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Home › Nissan-Datsun › 2002 › Sentra SE-R, Automatic › Repair and Diagnosis › External Pages › Different car › Section 2012 (Glass, Window & Mirrors) › Rear Window Defogger › Rear Window Defogger Circuit Check

Rear Window Defogger Circuit Check

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSES 

    Check if any of the following fuses in IPDM E/R are blown.

    FUSE REFERENCE

    COMPONENT PARTS AMPERE FUSE NO.
    IPDM E/R 15A 46
    IPDM E/R 15A 47

    OK or NG 

    OK: GO TO 2.

    NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

  2. CHECK REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect rear window defogger.
    3. Turn ignition switch ON.
    4. Check voltage between rear window defogger connector D651 terminal + and ground.
      VOLTAGE SPECIFICATION CHART

      Connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      D651 + Ground Rear window defogger switch ON. Battery voltage
      Rear window defogger switch OFF. 0
      Fig 1: Checking Voltage Between Rear Window Defogger Connector D651 Terminal + And Ground
      G04913037

    OK or NG 

    OK: GO TO 3.

    NG: GO TO  4.

  3. CHECK REAR WINDOW DEFOGGER GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between rear window defogger connector D604 terminal - and ground.

      - - Ground : Continuity should exist. 

      Fig 2: Checking Continuity Between Rear Window Defogger Connector D604 Terminal - And Ground
      G04902836

    OK or NG 

    OK: Check filament. Refer to "FILAMENT CHECK ".

    • If filament is OK.

      Check the condition of the harness and the connector.

    • If filament is NG.

      Repair filament.

    NG: Repair or replace harness.

  4. CHECK REAR WINDOW DEFOGGER RELAY OUTPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Check voltage between IPDM E/R connector E124 terminal 60 and ground.
      VOLTAGE SPECIFICATION CHART

      Connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      E124 60 Ground Rear window defogger switch ON. Battery voltage
      Rear window defogger switch OFF. 0
      Fig 3: Checking Voltage Between IPDM E/R Connector E124 Terminal 60 And Ground
      G04902834

    OK or NG 

    OK: Repair or replace harness.

    NG: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

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