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104
3.3.10 Throttle Servo Motor
Throttle servo motor are commonly used in electronically controlled engines, and throttle butterfly valves are
usually used. The ECM controls the throttle servo motor according to the accelerator pedal signal to realize the
throttle opening control, which is then monitored by the throttle position sensor and transmits the signal back to the
ECM to achieve closed-loop control.
Use ATO oscilloscope to test the throttle servo motor, the specific operation is shown in Figure 3-36:
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