diagnosis Logic.......................................184                   On Board Diagnosis Logic.......................................219
  DTC Confirmation Procedure ..................................184                     DTC Confirmation Procedure ..................................219
  Overall Function Check ...........................................186                Diagnostic Procedure ..............................................220
  Wiring Diagram ........................................................187         DTC P0132, P0152 HO2S1 .........................................221
  Diagnostic Procedure ..............................................188               Component Description ...........................................221
DTC P0102, P0103 MAF SENSOR.............................191                            CONSULT-II Reference Value in Data Monitor
  Component Description ...........................................191                 Mode ........................................................................221
  CONSULT-II Reference Value in Data Monitor                                           On Board Diagnosis Logic.......................................221
  Mode ........................................................................191     DTC Confirmation Procedure ..................................222
  On Board Diagnosis Logic.......................................191                   Wiring Diagram ........................................................223
  DTC Confirmation Procedure ..................................192                     Diagnostic Procedure ..............................................225
  Wiring Diagram ........................................................193         DTC P0133, P0153 HO2S1 .........................................229
  Diagnostic Procedure ..............................................194               Component Description ...........................................229




                                                                                EC-2
                                                     CONTENTS                                  (Cont'd)
  CONSULT-II Reference Value in Data Monitor                                           On Board Diagnosis Logic.......................................285
  Mode ........................................................................229     DTC Confirmation Procedure ..................................285
  On Board Diagnosis Logic.......................................229                   Wiring Diagram ........................................................287         GI
  DTC Confirmation Procedure ..................................230                     Diagnostic Procedure ..............................................288
  Overall Function Check ...........................................231              DTC P0222, P0223 TP SENSOR................................290                        MA
  Wiring Diagram ........................................................232           Component Description ...........................................290
  Diagnostic Procedure ..............................................234               CONSULT-II Reference Value in Data Monitor
DTC P0134, P0154 HO2S1 .........................................241                    Mode ........................................................................290   EM
  Component Description ...........................................241                 On Board Diagnosis Logic.......................................290
  CONSULT-II Reference Value in Data Monitor                                           DTC Confirmation Procedure ..................................291
  Mode ........................................................................241     Wiring Diagram ........................................................292         LC
  On Board Diagnosis Logic.......................................241                   Diagnostic Procedure ..............................................293
  DTC Confirmation Procedure ..................................242                     Component Inspection.............................................295
  Overall Function Check ...........................................243              DTC P0300 - P0306 MULTIPLE CYLINDER
  Wiring Diagram ........................................................244         MISFIRE, NO. 1 - 6 CYLINDER MISFIRE ..................296
  Diagnostic Procedure ..............................................246               On Board Diagnosis Logic.......................................296                 FE
DTC P0138, P0158 HO2S2 .........................................250                    DTC Confirmation Procedure ..................................297
  Component Description ...........................................250                 Diagnostic Procedure ..............................................298
  CONSULT-II Reference Value in Data Monitor                                         DTC P0327, P0328 KS................................................305               AT
  Mode ........................................................................250     Component Description ...........................................305
  On Board Diagnosis Logic.......................................250                   On Board Diagnosis Logic.......................................305
