How To Test Engine Cooling Fan Module

Most likely failure and most difficult if the radiator fan control module has failed you will need to replace it with a new one there is no way to repair it.

How to test engine cooling fan module.

If you suspect that your cooling fan motors may be having an issue. This can also happen when the cooling fan module is weak and therefore the fans work at a slower pace and are not able to regulate the heat. The cooling fan relay is the relay that controls the engine s cooling fans. When the correct parameters are met a temperature switch or.

And play a key role in keeping the car at safe temperatures during idle and low speeds. Test the new unit by switching on the car to see how it. Most cooling fans use electric motors that have a moderate to high current draw and as a result are commonly controlled using relays. Learn how to quickly verify the circuit and control system with this case study on a 2009 lincoln.

If the fan comes on when the ac is running at max but doesn t run when the engine is hot check the temperature sensor or switch that sends the signal to the computer or module to operate the fan. On modern vehicles a bad sensor usually triggers the check engine light. To replace the module the radiator fan relay is located below the left front headlamp module. The headlamp module must be removed to access the relay.

Check the relay for the fans. Start doing some testing to see if you can fix it yourself. Failure of the cooling fan module to regulate the temperature inside the hood of your car can lead to the engine overheating. But if you stop for example in a traffic jam your engine has to use an electric cooling fan to force air through the radiator.

Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. When you re driving air flows through the car radiator to keep your engine a normal temperature.