Diagnosis Procedure
- CHECK OUTPUT 1 - 5 CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Disconnect BCM and combination switch connectors.
- Check continuity between BCM connector and combination switch connector.
Combination switch signal
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
OUTPUT 1
M21
6
M28
12
Yes
OUTPUT 2
5
14
OUTPUT 3
4
5
OUTPUT 4
3
2
OUTPUT 5
2
8
Is the inspection result normal?
YES
GO TO 2.
NO
Repair harness or connectors.
- CHECK OUTPUT 1 - 5 CIRCUIT FOR SHORT
Check for continuity between BCM connector and ground.
Combination switch
signal
BCM
Ground
Continuity
Connector
Terminal
OUTPUT 1
M21
6
No
OUTPUT 2
5
OUTPUT 3
4
OUTPUT 4
3
OUTPUT 5
2
Is the inspection result normal?
YES
GO TO 3.
NO
Repair harness or connectors.
- CHECK BCM INPUT SIGNAL
- Connect BCM and combination switch connectors.
- Turn ON any switch in the system that is malfunctioning.
- Check voltage between BCM connector and ground.
BCM signal
Terminals
Voltage
(+)
(-)
BCM
Ground
Connector
Terminal
INPUT 1
M21
6
Refer to Reference Value .
INPUT 2
5
INPUT 3
4
INPUT 4
3
INPUT 5
2
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Replace combination switch.