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Testing the diesel direct injection system relay J322 > < 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 the control unit is additionally connected to the test box or not, is indicated in the particular test procedure.
Always use the measuring tool set -V.A.G 1594 C- 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.
–  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. Clamp the earth clip -arrow- to the battery negative pole (-).
   Whether the control unit is additionally connected to the test box or not, is indicated in the particular test procedure.
–  Perform test as described in the relevant repair sequences.
  S23-0116

Testing the diesel direct injection system relay J322 > < Testing components