There should be an inspection cover. Remove that and you should just be able to unbolt the torque converter from the flex plate. You'll have to turn the engine over by hand to access the bolts individually. That will separate the TQ from the engine. After that, it's just a matter of getting it all lined back up when you're putting it together.
"Fools", said I, "You do not know, silence like a cancer grows.
Hear my words that I might teach you. Take my arms that I might reach you"
But my words, like silent raindrops fell, and echoed, in the wells of silence.....
Toyota/Scion of Des Moines