Diagnosis Procedure
- CHECK DOOR SWITCH INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect malfunctioning door switch connector.
- Check signal between malfunctioning door switch harness connector and ground using oscilloscope.
(+)
(-)
Signal
(Reference value)
Door switch
Connector
Terminal
Driver side
B93
3
Ground
7.0 - 8.0 V
Passenger side
B94
Rear LH
B92
Rear RH
B91
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- CHECK DOOR SWITCH CIRCUIT
- Disconnect BCM connector.
- Check continuity between door switch harness connector and BCM harness connector.
Door switch
BCM
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B93
3
M69
47
Existed
Passenger side
B94
45
Rear LH
B92
48
Rear RH
B91
46
- Check continuity between door switch harness connector and ground.
Door switch
Ground
Continuity
Connector
Terminal
Driver side
B93
3
Not existed
Passenger side
B94
Rear LH
B92
Rear RH
B91
Is the inspection result normal?
YES
Replace BCM. Refer to BCM : Removal & Installation .
NO
Repair or replace harness.
- CHECK DOOR SWITCH
Refer to Component Inspection .
Is the inspection result normal?
YES
GO TO 4.
NO
Replace malfunctioning door switch.
- CHECK INTERMITTENT INCIDENT
Refer to Inspection .
INSPECTION END