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Troubleshoot the Fan Failure of Truck Radiator

Fault 1: The truck radiator fan does not rotate during driving.


The temperature of engine water has not reached the starting conditions of the truck radiator fan, and the temperature is low.


You can use the engine diagnostic instrument to test the function of the truck radiator fan. If the radiator fan can rotate normally, the circuit is normal. Then check the thermostat.


Fault 2: The truck radiator fan does not rotate, and the air conditioner does not cool.


First check the temperature control switch of the electronic fan. If the switch has no problem, check the failure of the electronic fan itself. Only when the electronic fan runs normally can the air-conditioning evaporator dissipate heat and cool the air-conditioning system.


Fault 3: The truck radiator fan does not rotate at a high level.


The high water temperature in the engine is mainly caused by the electronic fan not starting. The water temperature will be normal after troubleshooting the electronic fan. If the electronic fan does not work, first check whether the connector is poorly connected, check the power supply and grounding of the electronic fan, check whether the fan is stuck, check whether the fan motor is burned, etc. These factors will cause the electronic fan to fail to start. It is recommended that the vehicle should be sent to 4S shop in time for repair and continue to drive on the road after troubleshooting.


Fault 4: The truck radiator fan starts frequently after the car is off.


The cooling system of ordinary cars also stops working after the engine is turned off, which often causes the temperature to rise after the engine is turned off and causing damage. Therefore, the current high-end cars are equipped with automatic cooling function. The power of the truck radiator is directly connected to the battery. The temperature of the engine is still high after the car is off, so the truck radiator fan still works for a period of time, and then stops after the temperature decreases so as to avoid spontaneous combustion of the car caused by the high temperature.

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