Motor, Blower: Operation: Operation
WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
The rear blower motor controls the velocity of the air moving through the rear heater-A/C housing by spinning the blower wheel within the housing at the selected or programmed speed.
The rear blower motor operates only when the ignition switch is in RUN and the front A/C-heater control is set to either front control of rear heating-A/C system, or to the rear control of the rear heating-A/C system. The rear blower motor speed is controlled by the rear blower motor power module.
The rear blower motor and blower wheel are factory balanced and cannot be adjusted or repaired and must be replaced as an assembly if inoperative or damaged.