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: Identifying BCM Fuses/Fusible Links Number And Signal Name
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to LT wiring diagram LT-H/LAMP-01, under WIRING DIAGRAM - H/LAMP - .
OK or NG

OK : GO TO 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: Identifying Terminal Voltage Specifications (Power Supply Circuit)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Inspecting Power Supply Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to LT wiring diagram LT-H/LAMP-01, under WIRING DIAGRAM - H/LAMP - .
OK or NG

OK : GO TO 3.

NG : Replace BCM power supply circuit harness.
GROUND CIRCUIT INSPECTION
Check continuity between the following connector of BCM and body ground.

Fig 4: Identifying Terminal Voltage Specifications (Ground Circuit)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Inspecting Ground Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to LT wiring diagram LT-H/LAMP-01, under WIRING DIAGRAM - H/LAMP - .
OK or NG

OK : Normal

NG : Replace BCM ground circuit harness.