Where idle air control valve located on 2003 Toyota Corolla?

The idle air control (IAC) valve on a 2003 Toyota Corolla is typically located on the throttle body. To access it, you may need to remove the air intake duct and possibly other components, as it is mounted directly to the throttle body assembly. The IAC valve is responsible for regulating the engine's idle speed by controlling the amount of air entering the intake manifold. Always consult a repair manual for specific instructions and diagrams for your vehicle model.