Troubleshooting No Green Light on Tekonsha Voyager Brake Controller

Question

Question:

My green light on top of controller doesn’t light up when hooked up to my trailer. Just bought this controller from y’all a couple weeks ago. I ve checked all fuses and connections on truck.

asked by: Johnny F

0

Expert Reply:

The green light on top of your Tekonsha Voyager Trailer Brake Controller # 39510 indicates that a trailer is connected to your vehicle. If this light is not turning on when connected to a trailer there are a couple things, you can check.

I first recommend inspecting both the vehicle side and trailer side connectors for any debris or corrosion built-up around the pins that needs to be cleaned out. If the connectors look good, you will next want to test the brake output pin on the vehicle side 7-Way. Use a circuit tester like # PTW2993 to test the pin at the 5 o'clock position. The load that the tester puts on this pin should trick the brake controller into thinking a trailer is attached, thus illuminating the green light on the unit.

If the green light illuminates, then the problem is likely on the trailer side. You will want to inspect the brake wire on the trailer for any pinched or exposed sections that need to be replaced. Also check the brake assembly wiring to make sure it is in good condition as well.

If you still aren't able to locate or resolve the issue, please let me know and we will continue to troubleshoot!

expert reply by: Chris R

0

Glen

5/8/2024

My teconsha brake controller is working but window doesn’t light up. This makes it very hard to read when adjusting. It’s a teconsha but not voyager.

Chris R.

5/9/2024

@Glen If it's not lighting up at all (but otherwise working correctly), it's likely an internal bulb that's gone out and I'm afraid to say there's not much you can do to fix it on your end. You could try a hard reset (unplug completely from power and let it sit for 10 minutes or so and plug it back in to the harness) to see if that does anything. Otherwise your only option would be to go with a new controller.

Glen B.

5/9/2024

@ChrisR Thanks . Just wondering if I undo the three tamper proof screws to take the back off., can I replace bulb or can I even get a bulb.

Mike L.

5/23/2024

@GlenB Which Tekonsha controller do you have? All the current models use LED's, not bulbs.

See All (5) Replies to Glen ∨

Jeanne

6/16/2024

My green light doesn’t come on. I have power and all lights are working on the trailer but I have no brakes. How do I replace my unit? I have a 2008 tundra truck.

Answer 1

The green light of your Tekonsha Voyager Brake Controller part #39510 is to show that the brake controller senses a trailer being connected. If you can't get the green light to come on plus your brake output pin on your 7-way is reading full…

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Answer 2

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

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Answer 3

According to the troubleshooting guide for the Tekonsha Voyager Trailer Brake Controller #39510 when there is no green light with the trailer connected then that means you either have corrosion on the trailer plug contact or you have a loss of power…

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Answer 4

The Tekonsha Voyager brake controller #39510 will not light up at all unless a trailer is connected. Once a trailer is connected the indicator will be green. Using the manual override or brake pedal will change the indicator to red. If it does not…

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Answer 5

The orange wire you found is the CHMSL circuit. This is the center high mount stop light wire. It is not used by a brake controller so you can tape it up and stow it out of the way. The wires that you will need with be 12 volt power, output to…

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Answer 6

Based on the symptoms you described of constant power being found on the blue brake output wire (even when isolated from the 7-Way) there is a good chance that the Tekonsha Voyager #39510 has an internal short and needs to be replaced. There are…

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Answer 7

Trailer brake controllers like the Prodigy P2 #90885 use a 4-wire hook up. The wire functions and connections are as follows: BLACK wire carries 12V power and connects to the vehicle + battery post through a 20- or 30-amp circuit breaker like…

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Answer 8

The blue wire coming from the brake controller to the trailer brakes is the brake power output wire used to tell the trailer to apply the brakes once given the response from the brake controller. Therefore, you should not have a constant charge to…

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Answer 9

No you should not have constant power on the brake output pin, the blue wire should only have power with the brake pedal depressed in the vehicle or the brake controller manual override is activated. If the blue wire has a constant 12V then it is an…

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Answer 10

You are correct, you should only be getting output when the brake is applied, or the override switch is activated. It sounds like the controller might be bad, but to make sure, you should probably bench test it before tossing it. Use a circuit…

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Answer 11

Assuming that your trailer brakes are properly adjusted, I'd be leaning toward the brake controller as being the problem. The Voyager was a pretty decent controller for its time, but technology has pretty much passed it by. The controller uses an…

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Answer 12

The Tekonsha Prodigy P2 Trailer Brake Controller part #90885 will go into a sleep mode after 15 minutes of inactivity. However, the controller will never completely lose power unless disconnected, even while in sleep mode it will draw power. The…

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Troubleshooting No Green Light on Tekonsha Voyager Brake Controller

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