BCM Power Supply And Ground Circuit Inspection

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.

FUSE INSPECTION
Check the following fuses and fusible link in the fuse block (J/B) and fuse and fusible link box.

Fig 1: Fuse Inspection Description Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

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 ".
POWER SUPPLY CIRCUIT INSPECTION
Disconnect BCM connector, and connect vehicle-side connector terminals shown below to positive probe and body ground to negative probe. Measure voltage.

Fig 2: Power Supply Circuit Voltage Specifications Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.

GROUND CIRCUIT INSPECTION

Check continuity between BCM vehicle-side connector and body ground.

CONTINUITY SPECIFICATIONS TABLE

Unit	Terminal No.	Signal name	Ignition switch	Continuity
BCM	52	Ground	OFF	Yes

OK or NG

OK: Power supply and ground circuits are normal.
NG: Repair or replace harness.