Structure principle and detection method of mechanical (direct acting) throttle valve

Evaueofthesensor may be abnormal, and the sensor may need to be replaced. The idle throttle position sensor detects that the ignition switch is turned on, the multimeter probe is inserted into the eighth terminal lead of the idle throttle position sensor socket (see Figure 2-22), and the accelerator pedal is slowly stepped to the bottom from the closed position. The voltage reading of multimeter should rise slowly with the increase of throttle opening. On the contrary, with the gradual closing of the throttle, the voltage reading of the multimeter should gradually decrease, and its signal curve is shown in Figure 2-23. Otherwise, the value of the sensor may decrease. This may need to be replaced. Figure 2- 19 Inspection of Idle Control Device Figure 2-20 Inspection of Throttle Position Sensor Figure 2-2 1 Throttle Position Sensor Signal Curve Figure 2-22 Inspection of Idle Throttle Position Sensor Figure 2-23 Signal Curve of Idle Throttle Position Sensor