"The power outlet itself has a fusible link on the back of it, it is a short and thin section of tin wire that will act as a fusible link at the (+) supply and will burn out.
I am not sure if that helps, you have more issues to deal with right now.
The plug unit can be popped out and replaced. Or find a 7.5 to 10 watt fusible link. "
http://www.toyotanation.com/forum/16-archived-corolla-threads/36243-help-12v-120w-aux-power-outlet-dead.html