Together with the three-passage torque converter, two passages are useful for transmission oil (ATF) movement through the torque converter and for clutch cooling, though the 3rd passage is employed independently to control the lock and unlock with the clutch. The tables under summarises the definition of every DTC, their meaning, https://rafaelsbhns.worldblogged.com/40026131/the-smart-trick-of-torque-converter-clutch-that-no-one-is-discussing