Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect malfunctioning door switch connector.
3. Check signal between malfunctioning door switch harness connector and ground using oscilloscope.
   SIGNAL REFERENCE
   
   

   (+)			(-)	Signal (Reference value)
   Door switch
   Connector		Terminal
   Driver side	B34	1	Ground	Courtesy of NISSAN MOTOR CO., U.S.A. 7.0 - 8.0 V
   Passenger side	B220			Courtesy of NISSAN MOTOR CO., U.S.A. 7.0 - 8.0 V
   Rear LH	B71			Courtesy of NISSAN MOTOR CO., U.S.A. 7.0 - 8.0 V
   Rear RH	B221			Courtesy of NISSAN MOTOR CO., U.S.A. 7.0 - 8.0 V

   Is the inspection result normal? 

   YES: GO TO  3.

   NO: GO TO 2.

1. Disconnect BCM connector.
2. Check continuity between door switch harness connector and BCM harness connector.
   CONTINUITY SPECIFICATION
   
   

   Door switch			BCM		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	B34	1	M69	47	Existed
   Passenger side	B220			45
   Rear LH	B71			48
   Rear RH	B221			46

3. Check continuity between door switch harness connector and ground.
   CONTINUITY SPECIFICATION
   
   

   Door switch			Ground	Continuity
   Connector		Terminal
   Driver side	B34	1		Not existed
   Passenger side	B220
   Rear LH	B71
   Rear RH	B221

   Is the inspection result normal? 

   YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

   NO: Repair or replace harness.

Check continuity between door switch harness connector and ground.

Is the inspection result normal? 

YES: GO TO 4.

NO: Repair or replace harness.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 5.

NO: Replace malfunctioning door switch.

Refer to "INTERMITTENT INCIDENT ".

INSPECTION END