  DTC Confirmation Procedure ..................................251                     DTC Confirmation Procedure ..................................305
                                                                                                                                                                          AX
  Wiring Diagram ........................................................252           Wiring Diagram ........................................................306
  Diagnostic Procedure ..............................................254               Diagnostic Procedure ..............................................307             SU
DTC P0139, P0159 HO2S2 .........................................258                  DTC P0335 CKP SENSOR (POS) ..............................310
  Component Description ...........................................258                 Component Description ...........................................310
  CONSULT-II Reference Value in Data Monitor                                           CONSULT-II Reference Value in Data Monitor                                         BR
  Mode ........................................................................258     Mode ........................................................................310
  On Board Diagnosis Logic.......................................258                   On Board Diagnosis Logic.......................................310
  DTC Confirmation Procedure ..................................259                     DTC Confirmation Procedure ..................................311                   ST
  Overall Function Check ...........................................259                Wiring Diagram ........................................................312
  Wiring Diagram ........................................................261           Diagnostic Procedure ..............................................313
                                                                                                                                                                          RS
  Diagnostic Procedure ..............................................263               Component Inspection.............................................316
DTC P0171, P0174 FUEL INJECTION SYSTEM                                               DTC P0340, P0345 CMP SENSOR (PHASE) ............317
FUNCTION ...................................................................267        Component Description ...........................................317               BT
  On Board Diagnosis Logic.......................................267                   On Board Diagnosis Logic.......................................317
  DTC Confirmation Procedure ..................................267                     DTC Confirmation Procedure ..................................317
  Wiring Diagram ........................................................269           Wiring Diagram ........................................................319         HA
  Diagnostic Procedure ..............................................271               Diagnostic Procedure ..............................................321
DTC P0172, P0175 FUEL INJECTION SYSTEM                                                 Component Inspection.............................................325
FUNCTION ...................................................................275      DTC P0420, P0430 THREE WAY CATALYST
                                                                                                                                                                          SC
  On Board Diagnosis Logic.......................................275                 FUNCTION ...................................................................326
  DTC Confirmation Procedure ..................................275                     On Board Diagnosis Logic.......................................326                 EL
  Wiring Diagram ........................................................277           DTC Confirmation Procedure ..................................326
  Diagnostic Procedure ..............................................279               Overall Function Check ...........................................327
DTC P0181 FTT SENSOR ..........................................282                     Diagnostic Procedure ..............................................328             IDX
  Component Description ...........................................282               DTC P0441 EVAP CONTROL SYSTEM.....................331
  On Board Diagnosis Logic.......................................282                   System Description..................................................331
  DTC Confirmation Procedure ..................................282                     On Board Diagnosis Logic.......................................331
  Diagnostic Procedure ..............................................283               DTC Confirmation Procedure ..................................332
DTC P0182, P0183 FTT SENSOR..............................285                           Overall Function Check ...........................................332
  Component Description ...........................................285                 Diagnostic Procedure ..............................................334




