| Number | X-pin, colour | Description |
|---|---|---|
| X6304 | 9 -pin, Black | Plug connector Secondary air pump relay |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E | Voltage supply terminal 30 | Connector terminal 30 |
| 3 | Not used | ||
| 4 | A | Signal Secondary air pump relay | DME control unit |
| 5 | M | Terminal 31 | Ground point |
| 6 | A | Supply for secondary air pump | Secondary air pump |
| 7 | Not used | ||
| 8 | E | Voltage supply terminal 30 | Fuse F31 |
| 9 | Not used | ||