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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSVOLKSWAGEN2012JETTA TDI, 4D SEDAN, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 82 (COMMUNICATION (CONVERTIBLE))91 COMMUNICATIONDESCRIPTION AND OPERATIONEXTERNAL AUDIO SOURCE CONNECTION CONNECTORSMULTIMEDIA SYSTEM CONTROL MODULE -J650- CONNECTOR ASSIGNMENTS, UMI
2012 Volkswagen Jetta TDI, 4D Sedan, Standard Trans
Multimedia System Control Module -J650- CONNECTOR ASSIGNMENTS, UMI
2012 Volkswagen Jetta TDI, 4D Sedan, Standard TransSECTION Multimedia System Control Module -J650- CONNECTOR ASSIGNMENTS, UMI
WARNING: This page is about a different car, the 2016 Volkswagen Beetle, 2015 Volkswagen Beetle, 2014 Volkswagen Beetle, and 2013 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.
A -
54-Pin Connector -T54-
- Terminal 30
- Terminal 31
- Switch on signal
- Tel-LF (+) left to Radio -R-
- Tel-LF (-) left to Radio -R-
- LF (+) from Control Module for Emergency Call Module and Communication Unit -J949-
- LF (-) from Control Module for Emergency Call Module and Communication Unit -J949-
- Tel-LF (+) right to Radio -R-
- Tel-LF (-) right to Radio -R-
- Not Assigned
- Telephone Microphone -R38- (+) from RNS
- Telephone Microphone -R38- (-) from RNS
- Not Assigned
- Not Assigned
- Not Assigned
- Not Assigned
- CAN Bus High
- Can Bus Low
- Not Assigned
- Not Assigned
- Not Assigned
- LF (+) right to Radio -R-, MDI
- LF (+) left to Radio -R-, MDI
- LF ground to the Radio -R-, MDI
- Not Assigned
- Not Assigned
- Not Assigned
- Not Assigned
- Not Assigned
- Cellular Telephone Preparation Control Head -E508-
- Cellular Telephone Preparation Control Head -E508-
- Not Assigned
- Left audio signal from External Audio Source Connection -R199-, AUX IN
- Right audio signal from External Audio Source Connection -R199-, AUX IN
- Audio ground from External Audio Source Connection -R199-, AUX IN
- Audio ground shielding from External Audio Source Connection -R199-, AUX IN
- Not Assigned
- Terminal 30 to Telephone Baseplate -R126-
- Not Assigned
- DIAG signal from Telephone Baseplate -R126-
- Not Assigned
- Not Assigned
- Not Assigned
- Not Assigned
- Not Assigned
- Not Assigned
- Wake UP to Telephone Baseplate -R126-
- DIAG signal from Telephone Baseplate -R126-
49 through 54 - not assigned
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:
- 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.