How do you test starter relay on 2000 Toyota Sienna?

To test the starter relay on a 2000 Toyota Sienna, first locate the relay in the fuse box (usually under the hood). Use a multimeter to check for continuity by removing the relay and testing the terminals; a good relay will show continuity when the relay is energized. Alternatively, you can swap it with a similar relay in the fuse box to see if the vehicle starts. If the relay is faulty, it will need to be replaced.