Operating Condition

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Radiator fan operates depending on the radiator fan speed related to engine coolant temperature or the radiator fan speed related to A/C compressor load, whichever is higher as a load condition.

Radiator fan speed related to engine coolant temperature

Fig 1: Radiator Fan Speed Versus Engine Coolant Temperature Graph (Radiator Fan Speed Related To Engine Coolant Temperature)
Courtesy of SUBARU OF AMERICA, INC.
Radiator fan speed related to A/C compressor load

Fig 2: Radiator Fan Speed Versus Engine Coolant Temperature Graph (Radiator Fan Speed Related To A/C Compressor Load)
Courtesy of SUBARU OF AMERICA, INC.