Pilot Brake Controller Still Shows Trailer Connected When Trailer is Unplugged

Question:

My pilot controller is showing connected all the time without the trailer connected. It just started a couple of days ago. All components are working fine other than the .C all the time in the display. Can you help me solve this issue? Cant find help on this one online. Thanks,

asked by: Leon D

Expert Reply:

The problem you are experiencing usually occurs when the trailer connector on the vehicle is corroded or damaged.

Take a look at the pins on your trailer connector. If you can see any green or white corrosion on the pins, there is a good chance that the corrosion has spread to the interior of the connector. The corrosion can cause a small short circuit that is making the controller think that the trailer is connected.

In case you no longer have it, I have provided a link to the install/operating instructions for your brake controller for future reference.

expert reply by: Mike L