Troubleshooting Prodigy P3 that Doesnt Turn On
Question:
I get power from the connector when the lights are on or the brake is depressed, but not continuously where the black Power wire is supposed to connect. Shouldn’t there be power there all the time even without a trailer connected? I hook up a volt meter and get nothing from that unless the key is on and I turn the lights on and it is from the smaller ports where there are four in a row. Nothing from the larger port where the black wire is supposed to make connection. I checked the fuses, there are two 30 amp fuses and a relay marked “towing”. All are good and in the correct slots.
asked by: Larry
Helpful Expert Reply:
Are you using the # 3041-P adapter? It's the correct one for your 2018 Toyota 4Runner. Test the connector under the 4Runner's dashboard with a circuit tester, like part #PTW2992, to test for power. If there's no power start by checking the fuses.
If there's power at the plug reconnect the harness to the vehicle and test the pins on the other side of the harness. Check the pins at all the connectors and make sure none are bent. They're fairly thin so they get bent pretty easily. They might just not be making contact with one another.
If you're getting power all the way through the harness but the controller still isn't powering on then the controller itself may be defective.
Products Referenced in This Question
Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Toyota
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- Tekonsha
more information >
40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket
- Accessories and Parts
- Wiring
- Circuit Breaker
- 40 Amp
- Pollak
more information >
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 >
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Larry
11/12/2018
I get power from the connector when the lights are on or the brake is depressed, but not continuously where the black Power wire is supposed to connect. Shouldn’t there be power there all the time even without a trailer connected? I hook up a volt meter and get nothing from that unless the key is on and I turn the lights on and it is from the smaller ports where there are four in a row. Nothing from the larger port where the black wire is supposed to make connection. I checked the fuses, there are two 30 amp fuses and a relay marked “towing”. All are good and in the correct slots.