SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | 4-cylinder engine (2.0l 4V, TDI Common Rail) | Fuel preparation system Diesel injection | Engine control unit | Reading and clearing engine control unit fault memory

Reading and clearing engine control unit fault memory

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Central diagnosis -VAS 5051B-, see equivalent → Anchor or central diagnosis -VAS 5052-, see equivalent → Anchor

t	Cable 3m. -VAS 5051/5A-, see equivalent → Anchor or cable 5m. -VAS 5051/6A-, see equivalent → Anchor or diagnostic cable -VAS 5052/3-1-, see equivalent → Anchor

Procedure

–	Connect the Vehicle Diagnosis, Testing and Information System -VAS 5051/- as follows:

–	Connect the 5m. cable -VAS 5051/6A- to the diagnostic connection.

–	Start engine and run at idling speed.

Only when engine does not start:

–	Switch ignition on.

–	On the screen, push the „Vehicle self-diagnosis“ button.

Select vehicle system:

–	Press button „01 - Engine electronics“ on display.

The control unit identification and engine control unit coding are indicated on display.

Select diagnostic function

–	Press button „02 - Read fault memory“ on display.

–	If no fault is stored in engine control unit „0 fault(s) detected“ is displayed.

–	If faults are stored in the engine control unit, they are shown one below the other on the display.

–	Press the ← button.

–	Press button „05 - Clear fault memory“ on display.

–	Press function „06-End output“.

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