With all the a few-passage torque converter, two passages are utilized for transmission oil (ATF) circulation with the torque converter and for clutch cooling, even though the 3rd passage is utilised independently to manage the lock and unlock of the clutch. Don't forget, should you suspect a bad torque converter, https://torque-converter-clutch86307.blogdanica.com/34209338/a-secret-weapon-for-torque-converter-clutch