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Engine control unit with anti-theft protection: removing and fitting > < Engine control unit

Leon Mk1

Removing and installing engine control unit
Removing and installing engine control unit
To replace the engine control unit, connect the → Vehicle diagnosis, testing and information system VAS 5051 and initiate the guided function “Replacing control unit”.
Removal:
–  Switch off ignition.
–  Remove the windscreen wiper support arms and the cover for the water channel: → Electrical system; Rep. Gr.92
–  Remove plenum chamber bulkhead → Bodywork - fitting work; Rep. Gr.50
   
–  Remove the securing bolts -1- and remove the cover plate -2-.
  N24-10055
–  Unlock front connector -1- from engine control unit and pull it off.
–  Lift the lock slightly -2-, by levering it.
–  Then remove the engine control unit from its attachment pushing in the -direction of the arrow-.
–  Unlock rear connector from engine control unit and pull it off.
Fitting
–  Connect the rear connector to the engine control unit and lock.
–  Slide the engine control unit onto the retention plate.
–  Now connect the front connector to the engine control unit and lock.
–  Fit the connector cover plate.
  N24-10056
–  Tighten the bolts -1- to 10 Nm.
–  Install plenum chamber bulkhead → Body repairs; Rep. Gr.50
–  Fit the windscreen wiper support arms and the cover for the water channel: → Electrical system; Rep. Gr.92
–  When replacing the engine control unit, erase the self adapting values and adapt to the engine control unit → Vehicle diagnosis, testing and information system VAS 5051“Guided function”
–  Consult fault memory; if necessary, repair any faults and then erase fault memory → Vehicle diagnosis, testing and information system VAS 5051“guided fault finding”
–  After deleting the fault memory, the conformance code must be generated.
–  Take vehicle for a test drive.
–  Interrogate the control unit fault memory again.
  N24-10055

Engine control unit with anti-theft protection: removing and fitting > < Engine control unit