Check Power Supply And Ground Circuit

• Check fuses for blown-out.
  CHECK POWER SUPPLY AND GROUND CIRCUIT
  
  

  Unit	Power source	Fuse and fusible link No.
  BCM	Battery	M
  		22
  	Ignition switch ON or START position	1
  	Ignition switch ACC or ON position	6
  IPDM E/R	Battery	71
  		78
  Rear combination lamp control unit	Battery	20

  Refer to WIRING DIAGRAM - TAIL/L -  .

OK or NG

1. OK: GO TO 2.
2. NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to POWER DISTRIBUTION in SYSTEM WIRING DIAGRAMS article.

1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
   Fig 1: Checking Voltage Between BCM Harness Connector And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   CHECK POWER SUPPLY CIRCUIT
   
   

   Terminals			Ignition switch position
   (+)		(-)	OFF	ACC	ON
   Connector	Terminal (Wire color)
   M3	11 (LG/R)	Ground	0V	Battery voltage	Battery voltage
   	38(W/L)		0V	0V	Battery voltage
   M4	42 (L/R)		Battery voltage	Battery voltage	Battery voltage
   	55 (G)		Battery voltage	Battery voltage	Battery voltage

OK or NG

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

Check continuity between BCM harness connector and ground.

OK or NG

1. OK: INSPECTION END
2. NG: Check ground circuit harness.
   Fig 2: Checking Continuity Between BCM Harness Connector And Ground

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