Subaru LEGACY 2002 Quick Reference Index page 526

AUTOMATIC AIR CONDITIONING
HVAC System (Heater, Ventilator and A/C)
2) RHD VEHICLE:
In the automatic control mode, the air flow is determined based on the TAO calculated by the ECM.
The blower speed is controlled accordingly. When the HEAT, BI-LEVEL (automatic control) or DEF
(defroster) is manually selected, the blower speed is controlled in different ways. When the HEAT
is selected and the water temperature is still low, the air flow is fixed to the Lo level. When the water
temperature rises to or over 49°C, the air flow is determined based on the water temperature (TW)
or the TAO, whichever lower. In the DEF mode, the air flow is fixed to the Me.1 level until a certain
TAO value is reached, and above that TAO value, the air flow is automatically controlled for an air
flow higher than the Me.1 level. When the blower is started, the air flow is varied for 7.5 seconds
regardless of the TAO value, and then it is controlled according to the TAO value.
! Air flow control based on TAO:
The blower speed is controlled to any level between the Lo and EX-Hi levels depending on the
TAO value.
B4H1517A
AC-54