| Number | X-pin, colour | Description |
|---|---|---|
| X1312 | 20-pin, black | Plug connector Navigation control unit |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E/A | Interface signals | JBIT II |
| 2 | E/A | Interface signals | JBIT II |
| 3 | E/A | Interface signals | Electrochromic interior rear view mirror |
| 4 | E/A | Interface signals | Electrochromic interior rear view mirror |
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | E | Video signal red | Video module |
| 8 | E | Video signal green | Video module |
| 9 | Not used | ||
| 10 | E | Terminal 30 | Fuse F76 |
| 11 | E/A | Interface signals | JBIT II |
| 12 | E/A | Interface signals | JBIT II |
| 13 | Not used | ||
| 14 | Not used | ||
| 15 | Not used | ||
| 16 | Not used | ||
| 17 | E | Video signal blue | Video module |
| 18 | M | Shield | Video module |
| 19 | E | Processed wheel speed, rear right | Dynamic stability control (DSC) |
| 20 | M | Ground | Ground point |