Thought I would pass this on as I had issues with our electric step while on vacation. The problem was intermittent as it would not work for a few day's and then for some reason started working and then quit again. I was able to find the cause of problem fairly easily bypassing the long Kwikee check procedure decided to work back wards from the step motor removed the plug and placed meter across the red and yellow wire's while my wife opened and closed the door making sure of course that the step switch was turned on, as the door opened and closed you could see the control voltage was turning on off as it should. At this point I knew all was working correctly decided to remove the motor assembly and disassemble the motor I cleaned the commutator the part the brushes run on using fine emory carefully cleaned out the grooves between contact point as this Isolates each segment using a nail file or narrow blade. Reassembled and all works the way it's supposed to. If you don't want to mess with this but need to use your steps, you can remove the link pin from the arm buy two 4" C clamps pull out steps and clamp each side where the angle Iron frame is together and you can function normally. When ready to go on the road again clamp back in or use a tie strap to secure while travelling.
Hope this helps.