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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 559 (Power Window Control System) >> Symptom Diagnosis >> Power Windows Do Not Operate With Main Power Window And Lock/Unlock Switch >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BCM POWER SUPPLY AND GROUND CIRCUIT 

    Check BCM power supply and ground circuit.

    Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace the malfunctioning parts.

  2. CHECK MAIN POWER WINDOW AND LOCK/UNLOCK SWITCH POWER SUPPLY AND GROUND CIRCUIT 

    Check power window switch power supply and ground circuit.

    Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace the malfunctioning parts.

  3. CHECK MAIN POWER WINDOW AND LOCK/UNLOCK SWITCH SERIAL LINK CIRCUIT 

    Check power window serial link circuit.

    Refer to Component Function Check .

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace the malfunctioning parts.

  4. CONFIRM THE OPERATION 

    Confirm the operation again.

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    GO TO 1.