The camshaft position sensor communicates the position and speed of the camshaft to the ECM to ensure proper timing of fuel injection and ignition as well as VVT operation. NTK's robust circuit board design increases durability and precision-wound, coated-copper windings increase longevity. The magnet size and strength in this sensor is optimized for precise signal output. NTK cam position sensors are 100% thermo-shock and vibration tested to ensure the best performance in extreme conditions.