Brake Lamp: Testing and Inspection

BRAKE LAMPS






NOTE: The Center High Mounted Stop Lamp (CHMSL) is illuminated by several Light-Emitting Diode (LED) units that are soldered to the electronic circuit board within the lamp housing. If the brake lamps and all of the LED units within the CHMSL fail to operate, diagnose and repair the brake lamps before attempting to repair the CHMSL. If the brake lamps operate but none of the CHMSL LED units illuminate, test and repair the CHMSL ground and/or supply circuit as required. If some of the CHMSL LED units operate and some do not, the CHMSL assembly must be replaced with a new unit.