Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CHECK DOOR SWITCH INPUT SIGNAL
   
   
   1. Turn ignition switch OFF.
   2. Check signal between BCM connector and ground with oscilloscope.

      Terminals			Door condition		Voltage (V) (Approx.)
      (+)		(-)
      BCM connector	Terminal
      B57	45	Ground	Front RH	OPEN	0
      				CLOSE	Courtesy of NISSAN NORTH AMERICA, INC. 7.0 - 8.0 V
      	46		Front LH	OPEN	0
      				CLOSE	Courtesy of NISSAN NORTH AMERICA, INC. 7.0 - 8.0 V

   Is the inspection result normal?

   YES 

   GO TO STEP 4 

   NO 

   GO TO STEP 2 

2. CHECK DOOR SWITCH CIRCUIT
   
   
   1. Disconnect BCM connector.
   2. Check continuity between BCM connector and door switch connector.

      BCM connector	Terminal	Door switch connector	Terminal	Continuity
      B57	45	B28 (Front RH)	3	Yes
      	46	B21 (Front LH)

   3. Check continuity between BCM connector and ground.

      BCM connector	Terminal	Ground	Continuity
      B57	45		No
      	46

   Is the inspection result normal?

   YES 

   GO TO STEP 3 

   NO 

   Repair or replace harness between BCM and door switch.

3. CHECK DOOR SWITCH
   
   

   Refer to COMPONENT INSPECTION .

   Is the inspection result normal?

   YES 

   GO TO STEP 4 

   NO 

   Replace malfunctioning door switch.

4. CHECK INTERMITTENT INCIDENT
   
   

   Refer to INTERMITTENT INCIDENT .

   Inspection End.