Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Test
- INTERMITTENT CONDITION
- Turn the ignition on.
- Using the scan tool, clear all FCM DTCs.
- Turn the Washers on.
- Using the scan tool, read the Wiper/Washers DTCs.
Does the scan tool read: B231F-FRONT/REAR WASHER MOTOR CONTROL CIRCUIT LOW?
Yes
- Go to step 2
No
- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- WASHER PUMP MOTOR
- Turn the ignition off.
- Disconnect the Washer Pump Motor connector.
- Turn the ignition on.
- Using the scan tool, read the DTCs.
Does the scan tool read:B231F-FRONT/REAR WASHER MOTOR CONTROL CIRCUIT LOW?
Yes
- Go to step 3
No
- Replace the Washer Pump Motor in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- (W10)/(W20) WASHER PUMP MOTOR CONTROL CIRCUITS SHORT TOGETHER
- Turn the ignition off.
- Disconnect the Washer Pump Motor harness connector.
- Disconnect the IPM C1 harness connector.
- Measure the resistance between the (W10) and (W20) Washer Pump Motor Control circuits.
Is the resistance below 5.0 Ohms?
Yes
- Repair the (W10) and (W20) Washer Pump Motor Control circuits for a short together.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Go to step 4
- (W10) WASHER PUMP MOTOR CONTROL CIRCUIT SHORT TO GROUND
- Measure the resistance between ground and the (W10) Washer Pump Motor Control circuit.
Is the resistance below 5.0 Ohms?
Yes
- Repair the (W10) Washer Pump Motor Control circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Go to step 5
- Measure the resistance between ground and the (W10) Washer Pump Motor Control circuit.
- (W20) WASHER PUMP MOTOR CONTROL CIRCUIT SHORT TO GROUND
- Measure the resistance between ground and the (W20) Washer Pump Motor Control circuit.
Is the resistance below 5.0 Ohms?
Yes
- Repair the (W20) Washer Pump Motor Control circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Replace the Front Control Module in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- Measure the resistance between ground and the (W20) Washer Pump Motor Control circuit.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.