Diagnosis Procedure

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

   (+)			(-)	Signal (Reference value)
   Door switch
   Connector		Terminal
   Driver side	B16	2	Ground	Courtesy of NISSAN MOTOR CO., U.S.A.
   Passenger side	B216	2		Courtesy of NISSAN MOTOR CO., U.S.A.
   Rear LH	B23	2		Courtesy of NISSAN MOTOR CO., U.S.A.
   Rear RH	B223	2		Courtesy of NISSAN MOTOR CO., U.S.A.

   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 REFERENCE CHART
   
   

   Door switch			BCM		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	B16	2	M123	150	Existed
   Passenger side	B216			124
   Rear LH	B23		M121	69
   Rear RH	B223			68

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

   Door switch			Ground	Continuity
   Connector		Terminal
   Driver side	B16	2		Not existed
   Passenger side	B216
   Rear LH	B23
   Rear RH	B223

   Is the inspection result normal? 

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

   NO: Repair or replace harness.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 4.

NO: Replace malfunctioning door switch. Refer to "REMOVAL AND INSTALLATION ".

Refer to "INTERMITTENT INCIDENT ".

INSPECTION END