What Does NC on Primus IQ Brake Controller Mean When Starting Vehicle and Then Disappearing?

Updated 03/28/2019 | Published 03/27/2019

Question:

Brake controller shows NC when starting vehicle then goes blank. Pushing button used to show something. What the code nc?TK90160

asked by: Ken J

Expert Reply:

The NC on your Tekonsha Primus IQ Brake Controller # TK90160 is simply showing power to the brake controller without a trailer connected. It should do this and display for a 15 seconds before going away. The NC means the brake controller is seeing no trailer connection.

The button being pushed should not show anything when a trailer isn't connected. When a trailer is connected it would give you a power output range between 0.0 volts and 13 volts. I've attached a photo of part of the owners manual and have attached the complete manual labeled installation details to assist.

expert reply by: Jason S