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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS


K ELECTRICAL

                                                                                                                                                                   A




   POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
                                                                                                   SECTION                    PG                                   B



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                                                                                                                                                                   E
                                                                   CONTENTS
POWER SUPPLY ROUTING CIRCUIT ..................... 3                      .        GROUND .................................................................. 29
                                                                                                                                                          .        F
  Schematic ............................................................... 3
                                                                          .         Ground Distribution ................................................ 29
                                                                                                                                                          .
  Wiring Diagram - POWER - .................................... 4         .           MAIN HARNESS ................................................ 29    .
    BATTERY POWER SUPPLY - IGNITION SW. IN                                            ENGINE ROOM HARNESS ............................... 34              .        G
    ANY POSITION .................................................... 4   .           ENGINE CONTROL HARNESS ......................... 37                 .
    ACCESSORY POWER SUPPLY - IGNITION SW.                                             BODY HARNESS ............................................... 38     .
    IN "ACC" OR "ON" ............................................... 9    .        HARNESS ................................................................ 41
                                                                                                                                                          .
                                                                                                                                                                   H
    IGNITION POWER SUPPLY - IGNITION SW. IN                                         Harness Layout ..................................................... 41
                                                                                                                                                          .
    "ON" AND/OR "START" ...................................... 10         .           HOW TO READ HARNESS LAYOUT ................ 41                      .
  Fuse ...................................................................... 15
                                                                          .           OUTLINE ............................................................ 42
                                                                                                                                                          .
  Fusible Link ........................................................... 15
                                                                          .           MAIN HARNESS ................................................ 43    .         I
  Circuit Breaker ...................................................... 15
                                                                          .           ENGINE ROOM HARNESS ............................... 46              .
IPDM E/R (INTELLIGENT POWER DISTRIBUTION                                              ENGINE CONTROL HARNESS (2WD) ............. 51                       .
MODULE ENGINE ROOM) ..................................... 16              .           ENGINE CONTROL HARNESS (AWD) ............. 53                       .        J
  System Description ............................................... 16   .           BODY HARNESS ............................................... 55     .
    SYSTEMS CONTROLLED BY IPDM E/R .......... 16                          .           BODY NO. 2 HARNESS .................................... 58          .
    CAN COMMUNICATION LINE CONTROL ........ 16                            .           ROOM LAMP HARNESS ................................... 59            .
                                                                                                                                                                   PG
    IPDM E/R STATUS CONTROL .......................... 17                 .           FRONT DOOR HARNESS ................................. 60             .
  CAN Communication System Description ............. 17                   .           REAR DOOR HARNESS ................................... 61            .
  CAN Communication Unit ..................................... 17         .         Wiring Diagram Codes (Cell Codes) ..................... 62            .
  Function of Detecting Ignition Relay Malfunction ... 17                          ELECTRICAL UNITS LOCATION ........................... 65               .        L
  CONSULT-II Function (IPDM E/R) ........................ 18              .         Electrical Units Location ........................................ 65 .
    CONSULT-II BASIC OPERATION ...................... 18                  .           ENGINE COMPARTMENT ................................. 65             .
    SELF-DIAG RESULTS ....................................... 19          .           PASSENGER COMPARTMENT ........................ 66                   .        M
    DATA MONITOR ................................................ 20      .           LUGGAGE COMPARTMENT ............................. 68                .
    ACTIVE TEST .................................................... 21   .        HARNESS CONNECTOR ........................................ 69          .
  Auto Active Test .................................................... 22.         Description ............................................................. 69
                                                                                                                                                          .
    DESCRIPTION ................................................... 22    .           HARNESS CONNECTOR (TAB-LOCKING
    OPERATION PROCEDURE .............................. 22                 .           TYPE) ................................................................. 69
                                                                                                                                                          .
    INSPECTION IN AUTO ACTIVE TEST MODE ... 22                                        HARNESS CONNECTOR (SLIDE-LOCKING
  Schematic ............................................................. 24
                                                                          .           TYPE) ................................................................. 70
                                                                                                                                                          .
  IPDM E/R Terminal Arrangement .......................... 25             .        ELECTRICAL UNITS ............................................... 71    .
  IPDM E/R Power/Ground Circuit Inspection ......... 26                   .         Terminal Arrangement ........................................... 71   .
  Inspection With CONSULT-II (Self-Diagnosis) ...... 27                   .        SMJ (SUPER MULTIPLE JUNCTION) .................... 72                  .
  Removal and Installation of IPDM E/R .................. 28              .         Terminal Arrangement ........................................... 72   .
    REMOVAL .......................................................... 28 .        STANDARDIZED RELAY ......................................... 74        .
    INSTALLATION .................................................. 28    .         Description ............................................................. 74
                                                                                                                                                          .
                                                                                      NORMAL OPEN, NORMAL CLOSED AND
                                                                                      MIXED TYPE RELAYS ....................................... 74        .
                                                                                      TYPE OF STANDARDIZED RELAYS ................ 74                     .


