| Number | X-pin, colour | Description |
|---|---|---|
| X1312 | 26-pin, yellow | Plug connector Navigation control unit |
| X1313 | 18-pin, blue | Plug connector Navigation control unit |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Reversing light signal | Light module |
| 2 | Not used | ||
| 3 | E | Voltage supply terminal R | Fuse F46 |
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | E/A | Communication link TXD | GPS receiver |
| 9 | E/A | Communication link RXD | GPS receiver |
| 10 | E | Front left wheel speed | ABS/ASC control unit ABS/DSC control unit |
| 11 | E | Front right wheel speed | ABS/ASC control unit ABS/DSC control unit |
| 12 | Not used | ||
| 13 | Not used | ||
| 14 | Not used | ||
| 15 | Not used | ||
| 16 | E/A | Pulse per second | GPS receiver |
| 17 | E/A | Communication link TXDN Acoustic signal | GPS receiver |
| 18 | E/A | Communication link RXDN | GPS receiver |
| 19 | Not used | ||
| 20 | Not used | ||
| 21 | Not used | ||
| 22 | Not used | ||
| 23 | Not used | ||
| 24 | Not used | ||
| 25 | Not used | ||
| 26 | Not used | ||
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Voltage supply terminal 30 | Fuse F69 |
| 2 | Not used | ||
| 3 | E/A | I-bus signal line | I-bus connector |
| 4 | E | Navigation video signal, red | Video module |
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | E | Navigation video signal, green | Video module |
| 9 | E | Acoustic signal | Video module |
| 10 | M | Ground | Ground connector |
| 11 | Not used | ||
| 12 | Not used | ||
| 13 | E | Navigation video signal, blue | Video module |
| 14 | Not used | ||
| 15 | M | Shield | Video module |
| 16 | Not used | ||
| 17 | E | Synchronisation signal | Video module |
| 18 | M | Ground Acoustic signal | Video module |