Blower Motor: Description and Operation

The blower motor is a 12-volt, Direct Current (DC) motor with a squirrel cage-type blower wheel that is secured to the blower motor shaft. The blower motor and wheel are located near the passenger side end of the HVAC housing in the passenger compartment below the instrument panel. The blower motor and blower motor wheel are a factory balanced unit and cannot be adjusted or repaired. If faulty or damaged, the blower motor and blower wheel must be replaced as an assembly

The blower motor will operate whenever the ignition switch is in the On position, and the blower control switch is in any position except Off. The blower motor circuit is protected by a fuse in the instrument panel fuse block. The blower motor speed is controlled by regulating the battery feed through the blower control switch and the blower motor resistor. The blower motor and wheel are used to control the velocity of air moving through the heater-only or A/Cheater systems. The blower motor controls the velocity of the air flowing through the HVAC housing by spinning the blower wheel within the housing at the selected speed.