Characteristic curve and setpoint values
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 frequency of the PWM signal of 50 to 150 Hz corresponds to an ethanol content of 0 % to 100 % with an accuracy of ±5 %. Frequencies between 170 and 190 Hz are reserved for ethanol sensor faults. The temperature is also transferred with the pulse-width modulated signal as part of the duration of the low signal. In this process, a low signal duration of 1 ms corresponds to - 40 °C and a low signal of 5 ms corresponds to 125 °C.
| Item | Explanation |
|---|---|
| 1 | PWM signal frequency |
| 2 | Ethanol content curve |
| 3 | Percent |
Note the following specified values for the ethanol sensor:
| Variable | Value |
|---|---|
| Supply voltage | 9 to 18 volts |
| Maximum fuel pressure | 15 mA |
| Fuel temperature | -40 °C to 130 °C |
| Temperature range | -40 °C to 125 °C |