The camshaft sensor is also called a synchronous signal sensor. It is a cylinder judgment positioning device. Enter the camshaft position signal to the ECU. It is the main control signal of ignition control.There are two types: crankshaft position sensor and camshaft position sensor.
Camshaft sensor detection
1. When there is a problem with the camshaft position sensor, we can first check whether the resistance of the coil of the camshaft sensor failed.First of all, we need to disconnect the ignition switch. We only need to unplug the tactors plug from the socket, and then check the resistance value of each port with the resistance level of the universal meter.If it meets the standard value, we need to replace a sensor assembly.
Principle of camshaft sensor
The working principle of the photoelectric sensor is shown in the figure.The signal disk is installed between the light -emitting diode (LED) and the light -sensitive transistor (or the light -sensitive diode).When the transparent holes on the signal disk rotate between the LED and the photoresum transistor, the light emitted by the LED will be irradiated to the light sensor crystal.); When the shading part on the signal disk is rotated between the LED and the photoresum transistor, the light emitted by the LED cannot be illuminated on the photoresum transistor.Essence
Camaxar sensor price
The first editor introduces the Nissan Qijun T30 crankshaft position sensor. This sensor can accurately report the signal of fuel injection. This is also small to consume the engine. That is to say, this sensor mainly protects the engine to protect the engine.Everyone also knows that a car is good or bad, and the engine is crucial, so if such a sensor is wrong, everyone must replace it in time.However, it may be cheaper to buy in ordinary auto parts stores, but its quality dare not guarantee.
Camshaft sensor failure
If you want to detect the Hall -style camshaft position sensor, you need to detect it according to the principle of the Hall effect.When a current passes through the Hall component, if the direction of the current and the direction of the magnetic field of the Hall component are perpendicular to each other, the two sides of them will generate a trace voltage, which is a Hall voltage by a physicist.To determine whether the Hall sensor has a signal, you only need to use a DC voltage to detect whether the average voltage of the Hall sensor is fixed.If you want to survey the optical camshaft position sensor, you can disconnect the ignition switch, then use the wire of the sensor to connect to the plug, and then use the multimeter to connect to the 3 end, and then use the voltage meter for detection.If there is no bad, the voltage should be above 4.5V, but if the voltage is 0, it proves that the sensor fails.
The role of camshaft sensor
As an important part of a car work, the camshaft sensor plays an important role and is specifically manifested in two aspects.First, the camshaft sensor can control our ignition system in time. The camshaft sensor can control our ignition command according to the actual situation of our cylinder, so that we will be more safer when using a car.Second, the camshaft sensor can play an emergency ignition. Sometimes when the crankshaft sensor of our car will fail, at this time our camshaft sensor will play a role, and the emergency ignition operation can be performed.

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