Diagnosis Procedure
- CHECK INPUT 1 - 5 CIRCUIT FOR OPEN
- Turn the 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 M65 6 M27 6 Existed INPUT 2 5 7 INPUT 3 4 10 INPUT 4 3 9 INPUT 5 2 8
Does continuity exist?
YES
GO TO STEP 2.
NO
Repair the harnesses or connectors.
- CHECK INPUT 1 - 5 CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and the ground.
System BCM Ground Continuity Connector Terminal INPUT 1 M65 6 Not existed INPUT 2 5 INPUT 3 4 INPUT 4 3 INPUT 5 2 Does continuity exist?
YES
Repair the harnesses or connectors.
NO
GO TO STEP 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 the ground.
System Terminals Voltage
(Approx.)(+) (-) BCM Ground Connector Terminal INPUT 1 M65 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 EXPLODED VIEW .
No
GO TO STEP 4.
- CHECK COMBINATION SWITCH
Check combination switch. Refer to DESCRIPTION .
Is the check result normal?
YES
Replace BCM. Refer to EXPLODED VIEW .
NO
Replace the combination switch (applicable parts).