Front

A blower motor resistor is used on this model when it is equipped with the manual heater-A/C system. Models equipped with the optional Automatic Temperature Control (ATC) system use a blower power module, instead of the blower motor resistor block.

The blower motor resistor block is mounted to the rear of the HVAC housing, directly behind the glove box opening in the instrument panel. The resistor block consists of a molded plastic mounting plate with two integral connector receptacles. Concealed behind the mounting plate are four coiled resistor wires contained within a protective stamped steel cage. The blower motor resistor block is accessed for service by removing the glove box from the instrument panel.

The blower motor resistor block is connected to the vehicle electrical system through a dedicated take out and connector of the instrument panel wire harness. A second connector receptacle receives the pigtail wire connector from the blower motor. The blower motor resistor has multiple resistor wires, each of which will reduce the current flow through the blower motor to change the blower motor speed. The blower motor switch in the manual heater-A/C system directs the ground path for the blower motor through the correct resistor wire to obtain the selected speed.

With the blower motor switch in the lowest speed position, the ground path for the motor is applied through all of the resistor wires. Each higher speed selected with the blower motor switch applies the blower motor ground path through fewer of the resistor wires, increasing the blower motor speed.

The blower motor resistor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.