Working on a friends R and having issues with the radiator fans not kicking in at temp. Coolant will just over heat and boil. Fans work when power is linked through the relay. Relay tested ok.
Got the car hooked up to the laptop, ecu temp sensor is working ok, as soon as it reads 95 degrees it shows the cooling fans are activated but actually don't switch. As it's the ecu that controls the fans, am I right in thinking it may be the ecu at fault??