| Number | X-pin, colour | Description |
|---|---|---|
| X1644 | 4-pin, Natural | Plug connector Control unit, radio-operated passenger compartment protection |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Terminal 31 Power ground | Ground connector |
| 2 | A | Interface to tilt alarm sensor | Connector, tilt alarm sensor control |
| 3 | A | Interior protection | General module |
| 4 | E | Terminal 30 | Fuse F48 |