The ECM, also known as the engine control unit (ECU), is responsible for controlling various aspects of the engine's performance, such as fuel injection, ignition timing, and emission control.

One key function of the ECM in the Toyota Camry is to monitor the engine's sensors and ensure that the engine is running smoothly and efficiently. The ECM constantly collects data from various sensors, such as the oxygen sensor, mass airflow sensor, and throttle position sensor, to determine the optimal fuel-air mixture and ignition timing for the engine. This data helps the ECM adjust the engine's performance in real-time to maximize fuel efficiency and reduce emissions.

Additionally, the ECM in the Toyota Camry is programmed with specific performance maps that dictate how the engine should respond to different driving conditions. For example, the ECM will adjust the fuel injection and ignition timing settings when the vehicle is accelerating, cruising, or idling to optimize performance and fuel efficiency.

In the event of a malfunction or sensor failure, the ECM in the Toyota Camry is equipped with diagnostic capabilities that will trigger the check engine light on the dashboard. This warning light alerts the driver to a potential issue with the engine's performance and prompts them to seek service from a qualified technician.

Overall, the engine control module in a Toyota Camry plays a vital role in ensuring the engine runs smoothly, efficiently, and reliably. Its sophisticated programming and monitoring capabilities make it an essential component of the vehicle's overall performance and longevity.

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