Radiator Cooling Fan Motor: Description and Operation

WITHOUT A/C MODELS
The ON-OFF control of the radiator fan is governed by the Engine Control Module (ECM) which receives signals sent from the engine coolant temperature sensor.





WITH A/C MODELS
On models which are equipped with an air conditioning system, the ECM receives signals sent from the engine coolant temperature sensor, vehicle speed sensor 2 and A/C switch. These signals simultaneously turn ON or OFF the radiator main fan and radiator sub fan.