Idle Air Control (IAC) Valve

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Honda Odyssey, 2003 Honda Odyssey, 2002 Honda Odyssey, 2001 Honda Odyssey, and 2000 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

To maintain proper idle speed, the IAC valve changes the amount of air bypassing the throttle body in response to an electrical signal from the PCM.

Fig 1: Identifying Idle Air Control Valve

Courtesy of AMERICAN HONDA MOTOR CO., INC.