Signal shape 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 DDE furnishes the 5-volt power and the earth connection for the throttle-valve actuator.
A bridge circuit (H bridge) is used to activate the servomotor. This permits activation of the servomotor in the opposite direction. The bridge circuit is monitored diagnostically. H-bridge designates an electrical gearshift with 5 shift elements in the shape of a capital H for shifting between.
| Item | Explanation |
|---|---|
| 1 | Throttle-valve position in % |
| 2 | "Maximum" characteristic curve |
| 3 | "Minimum" characteristic curve |
| 4 | Throttle-valve aperture in degrees |
Please note the following specifications for the throttle-valve actuator:
| Variable | Value |
|---|---|
| Servomotor supply voltage | 5 Volts |
| Activation frequency for servomotor | 1300 Hz |
| Blocking current for servomotor | 4 A |
| Electrical power supply for throttle-valve sensor | 4.5 to 5.5 V |
| Current draw of throttle-valve sensor | 10 mA |
| Operating temperature range for throttle-valve sensor and servo-motor | -40 °C to 140 °C |