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Home >> Nissan-Datsun >> 2017 >> Quest S >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Front Window Anti-Pinch) >> Circuit Diagnosis >> Power Window Serial Link >> Power Window Main Switch >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK POWER WINDOW SWITCH OUTPUT 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 14 Ground
      GNSJPMIA0013GB-013Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    GO TO STEP 2  .

  2. CHECK POWER WINDOW SERIAL LINK SIGNAL

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector.
    3. Turn ignition switch ON.
    4. Check voltage between power window main switch harness connector and ground.
      (+) (-) Voltage (V)
      Power window main switch
      Connector Terminal
      D5 14 Ground 9 - 16

    Is the inspection result normal?

    YES 

    Replace power window main switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    GO TO STEP 3  .

  3. CHECK POWER WINDOW SERIAL LINK CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect BCM connector.
    3. Check continuity between BCM harness connector and power window main switch harness connector.
      BCM Power window main switch Continuity
      Connector Terminal Connector Terminal
      M121 8 D5 14 Existed
    4. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M121 8 Not existed

    Is the inspection result normal?

    YES 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

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