| Number | X-pin, colour | Description |
|---|---|---|
| X01155 | 4-pin, bordeaux | Component connector |
| X01154 | 3-pin, black | Component connector |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Component ground | Heating and A/C control module |
| 2 | A | Signal, photosensor | Heating and A/C control module |
| 3 | A | Signal, photosensor | Heating and A/C control module |
| 4 | E | Component supply | Heating and A/C control module |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Voltage supply terminal 30 | Fuse F28 |
| 2 | Not used | ||
| 3 | M | Ground activation | General module |