Diagnosis Procedure
- CHECK DOOR SWITCH INPUT SIGNAL
- 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
Front LH
M181
3
Ground
7.0 - 8.0 V
Front RH
M182
Rear LH
M184
Rear RH
M183
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
Front LH
M181
3
M304
57
Yes
Front RH
M182
53
Rear LH
M184
52
Rear RH
M183
50
- Check continuity between door switch harness connector and ground.
Door switch
Ground
Continuity
Connector
Terminal
Front LH
M181
3
No
Front RH
M182
Rear LH
M184
Rear RH
M183
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and 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. Refer to Removal and Installation .
- CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .
Inspection End.