check the override switch, mine is in the step well next to switches for outside light, indoor lights and storage bin lights.
check all your batteries are fully charged.
does the light under the step come on when the door is open?
I just went through the hassle of fault finding and replacing both controller and motor.
there is a fault finding PDF
http://support.powergearus.com/techd...ow%20Chart.pdf
that is good except for the bit about checking the motor. the motor voltage only runs for a few seconds after opening or closing
the door. I changed the contol box first then the motor. it's not a particularly difficult job - just awkward, especially for one person.