To provide a controller for an electric power steering system capable of balancing a steering assist force by correcting an offset and improving the steering feeling. In testing each identified control for an associated label, an accessibility interface query can be applied to each identified control in the window. The movable member seat is combined with a movable member by insertion pins, and the top end of the movable member is in connection with an eccentric wheel seat. 1 mm may be applied for the machining of uneven surfaces resulting from the chemical process of copper removal. The position of a connection terminal of a protective circuit unit corresponds to the position of the lead plate and together with the connection terminal shape the connection terminal is prevented from being exposed to the outside during hot-melt molding. The controller and associated sensors function to assure that sufficient charge passes through conductors applied to the body of the vehicle to maintain cathodic protection on a consistent basis.