How adjust the idle speed on a 2003 Toyota Sequoia?

To adjust the idle speed on a 2003 Toyota Sequoia, you typically need to start with the engine at operating temperature. Locate the idle air control (IAC) valve, which is positioned on the throttle body. Adjust the idle speed by turning the IAC adjustment screw, if applicable, while monitoring the engine's RPM with a tachometer. However, it's important to note that the idle speed is often controlled by the engine's ECU, and any adjustments should be done carefully to avoid causing engine issues.