The impeller (one) is rotated via the crankshaft and it converts the mechanical Electrical power of your crankshaft into kinetic Electricity by Placing the fluid in movement. The TP sensor indicates the throttle plate angle. If the motive force accelerates to huge-open throttle, the TCM disengages the TCC to downshift. https://torque-converter-clutch64062.ssnblog.com/33314028/the-basic-principles-of-torque-converter-clutch