DTC P0719: Torque Converter Clutch Brake Switch Open: Description

The Torque Converter Clutch (TCC) brake switch indicates brake pedal status to PCM. The TCC brake switch indicates that brake pedal is either applied or released. The normally closed switch supplies battery voltage to PCM. Applying brake pedal opens TCC brake switch, interrupting voltage to PCM. When PCM receives zero volts at TCC brake switch input, PCM turns off the torque converter clutch Pulse Width Modulation (PWM) solenoid.

If PCM detects an open brake switch (indicating pedal applied) during a number of accelerations, DTC will set. DTC P0719 is a Type "C" DTC.