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What Happens When the Car Fan Control Module Fails?

1 Answers

LaAlexandra

07/30/25 5:24am

Turn on the air conditioning to see if it spins. If it doesn't, the fan motor is faulty; if it does, the temperature controller is faulty. Below are the specific control principles of car fans: 1. Thermoswitch "Sole" Control: The high and low speeds of the car fan are "solely" controlled by the thermoswitch. This switch has two gears and is installed on the radiator to detect water temperature. 2. Radiator Control: The car fan is installed behind the radiator and pulls air from the front of the radiator when turned on. However, some models have fans installed in front of the radiator, blowing air toward the radiator when turned on. 3. Engine-Driven: The electric fan does not rotate when the engine is cold but starts spinning as the temperature rises, driven by an electric motor. 4. Fan Control Device: To reduce engine power loss and save fuel, mechanical fans often use a fan control device to engage or disengage the cooling fan from the drive pulley.

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