Volkswagen Workshop Service and Repair Manuals > Golf Mk4 > Power unit | Direct injection and preglow system with distributor-type pump to 04.99 | Self diagnosis, V.A.G Inspection Service | Fault memory

Read fault memory

Special tools and workshop equipment required

t	Fault reader -V.A.G 1551- or vehicle system tester -V.A.G 1552- with diagnosis cable -V.A.G 1551/3-

Procedure

–	Connect fault reader -V.A.G 1551- or vehicle system tester -V.A.G 1552- and select control unit for engine electronics with “address word 01”. When doing this the engine should be idling. (Connect fault reader and select engine electronics control unit → Chapter.)

Only when engine does not start:

–	Switch on ignition.

–	Switch on fault reader printer with the print key. The warning lamp in key must light up.

Indicated on display:

–	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.

Rapid data transfer                 HELP

Select function XX

The number of faults stored or “no fault recognised!” will be shown on the display.

If one or more faults are stored:

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

X Faults recognised!

When the stored faults have been printed out, the display will show:

–	Rectify the faults printed-out using the fault table → Chapter.

–	Then erase the fault memory → Chapter

If no fault is stored:

–	Press → button.

Rapid data transfer                 HELP

Select function XX

Indicated on display:

–	Press keys 0 and 6 for function “End data transfer” and confirm entry with Q key.

Rapid data transfer                 HELP

Select function XX

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