Troubleshooting Hayes Engage Trailer Brake Controller Displaying Code CL

Question

Question:

How to cancel CL Nd why it is showing before running idu ?

asked by: Ranjit M

0

Expert Reply:

My technical contact at Hayes said their Engage Brake Controller # HA81760, the item you referenced in your question, could display the error code CL (current limit) if the trailer's brakes are trying to draw more current than the controller is intended to deliver. This controller is designed to power up to 6 brakes (2 each on three axles).

If you are not exceeding the number of brakes that can be connected then chances are that there is a short in the brake circuit that is allowing excessive power to be drawn from the controller. Check all of the wiring on the trailer's brake circuit looking for any signs of damage such as a pinched wire or a wire rubbing on the frame or other parts of the trailer.

I also linked a couple of troubleshooting articles to assist you.

expert reply by: Adam R

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Answer 1

The overload warning you are seeing indicates that the P3, #90195, detects an excessive current overload condition during operation. This means that there is most likely a short in the brake output wire. The P3 has diagnostic troubleshooting…

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Answer 2

All of the symptoms you are describing lead me to believe there is a ground problem somewhere, even on the trailer. A weak ground connection can show up with some trucks and not others, we have seen it before. The first step I would take is to…

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Answer 3

Brake controllers such as #C74VV will have constant power once installed. They need to have constant power otherwise they would reset every time you turned off the vehicle. Brake controllers have what is basically a sleep mode. After a certain amount…

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Answer 4

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Answer 5

To determine why you do not have any power on the blue brake output wire, I recommend starting at your brake controller. First, make sure the brake controller is on and receiving power. Most brake controllers have 4 wires, blue (brake output to…

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Answer 6

If you check out the attached instructions for the Curt TriFlex Trailer Brake Controller #C24VV you can see that the OL code you are getting means that there is an "Overloaded output circuit, trailer brake system fault". Whichever…

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Answer 7

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 8

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 9

I would love to help you upgrade the suspension on your Twilight 2800 travel trailer. The MORryde Rubber Equalizers for Tandem Axle Trailers #MR87ZR that you referenced are a great solution but we do need to double check a few things. First is that…

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Answer 10

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

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Answer 11

The correct replacement master cylinder kit we have for your Demco setup is the part #DM5918 which comes with the lock out replacement.

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Answer 12

If your current springs have 5 leaves then going to a 7 leaf spring will increase the height of the trailer a little and make the trailer more susceptible to sway. Regarding capacity if you go with springs rated higher than what is required it will…

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