ECU - Electronic Control Unit

In terminology of VW-group it's any electronic device, which has been carried out some logic function. Sometimes it looks like nonsens - even simple relay can be called ECU.

The coding of Electronic Control Unit used for explain the ECU where it is and what "neighbours" does it have. Very often on modern cars the coding is crossed with adaptation.

Adaptation of the Electronic Control Unit serves to explain to the ECU with whom and how to talk (If we have started to speak allegories) and serves as storehouse of various adjustable parameters. ( part of memory in the Control Unit which can be changed via internal software )

Measured Values Blocks ( MWB ) – various parameters being inbound or calculated. Considering to value of MWB Electronic Control Unit, trying to "control"... Using of MWB allows you ( if you know the basic parameters ) to find out "close to boundary" or temporarily arising ( intermittent, sporadic ) malfunctions and many other useful things at competent use.


J217_4E_38_01J_1_0503_21_Pinbelegung.htm
J217_4E_38_01J_1_0503_21_RdW_codieren.htm
J217_4E_38_01J_1_0505_21_MWB_lesen.htm
J217_4E_38_01J_1_0603_21_SG-Version.htm
J217_4E_38_01J_2_0503_21_USA_codieren.htm
J217_4E_38_09E_1_0505_21_MW_lesen.htm
J217_4E_38_09E_1_0802_21_Pinbelegung.htm
J217_4E_38_09E_2_0302_21_SG_Version.htm
J217_4E_38_09E_3_0303_21_codieren.htm
J217_4E_38_09E_4_0303_21_codieren.htm
J217_4E_38_09L_1_0505_21_MW_lesen.htm
J217_4E_38_09L_1_0803_21_Pinbelegung.htm
J217_4E_38_09L_1_0803_21_RdW_codieren.htm
J217_4E_38_09L_2_0803_21_USA_codieren.htm

Control unit version

 

Unit number: The part number is adopted from the vehicle system.

e.g. 4E0910156

 

Unit identifier: A text with a system name and the identification of the data level, including the software version, is transferred from the vehicle system.

e.g. VL30 01J 3.0l5V RoW 0030

 

 

Unit coding: Coding value with which the automatic gearbox control unit -J217 is coded.

- Check coding value in test program J217 - Multitronic, coding (Rep.Gr. 38)

 

Workshop code: The 5-digit dealer code is transferred.

xxxxx

 

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