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.
Control Module Cooling Fan
A Control Module Cooling Fan is located inside of the front lower section of the Control Module Box (2). See Figure . The Cooling Fan is wired to the BCM and is switched on when the ignition is On. The Cooling Fan is attached to a duct which pulls cabin temperature air from the passenger compartment and circulates it into the Control Module Box in order to decrease the heat that may be generated by the Powertrain Control Module (PCM), the BCM, and the Relay Control Module.
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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.
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