Originally Posted by I-RV
Ken, I have been following your problem and know that you are probably grasping at straws now. Well here is a straw from just logic:
Since all of your slides stopped working at the same time, one theory would be the ignition lockout that prevents the slides from working when on. In researching the Freightliner schematics (there are no FR schematics - LOL). There is a fused 10A ignition and accessory interface to the body builder (ie: FR). You can start there; checking those fuses.
Since this line is probably only a signal line (not for power), it probably feeds a relay somewhere (only FR and God knows where) that turns on power to the slides when the ignition is off.
Just a straw of a thought.
I did pull every fuse in the outside 12v access compartment directly below the driver. Measured each for open and all were fine.
Are there more fuses under the dash ?
I am positive it's a fuse somewhere to lock out all four. I only wish I was there when it happened so I would know if there were any noises that accompanied the failure. DW is not a good source of information for things like that.
To summarize: I pulled all the fuses I could find and tested them. This included the 12v fuse panel on the outside by the driver, whatever fuses I could find by the batteries (both house and chassis) and an inline fuse right at the motor.
Additionally, there is a clearly marked relay (tape with the word "Slides" on it) in the 12v compartment. I ordered a replacement and tried it with no change. There are several relays there and all are marked nicely.
My last hope prior to taking it in (or having a tech come out) is a response from Randy with any more ideas he may have.
Good luck with the surgery. Hope it works out well for you.