Trailer Brake Disconnected Warning Light -- What does this mean?

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TxCowboy

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Hooked up a small tag along travel trailer just to move it around. I received this RED warning on the DIC -- Trailer Brake Disconnected Warning Light.

What does this mean? Is my brake controller not working? Maybe something wrong with the 7 pin connector? What?
 
AFMoulton

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TxCowboy said:
Hooked up a small tag along travel trailer just to move it around. I received this RED warning on the DIC -- Trailer Brake Disconnected Warning Light.



What does this mean? Is my brake controller not working? Maybe something wrong with the 7 pin connector? What?
Click to expand...



Either the brakes on the trailer are not working, or the connector on the trailer is bad. Probably a ground on the trailer is bad.


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Would low battery have an impact on this warning light? I did note that the interior LED lights inside the trailer did not come on, e.g., low battery charge.

If the break away switch is activated, the emergency trailer brakes would be activated via battery power on the trailer. Maybe this tripped the warning light? Does the 7 pin connector have the ability to check the battery state on your trailer (assuming the trailer you are towing has a battery installed...)?
 
AFMoulton

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TxCowboy said:
Would low battery have an impact on this warning light? I did note that the interior LED lights inside the trailer did not come on, e.g., low battery charge.



If the break away switch is activated, the emergency trailer brakes would be activated via battery power on the trailer. Maybe this tripped the warning light? Does the 7 pin connector have the ability to check the battery state on your trailer (assuming the trailer you are towing has a battery installed...)?
Click to expand...



No, you just have a 12v dedicated power in the 7 pin going to the trailer for that battery and the main battery. That warning light is checking the circuit that should be completed for the trucks brake controller to activate the trailer brakes

I would check grounds on the brakes and wires in the connector on the trailer.


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TxCowboy said:
Would low battery have an impact on this warning light? I did note that the interior LED lights inside the trailer did not come on, e.g., low battery charge.



If the break away switch is activated, the emergency trailer brakes would be activated via battery power on the trailer. Maybe this tripped the warning light? Does the 7 pin connector have the ability to check the battery state on your trailer (assuming the trailer you are towing has a battery installed...)?
Click to expand...



Shouldn't cause the problem you're describing, but a dead battery means no brakes if you lose the umbilical in a breakaway event.


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photonburst

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Like AFM said, cleaning the plug pins and a dab of dialectric grease helped my brake warnings.
 
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