Leveling Jack Problem 2003 Itasca Suncruiser

[Retired Ford]

Hi I'm dealing with a pump that runs normal however when deploying the first leveling Jack nothing happens! The system worked perfect 2 months ago but I'm winterizing now and having a fun time trying to level the coach, notes are resiviore is full no leaks , 4 valve's T release valves closed , park break set, its something simple I'm overlooking; been reading all manuals with no Troubleshooting prints? Any help members of experience! Retired Ford

[Retired Ford]

Iv read that if you swapped the connector from a known working location of the other 3 Jack's that you can isolate the issue to one faild component! It's like swapping a spark plug wire and moving the trouble from one cylinder to another! Good luck