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
      	48		Rear RH	OPEN	0
      				CLOSE
      	46		Front LH	OPEN	0
      				CLOSE
      	47		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
      B57	45	B28 (Front RH)	3	Yes
      	48	B41 (Rear RH)
      	46	B21 (Front LH)
      	47	B26 (Rear LH)

   3. Check continuity between BCM connector and ground.

      BCM connector	Terminal	Ground	Continuity
      B57	45		No
      	48
      	46
      	47

      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.