SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | 3 cylinder Fuel-injection engine (1.2 l) | Mixture preparation system, electronic inj.,Gas

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 5051 B -

Operation process

–	Connecting the central diagnosis -VAS 5051B-

–	Start engine and run at idling speed.

Only when engine does not start:

–	Switch on the ignition.

–	Briefly press the key „Vehicle self diagnosis“.

Indicated on the vehicle diagnostic, testing and information system -VAS 5051B-:

–	Select vehicle system „01 - Engine electronics“ in menu -1-.

–	Wait until the following is displayed.

Indicated on the vehicle diagnostic, testing and information system -VAS 5051B-:

–	Select function „02 - Interrogate fault memory“.

–	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.

–	Select function „05 - Erase fault memory“.

–	Press function „06-End output“.

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