What is the primary function of the ECU in a motorcycle?

The primary function of the ECU (Engine Control Unit) in a motorcycle is to manage critical engine functions, including fuel injection and ignition timing. The ECU is responsible for processing various inputs from sensors located throughout the motorcycle, such as those monitoring air temperature, throttle position, and engine speed. By interpreting this data, the ECU optimally controls the fuel delivery and ignition timing to achieve efficient engine performance, reduce emissions, and enhance overall rideability. This management ensures that the motorcycle runs smoothly and efficiently under varying conditions and loads, which is crucial for both performance and reliability.

Other functions mentioned, such as controlling lighting, adjusting suspension, or regulating tire pressure, are typically managed by separate systems or controllers within the motorcycle. Therefore, the focus of the ECU is specifically on engine management, making the correct answer centered around its role in overseeing the essential components for engine operation.