What are the symptoms if the crankshaft position sensor is broken?
1.The crankshaft position sensor is generally installed on the distributor. It is one of the most important sensors in control systems. Its function is to detect the engine speed, so it is also called a speed sensor to detect the top dead center position of the piston, so it is also called a top dead center sensor. Including detecting the top dead center signal of each cylinder used to control ignition to control the sequential fuel injection:
a.The engine cannot start due to a fault of the magnetoelectric induction crankshaft position sensor. When checking the engine condition, it was found that the ignition was too late and was the real reason why the engine could not start. The solution is to reconnect the wiring, readjust the distributor, and check the ignition timing.
b.Hall effect type Hall effect type crankshaft; the function of the crankshaft position sensor is to control the ignition timing of the engine and determine the signal source of the crankshaft position. The crankshaft position sensor is used to detect the piston top dead center signal and the crankshaft angle signal. It is also a measurement The signal source for engine speed detection.
The judgment method of the crankshaft position sensor is as follows:
1. Detect the resistance of the crankshaft position sensor, unplug the wire connector, and use a multimeter to measure the resistance between the terminals on the sensor. Replace the detection of the output signals of the two crankshaft position sensors and unplug the cable of the crankshaft position sensor; the function of the crankshaft position sensor is to detect the engine speed and the top dead center position of the piston, including detecting the top dead center signal of each cylinder, for control The top dead center signal of the ignition control sequence is used to inject fuel into the first cylinder. The crankshaft position sensor is usually installed in the distributor and is one of the most important sensors in the control system. Usually required; the crankshaft position sensor is the signal source that controls engine ignition timing and determines crankshaft position. The crankshaft position sensor is used to detect the piston top dead center signal and crankshaft angle signal. It is also used to measure the crankshaft speed and angle of the engine, determine the position of the crankshaft and transmit the detection results to
2. The crankshaft position sensor can detect the engine speed, determine the fuel injection amount and ignition advance angle, and prevent the fuel injection amount from being shortened. The angle determines the piston position to determine ignition; it is installed on the clutch housing of the gearbox, located behind the left side of the engine block. The crankshaft position sensor is fixed with two bolts, and is padded on the ground of the crankshaft position sensor with tape or cardboard. to adjust the depth of the sensor. Once the engine is started and the crankshaft position sensor is installed, the paper pad is redundant; the purpose of the crankshaft position sensor is to determine the position of the crankshaft, that is, the angle of rotation of the crankshaft. It is required in conjunction with the camshaft position sensor to determine basic ignition timing. We all know that the engine starts firing at the end of the compression stroke, so how does the engine computer know which cylinder to fire?
3. The photoelectric crankshaft position sensor is generally installed in the distributor and consists of a signal generator and a signal plate with a light hole. The signal disk rotates together with the photoelectric distribution shaft. There are 360-degree photo-etched slits on the outer ring of the signal plate. There are 6 light holes slightly inside the crankshaft angle 1 signal, evenly distributed at intervals of 60°, resulting in a crankshaft; the crankshaft position sensor is usually installed in the distributor and is one of the most important sensors in the control system. Its function is to detect the engine speed, so it is also called a speed sensor to detect the top dead center position of the piston, including detecting the top dead center signal of each cylinder. It is used to control ignition and top dead center. It is used to control the first step of the sequential fuel injection crankshaft. Cylinder signal; a. The crankshaft position sensor can detect the engine speed, determine the fuel injection volume and ignition advance angle, and avoid the reduction of fuel injection volume. b. The crankshaft position sensor can detect the reference position of the engine reference cylinder and determine the cylinder sequence. Any operating position; the function of the crankshaft position sensor is to detect the engine speed, so it is also called a speed sensor to detect the top dead center position of the piston, so it is also called a top dead center sensor, including the detection of top dead center signals for each cylinder to control ignition. Controls the top dead center signal of the first cylinder of sequential injection. Characteristics of sensors include miniaturization and digitization.
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4. The crankshaft position sensor, also called the engine speed sensor, is used to detect the crankshaft angle and engine speed signals and transmit them to the computer to determine the injection time and ignition time. Most are installed behind the pulley at the front end of the crankshaft; a signal generator that determines the position of the crankshaft during ignition, and its function is to determine the position of the crankshaft. It can detect the piston top dead center signal and the crankshaft angle signal, and transmit the detected signals to the ECU to control the ignition timing and fuel injection timing. In addition, it can also detect engine speed, also known as; two-wire magnetoelectric passive sensor detection method 1. Start the vehicle and observe whether the tachometer fluctuates. If not, it is abnormal or use a diagnostic tool to check the crankshaft data flow at startup. , if the speed of the data stream is larger than 200 at startup, it will be abnormal if it is zero. The problem can be solved by replacing the crankshaft position sensor. It is used to detect the piston top dead center and crankshaft angle signals, input into the engine ECU to control ignition timing and fuel injection timing, and is also a signal source for measuring engine speed.
Post time: Mar-08-2024