What are the symptoms of a damaged throttle pedal position sensor?

[Greg]

When an electronic throttle pedal malfunctions, symptoms may include abnormal noises when pressing the pedal or the pedal not returning to its original position. Most electronic throttle pedal failures are caused by internal throttle pedal sensor malfunctions. If the throttle pedal sensor fails or is damaged, the malfunction indicator light will illuminate. The ECU will be unable to detect the throttle position, leading to unstable idle speed, throttle sticking, unresponsive acceleration, and other issues, rendering the vehicle inoperable. Function of the electronic throttle pedal: As a critical component of the electronic throttle control system, the performance of the electronic throttle pedal not only affects the vehicle's power, comfort, fuel economy, and other performance evaluation metrics but also directly impacts driving safety. How the electronic throttle works: The electronic throttle uses a position sensor to transmit signals indicating the depth and speed of pedal depression. These signals are received and interpreted by the ECU, which then issues control commands. The throttle valve adjusts its opening angle accordingly, either quickly or gradually. Repairing the throttle pedal sensor: If the throttle pedal sensor fails, it should be inspected and repaired promptly. Remove the throttle assembly, locate the signal output wires corresponding to the sensor, and use a multimeter in resistance mode to measure the circuit. Move the pedal and observe changes in the meter readings to determine if there is a fault. Check for any broken wires or disconnected connectors in the sensor harness. If damage is found, replace the sensor directly.