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Encoder Circuit Check Front LH

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 FRONT POWER WINDOW MOTOR LH POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH.
    3. Turn ignition switch ON.
    4. Check voltage between front power window motor LH connector D9 terminal 3 and ground.

      3 - Ground : Approx. 10V 

      Fig 1: Checking Voltage Between Front Power Window Motor LH Connector D9 Terminal 3 And Ground
      G04912950

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

  2. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch.
    3. Check continuity between front power window motor LH connector and main power window and door lock/unlock switch connector.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 15 Front power window motor LH: D9 3 Yes
    4. Check continuity between front power window motor LH connector and ground.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 3 No
      Fig 2: Checking Continuity Between Front Power Window Motor LH Connector And Ground
      G04912951

    OK or NG 

    OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

    NG: Repair or replace harness.

  3. CHECK ENCODER GROUND 
    1. Turn ignition switch OFF.
    2. Check continuity between front power window motor LH connector D9 terminal 4 and ground.

      4 - Ground : Continuity should exist. 

      Fig 3: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 4 And Ground
      G04912939

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

  4. CHECK ENCODER GROUND CIRCUIT 
    1. Disconnect main power window and door lock/unlock switch.
    2. Check continuity between front power window motor LH connector D9 (B) terminal 4 and main power window and door lock/ unlock switch connector D7 (A) terminal 2.

      4 - 2 : Continuity should exist. 

      Fig 4: Checking Continuity Between Front Power Window Motor LH Connector D9 (B) Terminal 4 And Connector D7 (A) Terminal 2
      G04912953

    OK or NG 

    OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

    NG: Repair or replace harness.

  5. CHECK ENCODER SIGNAL 
    1. Connect front power window motor LH.
    2. Turn ignition switch ON.
    3. Check the signal between main power window and door lock/ unlock switch connector and ground with oscilloscope.
      TERMINAL CONDITION CHART

      Connector Terminals Condition Signal
      (+) (-)
      D7 13 Ground Opening
      G04877356
      Fig 5: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground
      G04902764

    OK or NG 

    OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

    NG: GO TO 6.

  6. CHECK ENCODER CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH and main power window and door lock/unlock switch.
    3. Check continuity between front power window motor LH connector and main power window and door lock/unlock switch connector.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 13 Front power window motor LH: D9 6 Yes
    4. Check continuity between front power window motor LH connector and ground.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 6 No
      Fig 6: Checking Continuity Between Front Power Window Motor LH Connector And Ground
      G04912956

    OK or NG 

    OK: Replace front power window motor LH. Refer to "FRONT DOOR GLASS REGULATOR ".

    NG: Repair or replace harness.

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