Torque Converter Clutch: Description and Operation

The torque converter clutch (TCC) provides a mechanical link or direct drive between the engine crankshaft and turbine shaft when applied. The application of the torque converter clutch is controlled by the powertrain control module (PCM). Under certain conditions, the PCM sends the appropriate signal to the torque converter clutch (TCC) solenoid which allows fluid pressure within the torque converter to force the TCC piston plate and damper assembly against the cover creating a mechanical link between the engine and transaxle.