Diagnosis Procedure

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

   (+)			(-)	Voltage (V) (Approx.)
   Front door switch
   Connector		Terminal
   Driver side	B16	2	Ground	Courtesy of NISSAN MOTOR CO., U.S.A.
   Passenger side	B216

Is the inspection result normal? 

YES: GO TO  3.

NO: GO TO  2.

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

   BCM		Front door switch		Continuity
   Connector	Terminal	Connector	Terminal
   M123	124	B216	2	Exists
   	150	B16

3. Check continuity between BCM harness connector and ground.
   CONTINUITY SPECIFICATION
   
   

   BCM		Ground	Continuity
   Connector	Terminal
   M123	124		Not exist
   	150

Is the inspection result normal? 

YES: Replace BCM. Refer to REMOVAL AND INSTALLATION .

NO: Repair or replace harness.

Check front door switch.

Refer to COMPONENT INSPECTION  .

Is the inspection result normal? 

YES: GO TO  4.

NO: Replace malfunction front door switch. Refer to REMOVAL AND INSTALLATION .

Refer to INTERMITTENT INCIDENT .

INSPECTION END