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Home >> Subaru >> 1992 >> Legacy Sport >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Cooling System (Mechanical) >> Electric Cooling Fans >> Description & Operation

Description & Operation

The engine cooling system consists of a cross-flow radiator which features high heat-dissipation performance, an electric cooling fan, a water pump, a thermostat, and a coolant temperature sensor (thermometer).

The reserve tank is designed to eliminate the need for replenishing coolant.

On models without an air conditioner, the ECM sends an ON or OFF switch signal to the radiator fan in response to signals from the engine coolant temperature sensor (thermometer). On models with an air conditioner, the ECM sends ON or OFF, and Lo (low) or Hi (high) switch signals to the radiator main fan and sub fan in response to signals from the engine coolant temperature sensor (thermometer), vehicle speed sensor 2, and A/C switch.

Fig 1: Cooling Fan System Diagram
G00149875Courtesy of SUBARU OF AMERICA, INC.