Good morning!!!

I have a Ford Fiesta with an engine cooling fan problem. It won't start!

Mechanically all OK until 100 degrees are reached. Relay functioning. But there seems to be no ground to the relay circuit.

Flex tester detects refrigenate liquid temperature parameter well.

What could it be? Is there a dedicated bulb or is it the engine control unit that is not giving ground?

Thank you, Cristian Nuova OMER snc

Ford Fiesta 1388 71 kw b/gpl year 2010