                                                                                EC-3
                                                     CONTENTS                                   (Cont'd)
DTC P0442 EVAP CONTROL SYSTEM.....................341                                   DTC Confirmation Procedure ..................................412
  On Board Diagnosis Logic.......................................341                    Wiring Diagram ........................................................413
  DTC Confirmation Procedure ..................................342                      Diagnostic Procedure ..............................................414
  Diagnostic Procedure ..............................................343              DTC P0461 FUEL LEVEL SENSOR...........................416
DTC P0444, P0445 EVAP CANISTER PURGE                                                    Component Description ...........................................416
VOLUME CONTROL SOLENOID VALVE ..................356                                     On Board Diagnostic Logic......................................416
  Description ...............................................................356        Overall Function Check ...........................................416
  CONSULT-II Reference Value in Data Monitor                                          DTC P0462, P0463 FUEL LEVEL SENSOR ..............418
  Mode ........................................................................356      Component Description ...........................................418
  On Board Diagnosis Logic.......................................357                    On Board Diagnostic Logic......................................418
  DTC Confirmation Procedure ..................................357                      DTC Confirmation Procedure ..................................418
  Wiring Diagram ........................................................358            Wiring Diagram ........................................................419
  Diagnostic Procedure ..............................................360                Diagnostic Procedure ..............................................420
DTC P0447 EVAP CANISTER VENT CONTROL                                                  DTC P0500 VSS ..........................................................422
VALVE..........................................................................363      Component Description ...........................................422
  Component Description ...........................................363                  On Board Diagnosis Logic.......................................422
  CONSULT-II Reference Value in Data Monitor                                            DTC Confirmation Procedure ..................................422
  Mode ........................................................................363      Overall Function Check ...........................................423
  On Board Diagnosis Logic.......................................363                    Wiring Diagram ........................................................424
  DTC Confirmation Procedure ..................................363                      Diagnostic Procedure ..............................................425
  Wiring Diagram ........................................................365          DTC P0506 ISC SYSTEM ...........................................426
  Diagnostic Procedure ..............................................366                Description ...............................................................426
DTC P0452 EVAP SYSTEM PRESSURE SENSOR ..370                                             On Board Diagnosis Logic.......................................426
  Component Description ...........................................370                  DTC Confirmation Procedure ..................................426
  CONSULT-II Reference Value in Data Monitor                                            Diagnostic Procedure ..............................................427
  Mode ........................................................................370    DTC P0507 ISC SYSTEM ...........................................428
  On Board Diagnosis Logic.......................................370                    Description ...............................................................428
  DTC Confirmation Procedure ..................................370                      On Board Diagnosis Logic.......................................428
  Wiring Diagram ........................................................372            DTC Confirmation Procedure ..................................428
  Diagnostic Procedure ..............................................373                Diagnostic Procedure ..............................................429
DTC P0453 EVAP SYSTEM PRESSURE SENSOR ..376                                           DTC P0550 PSP SENSOR..........................................430
  Component Description ...........................................376                  Component Description ...........................................430
  CONSULT-II Reference Value in Data Monitor                                            CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................376      Mode ........................................................................430
  On Board Diagnosis Logic.......................................376                    On Board Diagnosis Logic.......................................430
  DTC Confirmation Procedure ..................................377                      DTC Confirmation Procedure ..................................430
  Wiring Diagram ........................................................378            Wiring Diagram ........................................................431
  Diagnostic Procedure ..............................................379                Diagnostic Procedure ..............................................432
DTC P0455 EVAP CONTROL SYSTEM (GROSS                                                    Component Inspection.............................................434
LEAK)...........................................................................385   DTC P0605 ECM .........................................................435
  On Board Diagnosis Logic.......................................385                    Component Description ...........................................435
  Possible Cause........................................................385             On Board Diagnosis Logic.......................................435
  DTC Confirmation Procedure ..................................386                      DTC Confirmation Procedure ..................................435
  Diagnostic Procedure ..............................................387                Diagnostic Procedure ..............................................436
DTC P0456 EVAP CONTROL SYSTEM.....................397                                 DTC P0650 MIL (CIRCUIT) .........................................437
  On Board Diagnosis Logic.......................................397                    Component Description ...........................................437
  DTC Confirmation Procedure ..................................398                      On Board Diagnosis Logic.......................................437
  Overall Function Check ...........................................399                 DTC Confirmation Procedure ..................................437
  Diagnostic Procedure ..............................................399                Wiring Diagram ........................................................438
DTC P0460 FUEL LEVEL SENSOR...........................412                               Diagnostic Procedure ..............................................439
  Component Description ...........................................412                DTC P1065 ECM POWER SUPPLY (BACK UP).......441
  On Board Diagnostic Logic......................................412                    Component Description ...........................................441




