Skoda Workshop Service and Repair Manuals > Octavia Mk1 > Drive unit | 1.9 l/96 kW (TDI) Engine, Fuel Injection and Glow Plug System | Fuel preparation system Diesel injection | Engine control unit | Replacing diesel direct injection system control unit J248

Procedure

–	Connect vehicle system tester -V.A.G 1552-. Switch ignition on and select address word 01 “Engine electronics” → Chap. 01-1.

The vehicle system tester -V.A.G 1552 - displays the control unit identification, e. g.:

–	Note Part No. of control unit and coding.

–	Enter function 06 “End output” and confirm entry with Q.

–	Switch off ignition.

–	Remove the cooling water tank cover → Body Work; Rep. Gr.66.

–	Release the connector catches and unplug the connectors of the diesel direct injection control unit - J248-.

038906019HJ 1.9l R4  EDC G000SG  1576 ->

Coding 00002                   WSC XXXXX

–	Use a screwdriver to push the catch of the fixture to the side and pull out the engine control unit forward.

–	Insert new engine control unit.

After installing the diesel direct injection system control unit -J248-, it is then necessary to carry out the following steps:

–	Perform coding of diesel direct injection system control unit -J248- → Chapter.

–	Adapt new diesel direct injection system control unit -J248- to immobiliser control unit → Electrical System; Rep. Gr.96.

–	On vehicles with CCS: activate CCS → Chapter.

–	Interrogate fault memory of new engine control unit and erase fault memory, rectify any faults present → Chap. 01-1.

For vehicles from 08.03

–	Generate readiness code → Chapter 01-3.

For all vehicles

–	Perform a test drive.

Note

Pay attention to safety precautions during the test drive → Chap. 23-1.

–	Once again interrogate the fault memory of the diesel direct injection system control unit - J248-.

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