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 value)
   Door switch
   Connector		Terminal
   Driver side	B42	3	Ground	Courtesy of NISSAN NORTH AMERICA, INC. 11.8 V
   Passenger side	B70	3
   Rear LH	B44	3
   Rear RH	B78	3

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.

   Door switch			BCM		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	B42	3	M15	96	Existed
   Passenger side	B70			94
   Rear LH	B44			82
   Rear RH	B78			93

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

   Door switch			Ground	Continuity
   Connector		Terminal
   Driver side	B42	3		Not existed
   Passenger side	B70
   Rear LH	B44
   Rear RH	B78

Is the inspection result normal?

YES

Replace BCM. Refer to BCM : Removal & 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 Inspection .

INSPECTION END