Which function does traction control perform when a loss of traction is detected?

Traction control is a safety feature in vehicles designed to prevent wheel spin during acceleration, which can often occur in slippery conditions. When traction control detects a loss of traction, it primarily engages throttle control. By reducing the engine's power to the wheels that have lost grip, it helps to regain traction and stabilize the vehicle. This function effectively allows the driver to maintain better control of the vehicle and enhances safety.

In contrast, fuel injection modulation is more related to engine performance and efficiency rather than specifically addressing traction loss. Increased acceleration would exacerbate a loss of traction rather than correct it, potentially leading to a dangerous situation. An automatic lane change feature pertains to vehicle navigation and safety but does not directly relate to the loss of traction and the control mechanisms employed to mitigate that issue. The focus of traction control is to ensure that traction is maintained, making throttle control the correct and most relevant function in reaction to a loss of traction.