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.
2003 Mitsubishi Lancer EvolutionFACTORY OEM SERVICE PROCEDURE
Fan Control Module
- Remove the center under cover.
- Disconnect the fan control module connector. See Figure .
- Turn the ignition switch to the ON position. Check for battery voltage between terminals No. 1 and 3.
- Turn the ignition switch to the LOCK position, and connect the fan control module connector.
- Insert Probe (MB991222) at the back of the cooling fan motor connector. See Fig 1 .
- Connect Probe (MB991222) to the circuit tester.
- Measure voltage between the fan control module terminals. Voltage should be 1V or less.
- Turn the A/C switch to the ON position.
- Measure the voltage between the fan control module (side connector) terminals while the fan is running. The voltage should repeat values 5.6-10.8V and battery voltage.
- If the voltage does not repeatedly change as indicated, replace the fan control module.
- Install the center under cover.
CAUTION:
Stay clear of the fan when starts running.
Factory Service Tools
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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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