October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
TAC Brake Switch
Scan tool displays APPLIED or RELEASED. Indicates the brake pedal position. When the brake pedal is depressed a signal voltage is sent to the TAC module, that signal is then sent to the PCM across serial data. If a fault occurs on this circuit known as the Stoplamp Switch Circuit, a P1574 will set.