Subaru LEGACY 2002 Quick Reference Index page 524

HVAC System (Heater, Ventilator and A/C)
3. AIR FLOW CONTROL
1) LHD VEHICLE:
! Normal air flow control:
When the air conditioning system is in the automatic control mode, the air flow is determined
based on the TAO calculated by the ECM. The blower fan speed is controlled accordingly.
In the automatic control mode, the minimum air flow is different between DEF mode and the other
modes. For the minimum air flow in BI-LEVEL, HEAT and DEF/HEAT modes, a voltage of 5.5V is
applied to the blower motor, while for the DEF mode a voltage of 9.0V is applied.
The minimum air flow is corrected by the sunbeam intensity if the VENT or BI-LEVEL mode is se-
lected.
:When exposed
to sunbeam
:When not exposed
to sunbeam
(1) If the vehicle is not exposed to sunbeam, a voltage of approx. 5V is applied to the blower motor when the cabin temperature
is 25°C and the ambient temperature is 40°C.
(2) The system (battery) voltage is applied to the blower motor when the cabin temperature is 40°C and the ambient temper-
ature is 40°C.
AUTOMATIC AIR CONDITIONING
AC-52
Cabin temperature (˚C)
B4H1326B