BCM Power Supply and Ground Circuit Check

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

CHECK FUSE AND FUSIBLE LINK

Check the following BCM fuse and fusible link.

COMPONENT PARTS AND TERMINAL NUMBER DESCRIPTION CHART TABLE

Component Parts	Terminal No. (SIGNAL)	Ampere	No.	Location
BCM	42 (BAT power supply)	15A	3	Fuse block (J/B)
BCM	55 (BAT power supply)	50A	j	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, be sure to eliminate cause of problem before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector M19 terminals 42, 55 and ground.
  
  Fig 1: Voltage Specifications
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking Voltage Between BCM Connector M19 Terminals 42, 55 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.
CHECK GROUND CIRCUIT
Check continuity between BCM connector M19 terminal 52 and ground.

Fig 3: Continuity Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Checking Continuity Between BCM Connector M19 Terminal 52 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Power supply and ground circuit is OK.
- NG: Repair or replace harness.