                                                                                 EC-4
                                                     CONTENTS                                   (Cont'd)
  On Board Diagnosis Logic.......................................441                    Component Description ...........................................479
  DTC Confirmation Procedure ..................................441                      CONSULT-II Reference Value in Data Monitor
  Wiring Diagram ........................................................442            Mode ........................................................................479     GI
  Diagnostic Procedure ..............................................443                On Board Diagnosis Logic.......................................479
DTC P1102 MAF SENSOR .........................................445                       DTC Confirmation Procedure ..................................480                     MA
  Component Description ...........................................445                  Overall Function Check ...........................................481
  CONSULT-II Reference Value in Data Monitor                                            Diagnostic Procedure ..............................................481
  Mode ........................................................................445   DTC P1146, P1166 HO2S2 .........................................486                     EM
  On Board Diagnosis Logic.......................................445                    Component Description ...........................................486
  DTC Confirmation Procedure ..................................445                      CONSULT-II Reference Value in Data Monitor
  Wiring Diagram ........................................................447            Mode ........................................................................486     LC
  Diagnostic Procedure ..............................................448                On Board Diagnosis Logic.......................................486
DTC P1121 ELECTRIC THROTTLE CONTROL                                                     DTC Confirmation Procedure ..................................487
ACTUATOR .................................................................451           Overall Function Check ...........................................487
  Component Description ...........................................451                  Wiring Diagram ........................................................489
  On Board Diagnosis Logic.......................................451                    Diagnostic Procedure ..............................................491               FE
  DTC Confirmation Procedure ..................................451                   DTC P1147, P1167 HO2S2 .........................................495
  Diagnostic Procedure ..............................................452                Component Description ...........................................495
DTC P1122 ELECTRIC THROTTLE CONTROL                                                     CONSULT-II Reference Value in Data Monitor                                           AT
FUNCTION ...................................................................453         Mode ........................................................................495
  Description ...............................................................453        On Board Diagnosis Logic.......................................495
  On Board Diagnosis Logic.......................................453                    DTC Confirmation Procedure ..................................496
                                                                                                                                                                             AX
  DTC Confirmation Procedure ..................................453                      Overall Function Check ...........................................496
  Wiring Diagram ........................................................455            Wiring Diagram ........................................................498           SU
  Diagnostic Procedure ..............................................456                Diagnostic Procedure ..............................................500
  Component Inspection.............................................460               DTC P1148, P1168 CLOSED LOOP CONTROL........504
DTC P1124, P1126 THROTTLE CONTROL                                                       On Board Diagnosis Logic.......................................504                   BR
MOTOR RELAY...........................................................461               DTC Confirmation Procedure ..................................504
  Component Description ...........................................461                  Overall Function Check ...........................................505
  CONSULT-II Reference Value in Data Monitor                                            Diagnostic Procedure ..............................................505               ST
  Mode ........................................................................461   DTC P1211 VDC/TCS/ABS CONTROL UNIT.............506
  On Board Diagnosis Logic.......................................461                    Description ...............................................................506
                                                                                                                                                                             RS
  DTC Confirmation Procedure ..................................461                      On Board Diagnosis Logic.......................................506
  Wiring Diagram ........................................................463            DTC Confirmation Procedure ..................................506
  Diagnostic Procedure ..............................................464                Diagnostic Procedure ..............................................507               BT
  Component Inspection.............................................466               DTC P1212 VDC/TCS/ABS COMMUNICATION
DTC P1128 THROTTLE CONTROL MOTOR.............467                                     LINE .............................................................................508
  Component Description ...........................................467                  Description ...............................................................508       HA
  On Board Diagnosis Logic.......................................467                    On Board Diagnosis Logic.......................................508
  DTC Confirmation Procedure ..................................467                      DTC Confirmation Procedure ..................................508
  Wiring Diagram ........................................................468            Diagnostic Procedure ..............................................509
                                                                                                                                                                             SC
  Diagnostic Procedure ..............................................469             DTC P1217 ENGINE OVER TEMPERATURE............510
  Component Inspection.............................................471                  System Description..................................................510              EL
DTC P1143, P1163 HO2S1 .........................................472                     CONSULT-II Reference Value in Data Monitor
  Component Description ...........................................472                  Mode ........................................................................510
  CONSULT-II Reference Value in Data Monitor                                            On Board Diagnosis Logic.......................................511                   IDX
  Mode ........................................................................472      Overall Function Check ...........................................512
  On Board Diagnosis Logic.......................................472                    Wiring Diagram ........................................................514
  DTC Confirmation Procedure ..................................473                      Diagnostic Procedure ..............................................516
  Overall Function Check ...........................................474                 Main 12 Causes of Overheating..............................527
  Diagnostic Procedure ..............................................474             DTC P1225 TP SENSOR ............................................528
DTC P1144, P1164 HO2S1 .........................................479                     Component Description ...........................................528




