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
Vehicle Electrical Control Module System Connector End View (J519, T52b)
| Cavity | Function |
|---|---|
| 1 | Fuse 15 on fuse holder C -SC15- |
| 2 | Rear window wiper motor -V12-, windscreen and rear window washer pump -V59- |
| 3 | ... |
| 4 | ... |
| 5 | Tank filler flap locking motor -V155-/fuel tank cap detection switch -F334- |
| 6 | ... |
| 7 | ... |
| 8 | ... |
| 9 | ... |
| 10 | ... |
| 11 | Rear lid electric opener motor -V254- |
| 12 | Terminal 15 voltage supply relay -J329- |
| 13 | ... |
| 14 | Heater/heat output switch -E16- Heated rear window warning lamp -K10- |
| 15 | Switch and instrument illumination regulator -E20- |
| 16 | ... |
| 17 | ... |
| 18 | ... |
| 19 | ... |
| 20 | ... |
| 21 | Heated front seats control unit -J774- |
| 22 | Heated rear window relay -J9- |
| 23 | ... |
| 24 | Hazard warning lights button -E229- |
| 25 | ... |
| 26 | ... |
| 27 | ... |
| 28 | Terminal 75 voltage supply relay 1 -J680- |
| 29 | Terminal 50 voltage supply relay -J680- |
| 30 | Switch and instrument illumination regulator -E20- |
| 31 | ... |
| 32 | ... |
| 33 | Rain/light recognition sensor -G397- LIN bus, wiper motor control unit -J400- |
| 34 | ... |
| 35 | ... |
| 36 | Alarm horn -H12- interior monitoring sensor -G273- |
| 37 | Interior monitoring deactivation switch -E267-/deactivation button for vehicle inclination sender -E360- |
| 38 | Fuel supply relay -J643-, fuel pump control unit -J538- depending on equipment |
| 39 | ... |
| 40 | Headlight washer system relay -J39- |
| 41 | Dual tone horn relay -J4- |
| 42 | Positive connection 4 (30a) in dash panel wiring harness -A168- |
| 43 | Positive connection 2 (30a), in interior wiring harness -B150- |
| 44 | ... |
| 45 | ... |
| 46 | ... |
| 47 | ... |
| 48 | ... |
| 49 | ... |
| 50 | Front left entry light -W31-/front right entry light -W32 |
| 51 | Positive connection 2 (58b), in interior wiring harness -B238- |
| 52 | 367 - ground connection 2, in main wiring harness |
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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