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_4D_37_01L_1_0901_21.htm
J217_4D_37_01V_1_0901_21.htm

Coding table A8 1994,

Automatic gearbox control unit 01V

 

Coding Market Engine Drive Model year

 

00000 RoW All engines without electronic throttle FWD/Quattro All

and additionally for

2.5l TDI engine, 110 KW,

EU2, with electronic throttle

 

00000 USA/ Without electronic throttle FWD/Quattro up to and including MY 2001

Canada and additionally for

2.5l TDI engine, 110 KW,

EU2, with electronic throttle

 

KAll the following codes do not apply to vehicles with 2.5l TDI engine, 110 KW, EU2, with electronic throttle

 

00001 RoW With electronic throttle Quattro All

00002 USA/ With electronic throttle Quattro up to and including MY 2001

Canada

 

01002 USA/ With electronic throttle Quattro from MY 2002

Canada

 

00003 RoW With electronic throttle Front WD All

 

00004 USA/ With electronic throttle Front WD up to and including MY 2001

Canada

 

01004 USA/ With electronic throttle Front WD from MY 2002

Canada

 

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