                                                                                EC-5
                                                     CONTENTS                                  (Cont'd)
  On Board Diagnosis Logic.......................................528                 DTC P1490 VACUUM CUT VALVE BYPASS
  DTC Confirmation Procedure ..................................528                   VALVE..........................................................................587
  Diagnostic Procedure ..............................................529               Description ...............................................................587
DTC P1226 TP SENSOR ............................................530                    CONSULT-II Reference Value in Data Monitor
  Component Description ...........................................530                 Mode ........................................................................587
  On Board Diagnosis Logic.......................................530                   On Board Diagnosis Logic.......................................587
  DTC Confirmation Procedure ..................................530                     DTC Confirmation Procedure ..................................588
  Diagnostic Procedure ..............................................531               Wiring Diagram ........................................................589
DTC P1229 SENSOR POWER SUPPLY....................532                                   Diagnostic Procedure ..............................................590
  On Board Diagnosis Logic.......................................532                 DTC P1491 VACUUM CUT VALVE BYPASS
  DTC Confirmation Procedure ..................................532                   VALVE..........................................................................593
  Wiring Diagram ........................................................534           Description ...............................................................593
  Diagnostic Procedure ..............................................535               CONSULT-II Reference Value in Data Monitor
DTC P1444 EVAP CANISTER PURGE VOLUME                                                   Mode ........................................................................593
CONTROL SOLENOID VALVE...................................538                           On Board Diagnosis Logic.......................................594
  Description ...............................................................538       DTC Confirmation Procedure ..................................594
  CONSULT-II Reference Value in Data Monitor                                           Overall Function Check ...........................................595
  Mode ........................................................................538     Wiring Diagram ........................................................596
  On Board Diagnosis Logic.......................................539                   Diagnostic Procedure ..............................................597
  DTC Confirmation Procedure ..................................539                   DTC P1564 ASCD STEERING SWITCH ....................605
  Wiring Diagram ........................................................541           Component Description ...........................................605
  Diagnostic Procedure ..............................................543               CONSULT-II Reference Value in Data Monitor
DTC P1446 EVAP CANISTER VENT CONTROL                                                   Mode ........................................................................605
VALVE..........................................................................551     On Board Diagnosis Procedure...............................605
  Component Description ...........................................551                 DTC Confirmation Procedure ..................................606
  CONSULT-II Reference Value in Data Monitor                                           Wiring Diagram ........................................................607
  Mode ........................................................................551     Diagnostic Procedure ..............................................609
  On Board Diagnosis Logic.......................................551                   Component Inspection.............................................611
  DTC Confirmation Procedure ..................................551                   DTC P1572 ASCD BRAKE SWITCH..........................612
  Wiring Diagram ........................................................553           Component Description ...........................................612
  Diagnostic Procedure ..............................................554               CONSULT-II Reference Value in Data Monitor
DTC P1448 EVAP CANISTER VENT CONTROL                                                   Mode ........................................................................612
VALVE..........................................................................559     On Board Diagnosis Procedure...............................612
  Component Description ...........................................559                 DTC Confirmation Procedure ..................................613
  CONSULT-II Reference Value in Data Monitor                                           Wiring Diagram ........................................................614
  Mode ........................................................................559     Diagnostic Procedure ..............................................616
  On Board Diagnosis Logic.......................................559                   Component Inspection.............................................621
  DTC Confirmation Procedure ..................................559                   DTC P1574 ASCD VEHICLE SPEED SENSOR.........622
  Overall Function Check ...........................................561                Component Description ...........................................622
  Wiring Diagram ........................................................562           On Board Diagnosis Procedure...............................622
  Diagnostic Procedure ..............................................563               DTC Confirmation Procedure ..................................622
DTC P1456 EVAP CONTROL SYSTEM.....................568                                  Wiring Diagram ........................................................624
  On Board Diagnosis Logic.......................................568                   Diagnostic Procedure ..............................................625
  DTC Confirmation Procedure ..................................569                   DTC P1706 PNP SWITCH...........................................627
  Overall Function Check ...........................................570                Component Description ...........................................627
  Diagnostic Procedure ..............................................571               CONSULT-II Reference Value in Data Monitor
DTC P1464 FUEL LEVEL SENSOR...........................584                              Mode ........................................................................627
  Component Description ...........................................584                 On Board Diagnosis Logic.......................................627
  On Board Diagnostic Logic......................................584                   DTC Confirmation Procedure ..................................627
  DTC Confirmation Procedure ..................................584                     Overall Function Check ...........................................628
  Wiring Diagram ........................................................585           Wiring Diagram ........................................................629
  Diagnostic Procedure ..............................................586               Diagnostic Procedure ..............................................630




