Modular throttle position sensor

( A ) structural features modular TPSToyota used cars combined throttle position sensor as shown in Figure 2-35a , the principle of the circuit shown in Figure 2-35b . It mainly consists of a variable resistor and the sliding contacts , throttle shaft , idle contact , shell composition . Variable resistor film resistor formed on Engine Coolant Temperature Sensor board , the variable resistor wiper rotates together with the throttle shaft , sliding arm connected to the output terminal VTA ( 2 ) Combined Combined TPS TPS output characteristics of the output characteristics shown in Figure 2-36 . When the throttle is closed or opening is less than 1.2 . When the idle contact is closed, its output terminal IDL output low (0V); when the throttle opening is greater than 1.2 . When the idle contact is disconnected , the output terminal IDL output high (5V). When the throttle opening change , the variable resistor wiper will immediately rotate the throttle shaft , will be in sliding contact arm slides on film resistor , the sensor output terminal VTA and E, the signal voltage between the ensuing change , as shown in Figure 2-35 , the greater the throttle opening degree , the higher output voltage . The linear sensor output signal after A / D converter into a digital signal and then enter the ECU.