Automatic Temperature Control Module (ATCM)

The Automatic Temperature Control Module (ATCM) processes inputs from the Touch Screen (TS), the Integrated Control Panel (ICP) and the system sensors. In response to these inputs, the ATCM outputs control signals to the Air Conditioning (A/C) system and the heating and ventilation system.

Three electrical connectors provide the interface between the ATCM and the vehicle wiring. The ATCM uses hardwired inputs from the system sensors, the Local Interconnect Network (LIN) bus to communicate with the recirculation, temperature blend, distribution and center face vent motors, and the High Speed (HS) Controller Area Network (CAN) comfort systems bus to communicate with other control modules on the vehicle.

The ATCM uses Local Interconnect Network (LIN) bus connection to communicate with the following:

• Recirculation motor
• Temperature blend motor
• Air distribution motor
• Center face vent motor

In addition to controlling the A/C system and the heating and ventilation system, the ATCM also controls the following:

• Front and rear seat heaters (if equipped)

  For additional information, refer to: SEATS .

• Front climate seats (if equipped)

  For additional information, refer to: SEATS .

• Electric booster heater (if equipped)

  For additional information, refer to: ELECTRIC BOOSTER HEATER .

• Fuel Fired Booster Heater (FFBH) (if equipped).

For additional information, refer to: FUEL FIRED BOOSTER HEATER .