Categorization：Product Information
Measure the voltage between terminals SG-3 and TS of the air conditioning controller with the ignition switch turned off. When the sensor is illuminated by an electric light, the voltage should rise as the inspection light moves away from the sensor, but should not exceed 4.0V. ② When the sensor is covered by a cloth, the voltage should be 4.4 to 4.5V, or the next inspection should be performed. (2) resistance detection Remove the sunlight sensor thermistor, measure the resistance between the sunlight sensor plug terminal 1 and terminal 2: measured with a cloth covering the sunlight sensor, the resistance should be infinite (not on); remove the cloth on the sunlight sensor and illuminate the sensor with a light, and the measured resistance value is about 10kΩ (on). If this is not the case, the sunlight sensor should be replaced. (3) Inspection of the wiring plug between the sunlight sensor and the controller Remove the plug of the sunlight sensor and the plug connecting the sunlight sensor and the air-conditioning controller, and inspect the wiring plug to see if it is disconnected. To check if the wiring connector is disconnected, set the multimeter to 200Ω, and measure the resistance between the same wires of the two connectors.
It can be detected by the Hall-type detection method. Hall crankshaft position sensor detection method has a common point, that is, mainly through the measurement of the presence or absence of output electrical pulse signal to determine whether it is good. Crankshaft position sensor and ECU have three leads connected, one of which is the ECU to the sensor voltage power line, the input sensor voltage of 8V; another is the sensor's output signal line, when the flywheel gear groove through the sensor, the Hall sensor output pulse signals, the high potential of 5V, low potential of 0.3V; the third is to the sensor's grounding line. Sensor power supply, voltage test ignition switch is placed in the "ON", with a multimeter voltage measuring ECU terminal voltage should be 8V, in the sensor wire connector "A" terminal to measure the voltage should also be 8V, otherwise the power supply, line breaks or connectors Poor contact. Extended information: Crankshaft position sensor: 1. The role of the crankshaft position sensor is to determine the position of the crankshaft, that is, the crankshaft angle. It is usually to work with the camshaft position sensor to determine the basic ignition moment. 2. We all know that the engine is in the compression stroke at the end of the beginning of the ignition, then the engine computer is through the crankshaft position sensor and the camshaft position sensor signals to calculate the crankshaft position sensor, you can know which cylinder piston is in the upper end of the stop point
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