However, it's not just a simple on/off switch. Several factors contribute to the system's activation and functioning:
* Power supply: The ignition switch provides battery power to the Electronic Control Unit (ECU) and its associated sensors.
* Crankshaft Position Sensor (CKP): The CKP detects the rotation of the crankshaft. This signal is crucial for the ECU to synchronize fuel injection and ignition timing. Without this signal, the system won't function properly.
* Camshaft Position Sensor (CMP) (on some models): Similar to the CKP, but monitors camshaft rotation for more precise timing.
* Other sensors: Numerous other sensors (e.g., air mass flow, coolant temperature, manifold pressure) provide data to the ECU to adjust fuel delivery and other parameters. These sensors need to be functioning correctly for the system to operate.
In short, while the ignition switch is the primary activator, the system's full functionality relies on the presence of power and functioning sensors providing the ECU with the necessary data to control the engine. A fault in any of these components will result in either the system not activating or malfunctioning.
