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Self-diagnosis for the Motronic system
Technical self-diagnosis data
Features
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◆ The data transfer between control unit and vehicle diagnostic, testing and information system VAS 5051 or fault reader V.A.G 1551 takes place in "Rapid data transfer" mode.
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◆ The fault memory is a non-volatile memory and thus independent of the power supply.
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◆ Stored faults are displayed by calling up the fault display .
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◆ The fault memory must be erased once the faults have been eliminated => Page 01-14.
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◆ On vehicles which conform to emission standard EU III: If the engine control unit detect faults which result in deterioration of exhaust emissions, these faults will be indicated by illumination of exhaust gas warning lamp (fault lamp for self-diagnosis -K83). Explanations on this lamp
=> Page 01-3.
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◆ Faults related to EPC are additionally indicated by the warning lamp for the electronic throttle control ("EPC warning lamp") which is situated in the dash panel insert.
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