How To Test Engine Cooling Fan Module

On modern vehicles a bad sensor usually triggers the check engine light.

How to test engine cooling fan module.

Check the relay for the fans. So cooling fan motors are an important component to any engine cooling fan assembly. Most cooling fans use electric motors that have a moderate to high current draw and as a result are commonly controlled using relays. If you suspect that your cooling fan motors may be having an issue.

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. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. 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. When the correct parameters are met a temperature switch or.

Start doing some testing to see if you can fix it yourself. Learn how to quickly verify the circuit and control system with this case study on a 2009 lincoln. 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 fan is temperature controlled to make sure that the engine gets enough cool air to avoid overheating.

And play a key role in keeping the car at safe temperatures during idle and low speeds. How to test ford and lincoln 3 wire electric cooling fans. The headlamp module must be removed to access the relay. Failure of the cooling fan module to regulate the temperature inside the hood of your car can lead to the engine overheating.

When you re driving air flows through the car radiator to keep your engine a normal temperature. The cooling fan relay is the relay that controls the engine s cooling fans.