Scion 84340-69025 Stop Lamp Switch

Check the brake light switch properly before assuming the switch is faulty, if the brake lights aren't working, check the fuse and the bulbs. If they're operating properly, check the switch for voltage output. Scan around for an open circuit between components like the fuse block and switch, if there's no voltage. If there's power, apply pressure on the brake pedal and check the voltage on the other side. Purchase a new switch if there is no voltage. If there is voltage but the lights aren't working, find an open circuit between the switch and the lights, remove the electrical connector, rotate it counterclockwise to loosen it from its holder, and remove the switch from the holder. Setting up the switch starts by inserting it into the holder, pushing it in until it touches the rubber stop, and rotating it clockwise to secure it in place. make sure proper clearance to the rubber stop is (0.020 to 0.098 inches). Once you are done putting everything back together, test the brake lights before operating it.