The trailer brake controller that has worked fine for the past five years. Now all of a sudden, my trailer brakes won't operate. I tested the voltage between ground and the trailer brakes at the connection plug at the rear of the truck, and even with no braking applied, there is a constant voltage that pulses between 3 and 3.5 volts. Not sure what this means, but if anyone can tell me what I should try next to diagnose this issue, it would be much appreciated. Trying to understand if there is an issue with the truck itself, or the trailer.
Thanks.
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Monday, July 1st, 2019 AT 9:58 AM