A C Condenser Fan Relay And Radiator Cooling Fan Relay Testing And Replacement Youtube How to test and replace an a c condenser fan relay and radiator or cooling fan relay.how can you tell if a fan relay is bad? how do i test my ac condenser fa. Key points. recognize symptoms: engine overheating, poor a c, continuous fan operation, battery drain, risk of a c compressor damage. inspect for damage: check for corrosion, burnt marks, loose pins, cracked sockets in the relay. test functionality: use a multimeter, check for continuity resistance, listen for a click, inspect physically.
How To Test A Cooling Fan Relay Problems in the cooling fan relay circuit. the typical electric cooling fan circuit includes, a temperature sensor, a relay, a control module and the fan motor. the relay is the component that fails most often. so, be sure to test the relay, as well as its power supply and ground connections. a good relay coil will typically read 40 to 80 ohms. The cooling fan relay has an electrical connector that will need to be disconnected and switched over to the replacement cooling fan relay. most commonly used connectors are a push type connector. disconnect connector and remove cooling fan relay. step 3: compare the replacement cooling fan relay to the one being removed. visually inspect the. Usually a faulty cooling fan relay will produce a few symptoms that can alert the driver that service may be required. 1. engine running hot. one of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. if you notice that your engine is running at higher temperatures than normal. Unplug the electrical connectors to the radiator fans. then turn your a c to the max position and start the engine. use a multimeter to check for power at the unplugged fan connectors. if you don’t see 12 volts at the connectors, the fan isn’t getting power from the relay. the fan relay is usually located near the bottom of the engine.
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