Main Power Window and Door Lock/Unlock Switch Power Supply Circuit Check System

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D7 terminal 10, D8 terminal 19 and ground.
  10 (W/L) - Ground: Battery voltage
  
  19 (W/R) - Ground: Battery voltage
OK or NG
- OK: GO TO 2.
- NG: Repair or replace harness.
  
  Fig 1: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 10, D8 Terminal 19 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between main power window and door lock/unlock switch connector D8 terminal 17 and ground.
  17 (B) - Ground: Continuity should exist.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.
  
  Fig 2: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector D8 Terminal 17 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M19 terminal 53, 54 and main power window and door lock/unlock switch connector D7 terminal 10 and D8 terminal 19.
  53 (W/L) - 10 (W/L): Continuity should exist.
  
  54 (W/R) - 19 (W/R): Continuity should exist.
OK or NG
- OK: GO TO 4.
- NG: Repair or replace harness.
  
  Fig 3: Checking Continuity Between BCM Connector M19 Terminal 53, 54 And Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 10 And D8 Terminal 19
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M19 terminal 53, 54 and ground.
  53 (W/L) - Ground: Battery voltage
  
  54 (W/R) - Ground: Battery voltage
OK or NG
- OK: Check the condition of the harness and the connector.
- NG: Replace BCM. Refer to REMOVAL AND INSTALLATION OF BCM .
  
  Fig 4: Checking Voltage Between BCM Connector M19 Terminal 53, 54 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.