SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | SDI diesel injection and preheating system | Self diagnosis, V.A.G Inspection Service

Fault memory: interrogating

Special tools and workshop equipment required

t	Fault reader -V.A.G 1551-

t	Cable -V.A.G 1551/3B-

Note!

The vehicle system tester -V.A.G 1552- can be used instead of the fault reader -V.A.G 1551-, although a printout will not be possible in such cases.

Test sequence

–	Connect fault reader -V.A.G 1551- (V.A.G 1552) and select engine electronics control unit with the “address code” 01. When doing so the engine must be idling. (Fault reader: Connecting and selecting the engine electronics control unit → Chapter.)

Only when engine does not start:

–	Switch ignition on.

–	Switch the fault reader printer on by pressing the Print-key. The warning lamp in the key must light up.

Indicated on display:

–	Operate the fault reader taking into account the information on the display:

–	Press keys 0 and 2 for function “Interrogate fault memory” and confirm entry with the Q-key.

Rapid data transfer                 HELP

Select function XX

The display will show either the number of faults stored or “No fault recognised”.

If one or more faults are stored

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

X faults recognised

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

Note!

The fault reader is necessary when continuing with fault finding. Therefore, leave the engine on, with the fault reader connected.

–	Eliminate the printed faults in accordance with the fault table → Chapter.

–	Next, erase fault memory → Chapter.

If no fault is stored

–	Press the →-key.

Rapid data transfer                 HELP

Select function XX

Indicated on display:

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

Rapid data transfer                 HELP

Select function XX

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