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Installing > < Replacing engine control unit

Leon Mk2

Removing
Removing
–  First print out the control unit identification and thereby the previous control unit coding as follows:
–  Connect fault reader -V.A.G 1551- (-V.A.G 1552-) and select engine electronics control unit with the “Address word” 01. When doing this the ignition must be switched on. (Connecting fault reader and selecting engine electronics control unit → Vehicle diagnosis, testing and information system VAS 5051.)
   
The control unit identification and the coding will appear on the display, e.g.:
–  Print out the control unit identification by pressing the fault reader print button.
–  Press the → key.
  
038906013L  1.7l  R4  EDC   30SG   1821→
Coding 00002                   WSC xxxxx
Indicated on display:
–  Press keys 0 and 6 for the function “End output” and confirm entry with the Q key.
  
Rapid data transfer                 HELP
Select function XX
Indicated on display:
–  Switch off ignition.
–  Remove wiper arms and cowl panel: → Electrical system; Rep. Gr.92
–  Release connector from control unit and pull off.
  
Rapid data transfer                 HELP
Enter address word XX
–  Unclip control unit from retaining frame -arrows-.
  N24-0843

Installing > < Replacing engine control unit