BCM Power Supply and Ground Circuit Inspection

• Check 50A fusible link (letter j, located in the fuse and fusible link box).
• Check 10A fuses [No. 6, 12 and 21, located in the fuse block (J/B)].

  OK or NG 

  OK: GO TO 2.

  NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors and ground.

   Connector	Terminals		Power source	Condition	Voltage (V) (Approx.)
   	(+)	(-)
   M18	11	Ground	ACC power supply	Ignition switch ACC or ON	Battery voltage
   	38	Ground	Ignition power supply	Ignition switch ON or START	Battery voltage
   M20	57	Ground	Battery power supply	Ignition switch OFF	Battery voltage
   	70	Ground	Battery power supply	Ignition switch OFF	Battery voltage

   Fig 1: Checking BCM Power Supply Circuit

   Courtesy of NISSAN NORTH AMERICA, INC.

   OK or NG 

   OK: GO TO 3.

   NG: Repair or replace the harness.

Check continuity between BCM connector M20 terminal 67 and ground.

67 - Ground: Continuity should exist  .

Fig 2: Checking Ground Circuit

Courtesy of NISSAN NORTH AMERICA, INC.

OK or NG 

OK: Power supply and ground circuit is OK.

NG: Repair or replace harness.