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Volkswagen Workshop Service and Repair Manuals

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Fault table > < Connecting fault reader V.A.G 1551 and selecting engine electronics control unit

Passat (B3)

Diesel injection and glow plug system
Self diagnosis
Interrogating fault memory

Special tools, testers and auxiliary items

  • ◆ Fault reader V.A.G 1551 with cable V.A.G 1551/3

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.

Work sequence

  • ‒ Connect fault reader V.A.G 1551 and select Diesel pump electronics control unit (address word 41); selection is carried out with engine idling

Only when engine does not start:

  • ‒ Switch on ignition.
  • ‒ Switch on printer with the Print button
    (Warning lamp in button lights up).
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Input 02 for "Interrogate fault memory" function and confirm with Q.
 
→ The number of faults stored or "No fault recognised!" will be shown on the display.
X Faults recognised!

Note:

If something different is indicated on the display:

=> Fault reader operating instructions

If one or more faults are stored:

The stored faults will be displayed and printed out one after the other.
 
→ After the stored faults have been printed out, the display will show:
Rapid data transfer     HELP
Select function XX

If no fault is stored:

  • ‒ Press ⇒ key.
  • ‒ Input 06 for "End output" function and confirm with Q.
  • ‒ Locate and eliminate faults printed out as per fault table => Page 01-7 .
  • ‒ Erasing fault memory => Page 01-14

Fault table > < Connecting fault reader V.A.G 1551 and selecting engine electronics control unit