Roland,
It sounds like you are reading instructions for recalibrating the leveling system. I do not understand what answers you are looking for here. If you install the cables and the system powers up, that just tells you that the controller is not totally dead, and that is good to know before repairing and reinstalling the jacks. But it does not tell you if the system will level the coach, and if the system turns on the pump while recalibrating, it can cause pump failure in a very short time with the hoses plugged, and if that happens, your living room slide will not function.
Since I would not have a coach without a leveling system, I would either decide on installing another system or have the leaking jacks fixed, and if the leveling electronics do not work, I would install the manual leveling conversion that BCS designed to repair these leveling systems when the electronic components were no longer available.
Gerald