Replacing Diesel Direct Injection System Control Unit -J248 - Skoda Octavia 1997 Workshop Manual

23
Test box - V.A.G 1598/
31-, bush
1, 2 + 4, 5
37 + 4, 5
If the specified values are not reached:
–
Test diesel direct injection system relay - J322-.
Replacing diesel direct injection system
control unit -J248-
Special tools, test and measuring equipment and
auxiliary items required
Vehicle system tester -V.A.G 1552- with cable
-V.A.G 1551/3, 3A, 3B oder 3C-
Procedure
–
Connect vehicle system tester -V.A.G 1552-. Switch
ignition on and select address word 01 „Engine elec-
tronics" 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
Rep. Gr. 66.
–
Release the connector catches and unplug the con-
nectors of the diesel direct injection control unit
- J248-.
–
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 con-
trol unit -J248- 23-5 page 3.
–
Adapt new diesel direct injection system control unit
-J248- to immobiliser control unit
Rep. Gr. 96.
–
On vehicles fitted with CCS: Activate CCS
page 4.
–
Interrogate fault memory of new engine control unit
and erase fault memory, rectify any faults present
Chap. 01-1.
For vehicles from 08.03
23-5 2
page
OCTAVIA 1997 1.9/74 kW (TDI) Engine, Fuel Injection and Glow Plug System
Specification
approx. battery voltage
approx. battery voltage
Body Work;
Electrical System;
23-5
Engine control unit
038906019R 1.9l R4
Coding 00003
EDC G000SG 1053 ->
WSC XXXXX
A23-0026
Edition 12.03
S00.5139.52.20