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 cooling fan module?
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.
Where is the fan control module?
The cooling fan control module in your vehicle is located
at the front left of the engine compartment next to the radiator
.
How much does it cost to replace a fan control module?
If the fan controller module needs to be replaced, the average cost is
between $250 and $400
, again depending on your vehicle module. The most expensive repair, outside of replacing a seized engine, is the radiator fan motor.
What controls the radiator 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 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.
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
.
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.
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.
When should the cooling fan come on?
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
. If the fan does not come on, something in the control circuit is defective.
How much does it cost to replace a fan relay?
So, when the cooling fan relay stops working, the coolant can get too hot, and the car can overheat. 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.
How much does a fan replacement cost?
The average cost for a replacement fan is
between $634 and $789
. Labor costs are between $102 and $130 while parts are between $532 and $659. Taxes and fees are not included in the estimate.
Can low coolant cause fan to not work?
If your coolant level is low, then it might not feel as if your car is getting cool, even with the radiator fan turned on and working. If you don't replace your coolant level when it's low, then this can cause the engine
to become seized
.
Is the radiator fan the same as the cooling fan?
The
cooling
fans are mounted on the radiator and work to pull air through the radiator fans to keep the engine cool, especially during idle and low speeds, where air flow through the radiator is significantly less than at road speeds.
What is the difference between condenser fan and radiator fan?
On some vehicles, for example, only the condenser fan operates with the air conditioner, while only the radiator fan operates
based on engine temperature
. On other vehicles, both fans can be activated by either air conditioning or engine temperature.
Can a bad thermostat cause radiator fan not to work?
Broken Thermostat
Thermostats are known to go bad and cause all sorts of cooling issues. … If this thermostat doesn't open when the engine reaches the working temperature, the coolant will stay inside the engine block and the engine
will start to overheat
. This will result in the radiator fan not working.
