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Power Window Sub-Switch Power Supply and Ground Circuit Check

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. POWER SUPPLY CIRCUIT CHECK 
    1. Turn ignition switch ON.
    2. Check voltage between power window sub-switch connector D43 terminal 10 and ground.
      1. 10 (R) - Ground: Battery voltage. 
      Fig 1: Checking Power Window Sub-Switch Power Supply and Ground Circuit (Terminal 10 - Ground)
      G02057432Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 2.

    NG: GO TO  3 .

  2. GROUND CIRCUIT CHECK 
    1. Turn ignition switch OFF.
    2. Disconnect power window sub-switch connector.
    3. Check continuity between power window sub-switch connector D43 terminal 11 and ground.
      1. 11 (B) - Ground: Continuity should exist. 

    OK or NG 

    OK: Power window sub-switch power supply and ground circuit are OK. Further inspection is necessary. Refer to symptom chart.

    NG: Repair or replace harness.

    Fig 2: Checking Continuity Between Power Window Sub-Switch Connector D43 (Terminal 11- Ground)
    G02057433Courtesy of NISSAN MOTOR CO., U.S.A.
  3. POWER WINDOW SUB-SWITCH POWER SUPPLY CIRCUIT CHECK 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and power window sub-switch connector.
    3. Check continuity between BCM connector M1 terminal 28 and power window sub-switch connector D43 terminal 10.
      1. 28 (W) - 10 (R): Continuity should exist. 
      Fig 3: Checking Power Window Sub-Switch Power Supply Circuit (Terminal 28-10 And 28-Ground)
      G02057434Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between BCM connector M1 terminal 28 and ground.
      1. 28 (W) - Ground: Continuity should not exist. 

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness.

  4. CHECK BCM OUTPUT SIGNAL 
    1. Connect BCM connector.
    2. Turn ignition switch ON.
    3. Check voltage between BCM connector M1 terminal 28 and ground.
      1. 28 (W) - Ground: Battery voltage. 
      Fig 4: Checking BCM Output Signal (Terminal 28 - Ground)
      G02057435Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Check the condition of the harness and the connector.

    NG: Replace BCM.

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