•  The climate control unit calculates the air mix actuator opening angle characteristic for the given ambient temperature based on the set temperature and sunlight intensity. The air mix actuator opening angle characteristic decreases as the sunlight intensity increases.

•  The opening angle characteristic of the air mix actuator and the current ambient temperature are compared and the basic opening angle for the air mix actuator is determined according to the A/C compressor control status. The opening angle must maintain the target temperature (calculated control value T1) in the cabin against changes in external factors such as sunlight intensity and ambient temperature.

•  If there is a difference between the target temperature (calculated control value T1) and current cabin temperature, the basic opening angle of the air mix actuator is corrected so that the cabin temperature rapidly reaches the target temperature.

•  Calculated control value T1 is the target temperature in the cabin as set by the climate control unit based on differences among the set temperature, temperatures input from the sensors, and sunlight intensity. Calculated control value T1 is calculated according to the changes in the set temperature and temperatures input from the sensors.

•  When the temperature is set to 29.0/84 (MAX HOT) (European (L.H.D. U.K.) specs.), 32.0/90 (MAX HOT) (Australian, General (L.H.D. R.H.D.) specs.), the air mix actuator opening angle is fixed at fully open and when set to 15.0/60 (MAX COLD) (European (L.H.D. U.K.) specs.), 18.0/64 (MAX COLD) (Australian, General (L.H.D. R.H.D.) specs.), it is fixed at fully closed.