Overview - Sound System, Standard Sound System, 9VD

Standard Sound System without ANC, 9VD+EP0

• One loud speaker on the left side, center and right side of the instrument panel
• One speaker in the left and right front doors
• One speaker in the left and right B-pillars
• One loud speaker in the left and right rear doors
• Subwoofer -R211- in the rear shelf

1. Information Electronics Control Module 1 -J794- behind the glove compartment
2. Left Front Treble Speaker -R20- /Right Front Treble Speaker -R22- on Left and Right Sides of Instrument Panel
3. Left Front Bass Speaker -R21- /Right Front Bass Speaker -R23- in Front Doors
4. Left Rear Treble Speaker -R14- /Right Rear Treble Speaker -R16- Inside the B-Pillars
5. Left Rear Bass Speaker -R15- /Right Rear Bass Speaker -R17- in Rear Doors
6. Center Speaker -R208- in the Center Instrument Panel
7. Subwoofer -R211- in the rear shelf
8. MOST Bus

Standard Sound System with ANC, 9VD+EP1

• One loud speaker on the left side, center and right side of the instrument panel
• Two speakers in the left and right front doors, RX2/RX3
• One speaker in the left and right B-pillars
• One loud speaker in the left and right rear doors
• Subwoofer -R211- in the rear shelf
• Digital Sound System Control Module -J525- in luggage compartment on left rear side
• ANC microphones inside the headliner

Courtesy of AUDI OF AMERICA, LLC

1. Digital Sound System Control Module -J525- in luggage compartment on left rear side
2. Left Front Treble Speaker -R20- in the instrument panel on the left side
3. Left Front Door Speaker -RX2- in Left Front Door
4. Left Front Midrange Speaker -R103- in Left Front Door
5. Left Front Bass Speaker -R21- in Left Front Door
6. Left Rear Treble Speaker -R14- in Left B-Pillar
7. Left Rear Bass Speaker -R15- in Left Rear Door
8. Center Speaker -R208- in the Center Instrument Panel
9. Subwoofer -R211- in the rear shelf
10. Right Rear Bass Speaker -R17- in Right Rear Door
11. Right Rear Treble Speaker -R16- Inside Right B-Pillar
12. Right Front Door Speaker -RX3- in Right Front Door
13. Right Front Midrange Speaker -R104- in Right Front Door
14. Right Front Bass Speaker -R23- in Right Front Door
15. Right Front Treble Speaker -R22- in Instrument Panel on the Right Side
16. Left Center Microphone -R142- /Right Center Microphone -R143- /Left Rear Microphone -R144- /Right Rear Microphone -R145-
17. MOST Bus

Fault Finding is performed using the "Guided Fault Finding"  on the Vehicle Diagnostic Tester.

Notes on MOST bus

The optical data bus "MOST bus" is used in addition to the CAN bus.

A fiber-optic cable is used. Fiber optic cables are routed inside corrugated tubes for protection.

Replace the complete fiber-optic cable if possible.

The front surfaces of the connectors must not get dirty.

If disconnecting the connectors: Attach the Fiber-Optic Repair Set - Connector Protective Caps: VAS6223/9  .

When routing fiber-optic cables, make sure not to go below the minimum bending radius of 25 mm. Do not crush or kink the fiber-optic cables.

Fiber-optic cable repair. Refer to FIBER-OPTIC CABLES, REPAIRING .