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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS


K ELECTRICAL

                                                                                                                                                                   A




   POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
                                                                                                   SECTION                    PG                                   B



                                                                                                                                                                   C


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                                                                                                                                                                   E
                                                                   CONTENTS
POWER SUPPLY ROUTING CIRCUIT ..................... 3                      .        GROUND .................................................................. 31
                                                                                                                                                          .        F
  Schematic ............................................................... 3
                                                                          .         Ground Distribution ................................................ 31
                                                                                                                                                          .
  Wiring Diagram - POWER - .................................... 4         .           MAIN HARNESS ................................................ 31    .
    BATTERY POWER SUPPLY - IGNITION SW. IN                                            ENGINE ROOM HARNESS ............................... 34              .        G
    ANY POSITION .................................................... 4   .           ENGINE HARNESS/VK ENGINE MODELS ....... 37                          .
    ACCESSORY POWER SUPPLY - IGNITION SW.                                             ENGINE HARNESS/VQ ENGINE MODELS ...... 38                           .
    IN "ACC" OR "ON" ............................................. 10     .           ENGINE CONTROL HARNESS/VK ENGINE
                                                                                                                                                                   H
    IGNITION POWER SUPPLY - IGNITION SW. IN                                           MODELS ............................................................ 39
                                                                                                                                                          .
    "ON" AND/OR "START" ...................................... 12         .           ENGINE CONTROL HARNESS/VQ ENGINE
  Fuse ...................................................................... 17
                                                                          .           MODELS ............................................................ 40
                                                                                                                                                          .
  Fusible Link ........................................................... 17
                                                                          .           BODY HARNESS ............................................... 41     .         I
  Circuit Breaker ...................................................... 17
                                                                          .           BODY NO.2 HARNESS ..................................... 44          .
IPDM E/R (INTELLIGENT POWER DISTRIBUTION                                              ROOM LAMP HARNESS ................................... 45            .
MODULE ENGINE ROOM) ..................................... 18              .        HARNESS ................................................................ 46
                                                                                                                                                          .        J
  System Description ............................................... 18   .         Harness Layout ..................................................... 46
                                                                                                                                                          .
    SYSTEMS CONTROLLED BY IPDM E/R .......... 18                          .           HOW TO READ HARNESS LAYOUT ................ 46                      .
    CAN COMMUNICATION LINE CONTROL ........ 18                            .           OUTLINE ............................................................ 47
                                                                                                                                                          .
                                                                                                                                                                   PG
    IPDM E/R STATUS CONTROL .......................... 19                 .           MAIN HARNESS ................................................ 48    .
  CAN Communication System Description ............. 19                   .           ENGINE ROOM HARNESS ............................... 51              .
  CAN Communication Unit ..................................... 19         .           ENGINE HARNESS/VK ENGINE MODELS ....... 54                          .
  Function of Detecting Ignition Relay Malfunction ... 19                             ENGINE HARNESS/VQ ENGINE MODELS ...... 55                           .        L
  CONSULT-II .......................................................... 20.           ENGINE CONTROL HARNESS/VK ENGINE
    CONSULT-II INSPECTION PROCEDURE ........ 20                           .           MODELS ............................................................ 56
                                                                                                                                                          .
    SELF-DIAG RESULTS ....................................... 21          .           ENGINE CONTROL HARNESS/VQ ENGINE                                             M
    DATA MONITOR ................................................ 22      .           MODELS ............................................................ 58
                                                                                                                                                          .
    ACTIVE TEST .................................................... 22   .           BODY HARNESS ............................................... 60     .
  Auto Active Test .................................................... 24.           BODY NO.2 HARNESS ..................................... 62          .
    DESCRIPTION ................................................... 24    .           ROOM LAMP HARNESS ................................... 63            .
    OPERATION PROCEDURE .............................. 24                 .           FRONT DOOR HARNESS ................................. 64             .
    INSPECTION IN AUTO ACTIVE TEST MODE ... 24                                        REAR DOOR HARNESS ................................... 65            .
  Schematic ............................................................. 26
                                                                          .           BACK DOOR HARNESS ................................... 66            .
  IPDM E/R Terminal Arrangement .......................... 27             .         Wiring Diagram Codes (Cell Codes) ..................... 67            .
  IPDM E/R Power/Ground Circuit Inspection ......... 28                   .        ELECTRICAL UNITS LOCATION ........................... 70               .
  Inspection With CONSULT-II (Self-Diagnosis) ...... 29                   .         Electrical Units Location ........................................ 70 .
  Removal and Installation of IPDM E/R .................. 30              .           ENGINE COMPARTMENT ................................. 70             .
    REMOVAL .......................................................... 30 .           PASSENGER COMPARTMENT ........................ 71                   .
    INSTALLATION .................................................. 30    .           LUGGAGE COMPARTMENT ............................. 73                .
                                                                                   HARNESS CONNECTOR ........................................ 74          .
                                                                                    Description ............................................................. 74
                                                                                                                                                          .
                                                                                      HERNESS CONNECTOR (TAB-LOCKING


