Blower Motor Resistor Block: Description

Vehicles with manual air conditioning (non-ATC) systems will have a blower motor resistor block. The resistor block is mounted to the lower right side of the HVAC housing in the passenger compartment, where it can be accessed for service.

The blower motor resistor has multiple resistor wires, each of which will change the resistance in the blower motor ground path to change the blower motor speed. The blower motor switch directs the ground path through the correct resistor wire to obtain the selected blower motor speed.

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