Golf Mk4
General to self-diagnosis
Connecting fault reader V.A.G 1551 and selecting engine electronics control unit
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Special tools, workshop equipment, testers, measuring instruments and auxiliary items required
Note: The vehicle system tester V.A.G 1552 can be used instead of the fault reader V.A.G 1551, however a print-out is not possible. All functions of V.A.G 1551/1552 can also be carried out with the new tester V.A.S 5051. Connecting VAS 5051 . |
Test conditions |
Work sequence |
After the fault reader has been connected:
Notes:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
=> Fault reader operating instructions
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→ Indicated on display: |
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* Appears alternately
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→ On the display the control unit identification and coding are displayed, e.g.: |
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Notes: Replace control unit if the control version displayed does not correspond to the vehicle => Page 24-114 . An incorrectly coded engine control unit leads to:
If the coding differs from the vehicle version, then:
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→ Indicated on display: |
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