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Connecting VAG 1598/31 Test Box




Wiring and components, checking with VAG 1598/31 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 multimeter VAG 1526 or the multimeter VAG 1715 and the diode test lamp VAG 1527 for the checks.
- To connect the testers to VAG1598/31 test box, always use the adapter leads from VAG 1594 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.


VAG 1598131 test box, connecting
- Switch ignition off.







- Remove cover of E-box for control modules in plenum chamber.
- Carefully unclip holding bracket -arrow- using screw driver.
- Release connectors on engine control module and disconnect connectors.
- Connect VAG 1598/31 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, Refer to "Adaptation of Throttle Valve Control Module, Performing" Testing and Inspection
- On vehicles with automatic transmission carry out adaptation for kick-down switch, Refer to "Kick-Down Switch Point, Checking" Testing and Inspection
- Display readiness code, Refer to Readiness Code Reading
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