COMBINATION SWITCH INPUT CIRCUIT
Diagnosis Procedure
- CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
- Turn the ignition switch OFF.
- Disconnect the BCM and combination switch.
- Check continuity between BCM harness connector and combination switch harness connector.
Does continuity exist?
YES >> GO TO 2
NO >> Repair or replace harness.
- 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
- CHECK BCM OUTPUT VOLTAGE
- Connect the BCM.
- Check voltage between BCM harness connector and ground.
Is the measurement normal?
YES >> GO TO 4
NO >> Replace BCM. Refer to See: Body Control Module\Service and Repair.
- CHECK BCM INPUT SIGNAL
- Connect the combination switch.
- Turn ON any switch in the system that is malfunctioning.
- Check voltage between BCM harness connector and ground.
Is the measurement normal when any of the switches is turned ON?
YES >> Replace BCM. Refer to See: Body Control Module\Service and Repair.
NO >> Replace the combination switch. Refer to See: Sensors and Switches\Sensors and Switches - Wiper and Washer Systems\Windshield Washer Switch\Service and Repair.
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