Discovery: Leveling system and Slides (2) all non-functional

[nairbg]

Upon retrieving our 1999 Pace Arrow Vision from storage and replacing the batteries, the leveling system will not power up, and neither of the slides will function. There is no inkling of an attempt from the slide motors.

New chassis battery starts the engine easily.

House batteries fully charged.

Engine running, vehicle in Park and park brake set.

Power is present at ECC fuse 11.

Is there something common to all 3 of these

Any ideas?

[KF5UMC]

The common denominator is 12 vdc I would think. Check for 12 volts at the motors of the slides.What type of levelers? Electric or hydraulic? If Electric check motor harness for 12 volts....all have fuses. Double check battery wiring. Maybe a cable got left off.
Good Luck

[nairbg]

Originally Posted by KF5UMC

The common denominator is 12 vdc I would think. Check for 12 volts at the motors of the slides.What type of levelers? Electric or hydraulic? If Electric check motor harness for 12 volts....all have fuses. Double check battery wiring. Maybe a cable got left off.
Good Luck

I got the slides working but still no leveling jacks. The control panel doesn't light up the "on" indicator.

The ECC schematic shows that fuse F11 is a 10A fuse that supplies the "Level Jacks", and that fuse is good. I am trying to figure out what is downstream of that fuse, but I cannot locate the control module.

[KF5UMC]

On our coach the leveling jack control box provides 12 volts to the jacks and the control panel. There is a resetable 90 amp fuse between the battery and this control box...You need to verify you have 12 volts at the control box. You can also use and external 12 volt power supply to the box. If that works, your problem is with in the 12 volts going to the control box. Maybe a fuse is behind the control panel?

John

[nairbg]

Originally Posted by KF5UMC

On our coach the leveling jack control box provides 12 volts to the jacks and the control panel. There is a resetable 90 amp fuse between the battery and this control box...You need to verify you have 12 volts at the control box. You can also use and external 12 volt power supply to the box. If that works, your problem is with in the 12 volts going to the control box. Maybe a fuse is behind the control panel?

John

Where did you find the control box and that 90A fuse?

[TT_Vert]

Originally Posted by nairbg

I got the slides working but still no leveling jacks. The control panel doesn't light up the "on" indicator.

The ECC schematic shows that fuse F11 is a 10A fuse that supplies the "Level Jacks", and that fuse is good. I am trying to figure out what is downstream of that fuse, but I cannot locate the control module.

I have an older unit (95 southwind) but had a similar problem. Mine turned out to be a bad crimp at one of the 12Vdc feeds to the panel at the panel plug. One plug feeds all of the hydraulic solenoids and the other is inputs (power, ground, NSS and brake switch) I can find the pin # for mine if it'd help you? I still have the original manual w/ all schematics and troubleshooting. At first I thought it was a bodge by the previous owner but I took my DVOM to it and saw I had power about 2" before the plug and on visual inspection the wire looked fine. I depinned that terminal and the wire fell off the crimp. So my DVOM testing is the only reason I discovered the issue. Also you need to ensure your leveling system is seeing what i needs to see from the brake switch (Mine grounds) as well as the neutral safety switch (Also ground for me). This manual may not apply to you but it may also get you pointed in the correct direction to check your voltages

Dave

[TT_Vert]

Originally Posted by nairbg

I got the slides working but still no leveling jacks. The control panel doesn't light up the "on" indicator.

The ECC schematic shows that fuse F11 is a 10A fuse that supplies the "Level Jacks", and that fuse is good. I am trying to figure out what is downstream of that fuse, but I cannot locate the control module.

I have an older unit (95 southwind) but had a similar problem. Mine turned out to be a bad crimp at one of the 12Vdc feeds to the panel. I can find the pin # for mine if it'd help you? I sitll have the orignal manual w/ all schematics and troubleshooting. At first I thought it was a bodge by the previous owner but I took my DVOM to it and saw I had power about 2" before the plug and on visual inspection the wire looked fine. I depinned that terminal and the wire fell off the crimp. So my DVOM testing is the only reason I discovered the issue. Also you need to ensure your leveling system is seeing what i needs to see from the brake switch (Mine grounds) as well as the neutral safety switch (Also ground for me). This manual may not apply to you but it may also get you pointed in the correct direction to check your voltages.

"IF" the wire to your parking brake were to come dislodged it would indicate to the leveling system that it was not engaged and that light would not come on. More than likely it's one spade wire that the Teed off of the original harness. Check that and ensure your parking brake light on dash illuminates.

Dave

[nairbg]

So, it turns out that the functionality of the (2) slides is intermittent. Either they both work or neither work.

I am trying to follow the wiring diagram for the slides but I am having little success. Can you fellows tell me if there is one or two slide controller units, and where it/they might be?

I am thinking that the fact that it's a both or none failure mode should be telling.

[Dealbreaker]

I had a similar issue with my rig recently. The 10-amp fuse isn't large enough to power the slides or the leveling system, never mind both. In my case, I lost the stairs, leveling system and dash blower - all on the same fuse.

The answer turned out to be relays. The 10-amp fuse (in my case) feeds power to a bank of 5 relays located in the engine bay (center, behind the air intake). Those relays each control a separate component. Mine wasn't a bad relay - just a dirty one.