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Home >> Infiniti >> 2015 >> Q60 S Limited >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Coupe) >> DTC/Circuit Diagnosis >> Encoder >> Driver Side >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK ENCODER OPERATION

    1. Turn ignition switch ON.
    2. Check signal between power window main switch harness connector and ground with oscilloscope.
      (+) (-) Signal
      (Reference value)
      Power window main switch
      Connector Terminal
      D8 9 Ground Refer to the following signal
      13
      Fig 1: Identifying Signal Waveform
      G05982168Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    Replace power window main switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    GO TO STEP 2  .

  2. CHECK ENCODER SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector and driver side power window motor connector.
    3. Check continuity between power window main switch harness connector and driver side power window motor harness connector.
      Power window main switch Driver side power window motor Continuity
      Connector Terminal Connector Terminal
      D8 9 D10 5 Existed
      13 2
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D8 9 Not existed
      13

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY CIRCUIT 1

    1. Connect power window main switch connector.
    2. Turn ignition switch ON.
    3. Check voltage between driver side power window motor harness connector and ground.
      (+) (-) Voltage (V)
      (Approx.)
      Driver side power window motor
      Connector Terminal
      D10 4 Ground Battery voltage

    Is the measurement value within the specification?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 4  .

  4. CHECK ENCODER POWER SUPPLY CIRCUIT 2

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector.
    3. Check continuity between power window main switch harness connector and driver side power window motor harness connector.
      Power window main switch Driver side power window motor Continuity
      Connector Terminal Connector Terminal
      D8 5 D10 4 Existed
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D8 5 Not existed

    Is the inspection result normal?

    YES 

    Replace power window main switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  5. CHECK GROUND CIRCUIT 1

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector.
    3. Check continuity between power window main switch harness connector and driver side power window motor harness connector.
      Power window main switch Driver side power window motor Continuity
      Connector Terminal Connector Terminal
      D8 14 D10 1 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    Repair or replace harness.

  6. CHECK GROUND CIRCUIT 2

    1. Connect power window main switch connector.
    2. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D8 14 Existed

    Is the inspection result normal?

    YES 

    Replace driver side power window motor. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace power window main switch. Refer to REMOVAL AND INSTALLATION .

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