Individual Operation
WARNING: This page is about a different car, the 2024 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
The exhaust camshaft position sensor consists of a permanent magnet and MRE IC. When engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. Due to the changing magnetic field, the voltage from the sensor changes.