This function is used to burn soot particles in the particle filter via the engine control unit (ECM).
Important!Burning of soot particles (regeneration) shall be run outdoors. If that is not possible, the particulate filter shall be replaced.
Note:
Check the inlet system for leaks and damage.
Check the injectors.
Check the soot amount in the particulate filter:
At 19 g of soot in the particulate filter, during highway driving the engine control unit (ECM) starts burning of soot particles in the particulate filter.
At 24 g of soot in the particulate filter, during normal driving the engine control unit (ECM) starts burning of soot particles in the particulate filter.
At 30 g of soot in the particulate filter, a text message is sent to the combination instrument (DIM).
At 38 g of soot in the particulate filter, the engine control unit (ECM) cannot start burning of soot particles in the particulate filter.
At 100 g of soot in the particulate filter, this service function cannot start burning of soot particles in the particulate filter.
Tip: The differential pressure in the particulate filter can also be used as an indicator of soot amount. Normal value at idle is between approx. 3 hPa and 20 hPa. Burning of soot particles can only be performed if the differential pressure in the particulate filter does not exceed 100 hPa at idle. If the differential pressure is above 100 hPa the particulate filter shall be replaced.
Test conditions:
Engine on for at least 5 minutes.
Coolant temperature at least 45 °C.
Engine oil temperature at least 30 °C.
Fuel temperature max. 80 °C.
No pedal may be activated.
No error codes for coolant temperature.
No error codes for temperature sensor particulate filter or temperature sensor catalytic converter.
Procedure:
Check that start conditions (test conditions) are fulfilled.
Select function: "Burning of soot particles".
The burn process starts, after approx. 1 minute the engine speed increases gradually to approx. 4000 rpm.
If the operation failed 'Check test conditions' is shown.
The burn may take up to 40 minutes, when the burn is done the engine rpm returns to normal idle.
Then press OK to exit the function.
An on-going regeneration can be aborted at any time by pressing down the clutch pedal or the brake pedal.