| Initiating self-diagnosis |
| Special tools and workshop equipment required |
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| Vehicle system tester -V.A.G 1552 - |
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| Diagnostic cable -V.A.G 1551/3A, 3B oder 3C- |
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| Always check the coding of the diagnosis limit for data bus (Gateway) by referring to the table of codes. |
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| Fuses must be OK in compliance with the current flow diagram. |
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| Battery voltage at least 11 volts |
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| All electrical components switched off |
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