Inspection For Power Supply And Ground Circuit

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES

Check for blown BCM fuses.

BCM FUSES CHART

Unit	Power source	Fuse No.
BCM	Battery	j
BCM	Ignition switch ON or START	16

Refer to WIRING DIAGRAM - CHIME - .

OK or NG

OK: GO TO 2.
NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to "POWER DISTRIBUTION and/or GROUND DISTRIBUTION ".

CHECK POWER SUPPLY CIRCUIT

Disconnect BCM connector.

Check voltage between BCM harness connector terminals and ground.

TERMINALS CHART

Terminals			Ignition switch position
(+)		(-)	OFF	ACC	ON
Connector	Terminal (Wire color)
M19	55 (W/B)	Ground	Battery voltage	Battery voltage	Battery voltage
M18	38 (R)		0V	0V	Battery voltage

Fig 1: Checking Voltage Between BCM Harness Connector Terminals And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.
NG: Check harness for open or short between BCM and fuse.

CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between BCM harness connector M19 terminals 49 (B) and 52 (B/W), and ground.
  1. Continuity should exist.
  OK or NG
  1. OK: INSPECTION END.
  2. NG: Repair harness or connector.
    
    Fig 2: Checking Continuity Between BCM Harness Connector M19 Terminals 49 (B) And 52 (B/W), And Ground
    Courtesy of NISSAN MOTOR CO., U.S.A.