my Tacoma started idiling very high possible iac motor failure.where is it located?
Are you guessing? What evidence do you have it failed? The part itself is about $150. It can be a very expensive service procedure to just throw parts at a problem hoping it will fix the problem.
The IAC is located on nearly every car at the throttle body. I am concerned if you have to ask the location, you might not have the needed skills to identify and repair the problem.