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Vehicles with anti-theft secured engine control unitJ623 > < Engine control unitJ623

Polo Mk5

Removing and installing engine control unitJ623
Removing and installing engine control unit -J623-
If you wish to renew the engine control unit, connect → Vehicle diagnostic tester and carry out guided function „Renew control unit“.
–  Switch ignition off.
Removing
   
–  Release connectors from engine control unit and pull off.
  S10-0111
–  Press clips -arrows A- outwards and pull control unit out to side -B-.
Installing
–  Insert new control unit and press to left.
–  Connect connectors and lock.
–  If engine control unit has been renewed, clear learnt values and adapt engine control unit → Vehicle diagnostic tester„Guided function“.
–  Read fault memory, rectify any faults and then erase fault memory → Vehicle diagnostic tester„Guided fault finding“.
–  The readiness code must be generated if the fault memory has been erased.
–  Perform road test.
–  Again read control unit fault memory.
  S24-0337

Vehicles with anti-theft secured engine control unitJ623 > < Engine control unitJ623