Troubleshooting OL and SH Error Codes on Tekonsha Primus IQ Trailer Brake Controller # TK90160
Question:
works okay for the first few seconds of braking, then goes to oL then to SH code, after awhile will start operating again with the same problem. please advise me of the most likely areas a bad connection could be or maybe its the controller? thanks
asked by: Leon H
Expert Reply:
Both the OL (overload) and SH (short) error messages on your Tekonsha Primus IQ Trailer Brake Controller # TK90160 tend to suggest that either your trailer has too many brakes for the controller (6 are the maximum) or that there is a problem in your trailer's brake circuit wiring. You can start by inspecting both the vehicle and trailer connectors for any signs of corrosion or trapped dirt that could cause two circuits to become bridged together. Check both sides of each connector and clean/replace as needed.
Also check the trailer's entire brake circuit wire from the trailer connector all the way along the wiring (looking for signs of cracked or worn insulation) back to each brake assembly. If the brake circuit wire has any damage this could cause a short that would lead to the overload and short circuit error messages. Repair or replace any damaged wire.
If no wiring problems are found you can test the brake magnets themselves by following the procedure outlined in the linked article. You will need a multimeter like # PT89ZR. If you do find your magnets are worn we offer replacements that can be viewed on the included link.
Products Referenced in This Question
Digital Multimeter with 42" Long Test Leads - LED Display
- Electrical Tools
- Testers
- Multimeter
- Yellow
- Performance Tool
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Product Page this Question was Asked From
Tekonsha Primus IQ Trailer Brake Controller - 1 to 3 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 3 Axles
- LED Display
- Up to 90 Degrees
- Tekonsha
more information >
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