Audi Workshop Service and Repair Manuals

• ‒ 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 idling.

Note:

If the engine does not start, turn over the engine with the starter motor for at least 5 seconds, then leave the ignition switched on.

• ‒ Switch on printer with the Print button
  (Warning lamp in button lights up).

• ‒ Operate fault reader taking into account the information on the display:

• ‒ Press keys 0 and 2 for function "Interrogate fault memory" and confirm entry with Q key.

If no fault is stored:

• ‒ Press ⇒key.

If one or more faults are stored:

The faults stored will be displayed and printed out one after the other.

• ‒ Locate and eliminate faults printed out as per fault table
  => Page 01-13.
• ‒ Press keys 0 and 5 for the function "Erase fault memory" and confirm entry with Q key.

Note:

If the ignition is switched off between interrogating the fault memory and erasing the fault memory, the fault memory will not be erased. It is therefore important to follow the procedure exactly, i.e. first interrogate the fault memory and then erase it.

• ‒ Press ⇒key.

• ‒ Press keys 0 and 6 for the function "End output" and confirm entry with the Q key.

Automatic test sequence

During test and assembly work faults can be recognised from other control units like e.g. plug disconnected. Therefore on completion the fault memories of all control units must be interrogated and erased. To do this:

• ‒ Press 0 key twice for address word "Automatic test sequence" and confirm entry with Q key. The fault reader V.A.G 1551 will then transmit all known address words one after the other.

When a control unit answers with its identification the number of stored faults appears on the display or "No fault recognised".

Any system faults that are stored will be displayed one after the other and printed out. The V.A.G 1551 will then transmit the next address word.

• ‒ Erase all fault memories and then carry out a road test.
• ‒ Interrogate the fault memories of all control units again using the "automatic test sequence". No faults must be stored in fault memory.

If no fault is stored:

• ‒ Press the ⇒key.

• ‒ Press keys 0 and 6 for the "End data transfer" function and confirm input with the Q key.