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Exhaust system > < Control unit: encoding

Leon Mk1

Engine control unit: renew
Engine control unit: renew
The engine control unit governs injection, throttle control unit, Lambda regulation, ignition, pinking regulation, electrovalve 1 for the activated carbon tank, engine speed regulation through the injectors or the fuel pump relay, and self-diagnosis.
Special tools and workshop equipment required
t  fault finder -V.A.G. 1551- with cable -V.A.G. 1551/3-
Sequence of operations
–  First, print the control unit's identification and along with it, the previous control unit's code, proceeding as follows:
–  Attach the -V.A.G. 1551- (-V.A.G. 1552-). Switch on the ignition and enter “direction code” 01 to select the engine control unit. (Fault finder: Connect and select the engine control unit → Vehicle diagnosis, testing and information system VAS 5051.)
   
Display message; the control unit's identification and the coding appear, for example:
Print the engine control unit's identification by pressing the Print button on the fault finder.
–  Press the button →.
–  Press buttons 0 and 6 for the function “End data transmission” and confirm the entry with the Q button.
  
047 906027    Simos 2.3P    HS7023     →
Encode 04800                   WSC XXXXX
Display reading:
–  Switch off the ignition.
–  Remove the wiper arms and the water box cover: → Electrical system; Rep. Gr.92
–  Release the control unit connectors and remove them.
  
Rapid data transfer                 HELP
Select function XX
–  Release the safety catches -arrows- that secure the control unit.
–  Fit the new control unit and secure with the safety catches.
–  Check the previous coding and encode the new control unit → Chapter
–  Adapt the new control unit to the throttle control unit → Chapter
–  Adapt the new control unit to the electronic immobiliser → Chapter
–  To finish, consult the new engine control unit's fault memory, and if necessary, erase it.
  N24-0843

Exhaust system > < Control unit: encoding