PT Cruiser L4-2.4L Turbo VIN G (2004)
Blower Motor Resistor: Description and Operation
Blower Motor Resistor Block
The blower motor resistor block is located in the cowl, at the base of the windshield. There are two different blow motor resistor blocks depending on
whether the vehicle is equipped with A/C or not.
The blower motor resistor block is mounted to the dash panel within the engine compartment. The resistor block 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 protective stamped
steel cage. The blower motor resistor block is accessed for service by removing the cowl top screen.
The blower motor resistor block is connected to the vehicle electrical system through a dedicated take out and connector of the vehicle harness. 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 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.
When the switch is in the highest speed position, blower motor resistor block is bypassed and the blower motor receives a direct path to ground.
The blower motor resistor block cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.
