How do you change an Idle air valve on a 1999 Toyota Solara?

To change the idle air control valve on a 1999 Toyota Solara, first ensure the engine is off and cool. Disconnect the negative battery terminal, then locate the idle air control valve on the throttle body. Remove the electrical connector and the mounting screws, then carefully pull the valve out. Install the new valve by reversing the process, making sure to secure it properly and reconnect the battery before starting the engine.