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Loosing Trailer Brakes

Good Find! This re-affirms H3LZSN1P3R thoughts on this issue. Will swap this out this weekend.
 
I only made it about 10 minutes down the road with my brand new GD 270BN and got the trailer brakes disconnected message. I returned to the dealer. They troubleshot for a few and discovered with their equipment the brakes weren't working either. It ended up being a ground wire that is connected to the emergency brake switch on the hitch itself. It was pinched between the exterior of the trailer and nut causing it to rub the insulation off and short out intermittently. Well, atleast that has worked so far for the rest of the drive home. I have not towed it since yet.
 
I found the connection behind the bumper was not seated all the way. It’s easy to reach up and push while plugging in the trailer.


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Drum Roll Pleas.....AND THE WINNER IS>>>>> @CdnHO !!!! I started at the front and worked my way back. The Truck and trailer were evaluated at RAM and RAM again reiterated that the truck is functioning properly. Replaced 7pin to the proper blade setup per H3LZSN1P3R's idea, unfortunately the problem still persisted. Checked junction box in head of 5th wheel, no problems there. So I moved to the brakes and axles. Sure enough, just at CDNHO mentioned, the wire running through the rear axle had been worn away and was fully exposed causing the fault. Replaced the wiring today and everything is working as it should.

Thanks to this community for all the great ideas and suggestions - I definitely would have gone crazy trying to trouble shoot this myself.
 
DieselJ said:
Drum Roll Pleas.....AND THE WINNER IS>>>>> @CdnHO !!!! I started at the front and worked my way back. The Truck and trailer were evaluated at RAM and RAM again reiterated that the truck is functioning properly. Replaced 7pin to the proper blade setup per H3LZSN1P3R's idea, unfortunately the problem still persisted. Checked junction box in head of 5th wheel, no problems there. So I moved to the brakes and axles. Sure enough, just at CDNHO mentioned, the wire running through the rear axle had been worn away and was fully exposed causing the fault. Replaced the wiring today and everything is working as it should.

Thanks to this community for all the great ideas and suggestions - I definitely would have gone crazy trying to trouble shoot this myself.Ha
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DieselJ said:
Drum Roll Pleas.....AND THE WINNER IS>>>>> @CdnHO !!!! I started at the front and worked my way back. The Truck and trailer were evaluated at RAM and RAM again reiterated that the truck is functioning properly. Replaced 7pin to the proper blade setup per H3LZSN1P3R's idea, unfortunately the problem still persisted. Checked junction box in head of 5th wheel, no problems there. So I moved to the brakes and axles. Sure enough, just at CDNHO mentioned, the wire running through the rear axle had been worn away and was fully exposed causing the fault. Replaced the wiring today and everything is working as it should.

Thanks to this community for all the great ideas and suggestions - I definitely would have gone crazy trying to trouble shoot this myself.
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Happy for you it worked out.
 
DieselJ said:
Drum Roll Pleas.....AND THE WINNER IS>>>>> @CdnHO !!!! I started at the front and worked my way back. The Truck and trailer were evaluated at RAM and RAM again reiterated that the truck is functioning properly. Replaced 7pin to the proper blade setup per H3LZSN1P3R's idea, unfortunately the problem still persisted. Checked junction box in head of 5th wheel, no problems there. So I moved to the brakes and axles. Sure enough, just at CDNHO mentioned, the wire running through the rear axle had been worn away and was fully exposed causing the fault. Replaced the wiring today and everything is working as it should.

Thanks to this community for all the great ideas and suggestions - I definitely would have gone crazy trying to trouble shoot this myself.
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I would like to point out i stated to check that out in post #7 vs @CdnHO post #20 not that it matters lol regardless i am glad you got it fixed up!
 
DieselJ said:
Need some help with a braking issue before I lose my mind.

Trailer: 2018 Grand Design Solitude 375RES 5th wheel. We are the second owner and used it from Jan to Oct without issue last year.

Truck: 2022 Ram 3500 DW Diesel – 4,800 miles new

  • Took the trailer into a Grand Design Dealer for a recall on Refrigerator wiring harness; while there they did an inspection, repacked bearings, replaced backing plate on Drivers side front wheel.
  • First Trip of season – No issues
  • Second trip of season Trailer brakes “disconnected” appeared on truck console. I pulled to the side of Hwy and verified all connectors were secure and lights at rear of vehicle work as expected. We were 20min away from camp so just got back on the Hwy and took it slow. The brakes were intermittent, coming and going with no rhyme or reason. By the time I arrived at camp, the brakes were working fine, so I couldn’t isolate if it was the truck or trailer.
  • While on “Vacation” I took the truck to the local Ram dealer who checked it out and said the truck looks good, but it did store a code – C10C7-19 “Electronic Brake controller output-over current”. In short, they told me it’s the trailer’s fault.
  • Had a mobile RV tech come out to camp who did visual inspection of the underbody, took apart connections at pin box and reconnected (but said everything looked tight). He was thinking it has more to do with a poor connection between the 7 pin blades. He bent the blades a bit to make a tighter connection.
  • End of vacation – 5 minutes on the road and the brakes go out again. I moved the 7 pin connection from the bed of the truck to the bumper – still no brakes. I decided I would drive her home cautiously and then straight to the Grand Design RV Dealer. Once on the Hwy, the brakes started working again and it was smooth sailing the whole way home and to the RV dealer.
  • Picked up the trailer today. The dealer said there was a clip “missing” on the right rear brake to hold the magnet in place, but no other issues were found ($300 for a $1 dollar clip). 40 minutes into my drive home the brakes when out again and very quickly came right back on. That is until I was at my exit. The second I stepped on the brakes the light came on the I lost brakes. Fortunately, this truck is a beast and was able to keep me on the road and the people in front of me from becoming pancakes. But this is dangerous.
I’m getting beyond frustrated at this situation. I called Grand Design RV manufacturer who said I should take the Trailer to an automotive shop next. Are you Kidding me???? I’m considering purchasing an Electric Brake force Meter off Amazon and Drive the truck around for a week to see if I get the error while I drive without the trailer connected. But outside of that I’m running out of ideas.

Any help would be appreciated gang.

I’m going to cross post this to Grand Design RV forum and Ram Forums and will update with links.
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I seriously doubt it's your trailers problem, the same happens with my Jayco Seismic 4212 toy hauler and my 2022 Ram 3500 HD limited dually.

I've begun to look more closely at the truck now, having fixed/replaced the suspect components on the trailer with no or limited results.
 
wforacing96 said:
I seriously doubt it's your trailers problem, the same happens with my Jayco Seismic 4212 toy hauler and my 2022 Ram 3500 HD limited dually.

I've begun to look more closely at the truck now, having fixed/replaced the suspect components on the trailer with no or limited results.
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99% of the time its the trailer…
 
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