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.
The cooling fan module is a complete electrical subsystem. It is able to set the right speed for the fan. Due to the increasing amount of power consu- mers (power steering, air-conditioning etc.) it is necessary to protect the engine from overheating.
Likewise, 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.
Then, where is the fan control module?
Location. The Coolant Fan Control Module is located in the left front of the engine compartment next to the radiator.
What does the fan relay do?
The function of the cooling fan relay is to convert a low voltage signal from either the electronic control module (ECM) or a thermostatically controlled sensor. The cooling fan relay takes the low voltage signal and internally switches the relay “on” to allow battery voltage to be supplied to the radiator cooling fan.
How do I know if my fan control module is bad?
Symptoms of a Bad or Failing AC Fan Control Module 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. If the cooling fans are not coming on at all, then this may also be a sign that the fan control module is damaged. Weakened air flow.
How do you test a fan control module?
How to Test the Fan Control Module Start and idle the vehicle. Check for 12 volts at the T14 connector pin No. Check for 12 volts at pin T14/9. Check for 12 volts at pin T14/4. Check for a good ground at pin T14/6.
How do I test my electric radiator fan?
How to Check a Radiator Fan Determine whether your radiator fan is manual or electric. To check an electric radiator fan, start the car and let it get up to the temperature where the fan normally kicks on. Use the volt meter to test if there is power to the wires. Normal voltage for a radiator fan is around 12 volts.
How does a blower control module work?
AC Blower Control Module Malfunction This is the digital type that function like the HVAC control panel in your house. You set the temperature to 70 degrees and the climate control system automatically adjusts the temperature doors and blower speed to accommodate your settings.
Where is the cooling fan relay?
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.
How much is a fan relay?
To get your cooling fan relay replaced, you will pay, on average, $80-$160, depending on the type of car you have and the mechanic’s fees. The labor should cost around $70, while parts should run you $10-$50.
Should radiator fan run when AC is on?
Both radiator fans should always run when the AC compressor is engaged. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F.
Can a bad thermostat cause radiator fan not to work?
If the thermostat is stuck open (allowing coolant to flow) it can cause the engine to run cooler than normal so obviously the fan wouldn’t come on..but not like the engine/coolant can be running too hot and the thermostat somehow effects the sensor reading or operation of the fan.
Does the coolant temp 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.