Nov 26th "freightliner"

You can identify the problem of the freightliner with the scan tool. I found a few codes.Engine 1 108 Barometric pressure sensor.
-voltage above normal or shorted high.
-no count.
Brakes powerunit 5 wheel sensor ABS axle 3 left
-current below normal or open circuit.
-no count
Brakes 11 pressure modulation valvle ABS axle 3 left.

The switch turns on and off to give a signal. It turns off for a bit longer then cycles 3 more times and does two long off cycles which is the top dead center. the first on is to let it know that TDC is coming up.

I thought it was pretty cool to be a able to see everything like this. So simple and i bet in the future you will be able to tell the computer to sit at TDC and it will and we will have plug ins on every sensor without have to unhook anything.