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Fault table > < Connecting vehicle diagnostic, testing and information system VAS 5051 or fault reader V.A.G 1551 and selecting functions
Motronic injection and ignition system (4-cyl. turbo)
Interrogating and erasing fault memory
Interrogating and erasing fault memory
  • ‒ Connect vehicle diagnostic, testing and information system VAS 5051 (or fault reader V.A.G 1551) and select engine electronics control unit by entering address word "01" ().
    When doing this the engine must be running at idling speed.

Note:

If the engine does not start, turn the engine over for at least 5 seconds using the starter. After doing this, do not switch off the ignition.

 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 2 for the function "Interrogate fault memory" and confirm entry with Q key.
 
→ Indicated on display:
No fault recognised
  • ‒ Press ⇒key.

or

 
→ Indicated on display:
X faults recognised

If the printer on the fault reader is switched on the stored faults will be displayed and printed out in sequence.

  • ‒ Locate and eliminate faults printed out as per fault table
    => Page 01-12.

Vehicles with engine code ANB:

Notes:

  • ◆ Do not erase the fault memory if no fault is stored, otherwise the readiness code will be reset.
  • ◆ The readiness code must be re-generated if the fault memory has been erased => Page 01-58.

All models

  • ‒ Press ⇒key.
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 5 for the function "Erase fault memory" and confirm entry with Q key.

Notes:

 
→ Indicated on display:
Attention!
Fault memory is not interrogated

This means that the proper sequence of steps was not followed.

  • ‒ Interrogate fault memory.

In the following cases the fault memory is not erased:

  • ◆ If the ignition was switched off after interrogating the fault memory
  • ◆ If an existing static fault was not rectified
 
→ Indicated on display:
Rapid data transfer    ⇒
Fault memory is erased!
  • ‒ Press ⇒key.
  • ‒ After completing repair work, interrogate the fault memory again.

Note:

This has the effect of erasing any faults that may have been stored while carrying out repairs (e.g. as a result of unplugging connectors).

Vehicles with engine code ANB:

  • ‒ If the fault memory was erased the readiness code must be generated again => Page 01-58.

End output

 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 6 for the function "End output" and confirm entry with Q key.
 
→ Indicated on display:
Rapid data transfer     HELP
Insert address word XX
  • ‒ Switch off ignition and unplug the diagnostic connector.

Fault table > < Connecting vehicle diagnostic, testing and information system VAS 5051 or fault reader V.A.G 1551 and selecting functions