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Home >> Nissan-Datsun >> 2012 >> Quest SL >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Driver Side Window Anti-Pinch) >> DTC/Circuit Diagnosis >> Encoder Circuit >> 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.
    (+) (-) Signal (Reference value)
    Power window main switch
    Connector Terminal
    D5 9 Ground Refer to the following signal
    13
    Fig 1: Checking Encoder Pulse Signal Using Oscilloscope
    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 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 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  5.

    NO: GO TO 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 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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