Voyager V6-3.3L VIN 3 Flex Fuel (2003)
Blower Motor: Description and Operation
Fig.7 Blower Motor
FRONT BLOWER MOTOR
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 heater-A/C unit within the two halves of the intake air 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 a unit.
The blower motor will operate whenever the ignition switch is in the ON position and the heater-A/C control power is turned on. The blower
motor can only be turned OFF by turning OFF the power at the heater-A/C control. The blower motor receives battery current whenever the front
blower motor relay is energized. The front blower motor relay output circuit is protected by a fuse in the Intelligent Power Module (IPM) located
in the engine compartment near the battery. In the Manual system, the blower motor speed is controlled by regulating the path to ground through
the blower control switch and the blower motor resistor. In the ATC system, the blower motor speed is controlled by an electronic blower power
module, which uses a pulse width modulated input from the ATC module and feedback from the blower motor to regulate the blower motor
ground path it provides. The blower motor and wheel are used to control the velocity of air moving through the heater-A/C unit housing. The
blower motor controls the velocity of the air flowing through the heater-A/C housing by spinning the blower wheel within the housing at the
selected speed or, in the ATC system, at the selected or programmed speed.
