2006 Honda TRX680 Rincon Factory Service Manual, Page 48Get this manual
TECHNICAL FEATURES IACV (Idle Air Control Valve) The IACV consists of step motor and slide valve, and controls the amount of air bypassed around the closed throttle valveWith the ignition switch ON, the amount of idle air is determined from information detected by the ECT sensorDuring engine start-up or while maintaining idle (throttle valve closed), the amount of inlet air is adjusted by various sensors' informationThis system eliminates the need for manual idle speed adjustment and high altitude adjustment settings
THROTTLE BODY
STEP MOTOR
SLIDE VALVE