Windshield Wiper/Washer Switch Circuit Malfunction
- Ignition OFF, disconnect the harness connector at the Windshield Wiper/Washer switch.
- Ignition ON, test for 12 volts between accessory voltage circuit terminal D and ground.
- If not the specified value, test the accessory voltage circuit terminal D for a short to ground. If the circuit tests normal, replace the BCM.
- Ignition ON, verify the scan tool Windshield Washer Switch parameter is Inactive.
- If not the specified value, test the control circuit terminal B for a short to B+. If the circuit tests normal, replace the BCM.
- Install a 3A fused jumper wire between the control circuit terminal B and B+. Verify the scan tool Windshield Washer Switch parameter is Active.
- If not the specified value, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
- If all circuits test normal, test or replace the Windshield Wiper/Washer switch.