Measurement Method of Crankshaft Position Sensor?

1 Answers
DiJoy
07/30/25 7:32am
1. Observe the engine speed displayed on the dashboard. The engine speed signal comes from the crankshaft position sensor. If the sensor has no signal output, the engine tachometer will definitely not move. 2. Use a multimeter for testing. Connect the two probes of the multimeter to any two signal wires of the magnetic crankshaft position sensor. Set the multimeter to the 20V range at idle speed. The higher the measured voltage, the higher the speed. 3. Use an oscilloscope for testing. Adjust the oscilloscope voltage to 14V and the time to 10mS. Start the vehicle to observe the AC signal waveform. 4. Use a diagnostic scanner to read the engine speed data stream.
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