My Club Cars are both DS series carts, so if you have an IQ things may vary slightly.
Two fuses to check:
One is on the charger receptable itself.
The second is within a few inches of the receptable in a yellow housing.
Everytime someone has this issue it is recommended to reboot the OBC to be sure it is not locked. That info is here:
http://www.buggiesgonewild.com/elect...er-system.html