Inspection For Power Supply And Ground Circuit

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

Inspection procedure

CHECK FUSE
Check if wiper or washer fuse is blown.

Fig 1: Power Supply And Ground Circuit - Fuse Check Reference
Courtesy of NISSAN MOTOR CO., U.S.A.

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. Disconnect BCM connectors.
2. Check voltage between BCM harness connector terminals and ground.
  
  Fig 2: BCM Harness Connector And Ground Voltage Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 3.
- NG: Check harness for open or short between BCM and fuse.
  
  Fig 3: Checking Voltage Between BCM Harness Connector Terminals And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
GROUND CIRCUIT INSPECTION (BCM)
Check for continuity between BCM terminal and ground.

Fig 4: BCM Terminal And Ground Continuity Specification Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Inspection End.
- NG: Repair/replace BCM ground circuit.
Fig 5: Checking For Continuity Between BCM Terminal And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.