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.
With the Scan Tool, clear all CCN DTC's.
Turn the Wipers ON then OFF.
With the Scan Tool, read the Wiper DTC's.
Does the Scan Tool read: B230A-REAR WIPER SWITCH INPUT CIRCUIT LOW (SCM)?
Yes
- Go to 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 BODY VERIFICATION TEST .
- WIPER MULTIFUNCTION SWITCH
Turn the ignition off.
Using the correct service procedure, remove the Wiper Multi-Function Switch.
Measure the internal resistance of the Multifunction Switch between cavities 4 and 5. Move the switch into each position while measuring.
OFF = 1045 ohms
INTERMITTENT = 382 ohms
WIPE = 174 ohms
WASH = 0 ohms
Is the resistance in each position correct?
Yes
- Replace the Steering Control Module in accordance with the service information.
- Perform BODY VERIFICATION TEST .
No
- Replace the Multifunction Switch in accordance with the service information.
- Perform BODY VERIFICATION TEST .
NO RELATED
Use the Manual With the Right Hardware
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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.