Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2012S4 QUATTRO SEDAN (8K2) V6-3.0L SC (CCBA)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSDIAGRAMSCONNECTOR VIEWS
2012 Audi S4 Quattro Sedan (8K2) V6-3.0L SC (CCBA)
Connector Views
2012 Audi S4 Quattro Sedan (8K2) V6-3.0L SC (CCBA)SECTION Connector Views
Data Bus On Board Diagnostic Interface Connector (J533)
Optical MOST-Bus connection (fiber optic) - A -
1. Input
2. Output
20 Pin Connector - item B -
1. Battery + (terminal 30)
2. LIN 1
3. Shielding (ACC rel.)
4. Shielding (ESL)
5. Controller Area Network (CAN) bus low (comfort)
6. CAN bus low (drivetrain)
7. CAN bus low (extended)
8. CAN bus Low (instrument cluster)
9. CAN bus Low (diagnosis)
10. Shielding (MOST diagnosis)
11. Ground - (terminal 31)
12. LIN 2
13. Instrument cluster wake-up
14. Terminal 15
15. CAN bus high (comfort)
16. CAN bus high (drivetrain)
17. CAN bus high (extended)
18. CAN bus high (instrument cluster)
19. CAN bus high (diagnosis)
20. Shielding
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.