Regal V6-3.8L SC VIN 1 (1998)
Vacuum Solenoid Valve HVAC: Description and Operation
The vacuum solenoid converts electrical signals from the heater A/C control microprocessor into vacuum commands which position the mode,
A/C-defrost, and outside air valves in the air distributor. Vacuum is constantly applied to the module. When the heater A/C control signals the module to
change an air distributor valve position, the associated solenoid energizes and vacuum is applied to the proper actuator.
