HelloCustomer Welcome to justanswer!
The solenoid is located right near the charcoal canister right next to the drivers rear tire. The part is what controls the fuel tank vent system. Get the new part and go back there. Its very easy to change. YOu will see easily which one it is if you have the new part. Get the piece from Toyota though.
Ok, in the file below is the diagram.
CLICK HERE FOR PDF FILE DOWNLOAD