Control Module HVAC: Description and Operation

COMPONENT DESCRIPTION
The auto amplifier has a built-in microcomputer which processes information sent from various sensors needed for air conditioner operation. The mode door motor (LCU), air mix door motor (LCU) and bi-level door motor (LCU), intake door motor, blower motor, rear vent door motor and compressor are then controlled.
The auto amplifier is unitized with control mechanisms. Signals from various switches and Potentio Temperature Control (PTC) are directly entered into auto amplifier.
Self-diagnostic functions are also built into auto amplifier to provide quick check of malfunctions in the auto air conditioner system.