| Number | X-pin, colour | Description |
|---|---|---|
| X82 | 4 -pin, Black | Plug connector Auxiliary fan motor |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Ground point |
| 2 | E | Activation Auxiliary fan stage 1 | Auxiliary fan stage 1 relay |
| 3 | Not used | ||
| 4 | E | Activation Auxiliary fan stage 2 | Auxiliary fan stage 2 relay |