skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

ABOUT US
Testing fuel pump relay J17 > < Testing components

Fabia Mk1

Testing lines and components with test boxV.A.G 1598/31
Testing lines and components with test box -V.A.G 1598/31-
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).
Whether or not the engine control unit must also be connected to the test box is described in the relevant test sequences.
Always use the measuring tool set -V.A.G 1594 A- to connect the measuring tools (e.g. handheld multimeter -V.A.G 1526 A- etc.).
The contact numbers of the connectors and the bush numbers of the test box -V.A.G 1598/31- correspond.
Special tools and workshop equipment required
   
t  Test box -V.A.G 1598/31-
  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.
–  Remove air filter → Chapter.
–  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 both connectors of the wiring loom. The earth clip -arrow- of the test box must be connected to the negative battery terminal.
   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, interrogate and if necessary erase fault memory → Chapter.
  S24-0380

Testing fuel pump relay J17 > < Testing components