| Number | X-pin, color | Description |
|---|---|---|
| X1561 | 4 -pin, Black | Connector Steptronic switch |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Terminal 31 | Ground splice |
| 2 | A | Downshift signal | Transmission control module (AGS) |
| 3 | A | Upshift signal | Transmission control module (AGS) |
| 4 | E | Illumination switch panel signal | Transmission range indicator light |