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Troubleshooting Titan BrakeRite Electric Over Hydraulic Trailer Brake Actuator-Won't Build Pressure

Question:

So, have the actuator, and have used this on my large boat trailer for years. Have a 2011 Dodge Ram with integrated brake controller, that I have unplugged, and use a Tekonsha brake controller, plugged into the factory harness. Had trailer built in 2012, and have used it with no issues until this year. Suddenly when first braking, or manually actuating the controller, the pump will spin up, but not build pressure. Release and reapply/reactuate, and it spins up and builds the requested pressure. Thought it was an actuator issue, and purchased a new one. Have the same issue with the new one. Tried new trailer wiring, same issue. Have the same issue using the after market controller, or the factory controller? Friends truck plugged into trailer, works as expected, every time? So, it about has to be something with the truck wiring? Both controller get the same result. It will work every time you cycle it once, then recycle, until you let it sit for a 10 or 15 seconds, then it wont pressure up again. Seems like a relay kind of issue? Any thoughts? Jason

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Expert Reply:

I spoke with my contact at Tekonsha, who is doubtful the controller is the issue. The voltage from the controlleer that's sent to the actuator is very minimal, it's just telling the actuator when and how hard to fire. The actuator is actually powered by the 12 volt auxiliary circuit from the 7-way, which delivers the power that actually runs the actuator. Since the controller will cause the actuator to cycle, and using a different truck seems to solve the problem, it tends to point the finger at the 12-volt accessory circuit. I'd recommend that you check to see that you're getting nearly 12 V coming into the actuator.

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Mike L

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