| Number | X-pin, colour | Description |
|---|---|---|
| X1511 | 6 -pin, Black | Plug connector Valve block, rear right lumbar support |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E | Signal, pump | Rear right lumbar support switch |
| 3 | E | Signal, lower chamber | Rear right lumbar support switch |
| 4 | E | Signal, upper chamber | Rear right lumbar support switch |
| 5 | M | Ground | Ground connector |
| 6 | Not used | ||