Cooling Fan Relay What Does It Do Failure Symptoms Basic Testing

Cooling Fan Relay What Does It Do Failure Symptoms Basic Testing An engine that runs hot or overheats. this is one of the first symptoms commonly associated with, a bad or failing cooling fan relay. cooling fans, that will do not come on. another common symptom is when, the fans don’t come on at all. so, if the cooling fan relay fails, it will be unable to supply power to the fans. 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, that may be a sign that the relay is not functioning properly. if the relay shorts or fails, it will not be able to.

Cooling Fan Relay What Does It Do Failure Symptoms Basic Testing 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. First, turn off power to the system for safety. locate the relay in your hvac unit; it’s usually found near the blower motor. remove the relay from its socket and set your multimeter to continuity mode. place one probe on the coil terminal and another on the common terminal. The cooling fan relay is an electromagnetic switch that controls the power supply to the engine’s cooling fans. without it, the cooling fan won’t work. without the radiator fan, your engine can run hot and be at risk of overheating. a faulty relay can be caused by a bad relay control module, ants in the relay, or an electrical short. Some of the common symptoms of a bad cooling fan or lay are: 1. the engine overheats. 2. the cooling fan does not function. 3. the cooling fan does not turn off. your vehicle is equipped with many interacting components to help cool down the engine when its temperature exceeds the maximum threshold. within your cooling system, there are many.