Telematic Communication Box A231*2B Connector End View
Courtesy of BMW OF NORTH AMERICA, INC. Pin Assignments At Plug Connector A231*2B
| Pin |
Type |
Description /Signal type |
Connection /Measuring information |
| 1 |
E/A |
USB data line |
Head unit |
| 2 |
A |
USB voltage supply |
Head unit |
| 3 |
E/A |
USB data line |
Head unit |
| 4 |
M |
USB ground |
Head unit |