DTC C1430: Brake Pedal Load Sensing Switch OFF Stuck Malfunction; DTC C1431: Brake Pedal Load Sensing Switch ON Stuck Malfunction: Wiring Diagram

WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.