Nate's probably correct. The wiring to the element is not the same as what's going to the motor so it could be another problem but to check it, the first place to start is at the element which means carefully removing the glass and checking for voltage at the two element connectors. If you don't know how it's done, it's possible that you could break the glass in the process so proceed with caution if you want to try it yourself.

The heating element is probably gone. I had to replace just the glass element which I believe is attached to a heating element but don't quote me. It cost me about $80 to have it done at the dealer...works great now.