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Home >> Infiniti >> 2011 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System -- G37 Convertible >> DTC/Circuit Diagnosis >> Encoder >> Passenger Side >> PASSENGER SIDE : Diagnosis Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

PASSENGER SIDE : Diagnosis Procedure

  1. CHECK ENCODER SIGNAL
    1. Turn ignition switch ON.
    2. Check signal between power window sub-switch harness connector and ground with oscilloscope.
    TERMINALS SIGNAL REFERENCE CHART

    (+) (-) Signal (Reference value)
    Power window sub-switch
    Connector Terminal
    D38 12 Ground Refer to the following signal
    15
    Fig 1: Encorder Signal Waveform
    G07161848

    Is the inspection result normal? 

    YES: Replace power window sub-switch. Refer to "REMOVAL AND INSTALLATION ".

    NO: GO TO 2.

  2. CHECK ENCODER SIGNAL CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect power window sub-switch connector and passenger side power window motor connector.
    3. Check continuity between power window sub-switch harness connector and passenger side power window motor harness connector.
      CONTINUITY REFERENCE CHART

      Power window sub-switch Passenger side power window motor Continuity
      Connector Terminal Connector Terminal
      D38 12 D40 2 Existed
      15 5
    4. Check continuity between power window sub-switch connector and ground.
    CONTINUITY REFERENCE CHART

    Power window sub-switch - Continuity
    Connector Terminal -
    D38 12 Ground Not existed
    15

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY CIRCUIT 1
    1. Connect power window sub-switch connector.
    2. Turn ignition switch ON.
    3. Check voltage between passenger side power window motor harness connector and ground.
    VOLTAGE REFERENCE CHART

    (+) (-) Voltage (V) (Approx.)
    Passenger side power window motor
    Connector Terminal
    D40 4 Ground Battery voltage

    Is the measurement value within the specification? 

    YES: GO TO 5.

    NO: GO TO 4.

  4. CHECK ENCODER POWER SUPPLY CIRCUIT 2
    1. Turn ignition switch OFF.
    2. Disconnect power window sub-switch connector.
    3. Check continuity between power window sub-switch harness connector and passenger side power window motor harness connector.
      CONTINUITY REFERENCE CHART

      Power window sub-switch Passenger side power window motor Continuity
      Connector Terminal Connector Terminal
      D38 4 D40 4 Existed
    4. Check continuity between power window sub-switch harness connector and ground.
    CONTINUITY REFERENCE CHART

    Power window sub-switch - Continuity
    Connector Terminal -
    D38 4 Ground Not existed

    Is the inspection result normal? 

    YES: Replace power window sub-switch. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace harness.

  5. CHECK GROUND CIRCUIT 1
    1. Turn ignition switch OFF.
    2. Disconnect power window sub-switch connector.
    3. Check continuity between power window sub-switch harness connector and passenger side power window motor harness connector.
    CONTINUITY REFERENCE CHART

    Power window sub-switch Passenger side power window motor Continuity
    Connector Terminal Connector Terminal
    D38 3 D40 1 Existed

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Repair or replace harness.

  6. CHECK GROUND CIRCUIT 2
    1. Connect power window sub-switch connector.
    2. Check continuity between power window sub-switch harness connector and ground.
    CONTINUITY REFERENCE CHART

    Power window sub-switch - Continuity
    Connector Terminal -
    D38 3 Ground Existed

    Is the inspection result normal? 

    YES: Replace passenger side power window motor. Refer to "REMOVAL AND INSTALLATION ".

    NO: Replace power window sub-switch. Refer to "REMOVAL AND INSTALLATION ".

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