Diagnosis Procedure
- CHECK INPUT 1 - 5 CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Disconnect BCM and combination switch connectors.
- Check continuity between BCM harness connector and combination switch harness connector.
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
INPUT 1
M120
6
M33
12
Existed
INPUT 2
5
14
INPUT 3
4
5
INPUT 4
3
2
INPUT 5
2
8
Does continuity exist?
YES
GO TO 2.
NO
Repair harnesses or connectors.
- CHECK INPUT 1 - 5 CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
System
BCM
Ground
Continuity
Connector
Terminal
INPUT 1
M120
6
Not existed
INPUT 2
5
INPUT 3
4
INPUT 4
3
INPUT 5
2
Does continuity exist?
YES
Repair harnesses or connectors.
NO
GO TO 3.
- CHECK BCM INPUT SIGNAL
- Connect BCM and combination switch connectors.
- Turn ON any switch in the system that is malfunction.
- Check voltage between BCM harness connector and ground.
System
Terminals
Voltage
(Approx.)
(+)
(-)
BCM
Ground
Connector
Terminal
INPUT 1
M120
6
Refer to Reference Value .
INPUT 2
5
INPUT 3
4
INPUT 4
3
INPUT 5
2
Is the measurement value normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Replace Combination Switch.