DTC Diagnosis Procedure

Regarding Wiring Diagram information, refer to Wiring Diagram .

1. CHECK DOOR SWITCH INPUT SIGNAL 
   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
      Front door switch LH	B8	3	Ground	Courtesy of NISSAN NORTH AMERICA, INC. 7.0 - 8.0 V
      Front door switch RH	B16	3
      Rear door switch LH	B6	3
      Rear door switch RH	B17	3

   Is the inspection result normal?

   YES

   GO TO 3 .

   NO

   GO TO 2 .

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

      Door switch			BCM		Continuity
      Connector		Terminal	Connector	Terminal
      Front door switch LH	B8	3	M100	47	Yes
      Front door switch RH	B16			45
      Rear door switch LH	B6			48
      Rear door switch RH	B17			46

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

      Door switch			Ground	Continuity
      Connector		Terminal
      Front door switch LH	B8	3		No
      Front door switch RH	B16
      Rear door switch LH	B6
      Rear door switch RH	B17

   Is the inspection result normal?

   YES

   Replace BCM. Refer to Removal and Installation .

   NO

   Repair or replace harness.

3. CHECK DOOR SWITCH 

   Refer to Component Inspection .

   Is the inspection result normal?

   YES

   GO TO 4 .

   NO

   Replace malfunctioning door switch.

4. CHECK INTERMITTENT INCIDENT 

   Refer to Intermittent Incident .

   Inspection End.