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_42_34_086_1_0308_21_codieren.htm
J217_42_37_086_1_1006_21_Ersetzen.htm
J217_42_37_086_3_1106_21_MWB_lesen.htm
J217_42_37_086_6_0107_21.htm
J217_42_37_086_7_0107_21.htm
J587_42_37_086_3_0107_21.htm

J217 - Automatic gearbox control unit

 

The control unit is located behind the right side seat beneath the parcel shelf.

PQCaution!

For measurements on the wiring harness, use test box VAG 1598/22 or VAG 1598/42+1598/48. If no test box is available, only matching adapter leads from adapter set VAG 1594 may be used for measuring. Any other test leads or probes would damage the contacts in the connector!

 

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