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.
2012 Volkswagen Golf TDI, 2D Hatchback, Automatic DCT TransFACTORY OEM SERVICE PROCEDURE
A/C Control Module Connector End View (J301, T20c)
| Cavity | Function |
|---|---|
| 1 | ... |
| 2 | ... |
| 3 | Center vent temperature sensor, signal |
| 4 | ... |
| 5 | High pressure sensor |
| 6 | ... |
| 7 | CAN Low |
| 8 | CAN High |
| 9 | ... |
| 10 | ... |
| 11 | ... |
| 12 | Front seat heating control module, right |
| 13 | Front seat heating control module, left |
| 14 | ... |
| 15 | ... |
| 16 | A/C compressor regulator valve |
| 17 | ... |
| 18 | Center vent temperature sensor, ground |
| 19 | Battery power, module |
| 20 | Ground, module |
Factory Service Tools
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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.
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