Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - SEDAN WITH INTELLIGENT KEY ".

1. CHECK DOOR SWITCH INPUT SIGNAL
   1. Turn ignition switch OFF.
   2. Check signal between BCM connector and ground with oscilloscope.
      Fig 1: Checking Door Switch Input Signal

      Courtesy of NISSAN NORTH AMERICA, INC.

      Terminals			Door condition		Voltage (V) (Approx.)
      (+)		(-)
      BCM connector	Terminal
      A: M18	58	Ground	Driver side	OPEN	0
      				CLOSE
      	32		Passenger side	OPEN	0
      				CLOSE
      B: M21	148		Rear RH	OPEN	0
      				CLOSE
      	149		Rear LH	OPEN	0
      				CLOSE

      Is the inspection result normal? 

      YES: GO TO  4

      NO: GO TO 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
      A: M18	58	C: B8 (Driver side)	2	Yes
      	32	C: B108 (Passenger side)
      B: M21	148	C: B116 (Rear RH)
      	149	C: B18 (Rear LH)

   3. Check continuity between BCM connector and ground.

      BCM connector	Terminal	Ground	Continuity
      A: M18	58		No
      	32
      B: M21	148
      	149

      Fig 2: Checking Door Switch Circuit

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 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 4

   NO: Replace malfunctioning door switch.

4. CHECK INTERMITTENT INCIDENT

   Refer to "INTERMITTENT INCIDENT ".

   Inspection End.