Check For Power Supply And Ground Circuit

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES
- Check for blown fuses.
  
  Fig 1: Blown Fuses Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
Refer to "WIRING DIAGRAM - ROOM/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. Refer to "POWER SUPPLY ROUTING CIRCUIT ".
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM connector and ground.
  
  Fig 2: Voltage Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Voltage Between BCM Connector And Ground
  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.
CHECK GROUND CIRCUIT
Check continuity between BCM and ground.

Fig 4: Continuity Table
Courtesy of NISSAN MOTOR CO., U.S.A.

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

OK or NG
1. OK: INSPECTION END
2. NG: Check harness ground circuit.