Hello My name is Susie

[TheLooks]

I have a tool made by Skil Above, a teacher at the NRVTA produces them. It will test and operate about any system for leveling. But it will cost you about $750 at least. I hate working on leveling systems as they change them frequently and they are all different in how they operate. Even the hydraulics are reinvented with bi-directional flows instead of using valves to direct the one way flow. No filters on them.

 

[Kevin D Pem]

Of course it would be nice if we had a board number!!!

You have valves, hydraulic pump, and a logic board. Nothing hard about that!

2 12v jumpers to inject power to valves and pump will test the components (Open valve before engaging pump). From there check proper sensing circuits for a good signal, all before you waist money on the board!!!

My experience tells me connections first, switches second, solenoids third! Are the order of most failures (in almost anything with mechanical/electrical). If you do the first injection procedure, and test for signals, you will likely have fixed the problems...

For reliability in the future I would verify everything now, while you're working on it!!!