[stari]

The brake controller on my 05 truck only puts out 2.9 volts at max setting (10). This does not activate the brakes on my travel trailer. Is there adjustment that I am not aware of? I used a volt meter to check this but I am not sure if I am doing this right. Does anyone know what this output should be? /ubbthreads/images/graemlins/shrug.gif

Thank you in advance.

 

[BigGreenDiesel]

I assume you were not moving when you did the test? The earlier '05 trucks had a controller that was not programmed to apply the brakes unless you were traveling greater than ~15MPH. There is a new version out now that does not do this....

 

[south_paw]

This should explain it,

2005 F-Series Super Duty Factory Trailer Brake Controller Tips: Diagnosis procedures for the Towcommand system is in the workshop manual, section 206-10, Auxiliary Brake System. All voltage tests sould be made with the controller at the maximum gain setting of 10.0. Brake controller output voltage increases with vehicle speed. In park with the controller fully applied manualy, the output voltage on trucks built before 3-23-05 should be greater than 1-3 volts; after 3-23-05 greater than 10-12 volts. Controller output with the brake pedal is the same for either build dates. Full voltage is only available above 15 MPH. The Towcommand system works in both forward and reverse. Broadcast Message 3286, 4312, 4940.

 

[stari]

Thank you for the information,it saves me a trip to the Dealer.