Genuine Volvo V40 Cooling Fan Assembly

Volvo V40 Cooling Fan Assembly Parts and Q&A

• Fan Blade, Driver Side
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  Q: How is the Cooling Fan Assembly controlled and what steps should be taken if it is not functioning properly on Volvo V40?

  A:

  The cooling fan is regulated by the engine management ECU via the cooling fan relay, based on input from the coolant temperature sensor, and possibly the air conditioning system pressure switch. If a fan is not operating when the engine is running fine, the problem may be with the cooling fan relay or motor. A bad ECU or temperature sensor will usually cause a rough running engine and may cause the engine management light to illuminate. To check the motor, unplug the wiring connector and use a 12 volt supply directly. For the cooling fan relay replacement with a known working relay is recommended. For non-turbo models, disconnect the battery negative terminal and then disconnect the wiring connector from the fan motor and unclip the wiring/hoses from the fan shroud. If necessary, jack up the front of the car to get access, remove the engine/transmission undershield and unbolt the fan shroud off of the radiator, then maneuvering the fan assembly out. For models with air conditioning, unbolt the fan assembly from the radiator, remove the radiator and then pull out the cooling fan. Disconnecting wiring connector and unbolting fan shroud from the radiator as the auxiliary cooling fan requires. For turbo models support the engine/transmission with a hoist, remove headlight access covers, disconnect hoses and wiring and then remove the fan assembly ensuring correct reassembly and torque upon refitting.