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Encoder Circuit Check

  1. CHECK ENCODER OPERATION
    1. Turn ignition switch ON.
    2. Check signal between main power window and door lock/unlock switch connector and ground with oscilloscope.
    SIGNAL SPECIFICATION

    Terminals Signal (Reference value)
    (+) (-)
    Main power window and door lock/unlock switch connector Terminal
    D7 9 Ground Refer to following signal
    13
    Fig 1: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground
    G05046757Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Signal Waveform Graph
    G04888492Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

    NO: GO TO 2

  2. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY
    1. Turn ignition switch ON.
    2. Check voltage between front power window motor LH connector and ground.
    VOLTAGE SPECIFICATION

    Terminal Voltage (V) (Approx.)
    (+) (-)
    Front power window motor LH connector Terminal
    D9 3 Ground 10
    Fig 3: Checking Voltage Between Front Power Window Motor LH Connector And Ground
    G04912950Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the measurement value within the specification? 

    YES: GO TO  4

    NO: GO TO 3

  3. CHECK HARNESS CONTINUITY 1
    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch and front power window motor LH.
    3. Check continuity between main power window and door lock/unlock switch connector (A) and front power window motor LH connector (B).
      CONTINUITY SPECIFICATION

      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 (A) 15 D9 (B) 3 Yes
    4. Check continuity between main power window and door lock/unlock switch connector (A) and ground.
      CONTINUITY SPECIFICATION

      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D7 (A) 15 No
      Fig 4: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector (A) And Ground
      G05713607Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: Replace main power window and door lock/unlock switch. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace harness.

  4. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH.
    3. Check continuity between front power window motor LH connector and ground.
    CONTINUITY SPECIFICATION

    Front power window motor LH connector Terminal Ground Continuity
    D9 4 Yes
    Fig 5: Checking Continuity Between Front Power Window Motor LH Connector And Ground
    G04912939Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO  6

    NO: GO TO 5

  5. CHECK HARNESS CONTINUITY 2
    1. Disconnect main power window and door lock/unlock switch.
    2. Check continuity between main power window and door lock/unlock switch connector and front power window motor LH connector.
      CONTINUITY SPECIFICATION

      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 2 D9 4 Yes
      Fig 6: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch And Front Power Window Motor LH Connectors
      G04912953Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: Replace main power window and door lock/unlock switch. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.

  6. CHECK HARNESS CONTINUITY 3
    1. Disconnect main power window and door lock/unlock switch.
    2. Check continuity between main power window and door lock/unlock switch connector (A) and front power window motor LH connector (B).
      CONTINUITY SPECIFICATION

      Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity
      D7 (A) 9 D9 (B) 5 Yes
      13 6
    3. Check continuity between main power window and door lock/unlock switch connector (A) and ground.
      CONTINUITY SPECIFICATION

      Main power window and door lock/unlock switch connector Terminal Ground Continuity
      D7 (A) 9 No
      13
      Fig 7: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector (A) And Ground
      G05713610Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: Replace front power window motor LH. Refer to "FRONT DOOR GLASS REGULATOR ".

    NO: Repair or replace harness.

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