ATC Module: Notes

The automatic temperature control (ATC) module is installed in the center of the instrument panel. An integral control panel contains push switches and rotary switches/knobs for system control inputs. Orange tell-tale light emitting diode (LED)s in the switches and switch surrounds illuminate to indicate the current settings of the system. The rotary temperature switch is graduated in degrees Celsius, except on USA vehicles, where it is graduated in degrees Fahrenheit.

An in-vehicle temperature sensor and associated electric fan are installed behind a grille in the control panel.

The automatic temperature control (ATC) module processes inputs from the control panel switches and system sensors, then outputs the appropriate signals to control the air conditioning (A/C) system. In addition to controlling the air conditioning (A/C) system, the automatic temperature control (ATC) module also controls the following:

The heated windshield and windshield wiper parking area heater (optional fit, not available on vehicles with infra red protection glass).
The windshield washer jet heaters.
The heated rear window.
The front seat heaters.

NOTE: Operation of the climatic seats is controlled by rotary knobs on the automatic temperature control (ATC) module. For further information, refer to the 'Climatic Seats' information later in the instructions.