SEAT Workshop Service and Repair Manuals > Leon Mk2 > Engine, mixture preparation | Simos injection and ignition system | Self diagnosis, V.A.G Inspection Service | Self diagnosis

Simos injection and ignition system

Self diagnosis

Technical data of self diagnosis

Equipped with

1) Will be cancelled after 40th engine start if fault has not occurred again.

Control unit identification

=>Page 01-4; connecting fault reader V.A.G 1551 and selecting engine electronics control unit

Selectable functions

The prerequisites for selecting the desired functions can be taken from the table.

Function		Prerequisite
		Engine stationary, ignition switched on	Engine running at idling speed
02	Interrogate fault memory	x1)	x
03	Final control diagnosis	x	-
04	Introduction of basic setting	x2)	-
05	Erase fault memory	x	x
06	End output	x	x
07	Code control unit	x	-
08	Read measured value block	x	x
09	Read individual measuring value3)	x	x

1) Only if the engine will not start, interrogate fault memory with ignition switched on.

2) Must be carried out after performing the following work:
Replacing throttle valve control unit or engine control unit.

3) Only used currently for checks in the factory.

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