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Coding engine control unit > < Renewing, coding and matching engine control unit

Golf Mk4

Renewing engine control unit
Renewing engine control unit
Special tools and workshop equipment required
t  Fault reader -V.A.G 1551- with diagnosis cable -V.A.G 1551/3-
Procedure
–  First print out the control unit identification and thereby the previous control unit coding as follows:
–  Connect fault reader -V.A.G 1551- or vehicle system tester -V.A.G 1552- and select engine electronics control unit with “address word 01”; connect fault reader and select engine electronics control unit.
   
The fault reader -V.A.G 1551- display will show the control unit coding, e.g.:
–  Print out the control unit identification by pressing the fault reader Print button.
–  Press → button.
–  Press buttons 0 and 6 for function “End output” and confirm entry with Q button.
  
038906018D 1.9l R4 EDC G00SG 1817     ->
Coding 0002                   WSC XXXXX
Indicated on display:
–  Switch off ignition.
–  Remove windscreen wiper arms and cover for plenum chamber → Electrical system; Rep. Gr.92
–  Release connector from control unit and pull off.
  
Rapid data transfer                 HELP
Select function XX
–  Press control unit to the right and pull out.
–  Insert new control unit and press to the left.
–  Check the previous coding and code the new control unit
–  Adapt engine control unit to electronic immobilizer → Chapter.
–  Then subsequently read fault memory of the new engine control unit and clear fault memory if necessary.
  N24-0713

Coding engine control unit > < Renewing, coding and matching engine control unit