|BOSCH DDE4 TD4 - System Overview|
|Quite a sophisticated Diesel Engine management system ECU. Manufactured by Bosch, this ECU is most often referred to in BMW terminology as version 4.0 of its DDE (Digital Diesel Electronics) series. However in Bosch terminology circles the physical ECU itself can often be denoted having some sub suffix of the EDC (Electronic Diesel Control). Being a flash based ECU with a huge memory the entire code that controls its operationally and functionality including its self diagnostic capability is determined by whatever version of software is programmed into it. This means that although the ECU may be physically the same as that used in other applications such as the TD6 Range Rover, dramatic changes in the communications and the coding mean that different applications require different modules. This module is specifically written deals with the ECU when programmed to suit the small four cylindered Turbo dies engine found in the TD4 Freelander introduced for 2001 onwards up to present day and a small variety of similarly aged Rover and MG vehicles.
Although it is a modern enough ECU to fully support the limited degree of information and fault codes provided for by enforced OBDII compliance, there are of course many more fault codes, functions and features that this module gives access to including security link learning and re synchronization.
|SM036 - BOSCH DDE4 TD4 - System Help file|
|BOSCH DDE4 TD4 - Known Fitments|
|Vehicle makes, models and variants known or believed to be using this vehicle system, required diagnostic lead and degree of known compatibility.
|BOSCH DDE4 TD4 - Physical Details|
|BOSCH EDC TD4 - Pin Outs|
|Details of the pin usage for the ECU connector(s).
|1||MAF sensor supply|
|2||MAF sensor signal|
|3||MAF sensor earth|
|9||Fuel pressure sensor supply|
|12||Glow plug control|
|14||Boost pressure sensor supply|
|15||Boost pressure sensor signal|
|16||Boost pressure sensor earth|
|19||Speed signal screen earth|
|20||Fuel rail pressure sensor earth|
|23||Boost control solenoid valve supply|
|33||Fuel rail pressure sensor signal|
|35||Fuel rail pressure sensor supply|
|38||Fuel Pressure regulator|
|41||Oil pressure switch|
|50||Charge Check alternator|
|52||Fault status glow plug relay|
|SM036 - BOSCH DDE4 TD4 - Diagnostic Capabilities (Read Fault Codes)|
|Reads the fault code memory. The ECU can self detect up to 25 different categories of problem with itself, its wiring and its associated sensors, storing the respective code if it detects any malfunction or reading outside of pre defined acceptable limits. Not all stored faults may cause the fault warning lamp to illuminate.|
|SM036 - BOSCH DDE4 TD4 - Diagnostic Capabilities (Clear Fault Codes)|
|Clears the fault code memory.|
|SM036 - BOSCH DDE4 TD4 - Diagnostic Capabilities (Settings)|
|Values, configuration settings, and other stored information which can be read from the ECU, edited and then rewritten back. Read settings can also be stored as a standard HTML page for reference. These pages can then later be re loaded and re written back to the ECU. Please note that some values may be read only due to the fact that they are supplied from the ECUís ROM or are internally calculated.
HISTORY RECORDS 1-12: There are 12 history records storing information related to the programming of the ECU.
|SM036 - BOSCH DDE4 TD4 - Diagnostic Capabilities (Inputs)|
|Realtime live display of the information the electronic control unit of the selected vehicle system is currently deriving from its input sensors.
|SM036 - BOSCH DDE4 TD4 - Diagnostic Capabilities (Outputs)|
|Choice of outputs that can be tested. Each output has an ON and OFF choice. Click on the ON link to start the test and on OFF to end.
|SM036 - BOSCH DDE4 TD4 - Diagnostic Capabilities (Other)|
|Function that can be performed.