Dynasty L4-153 2.5L SOHC (1988)
Control Module HVAC: Description and Operation
Computer Controller
The ATC control computer manages all of the systems electronic functions. It provides power to operate the power/vacuum module (PVM) electronics
and blend-air door actuator. It remembers the operators control panel selected settings when the vehicle is not running and measures return input from
the temperature sensors. After measuring all input information, the computer will ground the output circuits to provide logic signals for automatic system
control. The computer control panel is not serviceable except for the mode, blower speed, temperature, A/C and off button illumination bulbs.
