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Fault table > < Connecting fault reader V.A.G 1551 and selecting functions

A4 Mk1

Motronic Injection and Ignition System (4 cyl.)
Motronic self-diagnosis
Interrogating and erasing fault memory
  • ‒ Connect V.A.G 1551 fault reader =>Page 01-4.
 
→ Display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 2
    (02 is used to select the function "Interrogate fault memory")
 
→ Display:
Rapid data transfer     Q
02 - Interrogate fault memory    
  • ‒ Confirm entry with Q key.
 
→ The display shows the number of stored faults or "No fault detected".
X faults detected
 
Notes:
No fault detected
  • ◆ The stored faults are displayed and printed in sequence when the printer is switched on.
  • ◆ If the printer is switched off then the ⇒key should be pressed to display the next fault.
  • ‒ After the last fault has been displayed press the ⇒ key.

Note:

If a problem persists that has not been detected by the self-diagnosis, continue with faultfinding according to the Problems table from the "Engine fault-finding" binder.
 
→ Display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 5
    (05 is used to select the function "Delete fault memory")
 
→ Display:
Rapid data transfer     Q
05 - Delete fault memory
  • ‒ Confirm entry with Q key.

______________________________________________
 
→ If this display appears:
Important!        ⇒
Fault memory has not been interrogated

If the ignition is switched off between interrogating the fault memory and deleting the fault memory, then the fault memory will not be deleted.

  • ‒ Adhere strictly to operating sequence i.e. first interrogate fault memory.

______________________________________________
 
→ Display:
Rapid data transfer     ⇒
Fault memory has been deleted
  • ‒ Press ⇒key
 
→ Display:
Rapid data transfer     HELP
Select function XX
  • ‒ Eliminate faults listed on printout as per fault table =>Page01-11.
  • ‒ After rectifying the fault(s), interrogate the fault memory again and delete it to make sure that any faults stored in the mean time (e.g. due to disconnecting plugs) are cleared.
  • ‒ Switch off engine and restart.
  • ‒ Perform test drive for at least 10 minutes.
  • ‒ Perform automatic test sequence by entering address word 00.

Fault table > < Connecting fault reader V.A.G 1551 and selecting functions