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Replacing engine control unit > < Replace gasket of cover for injection timing device

Octavia Mk1

Testing lines and components with test box
Testing lines and components with test box
  Note
t  Use e.g. the hand multimeter -V.A.G 1526 A oder B-, then the voltage tester, e. g. -V.A.G 1527 B- for the test.
t  For connecting measuring equipment (e.g. voltage tester, handheld multimeter etc.) always use the adapter cable set e.g.-V.A.G 1594 A, B oder C-.
t  The contact numbers of the connector of the control unit and the socket numbers of the test box are identical.
  WARNING
To avoid damaging the electronic components, switch on the relevant measuring range before connecting the measuring cables and comply with the test conditions.
Special tools and workshop equipment required
t  Test box -V.A.G 1598/22- or -V.A.G 1598/31-
Test sequence
–  Switch off ignition.
–  Unscrew windscreen wiper arms and remove cooling water tank cover → Body Work → Rep. Gr.66.
–  Release the connector catches and unplug the control unit connectors at the engine control unit.
For the test box -V.A.G 1598/22-
   
–  Connect test box -V.A.G 1598/22- to connector of wiring loom.
–  Perform test as described in the relevant repair sequences.
For the test box -V.A.G 1598/31-
  S23-0030
–  Connect test box -V.A.G 1598/31- to connector of wiring loom. The earth clip should be connected to the test box and to battery.
–  Perform test as described in the relevant repair sequences.
  Note
t  The test box -V.A.G 1598/31- is designed in such a way that it can be simultaneously connected to the wiring loom of the engine control unit and to the actual engine control unit. The advantage being that the electronic engine control remains fully operational with the test box connected (e.g. measuring signals while the engine is running).
t  Whether the control unit remains connected to the test box, is described in the relevant test procedures.
  N24-0943

Replacing engine control unit > < Replace gasket of cover for injection timing device