The cooling fan control module in your vehicle is located
at the front left of the engine compartment next to the radiator
.
How do I know if my fan control module is bad?
- Cooling fans running for a long time. The cooling fans under the hood of your car are designed to keep the components of the system at a lower temperature. …
- Cooling fans not running at all. …
- Weakened air flow.
Where is the cooling fan relay 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.
What is radiator fan Module?
An A/C fan control module
helps to control the blower that supplies air to the cabin of a vehicle, as well as the cooling fans
. The module helps to make sure that the cool air that is produced within the A/C system of a car is blown into the cabin.
What is a fan module?
A cooling fan module
helps to maintain a constant supply of fresh air into the cabin of a car by controlling the blower that supplies the air
. When cool air is produced in the car's A/C system, the cooling fan module blows it into the car maintaining a fresh supply of air even when the windows are all rolled up.
How do you test a cooling fan module?
The quickest way to tell whether or not the electric fan(s) are working is to
start the engine
. Then, let it reach normal operating temperature and then turn the A/C on. The cooling fan in the engine compartment, should turn on to pull air through the radiator and A/C condenser.
How do I know if my cooling fan relay is bad?
- The engine runs hot or overheats. …
- The cooling fans don't work. …
- The cooling fans keep running. …
- Warning lights. …
- Poor air conditioning performance. …
- Swapping Relays. …
- Measuring the Relay Coil's Resistance. …
- Listening for Noises.
What does a bad fan relay look like?
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 the relay shorts or fails, it will not be able to supply the power for the fans to operate and keep the engine running at normal temperatures.
Does the coolant temperature sensor control the fan?
The sensor works by
measuring the temperature
that's being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system. … As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.
What causes cooling fans not to come on?
Six things may prevent an electric cooling fan from coming on:
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.
Should radiator fan turn on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches
about 200 to 230 degrees
.
How do you diagnose cooling fan problems?
- Cooling fans do not come on. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. …
- Vehicle overheating. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. …
- Blown fuse.
Does the PCM control the radiator fan?
The
PCM controls fan operation
; it uses the signal from the ECT or engine coolant temperature sensor. This sensor senses the temperature of the engine's coolant and sends a variable voltage signal to the PCM. The PCM operates the fan motor through the engine's cooling fan relay.
What tells the cooling fan to come 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.
How do you bypass a cooling fan resistor?
The resistor just gives you the low speed fan. You can simply bypass
by unplugging the two wires connected to it and connect those together
. The result will be that when the low speed fan is called, you will get the full speed fan.
