Throttle Position sensor

TPS (Throttle Position Sensor)

Checking the Throttle Position sensor
What type of TPS is this?
This is the Potentiniometer type sensor which im testing in this experment.
The diffrencey with switch is , the switch type is usually square size and potentiniometer is round type.

Explaine its iternal operation and why voltge changes?

TPS is mounted to the throttle body withe the throttle plate shaft runing into the sensor when the throttle plate is open rotating the sensor internal varible resistor. As the the throttle opens the voltage increase.
We can see on this diagram electricety of these sensor operate the same way a wiper arm inside the sensor is mecanically conect to moving part, as the parts move tthe wiper arms also move the wiper arm is also contact with a resitor , when wiper arms move on risetor the sgnal voltage output change.
In this point contact the avalible voltage is the signal voltage , and this indicate position .
Closer the wiper arm gets to Vc voltage, the higher sgnal voltge output of TPS.

 Now i had connect a 5 volts power supplay and get diffrents output voltage in diffrent angles.

Throttle angle	Voltage output
closed	0.347 V
25 degree	1.58 V
40 degree	1.97 V
65 degree	2.2 V
80 degree	2.60 V
Fully open	3.83 V

Throtlle position Angle