| Number | X-pin, color | Description |
|---|---|---|
| X638 | 6-pin, black | Connector Electrical fuel pump (EKP I) |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Ground point |
| 2 | E | Signal Fuel pump | Fuel pump relay |
| 3 | Not used | ||
| 4 | E | Sensor ground I | Integrated instrument cluster control module (IKE) |
| 5 | Not used | ||
| 6 | A | Fuel tank contents I | Integrated instrument cluster control module (IKE) |