Blower Motor: Description and Operation

BLOWER MOTOR
The blower motor and blower wheel are located in the passenger side end of the heater-A/C housing, below the glove box. The blower motor controls the velocity of air flowing through the heater-A/C housing by spinning a squirrel cage-type blower wheel within the housing at the selected speed. The blower motor and wheel can be removed through an opening in the engine compartment side of the dash panel without heater-A/C housing removal.

The blower motor will only operate when the ignition switch is in the ON position, and the heater-A/C mode control switch knob is in any position, except Off. The blower motor receives a ground feed at all times. The blower motor battery feed circuit is protected by a fuse in the fuseblock module for all blower speeds except high. The high speed battery feed circuit is protected by a fuse in the Power Distribution Center (PDC). Blower motor speed is controlled by regulating the battery feed through the blower motor switch, blower motor resistor, and a blower motor relay.

The blower motor and blower motor wheel cannot be repaired and, if faulty or damaged, they must be replaced. The blower motor and blower wheel are serviced only as a unit.