Inspection Of BCM Power Supply And Ground Circuit

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.

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

Fig 1: BCM Fuses Checking Table
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to SYSTEM WIRING DIAGRAMS .
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: Voltage Table Of BCM Connector And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Measuring Voltage, By Connecting Following Connector Terminals To Positive Probe And Body Ground To Negative One
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to SYSTEM WIRING DIAGRAMS .
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: Continuity Table Of BCM Connector And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Continuity Between BCM Connector And Body Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to SYSTEM WIRING DIAGRAMS .
OK or NG
1. OK : Normal
2. NG : Replace BCM ground circuit harness.