What is the voltage of the camshaft position sensor for the Bestune B70 engine?
2 Answers
The voltage of the camshaft position sensor for the Bestune B70 engine is 12V. Introduction to the camshaft position sensor: The phase sensor is a general term for the camshaft position sensor and the crankshaft position sensor, serving as an important basis for determining the engine ignition timing. The phase sensor detects the engine valve timing by measuring the rotation angle of the camshaft. Classification of camshaft position sensors: Based on structure and waveform, they can be divided into magnetic and Hall-effect types. Magnetic sensors output a sine wave, while Hall-effect sensors output a square wave.
As an experienced mechanic, I know the voltage of the camshaft position sensor is crucial. For the Besturn B70, the sensor's reference voltage is typically set around 5 volts because it connects to the 5V power line of the Engine Control Unit (ECU). If the voltage deviates significantly—such as dropping below 4.5V or exceeding 5.5V—it can easily trigger issues like the check engine light, difficulty starting, or even engine stuttering. You can measure it with a multimeter: disconnect the connector, place the red probe on the signal wire and the black probe on the ground wire, then check if the reading stabilizes near 5V. Common problems include aging wiring or internal sensor shorts, leading to unstable voltage. During routine maintenance, inspect the connector for looseness. If abnormalities are detected, replacing the sensor is advisable. Remember, voltage issues can impact fuel efficiency, and long-term neglect may increase repair costs.
