56
Figure 5-40
Sample BMS Screen 8
5.8 Diesel Particulate Filter (DPF) Service
The DPF function allows you to carry out numerous functions to the Diesel
Particulate Filter system. The tool will manage DPF regeneration, DPF
component replacement teach-in and DPF teach-in after replacing the engine
control unit.
The ECM monitors driving style and selects a suitable time to employ
regeneration. Cars driven primarily at idling speed and low load will attempt to
regenerate earlier than cars driven with higher loads and at higher speed. For
regeneration to occur, a prolonged high exhaust temperature must be obtained.
In the event that the vehicle has been driven in such a way that
regeneration is not possible, a diagnostic trouble code will be registered, DPF
light and “Check Engine” indicator will display. A service regeneration can be
performed using this tool.
Before carrying out a forced DPF regeneration, check the following items:
The fuel light is not on.
No DPF-relevant faults are stored in system.
The vehicle has the correct spec engine oil.
The oil for diesel is not contaminated.
IMPORTANT
Before diagnosing a vehicle and attempting to perform an emergency
regeneration, it is important to obtain a full diagnostic log and read out relevant
measured value blocks.
NOTE
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