I ran across this off of a google search, and was amazed at the detail. It gives everything from how the VVTi works to what the oil circuit is to ECU descriptions. I really wish I had found this earlier. Tried to upload as an attachment but it was too big. Saved to local disk if the link ever goes down.

http://www.autoclub72.ru/forum/index.php?act=attach&type=post&id=1552

Very nice manual, some stuff is specific to Yaris but 90% is same as xB. Thank you!

Wrong place, sorry.