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 ethanol sensor is connected via a 3-pin electrical connector.
The sensor receives its power supply from the engine management ECU. The signal from the ethanol sensor is transmitted by pulse width modulation.
| Item | Explanation |
|---|---|
| 1 | Ethanol sensor |
| 2 | Electronic analyzer module with sensor cell |
| 3 | Temperature sensor |
PIN REFERENCE
| Pin | Explanation |
|---|---|
| PWM | Ethanol content and temperature signal |
| 5 V | 5 Volts, supply voltage |
| Kl. 31 | Ground connection (Terminal 31) |