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Removing and installing engine control unit > < Engine control unit

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Checking cables and components with the testerVAG 1598/31
Checking cables and components with the tester -VAG 1598/31-
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
   
t  Engine tester -VAG 1598/31-, see equivalent → Anchor
  Note
t  The engine tester -VAG 1598/31- is designed to be simultaneously connected to the cable harness going to the engine control unit and the unit itself.
t  This has the advantage that, when the engine tester -VAG 1598/31- is connected, the electronic engine control unit remains completely operative (for example, measurement of signals with the engine running).
t  The need to additionally connect the control unit to the test box is indicated in the corresponding test processes.
t  The connector contact number and the engine tester -VAG 1598/31- connection number coincide.
  WARNING
Before connecting the measuring cables, select the appropriate measurement field and follow the test procedures to avoid damaging electronic components.
Operation process
–  Switch off ignition.
–  Remove the connector → Item for the air hose air mass gauge.
–  Unscrew the bolts → Item on the air filter housing (upper section).
–  Move the housing and the hose to one side. Be careful not to cause any damage.
  W00-0943
Now release connector on engine control unit and pull off connector.
–  Release the connector fixings and detach the connectors from the engine control unit.
  E23-0059
–  Switch on the engine tester -VAG 1598/31-. The tester clip should be connected to earth.
–  Conduct a test → Vehicle diagnostic, testing and information system VAS 5051.
–  Once the verifications are done, fit the engine control unit .
–  Install the air filter housing (upper section) and connect the air mass gauge.
Following the initial connection of the engine control unit, the following operations must be carried out:
–  Consult and erase the fault memory → Vehicle diagnostic, testing and information system VAS 5051.
  E23-0058

Removing and installing engine control unit > < Engine control unit