What does the TC display in a car mean?
1 Answers
When the TC (Traction Control) system is active, a yellow TC light flashes on the dashboard to alert the driver. The Traction Control System, also known as the Track Control System, relies on electronic sensors to detect when the driven wheels' speed is lower than that of the driving wheels. It then sends signals to adjust ignition timing, reduce throttle opening, decrease fuel supply, downshift, or apply braking to prevent wheel slip. Common causes for the TC light to illuminate include: 1. Solenoid valve malfunction; 2. Dirty engine oil clogging the solenoid valve filter; 3. Wear between actuator gears and impellers causing oil pressure leaks triggering the alarm; 4. Throttle body contamination with opening reaching 20%, leading to ECU misdiagnosing TC system failure.