Revision: 2004 November                                                      PG-1                                                       2004 FX35/FX45
   TYPE) ................................................................. 74
                                                                       .        STANDARDIZED RELAY .........................................81         .
   HARNESS CONNECTOR (SLIDE-LOCKING                                              Description .............................................................81
                                                                                                                                                       .
   TYPE) ................................................................. 75
                                                                       .           NORMAL OPEN, NORMAL CLOSED AND
JOINT CONNECTOR (J/C) ...................................... 76        .           MIXED TYPE RELAYS .......................................81         .
 Terminal Arrangement ........................................... 76   .           TYPE OF STANDARDIZED RELAYS .................81                     .
ELECTRICAL UNITS ............................................... 77    .        FUSE BLOCK - JUNCTION BOX (J/B) ...................83                  .
 Terminal Arrangement ........................................... 77   .         Terminal Arrangement ............................................83   .
SMJ (SUPER MULTIPLE JUNCTION) .................... 79                  .        FUSE, FUSIBLE LINK AND RELAY BOX ...............84                     .
 Terminal Arrangement ........................................... 79   .         Terminal Arrangement ............................................84   .




Revision: 2004 November                                                    PG-2                                                      2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT

POWER SUPPLY ROUTING CIRCUIT                                   PFP:24110
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Schematic                                                           AKS007VU




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                                                              TKWM1305E




Revision: 2004 November               PG-3               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT

Wiring Diagram - POWER -                                            AKS007VV

BATTERY POWER SUPPLY - IGNITION SW. IN ANY POSITION




                                                              TKWM0708E




Revision: 2004 November               PG-4               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT


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Revision: 2004 November               PG-5               2004 FX35/FX45
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Revision: 2004 November               PG-6               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT


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Revision: 2004 November               PG-7               2004 FX35/FX45
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Revision: 2004 November               PG-8               2004 FX35/FX45
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Revision: 2004 November               PG-9               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT

ACCESSORY POWER SUPPLY - IGNITION SW. IN "ACC" OR "ON"




                                                              TKWM0714E




Revision: 2004 November              PG-10               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT


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Revision: 2004 November              PG-11               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT

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




                                                                   TKWM1308E




Revision: 2004 November              PG-12                    2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT


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Revision: 2004 November              PG-13               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT




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Revision: 2004 November              PG-14               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT


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                                                              TKWM0719E




Revision: 2004 November              PG-15               2004 FX35/FX45
                          POWER SUPPLY ROUTING CIRCUIT




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Revision: 2004 November              PG-16               2004 FX35/FX45
                               POWER SUPPLY ROUTING CIRCUIT

Fuse                                                                                  AKS007VW

                                                                                                  A
q   If fuse is blown, be sure to eliminate cause of incident 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                                                                           AKS007VX

                                                                                                  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 inci-                                 G
     dent.
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.                                                               CKIM0195E



Circuit Breaker                                                                        AKS007VY


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




Revision: 2004 November                               PG-17                  2004 FX35/FX45
      IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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

System Description                                                                                                           AKS005S9


q  IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
   which were originally placed in engine room. It controls integrated relay via IPDM E/R control circuit.
q  IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
   pressure switch signal, 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 Headlamps (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.
    Tail and parking lamps         q   With the ignition switch ON, the tail and parking lamps is ON.
                                   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
    Front wiper
                                   was in just 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




Revision: 2004 November                                PG-18                                                  2004 FX35/FX45
    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 1 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 current-consumption 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                                                                        AKS005SA


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                                                                                      AKS00AOF
                                                                                                                       I
Refer to LAN-6, "CAN Communication Unit" .
Function of Detecting Ignition Relay Malfunction                                                            AKS005SB
                                                                                                                     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 IPDM E/R 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 lamp is OFF.




Revision: 2004 November                             PG-19                                          2004 FX35/FX45
     IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

CONSULT-II                                                                                                                AKS005SC


CONSULT-II performs the following functions with combination of data receiving, command and transmission
using the CAN communication line from the IPDM E/R.
     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 INSPECTION PROCEDURE
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.




                                                                                                                       PBIB1503E



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




                                                                                                                       SKIA3098E



3.   Touch "IPDM E/R" on "SELECT SYSTEM" screen.
     q If "IPDM E/R" is not displayed, print "SELECT SYSTEM"
       screen, then refer to GI-40, "CONSULT-II Data Link Connec-
       tor (DLC) Circuit" .




                                                                                                                       SKIA5036E




Revision: 2004 November                                  PG-20                                              2004 FX35/FX45
     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

                                                                                                                        PKIA6016E

                                                                                                                                    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/transmis-                                                   H
                                                                                                         Any of or several items
                                         sion data has a malfunction, or if any of the                   below have errors.
                                         control units malfunction, data reception/
 CAN COMM CIRC            U1000          transmission cannot be confirmed.                



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