My fan stopped working too today. I checked it with the software and it was not woking but when I checked it by connecting directly on the fan it was woking. I checked the thermistor and the reading was 1,33 omh. PeterbB checked one, it is 2.96 K ohms (2,900 ohms) at ambient, which is a freezing cold 17C
Do other poeple test the thermistor to have other datas. I think that when we test the fan with the software the engine don't need to work so the coolant temperature is not what drives the fan to operate at that moment but it is me clicking on the button on the computer.
And how can we test if the relay is working. Do somebody know where it is possible to buy thoses thermistor and relay.