| Number | X-pin, colour | Description |
|---|---|---|
| X671 | 5-pin, black | Plug connector Blower output stage |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Negative activation | Blower motor |
| 2 | E | Terminal 15 via relay for blower output stage | Heating blower relay |
| 3 | E | Voltage supply Blower | Heater/air conditioner control unit |
| 4 | M | Ground | Ground point |
| 5 | A | Voltage supply Blower motor | Blower motor |