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Diagnosis Procedure

  1. CHECK ENCODER SIGNAL

    1. Turn ignition switch ON.
    2. Check signal between rear power window switch LH harness connector and ground using oscilloscope.
      (+) (-) Signal
      (Reference value)
      Rear power window switch LH
      Connector Terminal
      D57 12 Ground Refer to following signal
      15
      Fig 1: Checking Signal Between Power Window Main Switch Harness Connector And Ground Using Oscilloscope
      G06934392Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    Replace rear power window switch LH.

    NO 

    GO TO STEP 2  .

  2. CHECK ENCODER SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect rear power window switch LH connector and rear power window motor LH connector.
    3. Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.
      Rear power window switch LH Rear power window motor LH Continuity
      Connector Terminal Connector Terminal
      D57 12 D52 5 Existed
      15 6
    4. Check continuity rear power window switch LH harness connector and ground.
      Rear power window switch LH Ground Continuity
      Connector Terminal
      D57 12 Not existed
      15

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY CIRCUIT 1

    1. Connect rear power window switch LH connector.
    2. Turn ignition switch ON.
    3. Check voltage between rear power window motor LH harness connector and ground.
      (+) (-) Voltage (V)
      (Approx.)
      Rear power window motor LH
      Connector Terminal
      D52 2 Ground 12

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 4  .

  4. CHECK ENCODER POWER SUPPLY CIRCUIT 2

    1. Turn ignition switch OFF.
    2. Disconnect rear power window switch LH connector.
    3. Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.
      Rear power window switch LH Rear power window motor LH Continuity
      Connector Terminal Connector Terminal
      D57 4 D52 2 Existed
    4. Check continuity between rear power window switch LH harness connector and ground.
      Rear power window switch LH Ground Continuity
      Connector Terminal
      D57 4 Not existed

    Is the inspection result normal?

    YES 

    Replace rear power window switch LH.

    NO 

    Repair or replace harness.

  5. CHECK GROUND CIRCUIT 1

    1. Turn ignition switch OFF.
    2. Disconnect rear power window switch LH harness connector.
    3. Check continuity between rear power window switch LH harness connector and rear power window motor LH harness connector.
    Rear power window switch LH Rear power window motor LH Continuity
    Connector Terminal Connector Terminal
    D57 3 D52 4 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    Repair or replace harness.

  6. CHECK GROUND CIRCUIT 2

    1. Connect rear power window switch LH harness connector.
    2. Check continuity between rear power window switch LH harness connector and ground.
      Rear power window switch LH Ground Continuity
      Connector Terminal
      D57 3 Existed

    Is the inspection result normal?

    YES 

    Replace rear power window motor LH.

    NO 

    Replace rear power window switch LH.

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