How To Test Cooling Fan Motor Relay

Verify the new cooling fan relay is properly seated.

How to test cooling fan motor relay.

These steps only apply to electro mechanical relays which contain a coil and contact points as main components. The most common problem on these relays is an open or shorted coil. The cooling fan relay is the relay that controls the engine s cooling fans. Turn the ignition to the on position and jump terminals 87 and 30 the relay is now jumped and the accessory should activate if so the relay has failed.

Because it can allow the engine to overheat. So a engine cooling fan failure. Or a failure of the fan relay or control circuit is bad news. The engine cooling fan only runs when needed to help cool the engine.

Checking the operation of a fan relay on your vehicle is an easy procedure. The relay will usually be activated once it is detected that the vehicle s temperature approaches excessively high temperatures. If no power is observed at either 87 or 30 the fusible link or maxi fuse has shorted. Position the relay above the recess where the original was removed from and gently press it into place.

How to test your cooling fan relay on 96 00 honda civic how to test your fuses. Testing the radiator cooling fan relay the cooling fan should be operating. 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 coolant sensor or a separate engine temperature switch is used to monitor engine temperature.