Troubleshooting Turn Signal Function on 2017 Nissan Titan SV
Products Featured in This Question
Question:
Turn signal for trailer lights not working on 2017 nissan titan sv. I have relays in place and the running lights work but no turn signal either right or left.
asked by: Derrell M
Helpful Expert Reply:
I checked your owners manual and did not find the schematic but was able to find some info online. Behind your glove box, you will need to install 3 relays, 1 brown for running lights and two blue one for each side turn signal. Make sure these are in the correct locations. If you have these relays and the turn signals still don't work, you may need to replace them using the Curt # C57000. If you know the relays are good and still don't have the signals, then I recommend checking the 3 o'clock and 9 o'clock pins of your 7-way using the circuit tester like # PTW2993 for function. If you don't have function, I recommend taking your truck to a dealer to have them help.
If you have signal at your 7-way, then the issue is on the trailer and is usually a ground connection issue. Check the connection at each tail light as the lights often ground through the mounting hardware. The connection needs to be bare metal to metal and free of corrosion or debris.

Product Page this Question was Asked From
Featured Help Information
Miscellaneous Media
Continue Researching
- Q&A: Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work
- Article: Trailer Wiring Diagrams
- Q&A: How to Test Brake Controller without Trailer Connected
- Q&A: How to Hook Light Bar Up to Work with High Beams on Vehicle
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Troubleshooting Right Side Trailer Lights Not Working, Left Side Working Correctly
- Q&A: Trailer Lights Left Side Turn Signal and Brake Lights Not Working
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Q&A: Recommended Tow Wiring Harness for a 2025 Kia Telluride
- Q&A: Troubleshooting Blown Vehicle Fuses Every Time Trailer is Connected
- Article: Testing Trailer Brake Magnets for Proper Function
- Article: Flat Towing Package for 2007-2018 JK Jeep Wrangler and Wrangler Unlimited