This function is used to check current soot quantity in the particle filter. When it exceeds a certain limit value (shown in the function) the particle filter has to be replaced.
Test conditions:
Ignition on.
Battery voltage above 12V.
Procedure:
Start the function.
A dialogue box is shown with current soot quantity + limit value for particle filter replacement.
Press "OK" to exit the function.
If the function fails, check the test conditions and repair any faults.