What does the TC light mean?

1 Answers
RebeccaLee
07/30/25 3:02am
TC light stands for Traction Control System. When the TC light is on, it indicates that the Traction Control System is active. During vehicle acceleration, if the system detects a significant speed difference between the driving wheels and non-driving wheels, the computer will immediately determine that the driving force is excessive. It then sends a command signal to reduce the engine's fuel supply, thereby decreasing the driving force and reducing the slip rate of the driving wheels. The working principle of TC involves replacing the mechanical connection between the accelerator pedal and the throttle with an electronic throttle control device. Sensors transmit the accelerator pedal's information to the ECU, which generates a control voltage signal based on the received data. The servo motor then adjusts the throttle according to this signal, reducing the throttle opening and controlling wheel slip. For vehicle owners driving in rainy or snowy conditions, this system can help minimize occurrences of wheel slip or loss of control.
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