seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Engine control unit: encoding > < Engine control unit: replacing

Leon Mk2

Operation sequences
Operation sequences
–  First, print out the control unit identification and, with it, the code for the previous control unit, as follows:
–  Attach fault reader -V.A.G. 1551- (-V.A.G. 1552-) and, via the corresponding “address code” 01, select the engine electronics control unit. (Fault reader: connecting and selecting the engine electronics control unit → Vehicle diagnosis, testing and information system VAS 5051.)
   
The control unit encoding is shown on the display of fault reader -V.A.G. 1551-, for example:
–  Print out the control unit identification pressing Print on the fault reader.
–  Press →.
–  Press 0 and 6 for the function “End transmission” and confirm the entry with the Q button.
–  Switch off the ignition.
–  Remove the wiper arms and the air deflector: → Electrical system; Rep. Gr.92
–  Free the connectors from the control unit and remove them.
  
045906019M   1.4l R3 EDC 0000SG   1043 →
Encode          00002          WSC XXXXX
–  Remove the control unit from its support -arrows-.
–  Install the new control unit.
–  Check the previous code and encode the new control unit → Anchor.
–  Adapt the engine control unit to the electronic immobiliser → Anchor.
–  Finally, consult the fault memory of the new engine control unit and, if necessary, clear the fault memory → Vehicle diagnosis, testing and information system VAS 5051.
  N24-0843

Engine control unit: encoding > < Engine control unit: replacing