How To Test Cooling Fan Motor Relay

The cooling fan relay is the relay that controls the engine s cooling fans.

How to test cooling fan motor relay.

Testing the radiator cooling fan relay the cooling fan should be operating. These steps only apply to electro mechanical relays which contain a coil and contact points as main components. Just keep in mind that many modern cars use electronic relays. How to test your cooling fan relay on 96 00 honda civic how to test your fuses.

Position the relay above the recess where the original was removed from and gently press it into place. Visually look at the base of the cooling fan relay to be sure the base of the relay is seated completely into the socket. The engine cooling fan only runs when needed to help cool the engine. The engine coolant sensor or a separate engine temperature switch is used to monitor engine temperature.

When the correct parameters are met a temperature switch or the computer will activate the relay which will allow power to the fans. Verify the new cooling fan relay is properly seated. Install new cooling fan relay. Because it can allow the engine to overheat.

The most common problem on these relays is an open or shorted coil. The relay will usually be activated once it is detected that the vehicle s temperature approaches excessively high temperatures. So a engine cooling fan failure. Checking the operation of a fan relay on your vehicle is an easy procedure.