Edition; 2004 September                                                      PG-1                                                       2005 G35 Sedan
FUSE BLOCK - JUNCTION BOX (J/B) ................... 76        .        FUSE, FUSIBLE LINK AND RELAY BOX ...............77             .
 Terminal Arrangement ........................................... 76
                                                              .         Terminal Arrangement ............................................77
                                                                                                                                      .




Edition; 2004 September                                           PG-2                                                2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT

POWER SUPPLY ROUTING CIRCUIT                                   PFP:24110
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Schematic                                                          AKS000CM




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                                                              TKWM2137E




Edition; 2004 September               PG-3               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT

Wiring Diagram - POWER -                                            AKS000CN

BATTERY POWER SUPPLY - IGNITION SW. IN ANY POSITION




                                                              TKWM2138E




Edition; 2004 September               PG-4               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT


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Edition; 2004 September               PG-5               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT




                                                              TKWM2140E




Edition; 2004 September               PG-6               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT


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                                                              TKWT1570E




Edition; 2004 September               PG-7               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT




                                                              TKWM2141E




Edition; 2004 September               PG-8               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT

ACCESSORY POWER SUPPLY - IGNITION SW. IN "ACC" OR "ON"
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Edition; 2004 September               PG-9               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT

IGNITION POWER SUPPLY - IGNITION SW. IN "ON" AND/OR "START"




                                                                   TKWM2143E




Edition; 2004 September              PG-10                    2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT


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Edition; 2004 September              PG-11               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT




                                                              TKWT1575E




Edition; 2004 September              PG-12               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT


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Edition; 2004 September              PG-13               2005 G35 Sedan
                          POWER SUPPLY ROUTING CIRCUIT




                                                              TKWM2146E




Edition; 2004 September              PG-14               2005 G35 Sedan
                               POWER SUPPLY ROUTING CIRCUIT

Fuse                                                                                    AKS000I8

                                                                                                   A
q   If fuse is blown, be sure to eliminate cause of malfunction before
    installing new fuse.
q   Use fuse of specified rating. Never use fuse of more than speci-
    fied rating.                                                                                   B
q   Do not partially install fuse; always insert it into fuse holder prop-
    erly.
                                                                                                   C
q   Remove fuse for "ELECTRICAL PARTS (BAT)" if vehicle is not
    used for a long period of time.

                                                                                                   D
                                                                                    CEL083


Fusible Link                                                                            AKS000I9

                                                                                                   E
A melted fusible link can be detected either by visual inspection or by
feeling with finger tip. If its condition is questionable, use circuit
tester or test lamp.
CAUTION:                                                                                           F
q    If fusible link should melt, it is possible that critical circuit
     (power supply or large current carrying circuit) is shorted.
     In such a case, carefully check and eliminate cause of mal-                                   G
     function.
q    Never wrap outside of fusible link with vinyl tape. Important:
     Never let fusible link touch any other wiring harness, vinyl                                  H
     or rubber parts.                                                               CKIT0163E



Circuit Breaker                                                                        AKS000IA


The PTC thermistor generates heat in response to current flow. The                                  I
temperature (and resistance) of the thermistor element varies with
current flow. Excessive current flow will cause the element's temper-
ature to rise. When the temperature reaches a specified level, the                                 J
electrical resistance will rise sharply to control the circuit current.
Reduced current flow will cause the element to cool. Resistance falls
accordingly and normal circuit current flow is allowed to resume.
                                                                                                   PG


                                                                                                   L
                                                                                    SEL109W




                                                                                                   M




Edition; 2004 September                               PG-15                  2005 G35 Sedan
     IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
                                                                                                                                PFP:284B7

System Description                                                                                                                       AKS000I0


q  IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
   which were originally placed in engine compartment. It controls integrated relay via IPDM E/R control cir-
   cuit.
q  IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
   pressure switch signal, and hood switch signal reception, etc.
q  It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1.   Lamp control
     Using CAN communication line, it receives signal from BCM and controls the following lamps:
     q Head lamps (Hi, Lo)

     q Parking lamps

     q Tail lamps

     q Front fog lamps

2.   Wiper control
     Using CAN communication line, it receives signals from BCM and controls the front wipers.
3.   Rear window defogger relay control
     Using CAN communication line, it receives signals from BCM and controls the rear window defogger
     relay.
4.   A/C compressor control
     Using CAN communication line, it receives signals from ECM and controls the A/C relay.
5.   Cooling fan control
     Using CAN communication line, it receives signals from ECM and controls cooling fan relay.
6.   Horn control
     Using CAN communication line, it receives signals from BCM and controls horn relay.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L-line, CAN
H-line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control
     q When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
       After CAN communication recovers normally, it also returns to normal control.
     q Operation of control parts by IPDM E/R during fail-safe mode is as follows:

