Shadow V6-181 3.0L SOHC VIN 3 FI (1993)
Control Module HVAC: Description and Operation
Power/Vacuum Module (PVM)
The PVM receives logic signals from the computer. It then controls the vacuum to the water valve, outside air recirculation, floor-A/C bi-level and
defrost vacuum actuators. The PVM also supplies varied voltage to the blower motor ground circuit for different blower speeds.