What is the detection method for the throttle position sensor?

1 Answers
MacMaria
07/29/25 5:02pm
Here are the detection methods for the throttle position sensor: 1. Check the power supply voltage: Unplug the connector from the throttle position sensor, turn on the ignition switch, and measure the voltage between Vcc and the idle contact, as well as between Vcc and the full throttle contact. The voltage should be between 4.5-5.5V. If it does not meet the requirement, check the ECU connection circuit. If the voltage is within the required range, proceed to check the throttle potentiometer resistance. 2. Check the resistance: Unplug the throttle potentiometer connector and measure the resistance between Vcc and the idle contact, which should be 1.5~2.6kΩ. Then measure the resistance between Vcc and VTH; at idle, this value should be 0.75~1.3kΩ. Slowly rotate the throttle lever to the full open position, at which point the potentiometer resistance should rise to a maximum of 3.6kΩ. If any of these values do not meet the specified range, it indicates a fault in the throttle position sensor, and the sensor should be replaced.
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