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Home >> Nissan-Datsun >> 2017 >> Qashqai SL >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System >> DTC/Circuit Diagnosis >> Encoder Circuit >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK ENCODER SIGNAL

    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
      D9 4 Ground Refer to following signal
      5
      G06934392Courtesy 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 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
      D9 4 D8 3 Existed
      5 5
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch - Continuity
      Connector Terminal
      D9 4 Ground Not existed
      5

    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
      Front power window motor (driver side)
      Connector Terminal
      D8 4 Ground 9 - 16 V

    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
      D9 14 D8 4 Existed
    4. Check continuity between power window main switch harness connector and ground.
      Power window main switch - Continuity
      Connector Terminal
      D9 14 Ground 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
      D9 12 D8 6 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 connector and ground.
      Power window main switch - Continuity
      Connector Terminal
      D9 12 Ground 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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