1, detection method:

Camshaft sensors are generally three-wire Hall sensors, including power line 12v or 5v, signal line and ground line. Pull out the plug, turn the key to the second gear, and measure with a voltmeter to ensure that the power cord has voltage output. Use one meter to determine the ground wire, connect one meter stick to the determined power wire with a voltage gear, and connect the other meter stick to the other two wires. The ground wire measures voltage, and the rest are signal wires. At this point, turn off the key lead-out signal line, plug in the power supply and start the engine. Measure the signal wire and ground wire to see if there is a signal voltage whose output voltage should be less than the power supply voltage. If not, the sensor is basically broken. Attention (check whether the signal teeth on the camshaft are in good condition, whether there are sundries between the camshaft sensor and the signal teeth, and whether the clearance is normal. ) I hope it will help you and I hope it will be adopted.