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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 575 (Functional Descriptions - F25 - Cooling System, Engine Performance) >> Engine Performance - Functional Description >> Throttle actuator (Ver.2) >> Structure and inner electrical connection

Structure and inner electrical connection

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The hall effect sensors are non-contact sensors. For safety reasons, the hall effect sensors supply an opposing signal (redundancy). The second sensor supplies the mirrored voltage values at all operating points.

Fig 1: Electromotive Throttle Actuator - Circuit Diagram
G09873032Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Hall effect sensor 1
2 Hall effect sensor 2
3 Electromotive throttle actuator with throttle valve
4 Electronic component with evaluation electronics
PIN REFERENCE

Pin Explanation
SIG 1 Hall effect sensor signal 1
U Voltage supply for hall effect sensors
PWM 1 Activation, electromotive throttle actuator
SIG 2 Hall effect sensor signal 2
PWM 2 Activation, electromotive throttle actuator
Kl. 31 Terminal 31, ground connection (DME)