Diagnosis Procedure

COMBINATION SWITCH INPUT CIRCUIT


Diagnosis Procedure

1. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN





1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch.
3. Check continuity between BCM harness connector and combination switch harness connector.






Does continuity exist?
YES - GO TO 2
NO - Repair or replace harness.
2. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT





Check for continuity between BCM harness connector and ground.





Does continuity exist?
YES - Repair or replace harness.
NO - GO TO 3
3. CHECK BCM OUTPUT VOLTAGE





1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector and ground.





Is the measurement value normal?
YES - GO TO 4
NO - Replace BCM. Refer to Service and Repair.
4. CHECK COMBINATION SWITCH
Check combination switch. Refer to Description.
Is the check result normal?
YES - Replace BCM. Refer to Service and Repair.
NO - Replace the combination switch (applicable parts). Refer to Service and Repair.