Where is the crankshaft sensor located on the Mazda 3 Axela?
1 Answers
The crankshaft sensor on the Mazda 3 Axela is located near the crankshaft pulley. The working principle of the crankshaft position sensor is to provide signals for ignition timing, ignition advance angle, and confirmation of crankshaft position, which are used to detect the piston top dead center, crankshaft angle, and engine speed. The function of the crankshaft position sensor is to determine the position of the crankshaft, specifically the crankshaft angle and engine speed. The measurement method for the crankshaft position sensor is as follows: 1. Check the normal gap between the crankshaft position sensor and the pulse wheel target wheel, which should be greater than 0.5mm and less than 1.2mm. If the pulse wheel is installed incorrectly, being too large or too small, it may cause signal deviation. 2. Turn off the ignition switch, disconnect the crankshaft position sensor connector, and measure the resistance between terminal 1 and terminal 2 of the sensor, which should be between 400-600 ohms. If the value is not within this range, it can be determined that the crankshaft position sensor itself is faulty and should be replaced. The two signal wires of the crankshaft position sensor are insulated from the shield wire. 3. Turn on the ignition switch and measure the voltage between the two signal wires and ground, which should be 1.4V. This is the preset voltage on the signal wires by the engine control unit. When starting the engine, measure the signal voltage of the crankshaft position sensor, which should be close to 1.6V. If there is an open or short circuit inside the sensor, signal wires, or engine control unit, the computer will not be able to receive the crankshaft position signal, resulting in the engine failing to start.
