Most modern cooling fans are controlled by the onboard computer in the vehicle. There is a temperature sensor in the system that monitors the temperature of the engine and sends the information to the computer. The onboard computer, then, resolves whether the fan or fans should be turned on. This computer also decides whether the fan relay should also be actuated in case there’s a need for additional air flow through the radiator. If the fuse is good, the next step is to connect an OBDII scanner to the vehicle and see what codes you get. It may simply be a defective fan relay.
1
0
