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ELECTRICAL & POWER CONTROL

                                                                                                                                                                   A




                                                                                  SECTION
                                                                        POWER CONTROL SYSTEM
                                                                                                              PCS                                                  B



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                                                                                                                                                                   E
                                                                 CONTENTS
                              IPDM E/R                                             Description ..............................................................18
                                                                                                                                                         .         F
                                                                                   DTC Logic ...............................................................18
                                                                                                                                                         .
FUNCTION DIAGNOSIS .............................. 4
                                             .                                     Diagnosis Procedure ..............................................18  .
                                                                                                                                                                   G
RELAY CONTROL SYSTEM ............................. 4
                                             .                                   POWER SUPPLY AND GROUND CIRCUIT .... 19
  System Diagram ....................................................... 4
                                                                  .                Diagnosis Procedure ..............................................19
                                                                                                                                                 .
  System Description .................................................. 4
                                                                  .
  Component Parts Location ....................................... 5
                                                                  .              ECU DIAGNOSIS ........................................ 20
                                                                                                                                    .                              H

POWER CONTROL SYSTEM ............................ 7
                                            .                                    IPDM E/R (INTELLIGENT POWER DISTRI-
  System Diagram ....................................................... 7
                                                                  .              BUTION MODULE ENGINE ROOM) ................ 20                                    I
  System Description .................................................. 7
                                                                  .                Reference Value .....................................................20.
  Component Parts Location ....................................... 7
                                                                  .                Wiring Diagram - IPDM E/R - .................................27        .
                                                                                   Fail Safe .................................................................30
                                                                                                                                                          .
SIGNAL BUFFER SYSTEM ............................... 8
                                               .                                   DTC Index ..............................................................32
                                                                                                                                                          .        J
  System Diagram ....................................................... 8
                                                                  .
  System Description .................................................. 8
                                                                  .              PRECAUTION ............................................. 33
                                                                                                                                      .
  Component Parts Location ....................................... 8
                                                                  .                                                                                                K
                                                                                 PRECAUTIONS ................................................. 33
POWER CONSUMPTION CONTROL SYS-                                                     Precaution for Procedure without Cowl Top Cover 33         ....
TEM .................................................................... 9
                                                                   .               Precaution for Battery Service ................................33
                                                                                                                                              .
  System Diagram ....................................................... 9
                                                                  .                                                                                                L
  System Description .................................................. 9
                                                                  .              ON-VEHICLE REPAIR ................................ 34
                                                                                                                                .
  Component Parts Location ..................................... 10
                                                                  .
                                                                                 IPDM E/R (INTELLIGENT POWER DISTRI-
                                                                                                                                PCS
DIAGNOSIS SYSTEM (IPDM E/R) ....................11
                                            .                                    BUTION MODULE ENGINE ROOM) ................ 34
  Diagnosis Description ............................................ 11
                                                                .                  Exploded View ........................................................34
                                                                                                                                                     .
  CONSULT-III Function (IPDM E/R) ........................ 13   .                  Removal and Installation ........................................34
                                                                                                                                                     .
                                                                                                                                                                   N
                                                                                         POWER DISTRIBUTION SYSTEM
COMPONENT DIAGNOSIS ........................ 16
                                         .
                                                                                 BASIC INSPECTION .................................. 36
                                                                                                                                 .
U1000 CAN COMM CIRCUIT ............................16
                                               .                                                                                                                   O
  Description ............................................................. 16
                                                                       .         DIAGNOSIS AND REPAIR WORKFLOW ........ 36
  DTC Logic .............................................................. 16
                                                                       .           Work Flow ...............................................................36
                                                                                                                                                        .
  Diagnosis Procedure .............................................. 16.
                                                                                 FUNCTION DIAGNOSIS ............................. 39
                                                                                                                              .                                    P
B2098 IGNITION RELAY ON STUCK ..............17
                                        .
  Description ............................................................. 17
                                                                       .         POWER DISTRIBUTION SYSTEM ................... 39
  DTC Logic .............................................................. 17
                                                                       .           System Description .................................................39
                                                                                                                                                   .
  Diagnosis Procedure .............................................. 17.           Component Parts Location .....................................41.
                                                                                   Component Description .........................................42
                                                                                                                                                   .
B2099 IGNITION RELAY OFF STUCK .............18
                                        .
                                                                                 DIAGNOSIS SYSTEM (BCM) ........................... 43

