Should the Hayes Engage Trailer Brake Controller Flash OC Without a Trailer Connected

Question

Question:

Ive just plugged the controller in, but not connected it to any trailer wiring yet. The OCinch is flashing, even when the truck is turned off. I couldnt quite tell from the instructions if this is normal, or if its sensing a problem other than that I havent connected any trailer wiring.

asked by: Tim A

0

Expert Reply:

The OC you are seeing on the Hayes Engage Trailer Brake Controller # HA81760 is saying you have an open circuit. Specifically it indicates there is no trailer connection detected or the controller is connected to a trailer with electric over hydraulic brakes. Since you have not connected the trailer it will flash for a few minutes or until a trailer is connected. There is nothing wrong with the controller and it is acting as it should.

expert reply by: Bud M

0

Answer 1

Most brakes also require a (break-in) period. Dexter says to get up to about 20-30 mph and use the manual override several times. They may also feel weak breaking because it is recommended to let the brakes (seat) into the hub for the first 200…

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Answer 2

There are some common things you can check to determine what is causing the poor braking performance. First, you do not want the trailer brakes to lock up and skid. You want them to be at a point just under that. The resistance of 12-1/4 inch by…

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Answer 3

With the Hayes Engage Trailer Brake Controller #HA81760 the code OC indicates that the controller does not sense an electrical connection to the trailer brakes, or that the trailer has electric-over-hydraulic brakes which do not work with this unit.…

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Answer 4

First of all you are correct that the OC on the Hayes Engage Trailer Brake Controller #HA81760 does indicate an open circuit. This means the controller is not detecting a trailer or it could be connected to a trailer with electric over hydraulic…

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Answer 5

I suggest you first verify that one of the two wires from the brake assembly is solidly grounded to the trailer frame. (It does not matter which one of the two wires from the magnet connects to the brake controller output wire and which one connects…

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Answer 6

Since you did not mention the particular brake controller that you have, I am going to give you some general brake controller information that might help you solve the problem. I am including a link to a FAQ page on troubleshooting a brake…

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Answer 7

A flashing OC message on the Valley Journey HD brake controller means that the trailer brake circuit is lost or intermittent. With no trailer connected, the brake controller might think there is a connection for some reason. It will also do this for…

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Answer 8

I checked the owner's manual for the Hayes Engage Trailer Brake Controller part #HA81760 and found this out for you about the "P" display. The controller is factory pre-set to display mode P (% of maximum power) • During braking…

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Answer 9

The lock up issue you are having shouldn't be related to the Engager Breakaway System part #20099 that you have installed on your trailer. There are other factors to consider when dealing with trailer brakes that lock up. You either have the gain…

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Answer 10

If the rear end of your vehicle sags significantly when the trailer is hooked up then you could have an unsafe condition and your front end and tires will not wear properly. The weight is taken off of the front wheels of the vehicle and can cause…

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Answer 11

It depends on what the brake controller output is set to. If you have the brake controller set to the maximum then there should be about 12 volts at the brake magnets. To see if the brake magnets are drawing the correct power set the brake controller…

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Answer 12

A slight voltage drop between the controller and the magnets is normal. But you will need around 12 volts at the magnets for proper operation. The only way to know the wire gauge is to strip away the insulation and measure just he copper strands. If…

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Should the Hayes Engage Trailer Brake Controller Flash OC Without a Trailer Connected

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