Subaru LEGACY 2002 Quick Reference Index page 254

Cooling
B: FUNCTION
The operation of the radiator fan is controlled by the ECM, depending on the signals from the en-
gine coolant temperature sensor, vehicle speed sensor and A/C switch as shown below.
Vehicle speed
Lower than 19 km/h
(12 MPH)
Between 20 and
69 km/h
(12 and 43 MPH)
Between 70 and
105 km/h
(43 and 65 MPH)
Higher than 106 km/h
(66 MPH)
RADIATOR FAN
A/C
Lower than 95°C
A/C pres-
com- sure
pressor switch
Operation of radiator fans Operation of radiator fans Operation of radiator fans
level
Main fan
Off Off
On Low Low-speed
High Mid-speed
Off Off
On Low High-speed High-speed High-speed High-speed High-speed High-speed
High High-speed High-speed High-speed High-speed High-speed High-speed
Off Off
On Low Mid-speed
High High-speed High-speed High-speed High-speed High-speed High-speed
Off Off
On Low Off
High Mid-speed
Engine coolant temperature
Between 95 and 99°C
(203°F) (203 and 210°F)
Subfan Main fan
Off Low-speed
Low-speed Mid-speed
Mid-speed High-speed High-speed High-speed High-speed
Off Mid-speed
Off Mid-speed
Mid-speed High-speed High-speed High-speed High-speed
Off Mid-speed
Off Mid-speed
Mid-speed Mid-speed
CO-8
Higher than 100°C
(212°F)
Subfan Main fan
Low-speed Mid-speed
Mid-speed High-speed High-speed
Mid-speed High-speed High-speed
Mid-speed High-speed High-speed
Mid-speed High-speed High-speed
Mid-speed High-speed High-speed
Mid-speed High-speed High-speed
Subfan
Mid-speed