Town & Country V6-3.3L VIN R (2003)
Fig.3 Blower Motor
REAR 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 in a housing near the top of the rear heater-A/C unit in the passenger compartment behind the right rear wheel
house. The rear heater-A/C unit housing must be removed from the vehicle to access the blower motor and blower wheel for service. 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 rear blower motor will operate whenever the ignition switch is in the ON position, the heater-A/C control power is turned ON, and the rear
heater-A/C system control switch on the front heater-A/C control is not in the OFF position. The blower motor can only be turned OFF by turning
OFF the rear system at the front heater-A/C control. The blower motor receives battery current whenever the rear blower motor relay is energized.
The rear 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 MTC 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 rear heater-A/C unit housing. The blower motor controls the velocity of
the air flowing through the rear 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.
