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

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.
   1. 10 (W/L) - Ground: Battery voltage 
   2. 19 (W/R) - Ground: Battery voltage 

OK or NG

1. OK: GO TO 2.
2. NG: GO TO 3.

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.

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.
   1. 17 (B) - Ground: Continuity should exist. 

OK or NG

1. OK: Power supply and ground circuit are OK.
2. 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.

1. Disconnect BCM.
2. Check continuity between BCM connector M20 terminals 68, 69 and main power window and door lock/unlock switch connector D7 terminal 10 and D8 terminal 19.
   1. 68 (W/L) - 10 (W/L): Continuity should exist. 
   2. 69 (W/R) - 19 (W/R): Continuity should exist. 

OK or NG

1. OK: GO TO 4.
2. NG: Repair or replace harness.

Fig 3: Checking Continuity Between BCM Connector M20 Terminals 68, 69 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.

1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 terminals 68, 69 and ground.
   1. 68 (W/L) - Ground: Battery voltage 
   2. 69 (W/R) - Ground: Battery voltage 

OK or NG

1. OK: Check the condition of the harness and the connector.
2. NG: Replace BCM.

Fig 4: Checking Voltage Between BCM Connector M20 Terminals 68, 69 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.