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Home >> Infiniti >> 2015 >> Q60 IPL >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Convertible) >> DTC/Circuit Diagnosis >> Encoder >> Passenger Side >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK ENCODER SIGNAL

    1. Turn ignition switch ON.
    2. Check signal between power window sub-switch harness connector and ground with oscilloscope.
      (+) (-) Signal
      (Reference value)
      Power window sub-switch
      Connector Terminal
      D38 12 Ground Refer to the following signal
      15
      Fig 1: Terminal Voltage Graph
      G05974396Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    Replace power window sub-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 sub-switch connector and passenger side power window motor connector.
    3. Check continuity between power window sub-switch harness connector and passenger side power window motor harness connector.
      Power window sub-switch Passenger side power window motor Continuity
      Connector Terminal Connector Terminal
      D38 12 D40 2 Existed
      15 5
    4. Check continuity between power window sub-switch connector and ground.
      Power window sub-switch Ground Continuity
      Connector Terminal
      D38 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 power window sub-switch connector.
    2. Turn ignition switch ON.
    3. Check voltage between passenger side power window motor harness connector and ground.
      (+) (-) Voltage (V)
      (Approx.)
      Passenger side power window motor
      Connector Terminal
      D40 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 sub-switch connector.
    3. Check continuity between power window sub-switch harness connector and passenger side power window motor harness connector.
      Power window sub-switch Passenger side power window motor Continuity
      Connector Terminal Connector Terminal
      D38 4 D40 4 Existed
    4. Check continuity between power window sub-switch harness connector and ground.
      Power window sub-switch Ground Continuity
      Connector Terminal
      D38 4 Not existed

    Is the inspection result normal?

    YES 

    Replace power window sub-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 sub-switch connector.
    3. Check continuity between power window sub-switch harness connector and passenger side power window motor harness connector.
      Power window sub-switch Passenger side power window motor Continuity
      Connector Terminal Connector Terminal
      D38 3 D40 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 sub-switch connector.
    2. Check continuity between power window sub-switch harness connector and ground.
      Power window sub-switch Ground Continuity
      Connector Terminal
      D38 3 Existed

    Is the inspection result normal?

    YES 

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

    NO 

    Replace power window sub-switch. Refer to REMOVAL AND INSTALLATION .

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