Revision: 2007 June                                                       PCS-1                                                                 G37 Coupe
COMMON ITEM ....................................................... 43
                                                                .                POWER SUPPLY AND GROUND CIRCUIT .... 69
                                                                                                                  .
 COMMON ITEM : CONSULT-III Function (BCM -
 COMMON ITEM) ................................................... 43
                                                                .                BCM .......................................................................... 69
                                                                                                                                                            .
                                                                                  BCM : Diagnosis Procedure ................................... 69          .
INTELLIGENT KEY .................................................. 44
                                                               .
  INTELLIGENT KEY : CONSULT-III Function                                         IPDM E/R (INTELLIGENT POWER DISTRIBU-
  (BCM - INTELLIGENT KEY) .................................. 44.                 TION MODULE ENGINE ROOM) ............................. 69                 .
                                                                                   IPDM E/R (INTELLIGENT POWER DISTRIBU-
COMPONENT DIAGNOSIS ....................... 48
                                        .                                          TION MODULE ENGINE ROOM) : Diagnosis Pro-
                                                                                   cedure .................................................................... 69
                                                                                                                                                           .
U1000 CAN COMM CIRCUIT ........................... 48
                                               .
  Description ............................................................. 48
                                                                        .        PUSH-BUTTON IGNITION SWITCH ................ 71
                                                                                                                          .
  DTC Logic .............................................................. 48
                                                                        .          Description ............................................................. 71
                                                                                                                                                         .
  Diagnosis Procedure ............................................. 48  .          Component Function Check ................................. 71         .
                                                                                   Diagnosis Procedure .............................................. 71 .
U1010 CONTROL UNIT (CAN) ........................ 49
                                              .                                    Component Inspection ........................................... 72   .
  DTC Logic .............................................................. 49
                                                                       .
  Diagnosis Procedure ............................................. 49 .         PUSH-BUTTON IGNITION SWITCH POSI-
  Special Repair Requirement .................................. 49     .         TION INDICATOR ............................................. 73
                                                                                                                                          .
                                                                                   Description ............................................................. 73
                                                                                                                                                         .
B2553 IGNITION RELAY .................................. 50
                                                    .                              Component Function Check ................................. 73         .
  Description ............................................................. 50
                                                                        .          Diagnosis Procedure .............................................. 73 .
  DTC Logic .............................................................. 50
                                                                        .          Component Inspection ........................................... 74   .
  Diagnosis Procedure ............................................. 50  .
                                                                                 ECU DIAGNOSIS ....................................... 75
B260A IGNITION RELAY ................................. 52
                                                   .
  Description ............................................................. 52
                                                                        .        BCM (BODY CONTROL MODULE) ................. 75
                                                                                                                         .
  DTC Logic .............................................................. 52
                                                                        .          Reference Value .................................................... 75.
  Diagnosis Procedure ............................................. 52  .          Wiring Diagram - PDS (POWER DISTRIBUTION
                                                                                   SYSTEM) - ............................................................. 98
                                                                                                                                                          .
B2611 ACC RELAY .......................................... 54
                                                       .                           Fail Safe .............................................................. 103
                                                                                                                                                          .
  Description ............................................................. 54
                                                                        .          DTC Inspection Priority Chart ............................ 105         .
  DTC Logic .............................................................. 54
                                                                        .          DTC Index ........................................................... 107
                                                                                                                                                          .
  Diagnosis Procedure ............................................. 55  .
                                                                                 IPDM E/R (INTELLIGENT POWER DISTRI-
B2614 ACC RELAY CIRCUIT .......................... 57
                                               .                                 BUTION MODULE ENGINE ROOM) ............... 109
                                                                                                                         .
  Description ............................................................. 57
                                                                        .          Reference Value .................................................. 109 .
  DTC Logic .............................................................. 57
                                                                        .          Wiring Diagram - PDS (POWER DISTRIBUTION
  Diagnosis Procedure ............................................. 57  .          SYSTEM) - ........................................................... 116
                                                                                                                                                          .
  Component Inspection (Accessory Relay) ............ 58                .          Fail Safe .............................................................. 121
                                                                                                                                                          .
B2615 BLOWER RELAY CIRCUIT .................. 60
                                          .                                        DTC Index ........................................................... 123
                                                                                                                                                          .
  Description ............................................................. 60
                                                                        .
                                                                                 PRECAUTION ........................................... 124
  DTC Logic .............................................................. 60
                                                                        .
  Diagnosis Procedure ............................................. 60  .        PRECAUTIONS ............................................... 124
                                                                                                                                          .
  Component Inspection (Blower Relay) .................. 61             .          Precaution for Supplemental Restraint System
                                                                                   (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
B2616 IGNITION RELAY CIRCUIT .................. 63
                                            .
                                                                                   SIONER" .............................................................. 124
                                                                                                                                                        .
  Description ............................................................. 63
                                                                        .
                                                                                   Precaution Necessary for Steering Wheel Rota-
  DTC Logic .............................................................. 63
                                                                        .
                                                                                   tion after Battery Disconnect ................................ 124   .
  Diagnosis Procedure ............................................. 63  .
  Component Inspection (Ignition Relay) ................. 64            .        SYMPTOM DIAGNOSIS ........................... 125
B2618 BCM ....................................................... 66
                                                              .                  POWER DISTRIBUTION SYSTEM ................. 125
                                                                                                                          .
  Description ............................................................. 66
                                                                        .          Symptom Table .................................................... 125
                                                                                                                                                    .
  DTC Logic .............................................................. 66
                                                                        .
  Diagnosis Procedure ............................................. 66  .        PUSH-BUTTON IGNITION SWITCH DOES
                                                                                 NOT OPERATE ............................................... 127
                                                                                                                                          .
B261A PUSH-BUTTON IGNITION SWITCH .... 67
                                   .                                               Description ........................................................... 127
                                                                                                                                                         .
  Description ............................................................. 67
                                                                        .
                                                                                   Diagnosis Procedure ............................................ 127  .
  DTC Logic .............................................................. 67
                                                                        .
  Diagnosis Procedure ............................................. 67  .

