| Number | X-pin, colour | Description |
|---|---|---|
| X644 | 8-pin, black | Plug connector System lock, rear driver's side |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Motor signal, ZV unit lock | General module control unit |
| 2 | E | Motor signal, ZV unit central arrest | General module control unit |
| 3 | Not used | ||
| 4 | M | Ground | Ground connector |
| 5 | E | Motor signal, ZV unit unlock | General module control unit |
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | E | Signal, rear driver's side door contact | General module control unit |