| Number | X-pin, color | Description |
|---|---|---|
| X1508 | 6 -pin, Black | Connector Left rear seat lumbar support switch |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Signal, upper chamber | Left rear seat lumbar support valve block |
| 2 | M | Ground | Ground splice |
| 3 | A | Signal, actuator | Passenger's seat lumbar support motor |
| 4 | E | Terminal 30 voltage supply | Fuse F53 |
| 5 | A | Signal, pump | Left rear seat lumbar support valve block |
| 6 | A | Signal, lower chamber | Left rear seat lumbar support valve block |