Test requirements:
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- Fuses for engine electronics OK
See appropriate System Wiring Diagrams article.
- Battery voltage at least 12.7 V
- Alternator OK