I haven't really read the Tacoma FSM, so take this for what it's worth:
1) The motor should self adjust using the IAC.. I think. I read that the source of the IAC air must be "metered" - meaning after the AFM, but my TB setup looks like the source of air is just in front of the butterfly on the TB.
2) There is an adjustable stop on the TB assembly - look for the vacuum arm think on the TB. There is a set screw and nut.
3) No manual "air bleed" screw like on the 22RE - ECU should set the base idle.
