I usually advise that you simply take away the torque converter from the transmission to diagnose it effectively. Modern day torque converters have Digital Charge of the clutch Procedure. The force while in the torque converter clutch is controlled through a major regulator valve that's piloted by a solenoid (see https://torqueconverterclutch53061.tokka-blog.com/34511108/the-best-side-of-torque-converter-clutch