Table of Contents
Where is the cooling fan control?
The cooling fan control module in your vehicle is located at the front left of the engine compartment next to the radiator.
What controls the cooling fan?
On most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor. If it’s not working, the fan won’t turn on when it needs to, which means the engine might overheat.
How do I know if my cooling fan switch is bad?
The best way to tell if your cooling switch is faulty is to listen to your engine while you drive. You know how your engine is supposed to sound, and if you notice that you don’t hear the fan as often as you normally do during your afternoon commute, you might have a failing switch.
Where is the cooling fan fuse located?
The cooling fan relay is normally located in either the underhood fuse and relay center or mounted to the electric fan assembly behind the radiator.
Where is the fan relay switch located?
The fan relay is located on the driver side firewall. It is at the very end where the firewall and left front fender meet. There are two relays in that location, one is the fuel pump relay and one is the fan relay.
What tells cooling fan to turn on?
The engine temperature should trigger the fan to turn on. It will also turn the fan off once the engine has cooled to under 200 degrees. You may have heard of a part called the radiator fan switch or temperature fan switch. This is linked to a thermostat and works much like your home’s HVAC system.
What causes radiator fan to stop working?
ELECTRIC COOLING FAN PROBLEMS Defective temperature switch, coolant sensor or other sensor. Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay. A wiring problem (blown fuse, loose or corroded connector, shorts, opens, etc.)
How do I test a radiator fan switch?
Turn on the burner and slowly increase the water temperature. The ohmeter should be turned on and have a reading of high resistance. When the water reaches between 180 to 220 degrees Fahrenheit, the switch should turn on and the resistance seen by the ohmmeter should change to zero.
What fuse controls the AC fan?
Because of the volume of air that is moved by the blower fan, the motor may pull up to 20 amps or more at high speed. To protect the blower motor power circuit, a 20-, 25- or 30-amp fuse is usually located in the fuse panel under the dash.
Is there a fuse for radiator fan?
A radiator fan is necessary to keep your car cool. The fuses inside of the radiator fan must be in good working order to make sure that the engine is able to stay cool. Without these components your car overheats.