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Mar 18, 2012 | 06:53 PM

irydhd

Thread Starter

Freshman User

Joined: Apr 2010

Posts: 28

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default trailer message

When I plug in the trailer wiring to the truck. Big seven point one. I get default trailer on the screen. That would mean something wrong with trailer wiring. Well I plugged in trailer and all lights work as they are supposed to. Maybe brakes arent working right?

Mar 18, 2012 | 07:13 PM

Dim Sum

Fleet Mechanic

Joined: Jun 2011

Posts: 1,865

Likes: 34

From: Annandale, VA

If you are getting a fault code when you plug in your seven pin connector, you have a problem.

Now, all of your lights work. Can you plug in your trailer without hitching to the truck? Do the lights work then? If not, then you have a grounding problem. If they do work, then I'd move to your brakes.

Check all of your brake wiring. Make sure each connection at the wheels are solid. Lots of time the scotch block connectors come loose and this is your problem.

Also check your plug. Make sure all of the wires haven't come loose.

Lastly...if all of your wiring is perfect and grounded, you could have an electromagnet bad, but that would be the last thing I'd consider. Most likely, a loose connection for your brakes.

Mar 18, 2012 | 07:35 PM

juneau76

Cargo Master

Joined: Sep 2007

Posts: 3,049

Likes: 1

^^What he said.

Mar 18, 2012 | 07:55 PM

j.grif

Elder User

Joined: Dec 2010

Posts: 730

Likes: 9

From: plymouth mi

I think that you have to give your trailer a name in the imformation center, default doesent mean theres a problem, it means that the controller has no starting place for trailer brake gain etc. just a guess, but I think thats how it is supposed to work.