Structure and inner electrical connection
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
The alternator has a separate terminal for the positive battery lead. The control variables (e.g. nominal voltage of alternator) are transferred to the controller via the serial data interface (BSD or LIN).
The regulator is attached to the back of the alternator.
| Index | Explanation |
|---|---|
| 1 | Electronic component with controller |
PIN REFERENCE
| Pin | Explanation |
|---|---|
| BSD/LIN | serial data interface (BSD or LIN) |
| U | Positive battery cable |