Radiator Cooling Fan Control Module: Description and Operation
ENGINE OVER TEMPERATUREDescription
SYSTEM DESCRIPTION
Cooling Fan Control
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays in the IPDM E/R through CAN communication line.
Cooling Fan Motor
The cooling fan operates at each speed when the current flows in the cooling fan motor.