Trailer disconnect message

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May 28, 2020 | 11:06 AM

Spantier

Thread Starter

New User

Joined: May 2020

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Trailer disconnect message

Everytime I hit the brake I get the trailer disconnected message. Once I let off the brakes it says reconnected. I also can't actuate the brakes manually. Not sure if it's a ground issue, brake controller issue, or wiring issue. Any ideas?

May 28, 2020 | 11:24 AM

ford390gashog

Fleet Owner

Joined: Jan 2004

Posts: 26,007

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From: Brentwood,CA

Normally its a trailer ground issue. Is your trailer actually grounded through the 7 pin? I have seen plenty of trailers that the only ground was the hitch which isn't correct.

May 28, 2020 | 12:44 PM

crewzer

Logistics Pro

Joined: Apr 2000

Posts: 4,334

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From: Mills River

Quote:

Originally Posted by Spantier

Sounds like the brake wiring circuit has a break somewhere. Check fuse for the brake controller, the wiring from the truck to the brakes, and the brake common wiring.

HTH,
Jim / crewzer

May 28, 2020 | 04:24 PM

RV_Tech

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Joined: Jan 2010

Posts: 10,060

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From: Bristol, TN.

First simple steps. #1 that a jumper cable and connect the trailer frame to the frame of your truck. If the problem goes away, you have a grounding issue. #2 Make sure the seven pin plug on your truck is clean and the connection is good. As a general rule, the brake controller is the least likely problem as is the wiring, other than at the connections.