How to Test the Camshaft Position Sensor for Faults?

[AlexisLynn]

Methods to test the camshaft position sensor for faults: 1. Use a multimeter to check the sensor's resistance. Under normal conditions, the resistance should not exceed 1.5 ohms. If the resistance is too high or infinite, the sensor is faulty and needs repair or replacement; 2. While the engine is running, use an oscilloscope to measure the signal waveform between the signal output and ground of the magnetic camshaft position sensor. The waveform on the oscilloscope should be a sine wave with an amplitude between 0 and 5V; 3. Turn on the ignition switch, unplug the sensor's wiring connector, and connect the multimeter's positive and negative leads to terminals 1 and 3, respectively. When the ignition switch is turned on, the voltage should be above 4.5V. If the voltage is zero, it indicates a short circuit in the wiring harness or a fault in the ECU.