Air conditioning

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Control of A/C function. DICE uses the following values to determine whether the A/C compressor should be allowed to operate:

Coolant temperature
A/C system pressure
Evaporator temperature
Outer temperature
Vehicle speed
Running time of the engine

If DICE allows the A/C compressor to operate, it sends a bus message that is used by the engine management system to activate the relay for the compressor clutch.