where is the fuel relay in a 2008 scion xd

I had no power to the fuel pump so I tried to locate the relay to see if that was the problem. It turns out that it was a computer issue. The computer killed the power to the fuel pump when it sensed another issue. It's a safety thing; computer sees a problem.....shut off the fuel flow. The computer code was cleared, the issue was nothing serious, system restored. This was diagnosed by a mechanic after I spent days trying to figure out why there was no power to the fuel pump. Never again, go straight to the shop, computers change everything!