Torque Converter Clutch Lock-Up OFF (Disengaging Torque Converter Clutch)
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
When the fluid pressure to the lock-up fluid passage (94) in the torque converter is blocked, the torque converter clutch in the torque converter is released. The turbine and the torque converter cover are also released at this time, causing the mainshaft and the engine crankshaft to rotate at a different speed.