                                                                                EC-6
                                                     CONTENTS                                  (Cont'd)
DTC P1800 VIAS CONTROL SOLENOID VALVE .....632                                          Component Inspection.............................................667
  Component Description ...........................................632               VARIABLE INDUCTION AIR CONTROL SYSTEM
  CONSULT-II Reference Value in Data Monitor                                         (VIAS)...........................................................................669   GI
  Mode ........................................................................632      Description ...............................................................669
  On Board Diagnosis Logic.......................................632                    Wiring Diagram ........................................................671          MA
  DTC Confirmation Procedure ..................................632                      Diagnostic Procedure ..............................................672
  Wiring Diagram ........................................................634         IGNITION SIGNAL.......................................................677
  Diagnostic Procedure ..............................................635                Component Description ...........................................677                EM
DTC P1805 BRAKE SWITCH .....................................637                         Wiring Diagram ........................................................678
  Description ...............................................................637        Diagnostic Procedure ..............................................681
  CONSULT-II Reference Value in Data Monitor                                         INJECTOR ...................................................................688        LC
  Mode ........................................................................637      Component Description ...........................................688
  On Board Diagnosis Logic.......................................637                    CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................637                      Mode ........................................................................688
  Wiring Diagram ........................................................638            Wiring Diagram ........................................................689
  Diagnostic Procedure ..............................................639                Diagnostic Procedure ..............................................690              FE
  Component Inspection.............................................642               START SIGNAL...........................................................694
DTC P2122, P2123 APP SENSOR .............................643                            CONSULT-II Reference Value in Data Monitor
  Component Description ...........................................643                  Mode ........................................................................694    AT
  CONSULT-II Reference Value in Data Monitor                                            Wiring Diagram ........................................................695
  Mode ........................................................................643      Diagnostic Procedure ..............................................696
  On Board Diagnosis Logic.......................................643                 FUEL PUMP.................................................................698
                                                                                                                                                                            AX
  DTC Confirmation Procedure ..................................644                      System Description..................................................698
  Wiring Diagram ........................................................645            Component Description ...........................................698                SU
  Diagnostic Procedure ..............................................646                CONSULT-II Reference Value in Data Monitor
  Component Inspection.............................................649                  Mode ........................................................................698
DTC P2127, P2128 APP SENSOR .............................650                            Wiring Diagram ........................................................699          BR
  Component Description ...........................................650                  Diagnostic Procedure ..............................................700
  CONSULT-II Reference Value in Data Monitor                                         ELECTRONIC CONTROLLED ENGINE MOUNT.......705
  Mode ........................................................................650      System Description..................................................705             ST
  On Board Diagnosis Logic.......................................650                    CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................651                      Mode ........................................................................705
                                                                                                                                                                            RS
  Wiring Diagram ........................................................652            Wiring Diagram ........................................................706
  Diagnostic Procedure ..............................................653                Diagnostic Procedure ..............................................707
  Component Inspection.............................................655               REFRIGERANT PRESSURE SENSOR ......................709                                  BT
DTC P2135 TP SENSOR ............................................656                     Description ...............................................................709
  Component Description ...........................................656                  Wiring Diagram ........................................................710
  CONSULT-II Reference Value in Data Monitor                                            Diagnostic Procedure ..............................................711              HA
  Mode ........................................................................656   ASCD BRAKE SWITCH ..............................................713
  On Board Diagnosis Logic.......................................656                    Component Description ...........................................713
  DTC Confirmation Procedure ..................................657                      CONSULT-II Reference Value in Data Monitor
                                                                                                                                                                            SC
  Wiring Diagram ........................................................658            Mode ........................................................................713
  Diagnostic Procedure ..............................................659                Wiring Diagram ........................................................714          EL
  Component Inspection.............................................661                  Diagnostic Procedure ..............................................716
DTC P2138 APP SENSOR..........................................662                    ASCD INDICATOR LAMP...........................................721
  Component Description ...........................................662                  Component Description ...........................................721                IDX
  CONSULT-II Reference Value in Data Monitor                                            CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................662      Mode ........................................................................721
  On Board Diagnosis Logic.......................................662                    Wiring Diagram ........................................................722
  DTC Confirmation Procedure ..................................663                      Diagnostic Procedure ..............................................723
  Wiring Diagram ........................................................664         ELECTRICAL LOAD SIGNAL.....................................724
  Diagnostic Procedure ..............................................665                Wiring Diagram ........................................................724




