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Radiator Cooling Fan Control Module: Description and Operation

ENGINE OVER TEMPERATURE

Description

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.