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
      Driver side	B8	3	Ground	7.0 - 8.0 V
      Passenger side	B108
      Rear LH	B18
      Rear RH	B116

      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
      Driver side	B8	3	M20	96	Yes
      Passenger side	B108			94
      Rear LH	B18			82
      Rear RH	B116			93

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

      Door switch			Ground	Continuity
      Connector		Terminal
      Driver side	B8	3		No
      Passenger side	B108
      Rear LH	B18
      Rear RH	B116

      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. Refer to "REMOVAL AND INSTALLATION ".

4. CHECK INTERMITTENT INCIDENT 

   Refer to "INTERMITTENT INCIDENT ".

   : Inspection End.