System test during operation
This function is used to test the retarder's different signals.
Note:
During the test the vehicle should be driven at approx. 30 km/h.
Test conditions:
Engine on.
Procedure:
Start the function.
Check test conditions.
Drive the vehicle at approx. 30 km/h and press "OK".
Stop the vehicle.
Check the status.
Function complete.
If the function fails, check the test conditions and repair any faults.