| Number | X-pin, color | Description |
|---|---|---|
| X1452 | 12-pin, natural | Component connector Air supply system |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Terminal 30 | Relay, compressor, air suspension |
| 2 | E | Signal Air supply system | Air suspension control unit |
| 3 | Not used | ||
| 4 | E | Signal Air supply system | Air suspension control unit |
| 5 | E | Signal Air supply system | Air suspension control unit |
| 6 | E | Signal Air supply system | Air suspension control unit |
| 7 | M | Ground | Ground point |
| 8 | Not used | ||
| 9 | Not used | ||
| 10 | Not used | ||
| 11 | E | Signal Air supply system | Air suspension control unit |
| 12 | E | Signal Air supply system | Air suspension control unit |