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.
2. Radiator Fan Control Circuit Open
Turn the ignition off.
Disconnect the Radiator Fan Control Module harness connector.
Measure the resistance of the Radiator Fan Control circuit from the PCM C4 harness connector to the Radiator Fan Control Module harness connector.
Is the resistance below 5.0 ohms?
- Yes >> Go To 3
- No >> Repair the Radiator Fan Control circuit for an open.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.