July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Idle Air Control (IAC) Valve

Idle Air Control (IAC) valve is located on bottom of throttle body. IAC valve opens and closes air by-pass passage according to signal from PCM. When open, air is supplied to intake manifold, which increases engine RPM for different engine loads. To check IAC valve operation, refer to testing procedures for DTC P0505. See the TESTS W/CODES article.