This resistor is not related to the brakes.
Pulsating brakes are often caused by a slightly warped rotor disc. The fronts are usualy where they warp due to wear and heat. Common problem for all disc brake autos. The rotors can be "turned" by any brake shop. If thinner than specs, it's best to replace. They are not terribly expensive, around $50 from Phil at Buy Parts on this forum.