Check BCM Power Supply and Ground Circuit

First perform the "SELF-DIAG RESULTS" in "BCM" with CONSULT-II, when perform the each trouble diagnosis. Refer to "CAN COMMUNICATION INSPECTION USING CONSULT-II (SELF-DIAGNOSIS) ".

CHECK FUSE
- Check 15A fuse [No.1, located in the fuse block (J/B)]
- Check 15A fuse [No.22, located in the fuse block (J/B)]
- Check 50A fusible link (letter M located in the fuse and fusible link box).
  NOTE: Refer to "COMPONENT PARTS AND HARNESS CONNECTOR LOCATION ".
OK or NG

OK : GO TO 2.

NG : If fuse is blown out, 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 ON.
2. Check voltage between BCM connector M3, M4 terminal 38, 42, 55 and ground.
  38 (W/L) - Ground : Battery voltage
  
  42 (L/R) - Ground : Battery voltage
  
  55 (G) - Ground : Battery voltage
  
  Fig 1: Identifying Voltage Between BCM Connector M3, M4 Terminal 38, 42, 55 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : GO TO 3.

NG : Check BCM power supply circuit for open or short.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM connector M4 terminal 49, 52 and ground.
  49 (B) - Ground : Continuity should exist.
  
  52 (B) - Ground : Continuity should exist.
  
  Fig 2: Identifying Continuity Between BCM Connector M4 Terminal 49, 52 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : Power supply and ground circuit are OK.

NG : Check BCM ground circuit for open or short.