| Number | X-pin, color | Description |
|---|---|---|
| X905 | 5-pin | Plug connector Blower switch |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Voltage supply | Heating blower relay Down 1998_09 Fuse F37 |
| 2 | A | Heater blower Stage 1 | Blower ballast resistor |
| 3 | A | Heater blower Stage 2 | Blower ballast resistor |
| 4 | A | Heater blower Stage 3 | Blower ballast resistor |
| 5 | A | Heater blower Stage 4 | Blower ballast resistor |