Pump (Impeller): The driving member that is definitely hooked up for the engine. It spins Together with the engine and moves transmission fluid in the torque converter. Inside of a two-passage torque converter clutch actuation method (as in the pictures above), the lock-up clutch is put in on the turbine https://torqueconverterclutch39516.onesmablog.com/new-step-by-step-map-for-torque-converter-clutch-74887481