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 MANUALSVOLKSWAGEN2012JETTA TDI, 4D SEDAN, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 197 (COMMUNICATION (HATCHBACK))91 COMMUNICATIONDESCRIPTION AND OPERATIONSOUND SYSTEM CONNECTOR ASSIGNMENTSCONNECTOR ASSIGNMENTS, AMPLIFIER -R12-, VOLKSWAGEN SOUND SYSTEM
2012 Volkswagen Jetta TDI, 4D Sedan, Standard Trans
CONNECTOR ASSIGNMENTS, Amplifier -R12-, VOLKSWAGEN SOUND SYSTEM
2012 Volkswagen Jetta TDI, 4D Sedan, Standard TransSECTION CONNECTOR ASSIGNMENTS, Amplifier -R12-, VOLKSWAGEN SOUND SYSTEM
WARNING: This page is about a different car, the 2016 Volkswagen Beetle, 2015 Volkswagen Beetle, 2014 Volkswagen Beetle, 2013 Volkswagen Beetle, and 2012 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.
- 38-Pin Connector -T38-
- Terminal 31
- Terminal 30
- Right Front Bass Speaker -R23- (-)
- Not Assigned
- Not Assigned
- Left Front Bass Speaker -R21- (-)
- Right Front Treble Speaker -R22- (-)
- Left Front Treble Speaker -R20- (+)
- Left Rear Speaker (+)
- Right Rear Speaker (-)
- Right Front Bass Speaker -R23- (-)
- Right Front Bass Speaker -R23- (+)
- Left Front Bass Speaker -R21- (+)
- Left Front Bass Speaker -R21- (-)
- Right Front Bass Speaker -R23- (+)
- Not Assigned
- Not Assigned
- Left Front Bass Speaker -R21- (+)
- Right Front Treble Speaker -R22- (+)
- Left Front Treble Speaker -R20- (-)
- Left Rear Speaker (-)
- Right Rear Speaker (+)
- Can Bus Low
- Not Assigned
- Not Assigned
- Not Assigned
- Left Rear Signal Input (-)
- Right Rear Signal Input (-)
- Left Front Signal Input (-)
- Right Front Signal Input (-)
- CAN Bus High
- Not Assigned
- Not Assigned
- Not Assigned
- Left Rear Signal Input (+)
- Right Rear Signal Input (+)
- Left Front Signal Input (+)
- Right Front Signal Input (+)
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.