Impreza 2.5 RS Sedan AWD F4-2.5L SOHC (2002)
TURBO MODEL
FUNCTION
MODELS WITHOUT A/C
The ON-OFF control of the radiator fan is performed by the ECM which receives signals from the engine coolant temperature and vehicle speed
sensors.
MODELS WITH A/C
On models equipped with an air conditioning system, the ECM receives signals from the engine coolant temperature sensor, vehicle speed sensor
and A/C switch. According to these signals, the ECM turns ON or OFF the radiator main fan and sub fan simultaneously (and also selects the Hi or
Low fan speed in turbo model).