                                                                                EC-7
                                                 CONTENTS                              (Cont'd)
  Diagnostic Procedure ..............................................726         Fuel Pump ...............................................................730
DATA LINK CONNECTORS .......................................729                  Injector .....................................................................730
  Wiring Diagram ........................................................729     Calculated Load Value.............................................730
SERVICE DATA AND SPECIFICATIONS (SDS) .......730                                 Intake Air Temperature Sensor................................730
  Fuel Pressure Regulator..........................................730           Heated Oxygen Sensor 2 Heater ............................730
  Idle Speed and Ignition Timing................................730              Fuel Tank Temperature Sensor ...............................731
  Mass Air Flow Sensor..............................................730          Throttle Control Motor..............................................731
  Engine Coolant Temperature Sensor ......................730                    Crankshaft Position Sensor (POS)..........................731
  Heated Oxygen Sensor 1 Heater ............................730                  Camshaft Position Sensor (PHASE) .......................731




                                                                          EC-8
                                    TROUBLE DIAGNOSIS -- INDEX
                                                                                            Alphabetical Index

                                               Alphabetical Index                                         NHEC0001
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-159.                                                                                              GI
                                                                            X: Applicable    --: Not applicable

                                               DTC*1
  Items (CONSULT-II screen terms)                                Trip    MIL lighting up     Reference page          MA
                                     CONSULT-II
                                                       ECM*3
                                       GST*2

 A/T 1ST GR FNCTN                      P0731           0731         2          X                 AT-137              EM
 A/T 2ND GR FNCTN                      P0732           0732         2          X                 AT-143

 A/T 3RD GR FNCTN                      P0733           0733         2          X                 AT-149              LC
 A/T 4TH GR FNCTN                      P0734           0734         2          X                 AT-163

 A/T TCC S/V FNCTN                     P0744           0744         2          X                 AT-163

 ABSL PRES SEN/CIRC                    P0107           0107         2          X                 EC-197
                                                                                                                     FE
 ABSL PRES SEN/CIRC                    P0108           0108         2          X                 EC-197

 APP SEN 1/CIRC                        P2122           2122         1          X                 EC-643
                                                                                                                     AT
 APP SEN 1/CIRC                        P2123           2123         1          X                 EC-643

 APP SEN 2/CIRC                        P2127           2127         1          X                 EC-650
                                                                                                                     AX
 APP SEN 2/CIRC                        P2128           2128         1          X                 EC-650

 APP SENSOR                            P2138           2138         1          X                 EC-662
                                                                                                                     SU
 ASCD BRAKE SW                         P1572           1572         1          --                EC-612

 ASCD SW                               P1564           1564         1          --                EC-605              BR
 ASCD VHL SPD SEN                      P1574           1574         1          --                EC-622

 ATF TEMP SEN/CIRC                     P0710           0710         2          --                AT-115              ST
 BRAKE SW/CIRCUIT                      P1805           1805         2          --                EC-637

 CAN COMM CIRCUIT                      U1000           1000*5       1       X or --              EC-159              RS
 CAN COMM CIRCUIT                      U1001           1001*5       2          --                EC-159

 CKP SEN/CIRCUIT                       P0335           0335         2          X                 EC-310              BT
 CLOSED LOOP-B1                        P1148           1148         1          X                 EC-504

 CLOSED LOOP-B2                        P1168           1168         1          X                 EC-504              HA
 CMP SEN/CIRC-B1                       P0340           0340         2          X                 EC-317

 CMP SEN/CIRC-B2                       P0345           0345         2          X                 EC-317
                                                                                                                     SC
 CTP LEARNING                          P1225           1225         2          --                EC-528

 CTP LEARNING                          P1226           1226         2          --                EC-530
                                                                                                                     EL
 CYL 1 MISFIRE                         P0301           0301         2          X                 EC-296
                                                                                                                     IDX
 CYL 2 MISFIRE                         P0302           0302         2          X                 EC-296

 CYL 3 MISFIRE                         P0303           0303         2          X                 EC-296

 CYL 4 MISFIRE                         P0304           0304         2          X                 EC-296

 CYL 5 MIS



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