ECU AUDI A4 1998 B5 / 1.G ATW Engine Additional Signals Workshop Manual

24-172
If the correct control modules are installed:

- Check to be sure multi-pin connectors of control
modules are securely connected.
If multi-pin connectors are properly secured:

- Check CAN bus system

Checking a "two-line bus system"

Three or more control modules are
communicating across a "two-line bus
system".

- Analyze DTCs stored in memories of control
modules.

Note:
This analysis will help you locate the cause of the
line malfunction.
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