How do I fix the moon roof? on 2002 Nissan Sentra

The moon roof is not working. The good news is that it's CLOSED, but it will not OPEN or TILT. Any and all advice for trouble-shooting and repair would be greatly appreciated.

Asked by for the 2002 Nissan Sentra
start by testing power at switch,pwr into swtich then outof switch to moon roof