Delphi CRD 3.20 / DCM 3.5 Ecu Opening

How to open Delhi Crd 3.xx ecus from Mercedes. Usually they can be done via OBD perfectly but if you need eeprom and mpc you must read in boot mode. After opening i realised my ktag wont read this in boot with dw 6.070 . It needs lastest update fw 7.001 First of all, it is worth clarifying why Delphi control units installed on the Mercedes-Benz group apparently have two nomenclatures. It is necessary to say that Delphi uses the DCM3.5 code only to refer to the generation. It can be compared to the EDC17 abbreviation by Bosch. This information is not shown on the control unit tag, where on the contrary it is possible to read the code CRD3.xx plus the type of injectors in use. PIECOTEC for piezo-electric injectors, and SOLENOID for traditional inductive-control injectors. If we continue with the previous correlation with Bosch, they can be compared to the EDC17CP and EDC17C codes. Remember that CRD3 and the following two digits represent the nomenclature used by the manufacturer Mercedes-Benz and not by Delphi. Characteristics of ECU Delphi CRD3.xx Common Rail Direct-injection 3 .xx We should spend some words more on the meaning of the last two digits, generically represented with letters xx. They refer to the specific version of the Delphi ECU. Like EDC17CP46 or EDC17CP57 and EDC17C66. The ECU mounted on the vehicle we have tested is a CRD3.10 SOLENOID.