| Number | X-pin, colour | Description |
|---|---|---|
| X6257 | 4-pin, Black | Plug connector Knock sensor |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Sensor 1 signal | DME control unit |
| 2 | M | Shield, knock sensor | DME control unit |
| 3 | A | Sensor 2 signal | DME control unit |
| 4 | M | Shield, knock sensor | DME control unit |