What are the symptoms of a faulty throttle pedal sensor?
1 Answers
When an electronic throttle pedal malfunctions, symptoms such as abnormal noises when stepping on it or the pedal not returning to its original position may occur. Most electronic throttle pedal failures are due to a faulty internal throttle pedal sensor. If the throttle pedal sensor fails or is damaged, the malfunction indicator light will illuminate, and the ECU will be unable to detect the throttle position. This can lead to unstable idle speed, throttle sticking, unresponsive acceleration, and other issues, rendering the vehicle unusable. The role 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 multiple vehicle performance evaluation indicators such as power, comfort, and fuel economy 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 the sensor wiring harness for any breaks or disconnected connectors. If damage is found, replace the sensor directly.
