I constantly suggest that you simply take out the torque converter in the transmission to diagnose it effectively. Modern torque converters have electronic Charge of the clutch Procedure. The stress while in the torque converter clutch is controlled via a main regulator valve that's piloted by a solenoid (see shots https://torque-converter-clutch31728.blogdosaga.com/34147105/the-best-side-of-torque-converter-clutch