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.DB● LIVE

HOMESERVICE MANUALSVOLKSWAGEN2012JETTA TDI, 4D SEDAN, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 63 (COMMUNICATION (SPORTWAGEN))91 COMMUNICATIONDESCRIPTION AND OPERATIONRNS 31512-PIN CONNECTOR 4, CD CHANGER -R41- /MULTIMEDIA SYSTEM CONTROL MODULE -J650

2012 Volkswagen Jetta TDI, 4D Sedan, Standard Trans

12-Pin Connector 4, Cd Changer -R41- /Multimedia System Control Module -J650

2012 Volkswagen Jetta TDI, 4D Sedan, Standard TransSECTION 12-Pin Connector 4, Cd Changer -R41- /Multimedia System Control Module -J650

WARNING: This page is about a different variant/trim than selected.

Fig 1: Identifying 12-Pin Connector 4, CD Changer / Multimedia System Control Module

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Left video input (+) to Multimedia system control module
Audio input ground to Multimedia system control module
Audio ground from the CD changer
Terminal 30 to the CD changer
Not used
DATA OUT to the CD changer
Right audio input (+) to Multimedia system control module
Left audio from the CD changer
Right audio from the CD changer
Control signal to the CD changer
DATA IN from the CD changer
CLOCK from the CD changer

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.