Troubleshooting Brake Controller Weak Voltage Output at 7-Way Pin
Question:
Hello, I have recently installed new trailer brakes on a single axle pop up trailer and they do not seem to be strong enough to stop trailer, even with gain maxed out. Brakes were adjusted correctly and tested while jacked up, at which point they seemed to be quite strong. Brake controller is a Tekonsha P3 and I have noticed through troubleshooting function of that particular controller that I am only getting 10v when manual slide is fully engaged. I have confirmed this by testing brake control output pin at rear of vehicle with multimeter. Could this be an issue with the controller itself, or is it perhaps a vehicle wiring issue? Any help would be much appreciated. Thanks
asked by: Sean B
Expert Reply:
You have definitely done a great job narrowing down the issue. Because you have adjusted the brake assemblies and tested the manual slider output at your 7-way, we know there is a voltage issue. This can be from a weak ground connection or a power output issue. I recommend testing the blue output wire from your P3 # 90195 about 6 inches from the back of the controller to determine if the controller output is the issue or if it is in the vehicle wiring. If you need to replace that wire you can simply run # 10-1-1 from the output to the 5 o'clock pin of your 7-way.
Products Referenced in This Question
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
Product Page this Question was Asked From
Dexter Electric Trailer Brake Assembly - 10" - Right Hand - 3,500 lbs
- Accessories and Parts
- Trailer Brakes
- Electric Drum Brakes
- RH
- 3500 lbs
- Brake Assembly
- Manual Adjust
- 10 x 2-1/4 Inch Drum
- Dexter
more information >
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