What is the primary function of a Throttle Position Sensor (TPS)?

The primary function of a Throttle Position Sensor (TPS) is to report engine load to the Engine Control Module (ECM). The TPS provides critical data regarding the position of the throttle plate, which directly correlates with how much air is entering the engine. This information helps the ECM determine the appropriate amount of fuel to inject, ensuring optimal air-fuel mixture for combustion based on the current demand for power and efficiency. By knowing the throttle position, the ECM can make real-time adjustments to fuel delivery and other parameters, which is essential for maintaining performance and emissions standards.

While managing fuel flow is important, it is indirectly influenced by the TPS through its input to the ECM. Similarly, while ignition timing is crucial for engine performance, the TPS does not have a direct function in regulating it, as ignition timing is usually controlled by other sensors and systems within the engine management system. Measuring exhaust temperature is a function associated with different sensors designed for that purpose, and not the TPS. Thus, understanding the role of the TPS is integral to grasping how modern engine management systems operate.