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Home >> Nissan-Datsun >> 2015 >> Quest SL >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Front Window Anti-Pinch) >> DTC/Circuit Diagnosis >> Encoder Circuit >> Driver Side >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK ENCODER PULSE SIGNAL

    1. Turn ignition switch ON.
    2. Check signal between power window main switch harness connector and ground using an oscilloscope.
      Fig 1: Checking Signal Between Power Window Main Switch Harness Connector And Ground Using Oscilloscope
      G06934392Courtesy of NISSAN NORTH AMERICA, INC.
      (+) (-) Signal
      (Reference Value)
      Power Window Main Switch
      Connector Terminal
      D5 9 Ground Refer to the following signal
      13

    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 front power window motor (driver side) connector.
    3. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.
      Power Window Main Switch Front Power Window Motor (Driver Side) Continuity
      Connector Terminal Connector Terminal
      D5 9 D7 3 Existed
      13 5
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D5 9 Not existed
      13

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY

    1. Connect power window main switch connector.
    2. Turn ignition switch ON.
    3. Check voltage between front power window motor (driver side) harness connector and ground.
      (+) (-) Voltage (V)
      Front Power Window Motor (Driver Side)
      Connector Terminal
      D7 4 Ground 9-16

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 4  .

  4. CHECK ENCODER POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector.
    3. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.
      Power Window Main Switch Front Power Window Motor (Driver Side) Continuity
      Connector Terminal Connector Terminal
      D5 15 D7 4 Existed
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D5 15 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 ENCODER 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 front power window motor (driver side) harness connector.
      Power Window Main Switch Front Power Window Motor (Driver Side) Continuity
      Connector Terminal Connector Terminal
      D5 2 D7 6 Existed
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D5 2 Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    Repair or replace harness.

  6. CHECK ENCODER 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
      D5 2 Existed

    Is the inspection result normal?

    YES 

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

    NO 

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

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