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| Place the new control unit into the retaining frame. |
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| Install control unit connector and lock. |
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| Check the previous coding and code the new control unit → Chapter |
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| Adapt engine control unit to electronic immobiliser → Chapter |
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| Interrogate the fault memory of the new engine control unit and erase the fault memory if necessary -VAS 5051-; → Chapter |
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| Carry out a test drive. |
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| To finish, interrogate the fault memory of the new engine control unit -J248- again -VAS 5051-; Vehicle self-diagnosis, → Chapter |
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