Check Power Supply & Ground Circuit

WARNING: This page is about a different car, the 2004 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES
- Check fuses for blown-out.
  
  Fig 1: Power Supply & Ground Circuit Check Fuse Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
Refer to WIRING DIAGRAM - TAIL/L - .

OK or NG
1. OK : GO TO 2.
2. NG : If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. .
CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connector.
2. Check voltage between BCM harness connector and ground.
  
  Fig 2: BCM Harness Connector & Ground Voltage Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : GO TO 3.
2. NG : Check harness for open or short between BCM and fuse.
  
  Fig 3: Checking Voltage Between BCM Harness Connector & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.

Fig 4: BCM Harness Connector & Ground Continuity Table
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK : INSPECTION END
2. NG : Check ground circuit harness.
  
  Fig 5: Checking Continuity Between BCM Harness Connector & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.