throttle position sensor

There are two different type of tps known as potentiomitre and switching type.Inside a switching type tps has got switch contacts to get the angle and making more voltage at more degrees.The first test i did was testing the voltage at different throttle angle.To do this you need to wire up a power supply of 5v and put a multimeter on the sensor to get the different voltages.

throttle angle        voltage output
0°                           0.396v
25°                         1.451v
50°                         1.68v
75°                         3.9v
85°                         4.1v
90°                         4.28

I draw a graph on the results I got

In the graph you can see if there is more angle it uses more voltage at the bottom of the graph is the degrees and on the left hand side is the voltage

The picture above shows wat ive done to get the readings that i got to form a graph this tps shown above if known as a switching type tps.The tps is the black thing on the left with the 4 wires coming of it.

The next test i did was putting a ohm meter on the tps and change throttle angle to check continuity.There is 3 pins on the tps and they are marked PSW for power switch(wide open throttle) second one is idl for IDL circuit and the 3rd one is E for earth.When i put my ohmeter on this tps I put the black probe in com of the multymeter and the red probe in 10A I place the black probe on the E then when i want to check for continuity with the throtle shut I put the red probe on the IDL.When i had to check for continuity on wide open throttle I put my red probe on the PSW pin.When I tested the continuity at IDL I found that it started of high then droped at 10degrees and stayd the same and.When I tested PSW I started of low and it went up at 80degrees.