Volkswagen Workshop Service and Repair Manuals

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 (V.A.G 1552) and select engine electronics control unit with the "Address word" 01. When doing this the engine must be running at idling speed.
  (Connecting fault reader and selecting engine electronics control unit .)

Only when engine does not start:

• ‒ Interrogate fault memory with 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.
Then the display will show:

• ‒ Locate and eliminate faults printed out as per fault table => Page 01-11 .
• ‒ 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 fault memory and erasing fault memory, the fault memory will not be erased.

• ‒ Press ⇒key.

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

Note:

If a fault is present which is not recognised by the self diagnosis, carry out further fault finding using the fault table in "Engine fault finding" binder.