BCM Power Supply and Ground Circuit Check

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE
Check the following BCM fuse and fusible link.

Fig 1: BCM Fuse Number & Specification Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

NOTE: Refer to COMPONENT PARTS AND HARNESS CONNECTOR LOCATION .

OK or NG
- OK: GO TO 2.
- NG: If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to POWER SUPPLY ROUTING CIRCUIT .
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between BCM connectors M18 terminal 38 and M19 terminal 55 and ground.
  
  Fig 2: Checking Voltage Between BCM Connectors M18 Terminal 38 & Connector M19 Terminal 55 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: BCM Connectors M18, M19 Terminals Voltage Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.
CHECK GROUND CIRCUIT
Check continuity between BCM connector M19 terminal 52 and ground.

Fig 4: Checking Continuity Between BCM Connector M19 Terminal 52 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: BCM Connector M19 Terminal Continuity Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Power supply and ground circuit is OK.
- NG: Repair or replace harness.