What are the symptoms when the accelerator pedal position sensor is damaged?
1 Answers
When the electronic accelerator pedal malfunctions, symptoms such as abnormal noise when stepping on the pedal or the pedal not returning to its original position may occur. Most electronic accelerator pedal failures are due to internal accelerator pedal sensor malfunctions. If the accelerator pedal sensor fails or is damaged, the malfunction indicator light will illuminate, and 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 unusable. The role of the electronic accelerator pedal: As a key component of the electronic throttle control system, the performance of the electronic accelerator pedal not only affects the vehicle's power, comfort, fuel economy, and other performance evaluation indicators but also relates to driving safety. How the electronic accelerator works: The electronic accelerator transmits signals indicating the depth and speed of pedal depression through the position sensor. 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 accelerator pedal sensor: If the accelerator pedal sensor fails, it should be inspected and repaired promptly. Remove the accelerator assembly, locate the signal output line 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 the sensor wiring harness for open circuits or disconnected connectors. If any damage is found, replace the sensor directly.
