Circuit Description
WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
This is the TRAC control main switch. When the TRAC cut switch is turned on, the TRAC control goes off and the TRAC OFF indicator lights up. If the ignition switch is turned OFF, TRAC control surely comes on the next time the ignition switch is turned ON.