Skoda Workshop Service and Repair Manuals > Fabia Mk1 > Engine | 2.0/85 Engine, Fuel Injection | Mixture preparation system, electronic inj.,Gas | Engine control unit

Replacing engine control unit

Special tools and workshop equipment required

t	Vehicle system tester -V.A.G 1552- with cable -V.A.G 1551/3, 3A, 3B oder 3C-

Procedure

–	Enter the control unit identification and thus also the coding of the previous control unit as follows:

–	Connect vehicle system tester -V.A.G 1552-. Switch ignition on and select address word 01 “Engine electronics” → Chapter.

The control unit identification number and the coding are shown on the display, e.g.:

–	Select function 06 “End output” and switch ignition off.

Remove air filter → Chapter.

06A906032CC 2.0l R4/2V           3658 ->

Coding 00001                     WSCXXXXX

–	Release the plug locks and unplug control unit connectors -arrow-.

–	Press open the latches of the fixture -arrows A- and pull the engine control unit forward -arrow B-.

–	Release the second plug lock and unplug the control unit connector.

–	Installation is carried out in the reverse order.

Note

t	Check current coding and code new control unit → Chapter.

t	Adapt new control unit to the electronic immobiliser → Electrical System; Rep. Gr.90.

t	Adapt engine control unit to throttle valve control unit → Chapter.

t	Activate CCS → Chapter.

t	Test idling speed → Chapter, Display group 001, display field 1.

t	Interrogate fault memory, rectify any faults and erase the fault memory → Chapter.

t	Generate readiness code → Chapter.

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