Jeep Workshop Manuals
Grand Cherokee 2WD V6-3.7L (2008)
Relays and Modules > Relays and Modules - HVAC > Control Module HVAC > Component Information > Description and Operation > Blower Motor Power Module - Description > Page 271
Control Module HVAC: Description and Operation
The blower motor power module is connected to the vehicle electrical system through a dedicated lead and connector of the HVAC wire harness. A
The PWM voltage is applied to a comparator circuit which compares the PWM signal voltage to the blower motor feedback voltage. The resulting
The blower motor power module is diagnosed using a scan tool .
The blower motor power module cannot be adjusted or repaired and must be replaced if found inoperative or damaged.
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