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Home › Nissan-Datsun › 2004 › Sentra SE-R › Repair and Diagnosis › External Pages › Different car › Section 556 (Rear Window Defogger - Sedan) › Rear Window Defogger › Rear Window Defogger Circuit Check

Rear Window Defogger Circuit Check

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT 1 
    1. Turn ignition switch OFF.
    2. Disconnect rear window defogger connector.
    3. Turn ignition switch ON.
    4. Check voltage between rear window defogger connector and ground.
      Fig 1: Voltage Check Between Rear Window Defogger Connector And Ground Table
      G02354943Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 2: Checking Voltage Between Rear Window Defogger Connector And Ground
      G02354944Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 2.
    2. NG: GO TO  3.
  2. CHECK REAR WINDOW DEFOGGER GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between rear window defogger connector B241 terminal 1 and ground.

      1(B) - Ground: Continuity should exist 

    OK or NG 

    1. 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.

    2. NG: Repair or replace harness.
      Fig 3: Checking Continuity Between Rear Window Defogger Connector B241 Terminal 1 And Ground
      G02354945Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK REAR WINDOW DEFOGGER POWER WINDOW SUPPLY CIRCUIT 2 
    1. Turn ignition switch OFF.
    2. Disconnect condenser connector.
    3. Turn ignition switch ON.
    4. Check voltage between condenser connector and ground.
      Fig 4: Voltage Check Between Condenser Connector And Ground Table
      G02354946Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 5: Checking Voltage Between Condenser Connector And Ground
      G02354947Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: Repair or replace harness.
    2. NG: GO TO 4.
  4. CHECK CONDENSER HARNESS 
    1. Turn ignition switch OFF.
    2. Disconnect rear window defogger relay.
    3. Check continuity between rear window defogger relay connector B109 terminal 5 and condenser connector B34 terminal 1.

      5 (B/W) - 1 (B/W): Continuity should exist. 

    OK or NG 

    1. OK: Check the condition of the harness and the connector.
    2. NG: Repair or replace harness.
      Fig 6: Checking Continuity Between Rear Window Defogger Relay Connector B109 Terminal 5 And Condenser Connector B34 Terminal 1
      G02354948Courtesy of NISSAN MOTOR CO., U.S.A.
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