Control Components: Overview

Control Components

OVERVIEW
The climate control system is controlled by the ATC (automatic temperature control) module. It controls the heating and ventilation system and the A/C (air conditioning) system to regulate the temperature, volume and distribution of air into the passenger compartment. The system is either a dual zone or four zone system, depending on vehicle specification, which is fully automatic and capable of supplying individual temperature levels to each zone of the passenger compartment, up to a maximum differential of approximately 3 °C (5.4 °F). Manual overrides for the system include inlet air source, blower speed and air distribution. These selections can be made on the TSD (touch screen display), the ICP (integrated control panel) and, on four zone systems, the rear climate control panel.
The two and four zone climate control systems contain the same hardware. Different software in their respective ATC (automatic temperature control) modules produces the different functionality required by the two systems.