volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Final control diagnosis > < Fault table
Diesel direct injection and glow plug system
Fault memory
Erasing fault memory

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

  • ◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3

Test conditions

  • ● Fault eliminated

Note:

After eliminating faults the fault memory must be interrogated again as follows and then erased.

Work sequence

  • ‒ Connect fault reader V.A.G 1551 (V.A.G 1552). Start engine and select "Address word" 01 of engine control unit. When doing this the engine must be running at idling speed.
    (Connecting fault reader and selecting engine control unit .)
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 2 for function "Interrogate fault memory" and confirm entry with Q key.
 
→ Press ⇒key until all faults still stored have appeared and the display reads:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 5 for the function "Erase fault memory" and confirm entry with Q key.
  •  
    → Indicated on display:
    Rapid data transfer     ⇒
    Fault memory is erased!
    • ‒ If the fault memory will not erase there is a fault still in the system and this must be rectified.
    • ‒ Press the ⇒key.
     
    → Indicated on display:
    Rapid data transfer     HELP
    Select function XX
    • ‒ Press keys 0 and 6 for the "End data transfer" function and confirm input with the Q key.
    • ‒ Carry out a road test and interrogate fault memory again. No faults should be shown.

    Final control diagnosis > < Fault table