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Trailer disconnect message

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Old Mar 19, 2018 | 08:23 AM
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Trailer disconnect message

I’ve read multiple forums but I’m not fixing the issue.
When I connect my trailer the truck will realize it’s connected and give me the message. As soon as I adjust the gain or hit the slider it will tell me it’s disconnected, or about three minutes into the drive it tells me I’m disconnected. The brakes still work, however, even with the message. All lights work properly and wired correctly. What I’ve done:

brand new 7-pin connector and wires. Soldered everything, no change.
cleaned all connectors on the truck and trailer. Shiny as they can be.
Grounded the white trailer brake wire to the frame of the trailer in multiple locations.
brand new ground wire from the brake box on the trailer to the brakes.
Ran another ground wire from the truck frame to the trailer.

Whats weird is that the brakes still work and changing the gain, even when it says trailer disconnected, still makes the change at the trailer. I’m just stumped and getting worked up about the issue and looking for help. Thanks everyone.

 
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Old Mar 19, 2018 | 10:13 AM
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It sounds like an issue with the trailer brake controller itself.

Add a signature in your profile with the truck and trailer details so people don't have to ask.
 
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Old Mar 19, 2018 | 10:33 AM
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Sounds good, will do when I get a moment to figure it out.
Mom driving a 6.7L, 2016 F-250
trailer is a dual axle, single brake, open car trailer
 
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Old Mar 19, 2018 | 11:09 AM
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Trailer has surge brakes.
 
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Old Mar 19, 2018 | 11:41 AM
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Originally Posted by BPofMD
Trailer has surge brakes.
what does this mean?
 
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Old Mar 19, 2018 | 12:27 PM
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Originally Posted by drewsky121

what does this mean?
Here is an explanation of surge brakes: https://traxpowerdolly.com/articles-...urge-brakes-mb

The gist of it is that maybe your surge brakes aren't working now like they used to.
 
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Old Mar 19, 2018 | 01:40 PM
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..or he forgot to pull the reverse pin after previous use.
 
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Old Mar 19, 2018 | 01:43 PM
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Originally Posted by HRTKD
Here is an explanation of surge brakes: https://traxpowerdolly.com/articles-...urge-brakes-mb

The gist of it is that maybe your surge brakes aren't working now like they used to.
based kn that description, these aren’t surge brakes. There’s no pin that I need to worry about and the wiring for these is very simple. Straight from the truck to the brakes
 
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Old Mar 19, 2018 | 01:47 PM
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What trailer do you have?
 
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Old Mar 19, 2018 | 03:01 PM
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Old Mar 19, 2018 | 03:02 PM
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Old Mar 19, 2018 | 03:14 PM
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Originally Posted by HRTKD
What trailer do you have?
see the pictures, it’s just a standard car trailer as far as I know. Single rear axle brake system.
 
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Old Mar 19, 2018 | 03:56 PM
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Originally Posted by drewsky121
As soon as I adjust the gain or hit the slider it will tell me it’s disconnected, or about three minutes into the drive it tells me I’m disconnected.

Whats weird is that the brakes still work and changing the gain, even when it says trailer disconnected, still makes the change at the trailer. I’m just stumped and getting worked up about the issue and looking for help. Thanks everyone.
Changing the gain is something that happens on the truck, without any trailer involvement as far as I know. If all you do is change the gain and you get the disconnect message then leads me to believe that there is something goofy on the truck.
 
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Old Apr 7, 2018 | 08:54 PM
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Check the actual wiring inside drums. Make sure magnets aren’t shot. If the resistance is outside of what’s expected, message your getting will pop up
 
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