Revision: 2007 June                                                       PCS-2                                                                    G37 Coupe
PUSH-BUTTON IGNITION SWITCH POSI-                                               BCM (BODY CONTROL MODULE) ............... 129
TION INDICATOR ........................................... 128
                                                        .                        Exploded View ...................................................... 129
                                                                                                                                                   .        A
  Description ........................................................... 128
                                                                       .         Removal and Installation ...................................... 129
                                                                                                                                                   .
  Diagnosis Procedure ............................................ 128 .
                                                                                PUSH BUTTON IGNITION SWITCH ............... 130
                                                                                                                                                            B
ON-VEHICLE REPAIR .............................. 129
                                               .                                 Exploded View ...................................................... 130
                                                                                                                                                   .
                                                                                 Removal and Installation ...................................... 130
                                                                                                                                                   .

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Revision: 2007 June                                                      PCS-3                                                            G37 Coupe
                                    RELAY CONTROL SYSTEM
< FUNCTION DIAGNOSIS >                                                                            [IPDM E/R]

FUNCTION DIAGNOSIS
RELAY CONTROL SYSTEM
System Diagram                                                                                   INFOID:0000000001605854




                                                                                               JPMIA0614GB




System Description                                                                               INFOID:0000000001605855



IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION:
IPDM E/R integrated relays cannot be removed.


Revision: 2007 June                                PCS-4                                              G37 Coupe
                                               RELAY CONTROL SYSTEM
< FUNCTION DIAGNOSIS >                                                                                                       [IPDM E/R]

                                                                                                                                 Reference            A
         Control relay                     Input/output                   Transmit unit                  Control part
                                                                                                                                   page
  



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