Idle Up Control Valve: Description and Operation

- The idle air control solenoid valve is incorporated in the throttle body and regulates the amount of intake air which bypasses the throttle valve built into the throttle body. It is activated by a signal sent from the ECM to mainly maintain engine idle speed to the target engine speed.

- The idle air control solenoid valve is a rotary valve solenoid type which consists of a coil, rotary valve, spring and housing. The housing is integral with the throttle body and is provided with the opening area of bypass air port which is changed by the rotary valve.