Subaru LEGACY 2002 Quick Reference Index page 521

J: CONTROL SYSTEM
1. CALCULATION OF REQUIRED BLOW-OUT AIR TEMPERATURE (TAO)
1) REQUIRED BLOW-OUT AIR TEMPERATURE (TAO):
Upon reception of temperature set switch signals in addition to cabin temperature, ambient tem-
perature and sunload sensor signals, the ECM calculates the TAO first and then, based on the cal-
culated temperature, it determines the outlets from which the air is to be blown out.
Cabin temperature (Cabin temp. sensor)
Ambient temperature (Ambient temp. sensor)
Intensity of sunload (Sunload sensor)
Inlet air temperature (Intake sensor)
(Sensor transmitted data)
Set temperature (18.0 to 32.0˚C)
2) CALCULATION OF REQUIRED TAO:
When the set temperature is 18.0°C, the TAO is fixed at the MAX COOL.
!
! When the set temperature is 32.0°C, the TAO is fixed at the MAX HOT.
! When the set temperature is 18.5°C to 31.5°C, an optimum TAO is calculated based on the set
temperature, as well as the cabin temperature, ambient temperature and sunload data at that time.
AUTOMATIC AIR CONDITIONING
(Driver input data)
HVAC System (Heater, Ventilator and A/C)
AC-49
Determination of air
temperature and outlets
B4H1323B