Switch or motor

:banghead:
How can i tell, if a electric window motor is bad, or it is the switch?
Window worked, then didn't, then did. off and on. It is now dead.

Try bypassing the switch to activate the affected motor. If it does not work, then it is the motor. If the panel can be pulled out, then check for power at the motor. If there is power, and the ground to the motor is good, then you have a bad motor.
Good Luck.