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.
After carrying out the following repairs
perform the basic setting:
J Replacing automatic gearbox control unit
J Servicing, repairing and replacing
J Removing and installing accelerator
pedal senders -G79/-G185
During basic setting the
starting values for pressure and adaptions are loaded. Signals learned up to
that point (kickdown, Tiptronic switches on steering wheel) are deleted.
The basic setting is
only possible if there are no faults relating to the ABS control unit -J104 or
the gearbox output speed sender -G195 in the fault memory of the automatic
gearbox control unit J217.
November 30, 2012
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