USB Autoscope

Analytics and diagnosctic equipment for automotive industry

Position sensor

Position sensor is a potentiometer with one or two characteristic curves.
Applications:

  • throttle position sensor;
  • accelerator pedal position sensor;
  • air flow sensor;
  • EGR valve position sensor;
  • fuel level sensor;
  • transmission range sensor.

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position_sensor_2

Output voltage waveform from a properly functioning throttle position sensor 

(Mitsubishi Lancer 1.6 2005).

A‑B – throttle valve opening;

C‑D – throttle valve closing.

position_sensor_3

position_sensor_4

Output voltage waveforms from a properly functioning throttle position sensor

(Toyota Avensis 1.8i 2007).

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Output voltage waveforms from a properly functioning throttle position sensor

(VW Passat 1.8TSI 2008).

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Output voltage waveforms from a properly functioning throttle position sensor

(VW Passat 1.8 1991).

position_sensor_7

Output voltage waveform from a malfunctioning  throttle position sensor. The resistor track is worn and the wiper loses electrical contact in certain positions.

position_sensor_8

Output voltage waveform from a malfunctioning throttle position sensor. The resistor track is worn and the wiper loses electrical contact in certain positions.

The USB Oscilloscope program is required for waveform playback. Get the latest USB Oscilloscope program here.