OL Overload Message on the Draw-Tite I-Command Trailer Brake Controller

Question:

I have a problem when testing the brakes with the pedal I have 10.5 volts when I use the manual override on the controller I get OL overload short. Does this mean my controller is not good? Thanks

asked by: Mike

Expert Reply:

The OL (overload) message you are getting on your Brake EVN # TK63VR could be a result of either a short in the brake controller or a short in the vehicle/trailer wiring. In order to test the brake controller you will want to sever the blue wire 6" back from the unit and test it using a circuit tester like part # ALL640595 while the manual override is engaged. There should only be power when the manual override is engaged. If there is power without the manual override engaged then the controller is faulty and will need to be replaced for which I recommend the Tekonsha Prodigy P2 # 90885.

If the controller tests good then you will need to move onto the wiring for both the vehicle and trailer. I would first start off by cleaning both of the trailer connectors. You will then need to trace the blue brake output wire from the brake controller all the way back to each assembly while checking for frays or shorts. If none are found then you may just want to run an entirely new wire with part # 10-1-1.

expert reply by: Conner L