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 MANUALSAUDI2012A7REPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSELECTRICAL COMPONENTS LOCATIONS & CONNECTOR END VIEWSCOMP. LOC. VEHICLE REAR MODULESDIGITAL SOUND SYSTEM CONTROL MODULE J525, BOSE (8RY), FROM MY 2015DIGITAL SOUND SYSTEM CONTROL MODULE -J525-, CONNECTOR VIEWS, W/MMI NAVIGATION PLUS (I8H)
2012 Audi A7
Digital Sound System Control Module -J525-, Connector Views, W/MMI Navigation Plus (I8H)
2012 Audi A7SECTION Digital Sound System Control Module -J525-, Connector Views, W/MMI Navigation Plus (I8H)
- 38-Pin Connector -T38-/18-Pin Connector -T18i-
| T18i (B) | Designation |
|---|---|
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | Noise reduction microphone 3 R2871 |
| 7 | Noise reduction microphone 3 R2871 |
| 8 | Noise reduction microphone 1 R2851 |
| 9 | Noise reduction microphone 1 R2851 |
| 10 | Engine Control Module (ECM) J6231 Subframe Mount Control Module J9311 |
| 11 | Terminal 31, to 397 Ground Connection 32 (in main wiring harness)1 Exhaust Flap Control Module J8831 |
| 12 | |
| 13 | Noise reduction microphone 4 R2881 |
| 14 | Noise reduction microphone 4 R2881 |
| 15 | |
| 16 | Noise reduction microphone 2 R2861 |
| 17 | Noise reduction microphone 2 R2861 |
| 18 |
| T38 (A) | Designation | ||
|---|---|---|---|
| 1 | Terminal 30, from Fuse panel 4 ST4 Fuse Panel F SF | ||
| 2 | Terminal 31, to 50 Ground Connection (in left luggage compartment) | ||
| 3 | |||
| 4 | Subwoofer R211 | ||
| 5 | |||
| 6 | |||
| 7 | Left Rear Bass Speaker R15 Left Rear Treble Speaker R14 |
||
| 8 | Right Rear Bass Speaker R17 Right Rear Treble Speaker R16 |
||
| 9 | Left effects speaker R209 | ||
| 10 | Right effects speaker R210 | ||
| 11 | Left Front Bass Speaker R21 | ||
| 12 | Left Front Bass Speaker R21 | ||
| 13 | Right Front Bass Speaker R23 | ||
| 14 | Right Front Bass Speaker R23 | ||
| 15 | |||
| 16 | Subwoofer R211 | ||
| 17 | |||
| 18 | |||
| 19 | Left Rear Bass Speaker R151(1) Left Rear Treble Speaker R14 |
||
| 20 | Right Rear Bass Speaker R17 Right Rear Treble Speaker R16 |
||
| 21 | Left effects speaker R209 | ||
| 22 | Right effects speaker R210 | ||
| 23 | |||
| 24 | |||
| 25 | Ringbreak Diagnosis Wire B444 OBD connection 1 (in main wiring harness) |
||
| 26 | Right Front Midrange Speaker R104 | ||
| 27 | Right Front Midrange Speaker R104 | ||
| 28 | Ground-shielding Microphone Unit (in front roof module) R164 | ||
| 29 | Inside Microphone R74 Microphone Unit (in front roof module) R164 |
||
| 30 | Inside Microphone R74 Microphone Unit (in front roof module) R164 |
||
| 31 | Center speaker R208 | ||
| 32 | Center speaker R208 | ||
| 33 | Right Front Treble Speaker R22 | ||
| 34 | Right Front Treble Speaker R22 | ||
| 35 | Left Front Treble Speaker R20 | ||
| 36 | Left Front Treble Speaker R20 | ||
| 37 | Left Front Midrange Speaker R103 | ||
| 38 | Left Front Midrange Speaker R103 | ||
|
|||
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.