Functions and Features

Automatic interior temperature control
This function enables to maintain the interior temperature at the level specified from the temperature control switch despite of changes in factors such as vehicle speeds, outside air temperature and number of passengers.

Maximum cooling and heating function
You can select FC (Full cool, namely maximum cooling temperature) or FH (Full heat, maximum heating temperature) from the temperature control lever.

Automatic air flow control
Air flow is automatically and consecutively fine tuned according to the specified interior temperature and changes in aperture of the heater unit mix door.

Mode (blow port) control
This function automatically selects either one of the VENT, BI-LEVEL, FOOT or DEF mode for the blow port according to changes of temperature on the blow port. Using the mode switch allows you to select a desired blow port manually.

Intake (switching between the fresh air intake and circulation of interior air) control
The intake (switching between fresh air intake and circulation of interior air) mode automatically selects either FRESH (fresh air intake), MIX or RECIRC (interior air circulation) according to changes of the blow port temperature. Using the intake switch allows you to select a desired intake port manually (in the manual operation, FRESH and RECIRC modes alone are available). Pressing the DEF (defrost) mode switch selects the FRESH (fresh air intake).

Cooler start-up timing control
This function is used for maintaining the air flow at "LOW" level until the evaporator is sufficiently cooled down. It is intended to prevent a large volume of hot air being blowing into inside of a vehicle when the cooler is turned ON in hot summer season.

Heater start-up timing control
"LOW" level and also for maintaining the defrost mode until temperature of coolant in the heater core is sufficiently heated. It is intended to prevent a large volume of cool air being blown into inside of a vehicle when the heater is turned ON in cold winter season.

Solar radiation quantity offset control
The photodiode on the sun sensor determines solar radiation quantity accurately to offset interior temperature quickly.

Switch position storing function
This function is used for storing switch positions being selected in the immediately preceding operation, namely the last time the ignition has been turned OFF. It simplifies the setup procedures when restarting the system.

Self-diagnosis function
The self-diagnosis function turned ON from the panel switch makes your troubleshooting easier (for detail of this function, refer to Troubleshooting With Self-Diagnosis Function.