AC15: Check Parking Brake Signal Switch

With the ignition key in the OFF position, disconnect the parking brake signal switch connector located on the parking brake pedal. Set the parking brake. Measure the resistance between the terminal on the parking brake signal switch and ground. See WIRING DIAGRAMS  . Is the resistance less than 5 ohms with the parking brake set, and greater than 10,000 ohms with parking brake released? If yes, go to the next step. If no, replace the parking brake signal switch and bracket.