Join Date: Mar 2011
Location: Mid Hudson Valley, NY (USA)
Re: 2005 Sienna V6 3.3 need a new idle air control valve
bsedgal is correct - there isn't a separate IAC on a 'fly by wire' throttle. The electronic throttle sets the plate at a paper thin opening to support an idle air flow. But you do have to keep it clean for it to work properly.
Current: '15 Sienna Limited Premium (FWD), '14 Subaru Outback, '13 Honda CRV AWD.
Past: '08 Sienna LE (FWD), '02 Subaru Outback, '02 Honda Odyssey EX