Examination
Disconnect the coolant temperature sensor connector and remove the relay 1, 2, 3 of the radiator fan motors, start the engine.
Connect relay 1.
Fans should rotate at low speed.
Connect relays 2 and 3. Fans should rotate at high speed.
In this case, the operation of the engine occurs in emergency mode.
Removing
See ch. Lubrication and cooling system.