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Diagnosis Procedure

  1. CHECK ENCODER PULSE SIGNAL
    1. Turn power switch ON.
    2. Check signal between power window main switch harness connector and ground with oscilloscope.
      ENCODER PULSE SIGNAL REFERENCE

      (+) (-) Signal (Reference value)
      Power window main switch
      Connector Terminal
      D35 4 Ground Refer to following signal
      5
      Fig 1: Encoder Pulse Signal
      G06934392Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: GO TO  7.

      NO: GO TO 2.

  2. CHECK ENCODER SIGNAL CIRCUIT
    1. Turn power 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.
      CONTINUITY REFERENCE CHART

      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D35 4 D37 5 Existed
      5 4
    4. Check continuity between power window main switch harness connector and ground.
      CONTINUITY REFERENCE CHART

      Power window main switch Ground Continuity
      Connector Terminal
      D35 4 Not existed
      5

      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 power switch ON.
    3. Check voltage between front power window motor (driver side) harness connector and ground.
      VOLTAGE REFERENCE CHART

      (+) (-) Voltage (V) (Approx.)
      Front power window motor (driver side)
      Connector Terminal
      D37 1 Ground 9 - 16

      Is the inspection result normal? 

      YES: GO TO  5.

      NO: GO TO 4.

  4. CHECK ENCODER POWER SUPPLY CIRCUIT
    1. Turn power 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.
      CONTINUITY REFERENCE CHART

      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D35 14 D37 1 Existed
    4. Check continuity between power window main switch harness connector and ground.
      CONTINUITY REFERENCE CHART

      Power window main switch Ground Continuity
      Connector Terminal
      D35 14 Not existed

      Is the inspection result normal? 

      YES: Replace power window main switch.

      NO: Repair or replace harness.

  5. CHECK ENCODER GROUND CIRCUIT
    1. Turn power switch OFF.
    2. Check continuity between front power window motor (driver side) harness connector and ground.
      CONTINUITY REFERENCE CHART

      Front power window motor (driver side) Ground Continuity
      Connector Terminal
      D37 6 Existed

      Is the inspection result normal? 

      YES: GO TO  7.

      NO: GO TO 6.

  6. CHECK ENCODER GROUND CIRCUIT
    1. Disconnect power window main switch connector.
    2. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.
      CONTINUITY REFERENCE CHART

      Power window main switch Front power window motor (driver side) Continuity
      Connector Terminal Connector Terminal
      D35 12 D37 6 Existed
    3. Check continuity between power window main switch harness connector and ground.
      CONTINUITY REFERENCE CHART

      Power window main switch Ground Continuity
      Connector Terminal
      D35 12 Not existed

      Is the inspection result normal? 

      YES: Replace front power window motor (driver side).

      NO: Repair or replace harness.

  7. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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