| Number | X-pin, colour | Description |
|---|---|---|
| X18165 | 4-pin, Black | Plug connector Passenger's seat belt buckle switch |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Ground connector |
| 2 | Not used | ||
| 3 | A | Belt signal | Airbag diagnostic module |
| 4 | E | Voltage supply terminal R | Fuse F43 |