SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | 4-cylinder diesel engine (1.9 l engine) | Fuel preparation system Diesel injection | Engine control unit | Reading and erasing engine control unit fault memory

Reading and erasing engine control unit fault memory

Special tools and workshop equipment required

t	Vehicle diagnosis, testing and information system -VAS 5051-

t	Diagnosis cable -VAS 5051/1- or diagnosis cable -VAS 5051/3-

Procedure

–	Connect vehicle diagnosis, testing and information system -VAS 5051- as follows:

Vehicles ► 05.2000

–	Open ashtray -3-.

–	Press ashtray cover -1- on both sides in direction of arrows. The ashtray -2- springs out slightly and can be removed.

–	Pull open ashtray housing out of centre console.

–	Push diagnosis cable -VAS 5051/1- connector onto diagnosis connector.

Vehicles 06.2000 ►

–	Connect diagnosis cable -VAS 5051/1- or -VAS 5051/3- to diagnosis connector.

Continuation for all vehicles

–	Start engine and run at idling speed.

Only when engine does not start:

–	Switch on ignition.

Selecting operating mode:

–	Press button on display for „Vehicle self-diagnosis“.

Selecting vehicle system:

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

The control unit identification and coding are indicated on display.

Selecting diagnostic function:

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

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

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

–	Press ← button.

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

–	Press function „06-End output“.

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