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| Connect the central diagnosis -VAS 5051- or central diagnosis -VAS 5052- with the relevant cable. |
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| Select the function „Guided fault finding“ on the vehicle diagnostic, testing and information system -VAS 5051-/5052. |
When all control units have been read: |
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| Select „Function/component selection“. |
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| Select „01 - Systems capable of self-diagnosis“. |
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| Select „engine control“. |
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| Select „Function or component“. |
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