Troubleshooting Electric Over Hydraulic Brakes Not Activating with a Tekonsha P3 Brake Controller
Question:
I have installed a tekonsha 90195 in my 2008 chevy and found I dont have trailer brakes. I rechecked the wiring under dash all good. I tried to adjust power out put still no brakes, this trailer does have hydraulic brakes and I do have controller set for that .I also tried manual brake lever nothing .
asked by: Stuart W
Expert Reply:
First thing you should do is check the brake output signal of the trailer connector to determine if the problem lies on your 2008 Chevy or on your trailer. I would use a circuit tester like our # PTW2993 for this. If you determine that there is voltage on the brake output circuit and 12 volt power circuit at the connector on your vehicle and your brakes are still not activating then the problem is on your trailer.
Does the actuator cycle on to build pressure when you connect it to your tow vehicle and the vehicle is turned on? If not, then the problem may be that the actuator is not getting the 12 volts it needs to power the unit. Typically, the 7-way of the trailer wiring powers the actuator through the 12 volt circuit. So you will want to check for voltage there as well. I attached a pic of how 7-way is typically wired for you to check out also.
I attached an FAQ article on troubleshooting brake controller installs for you to check out also.
Products Referenced in This Question
Product Page this Question was Asked From
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 >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Compatability of Tekonsha P3 with Hydraulic Over Electric Brakes
- Shop: Brake Controller
- Shop: Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket - Vehicle End
- Video: Pollak Replacement 7-Pole RV-Style Trailer Connector Socket Review
- Q&A: Troubleshooting Prodigy P3 Brake Controller Not Activating Electric Over Hydraulic Brakes
- Shop: Hook Probe Circuit Tester
- Shop: Hydrastar Electric Over Hydraulic Actuator for Drum Brakes - 1,200 psi
- Shop: Brake Line Fitting for Hydrastar Hydraulic Brake Actuators - 1/4"
- Q&A: Comparing the Redarc Tow-Pro Elite vs Tekonsha Prodigy P3 Brake Controller
- Q&A: What Do I Need To Install A Redarc Tow-Pro Elite In My 2020 Chevrolet Silverado 2500
- Q&A: Troubleshooting Light Pulsing on Redarc Tow-Pro Liberty Brake Controller
- Shop: Replacement Redarc Tow-Pro Elite Control Knob Wiring Harness - 3' Long
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional
- Video: Redarc Tow-Pro Wiring Adapter Review
- Article: Trailer Wiring Diagrams
- Q&A: Troubleshooting Electric-Over-Hydraulic Brakes On Horse Trailer
- Q&A: Testing the Hydrastar 1600 PSI Electric/Hydraulic Actuator for Proper Function
- Video: Choosing the Right Brake Controller
- Shop: Trailer Wiring
- Search Results: trailer brake controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Hitch
- Video: Choosing the Right Trailer Wiring
- Search Results: brake controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: etbc7
- Article: Brake Controller Installation: Starting from Scratch
- Search Results: trailer hitch wiring
- Shop: Suspension Enhancement
on Trailer Brake Controller
