Status test of control for auxiliary brake


This function is used to check that signals from the control for the retarder are received and interpreted correctly by the control unit. A value is shown for every position that the control may assume. The signal from accelerator pedal position and brake pedal switch are also shown, these control when the retarder shall or can be activated. Also shown is the offset above selected speed on the cruise control that the trailer is not permitted to pass during retardation.

If any signal is incorrect, this indicates a fault in the circuit between the control and VECU or defective control.

Test conditions:

Procedure:

  1. Start the test.

  2. Check that status of the controls matches the test.

  3. Finish by pressing "OK".

  4. The function is done.