Inspection of BCM Power Supply and Ground Circuit

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

FUSE AND FUSIBLE LINK INSPECTION
Check if any of the following BCM fuses and fusible links are blown.

Fig 1: Fuse And Fusible Link
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 2.
2. NG: Replace fuse or fusible link.
POWER SUPPLY CIRCUIT INSPECTION
Disconnect BCM connector. To measure voltage, connect following connector terminals to positive probe and body ground to negative one.

Fig 2: Power Supply Circuit Terminal Voltage
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Connecting Connector Terminals And Body Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 3.
2. NG: Replace BCM power supply circuit harness.
GROUND CIRCUIT INSPECTION
Check continuity between the following connector of BCM and body ground.

Fig 4: Ground Circuit Terminal Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Continuity Between Connector Of BCM And Body Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: Normal
2. NG: Replace BCM ground circuit harness.