Combination Switch Input Circuit

COMBINATION SWITCH INPUT CIRCUIT


Diagnosis Procedure

1.CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect the BCM and combination switch connectors.
3. Check continuity between BCM harness connector and combination switch harness connector.





Does continuity exist?
YES - GO TO 2.
NO - Repair the harnesses or connectors.
2.CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - GO TO 3.
3.CHECK BCM OUTPUT VOLTAGE
1. Connect the BCM connector.
2. Check voltage between BCM harness connector and ground.





Is the measurement value normal?
YES - GO TO 4.
NO - Replace BCM. Refer to Exploded View.
4.CHECK BCM INPUT SIGNAL
1. Connect the combination switch connector.
2. Turn ON any switch in the system that is malfunctioning.
3. Check voltage between BCM harness connector and ground.





Is the measurement value normal when any of the switches is turned ON?
YES - Replace BCM. Refer to Exploded View
NO - Replace the combination switch.