7
Diagnostic functions
Air leaks
Hook up shop air to the TRAILERteck unit
Hook up the unit to the semi-trailer
o
Emergency
o
Service
Turn on the EMERGENCY function
Allow the pressure to stabilize
Turn on the SERVICE function
Allow the pressure to stabilize once more
Shut off the manual entry valve to prevent the air from flowing into the device and the trailer.
Since the device is air tight, a pressure drop on one of the two the pressure gauges means an air leak in
the corresponding air circuit of the trailer.
Electrical problems
The LED screen flashes for a few seconds when the device is turned on. While it flashes, the screen displays the
battery voltage. If the device is used with our CV4501 power converter / charger, and the CV4501 is plugged into a
120V outlet, the display shows the voltage given by the CV4501.
When the LED screen stabilizes, the amperage draw is now displayed. The amperage draw can help find electrical
problems such as faulty connections or corrosion. Electrical problems have a tendency to create resistance, which
generates heat, which then causes the amperage draw to rise slowly.
It works as follow:
Activate all the electrical functions (lights #1 to #6 on the control panel)
Wait for approximately one minute for the current draw to stabilize
If you see a continuous but slow increase in the amperage draw, 0.1 Amp at a time, there might be an
electrical problem. If this is the case:
o
Turn off all the lights on the device.
o
Isolate the problem by bringing the lights on individually until you find out in which electrical circuit
the problem is located.
Short circuits:
If a short circuit is found in one of the activated functions, the corresponding light will blink on the control panel. At
the same, a sound signal will be heard until the function is deactivated or the short circuit fixed.
Ground problem:
If there is a ground problem on the trailer, during the inspection, the TRAILERteck device will exhibit unpredictable
behaviour. That happens when the activated functions on the trailer don't match the signals sent by the remote.
The TRAILERteck device will not solve the ground problem; it will only help find it. To carry on the inspection,
simply get a good ground on the trailer with the alligator clip that comes with the device.
