Town & Country V6-3.8L VIN L (2006)
Blower Motor Resistor: Description and Operation
Rear
Blower Motor Resistor Typical
A rear blower motor resistor is used on this model when equipped with the manual temperature control (MTC) rear heater-A/C system. The rear blower
motor resistor is mounted to the back of the rear HVAC housing, directly below the rear blower motor. The rear blower motor resistor consists of a
molded plastic mounting plate with an integral wire ,connector receptacle. Concealed behind the mounting plate are coiled resistor wires contained
within a ceramic heat sink. The rear blower motor resistor is accessed for service by removing the rear HVAC housing from the right side of the vehicle.
The rear blower motor resistor is connected to the vehicle electrical system through a dedicated take out and connector of the rear HVAC wire harness.
The rear blower motor resistor has an electrical circuit board with two resistors, each of which will reduce the current flow through the rear blower motor
to change the blower motor speed.
The blower motor switch in the manual temperature control system directs the ground path for the rear blower motor through the correct resistor to
obtain the selected speed. With the blower motor switch in the lowest speed position, the ground path for the motor is applied through both resistors.
Each higher speed selected with the blower motor switch applies the blower motor ground path through fewer of the resistors, increasing the blower
motor speed. When the blower motor switch is in the highest speed position, the blower motor resistors are bypassed and the blower motor receives a
direct path to ground through the blower motor switch.
The rear blower motor resistor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.