* Wheel Speed Sensors (4): One sensor on each wheel. These are crucial; the system detects wheel slippage by comparing the speed of each wheel. These are located within the wheel hub assemblies.
* Yaw Rate Sensor (1): This sensor measures the car's rotation around its vertical axis. Its location varies slightly depending on the exact model year and configuration, but it's typically found near the center of the vehicle, possibly within or near the rear differential or suspension.
* Throttle Position Sensor (1): This sensor is part of the throttle body and informs the system of the driver's throttle input.
* Brake System Sensors (various): Information about brake pressure and ABS operation is used by the traction control system.
Therefore, you can't pinpoint a single "traction control sensor." If your Trac Control light is on, the problem likely lies within one (or more) of the above sensor systems or the associated wiring, the ABS module, or even the traction control module itself. You'll need a diagnostic scan tool to pinpoint the specific fault code to determine which sensor or component is malfunctioning. A qualified mechanic with access to such a tool is your best bet.
