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.

When the correct parameters are met a temperature switch or. Most cooling fans use electric motors that have a moderate to high current draw and as a result are commonly controlled using relays. And play a key role in keeping the car at safe temperatures during idle and low speeds. 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.

The headlamp module must be removed to access the relay. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. The cooling fan relay is the relay that controls the engine s cooling fans. Test the new unit by switching on the car to see how it.

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. 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. So cooling fan motors are an important component to any engine cooling fan assembly. 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. Check the relay for the fans. When you re driving air flows through the car radiator to keep your engine a normal temperature. To replace the module the radiator fan relay is located below the left front headlamp module.

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. The fan is temperature controlled to make sure that the engine gets enough cool air to avoid overheating.