What Do the Codes Displayed on the Primus IQ Mean

Question:

Explaination of codes on display

Expert Reply:

After installing your Tekonsha Primus IQ Trailer Brake Controller # TK90160 you should see the following two-digit display: n.c. which means "power to brake controller without trailer connected." This displays for 15 seconds then changes to two dots ( . . )

With the trailer connected you will see .c displayed which means "boost feature not engaged," or .c. for "boost feature engaged." A display of b.1, b.2, or b.3 shows the boost level setting. See the chart at right of typical boost settings.

A two-digit display will show the power output. So 5.4 denotes the voltage output to the electric brakes. The range is 0.0 to 13 volts.

The display .r means reverse.

A blank display means there is power to the brake controller but the display is in power saving mode (no motion or activity for at least 15 minutes).

Take a look at the troubleshooting chart at right which explains the error codes. I have also included the installation instructions which contains more information about the brake controller display.

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