TC BY Maserati V6-181 2972cc 3.0L SOHC VIN S FI (1991)
Control Module HVAC: Description and Operation
Power Module
Power Module
The power module (PM) receives pulse width modulated logic signals from the computer control. The PM then supplies varied voltage to the blower
motor ground circuit for different blower speeds based on the logic signal. The power module is not serviceable and must be replaced if found to be
defective.