Idle Air Control (IAC) Valve
WARNING: This page is about a different car, the 2003 Suzuki XL-7, 2003 Suzuki Vitara, 2003 Suzuki Grand Vitara, and 2003 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
See IDLE AIR CONTROL (IAC) VALVE under IDLE CONTROL SYSTEM.