A3 L4-2.0L Turbo (BPY) (2006)
Communications Control Module: Connector Views
Data Bus On Board Diagnostic Interface J533, Multi-pin Connector Assignments
20-pin connector, black
1. Battery positive (B+) - Terminal 30
2. Battery positive (B+) - Terminal 30
3. Reserved for external diagnostics
4. Reserved for K-wire
5. Convenience system CAN-Bus Low
6. Powertrain CAN-Bus Low
7. Reserved for shielding
8. Instrument cluster CAN-Bus Low
9. CAN Bus diagnosis Low
10. Infotainment CAN-Bus Low
11. Ground (GND) (-) - Terminal 31
12. Ground (GND) (-) - Terminal 31
13. Instrument cluster wake-up input
14. Terminal 15
15. Convenience system CAN-Bus High
16. Powertrain CAN-Bus High
17. Reserved for shielding
18. Instrument cluster CAN-Bus High
19. CAN Bus diagnosis High
20. Infotainment CAN-Bus High