Connecting VAG 1598/31 Test Box

Wiring and Component Check With VAG1598/31 Test Box







NOTE:
- The VAG1598/31 test box is designed so it can be simultaneously connected to the control module wiring harness and to the control module itself.
- This has the advantage of enabling the engine management system to remain fully operational even with the test box connected (for example, when testing signals while the engine is running).
- The instructions for performing the individual tests indicate whether or not the engine control module itself also needs to be connected to the test box.
- Use the hand multimeter Fluke 83 (or equivalent) or the multimeter VAG1715 and the diode test lamp VAG1527B for the checks.
- To connect the testers to VAG1598/31 test box, always use the adapter leads from VAG1594 connector test kit.


CAUTION!
To prevent damage to the electronic components, switch to the respective measuring range before connecting the measuring cable and observe the test requirements.


Connecting VAG1598/31 test box

- Switch off ignition.







- Remove cover of E-box for control modules in plenum chamber, right side. To do this unscrew 7 screws -arrow-. For the screw at right top in illustration unclip cover in vent grill.
- Remove engine control module.
- Release connectors on engine control module and disconnect connectors.







- Connect VAG1598/31 test box to wiring harness connector. Also connect the Ground (GND) clamp from test box to Ground (GND). The instructions for performing the individual tests indicate whether or not the engine control module itself also needs to be connected to the test box.
- Carry out test as described in the relevant repair instructions.


After installing the engine control module, carry out the following operation
- After re-connecting the engine control module, perform adaptation of engine control module to throttle valve control module.
- Display readiness code. Readiness Code, Function