If the steps are in the out position , at least the 4 bolts that hold the step assembly to the frame are accessible .
If the motor runs , for more than a second, and you have to move the coach, then remove the motor and gear box , and wire the stairs up till you get the motor/gear drive fixed. If you don't have to move the coach, block the stairs, so they are usable and take the motor/gear box in for repair.
If the motor starts , then stops almost immediately , then the mechanism is binding and the control box shuts down power to avoid burning out the motor. Check for bent components and lube the mechanism.
Kwikee, web site has manuals as downloads, if you don't have one.
The manual PDF file that I have is on another computer that my DW has out of town or I'd post it for you.