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Skoda Workshop Service and Repair Manuals

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Replacing engine control unit > < Disassembling and assembling the air filter

Octavia Mk1

Testing lines and components with test boxV.A.G 1598/31
Testing lines and components with test box -V.A.G 1598/31-
Special tools and workshop equipment required
   
t  Test box -V.A.G 1598/31-
  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.
t  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  Refer to the relevant test procedures to determine whether the control unit is connected to the test box or not.
t  For connecting measuring equipments (e.g. voltage tester V.A.G 1527 B, handheld multimeter V.A.G 1526 A etc.) always use the measuring tool set V.A.G 1594 A.
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.
–  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.
  W00-0943
–  Connect test box -V.A.G 1598/31- to connector of wiring loom. Connect the earth clip -arrow- to the test box and to the battery. Whether or not the engine control unit must also be connected to the test box is described in the relevant test sequences.
–  Perform test as described in the relevant repair sequences.
  Note
After re-connecting the engine control unit perform adaptation of the engine control unit to the throttle valve control unit → Chapter.
  S24-0267

Replacing engine control unit > < Disassembling and assembling the air filter