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Ford Truck Club Forum > FORD F-250 | F-350 SERIES | SUPER DUTY > 2011-2016 Ford F250 | F350



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  #1  
Old September 2nd, 2014, 04:32 PM
billc's Avatar
billc billc is offline
 

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Default 2015 F-350 SD PowerStroke Trailer Brake Issue

Hi.

I recently bought a 2015 F-350 Super-Duty PowerStroke with the full towing package. I then bought a 2014 Dutchmen 25-foot travel trailer, bumper-pull (new...just purchased a year later).

Everything is great with the combo except I cannot get the trailer brakes to engage at all when towing. They do engage when I pull the break-away switch plug out so the trailer dealer says that proves that the trailer brakes are fine. They're electric and they either work or they don't. Period.

I've had the truck into the dealer, too, and it looks good in all of the tests that they performed.

So both dealers claim that the braking system is working as designed yet I still minimal (if any) trailer braking.

Details:

1. I hooked up the trailer to the truck ready to tow (electric and mechanical).

2. Truck LCD shows "Trailer connected" or the like.

3. I set the Gain to 6, as instructed in the owners manual.

4. The pressure is set to the default: Low.

5. I get the truck rolling to about 25mph and apply the pincher switch: Nothing.

6. I increase the gain, step-by-step, until it's max'd out at 10. Still no response from the trailer brakes (or, if there is, it's so minimal that I cannot sense it). Certainly no squealing of the brakes on the pavement as there should be if the gain is set too high.

7. Keep adjusting things until the pressure setting is on High. Same results.

So now I have two dealers claiming it's not a problem with their equipment but I still have a truck-trailer combo that's not getting any trailer brake application at all.

I read in another forum's posts that it was a blown fuse but surely a dead circuit would have shown up on the dealer tests (he said, hopefully).

Another post said to push the electrical connector into the socket really hard but I've been doing that without success, too.

I just read one that said he found success by prying the metal contacts out a bit inside the truck's electical socket so they got a good contact. I have't tried that yet but will this evening when I get home from work.

Other than smashed contacts in the plug, any other ideas of how to get the truck and trailer talking?

Thanks!

bc
  #2  
Old September 2nd, 2014, 05:25 PM
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JSoko JSoko is offline

 

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Default

??? have you hitch it up and taken truck and trailer to the dealers

here's what I would do
it involves a test light

read this first - http://www.fordtruckclub.net/forum/s...ght=test+light

check the contacts on the truck with the brakes off then on make a note of which contacts are hot

now plug the trailed in and check the connector wires on the trailer

if red was hot it should be hot on the trailer wiring do this to each one and so on
that way your trouble shooting should show if there is a connection or not
keep notes of the wires and there status
it may be that you can get power near the hitch but I would also go further back on the trailer to see if you still have power
now you have something to hash out with the Dealers


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Last edited by JSoko; September 2nd, 2014 at 05:29 PM.
  #3  
Old September 10th, 2014, 03:57 PM
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Ground issue on trailer?

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2015 , brake , f350 , issue , powerstroke , trailer

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