Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - COUPE ".

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
   M18	58	Ground	Driver side	OPEN	0
   				CLOSE
   	32		Passenger side	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	B: B68 (Driver side)	2	Yes
      	32	B: B109 (Passenger side)

   3. Check continuity between BCM connector and ground.

      BCM connector	Terminal	Ground	Continuity
      A: M18	58		No
      	32

      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.