How To Test A Fuse Relay. If youre using a digital multimeter set to measure resistance touch the probes together to get an initial reading. When the power is not applied the normally open contact does not work and the normally closed contact conducts.
If the panel is properly indexed the circuit that has lost power can be identified by the circuit label. Bench Testing A Ford Relay A Step-by-Step Guide. Test the Relay contacts using Multimeter.
How To Test The Thermal Fuse.
Before testing the relay ensure the fuse is working appropriately and if it is not you should consider replacing it before checking the relay. Often its not the pump itself that fails to function but the power that supplies it. The only tool required to check a relay is a multimeter. Remove the thermal fuse to test it.
