| Number | X-pin, colour | Description |
|---|---|---|
| X638 | 8-pin, black | Plug connector Electric fuel pump |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Ground point |
| 2 | E | Fuel pump Via relay | Fuel pump relay 1 |
| 3 | Not used | ||
| 4 | A | Signal, fuel tank sensor ground (left) | Instrument cluster control unit |
| 5 | Not used | ||
| 6 | E | Signal, fuel tank sensor (left) | Instrument cluster control unit |