Radiator Cooling Fan: Description and Operation

DESCRIPTION

Part 1:

Part 2:

Each radiator fan is made of plastic. It is driven by an electric motor which is retained on a shroud.

FUNCTION
MODELS WITHOUT A/C





The ON-OFF control and Hi-Low control of the radiator fan is performed by the ECM which receives signals from the engine coolant temperature sensor.

MODELS WITH A/C





On models equipped with an air conditioning system, the ECM or ECM/TCM receives signals from the engine coolant temperature sensor, vehicle speed sensor and A/C switch, and based on these signals, the ECM controls the HIGH-LOW of the radiator main fan and sub fan.