Pacifica V6-3.8L VIN L (2005)
Blower Motor: Description and Operation
Rear
Rear Blower Motor
Vehicles equipped with 4 passenger seating and automatic temperature control (ATC) heating-A/C system, use a 12-volt, direct current (DC) rear blower
motor. The rear blower motor has an integral wire harness and two squirrel cage-type blower wheels that are secured to the blower motor shaft.The
blower motor and wheels are contained within the two halves of the rear blower motor housing,which is located under the front center floor console
cover.
The rear blower motor and wheels are used to control the velocity of air moving through the center floor console ducts by spinning the blower wheels
within the housing at the selected or programmed speed (depending on application).
The rear blower motor will operate whenever the ignition switch is in the On position and the power for the A/C-heater control of the automatic
temperature control (ATC) heating-A/C system is turned on. When the ATC A/C-heater control display reads REAR AUTO or when the rear blower
motor is off, the switch located in the center console between the second row seats is not functional. When the A/C-heater control display reads REAR,
only the rear seat occupants control the rear blower motor speed from the rear switch. When in the Rear mode, the rear occupants can set the rear switch
to any blower motor speed including OFF or AUTO. While in the Auto position, the rear blower motor speed will be automatically controlled.
The rear blower motor speed is controlled by an electronic blower motor power module, which uses a pulse width modulated input from the ATC
A/C-heater control and feedback signal from the rear blower motor to regulate the blower motor ground path. The rear blower motor receives battery
current whenever the rear blower motor relay is energized.
The rear blower motor and blower motor wheels are factory balanced and cannot be adjusted or repaired. If faulty or damaged, the rear blower motor and
blower wheels must be replaced as an assembly.