 Controlled system                                                         Fail-safe mode
                          q   With the ignition switch ON, the headlamp (low) is ON.
 Headlamp
                          q   With the ignition switch OFF, the headlamp (low) is OFF.
                          q   With the ignition switch ON, the tail and parking lamps is ON.
 Tail and parking lamps
                          q   With the ignition switch OFF, the tail and parking lamps is OFF.
                          q   With the ignition switch ON, the cooling fan HI operates.
 Cooling fan
                          q   With the ignition switch OFF, the cooling fan stops.
                          Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it was in just
 Front wiper
                          before fail-safe control was initiated.
 Rear window defogger     Rear window defogger relay OFF
 A/C compressor           A/C compressor OFF
 Front fog lamps          Front fog lamp relay OFF




Edition; 2004 September                                         PG-16                                                  2005 G35 Sedan
    IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition.                          A
1. CAN communication status
     q CAN communication is normally performed with other control units.
                                                                                                                       B
     q Individual unit control by IPDM E/R is normally performed.

     q When sleep request signal is received from BCM, mode is switched to sleep waiting status.

2. Sleep waiting status                                                                                                C
     q Process to stop CAN communication is activated.

     q All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
       cation with other control units is stopped, mode switches to sleep status.                                      D
3. Sleep status
     q IPDM E/R operates in low power mode.

     q CAN communication is stopped.                                                                                   E
     q When a change in CAN communication line is detected, mode switches to CAN communication status.

     q When a change hood switch or ignition switch signal is detected, mode switches to CAN communica-
       tion status.                                                                                                    F

CAN Communication System Description                                                                        AKS00A1L


CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-       G
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicles are equipped with many electronic control units and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission            H
with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Unit                                                                                      AKS0092W
                                                                                                                       I
Refer to LAN-21, "CAN Communication Unit" .
Function of Detecting Ignition Relay Malfunction                                                            AKS009HN
                                                                                                                     J
q   When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON tail
    and parking lamps for 10 minutes to indicate ignition relay malfunction.
q   When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a PG
    CAN communication from BCM, IPDM E/R lets tail lamp relay operate.
          Ignition switch signal                Ignition relay status                   Tail lamp relay
                   ON                                   ON                                    --                       L
                  OFF                                   OFF                                   --
                   ON                                   OFF                                   --
                                                                                                                       M
                  OFF                                   ON                             ON (10 minutes)
NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.




Edition; 2004 September                             PG-17                                          2005 G35 Sedan
     IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

CONSULT-II Function (IPDM E/R)                                                                                            AKS009HO


CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
     Inspection Item, Diagnosis Mode                                           Description
 SELF-DIAG RESULTS                     The IPDM E/R performs diagnosis of the CAN communication and self-diagnosis.
 DATA MONITOR                          The input/output data of the IPDM E/R is displayed in real time.
 CAN DIAG SUPPORT MNTR                 The result of transmit/receive diagnosis of CAN communication can be read.
 ACTIVE TEST                           The IPDM E/R sends a drive signal to electronic components to check their operation.


CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
    SULT-II CONVERTER to the data link connector, then turn the
    ignition switch ON.




                                                                                                                       PIIA1095E



2.   Touch "START (NISSAN BASED VHCL)".




                                                                                                                       BCIA0029E



3.   Touch "IPDM E/R" on "SELECT SYSTEM" screen.
     q If "IPDM E/R" is not indicated, refer to GI-38, "CONSULT-II
       Data Link Connector (DLC) Circuit" .




                                                                                                                       BCIA0030E




Edition; 2004 September                                  PG-18                                              2005 G35 Sedan
      IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

4.    Select the desired part to be diagnosed on the "SELECT DIAG
      MODE" screen.                                                                                                                         A


                                                                                                                                            B



                                                                                                                                            C

                                                                                                                                BCIA0031E

                                                                                                                                            D
SELF-DIAG RESULTS
Operation Procedure
1.    Touch "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.                                                                               E
2.    Check display content in self-diagnostic results.
Display Item List
                                                                                                      TIME                                  F
                           CONSULT-II
       Display Items                                 Malfunction detecting condition                                 Possible causes
                           display code                                                          CRNT    PAST
 NO DTC IS
                                                                                                                                            G
 DETECTED.FURTHER
                                 -                                  -                             -          -              -
 TESTING MAY BE
 REQUIRED.
                                          q   If CAN communication reception/transmission                                                   H
                                                                                                                 Any of or several items
                                              data has a malfunction, or if any of the control                   below have errors.
                                              units malfunction, data reception/transmission
 CAN COMM CIRC                U1000           cannot be confirmed.                                



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