194001661 - E5070 PARTICLE FILTER SYSTEM - FUNCTIONAL DESCRIPTION

The engine management control unit M010 controls and manages the DPF system with the help of 3 special sensors:- downstream particle filter temperature sensor K190;- upstream particle filter temperature sensor K189;- DPF differential pressure sensor K187.Sensor K190 receives an earth signal from the engine management control unit M010 - pin 33 of connector A - and sends the temperature signal to pin 32 of connector A of M010.Sensor K189 receives an earth signal from the engine management control unit M010 - pin 35 of connector A - and sends the temperature signal to pin 34 of connector A of M010.Sensor K187 receives a power supply and an earth signal from the engine management control unit M010 - pin 44 and 37 of connector A - and sends the pressure signal to pin 36 of connector A of M010.The control unit M010 sends, via the C-CAN - pins 83 and 84 of connector A, the signals useful for the display of the warnings lights and messages in the instrument panel E050. The latter, via the C-CAN/B-CAN communication gateway management by the Body Computer M001, communicates with the system - pins 3 and 4 of connector A - managing the signalling for the management of the filter regeneration process (general failure) or by signalling the need to replace the engine oil (insufficient oil pressure).