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fuel level sensor a circuit low input
What is the problem with the low input voltage of the fuel level sensor circuit? Damage to the valve position sensor will cause engine jitter and unstable idle speed . The most obvious symptom is unstable idle speed. When accelerating rapidly, you will feel weak power , or you will not be able to accelerate . If the throttle is damaged, the engine computer cannot correctly receive the signal of throttle opening, resulting in the failure to accurately adjust the fuel injection quantity and ignition time. In serious cases , the engine may not be started !
It is also possible that the throttle valve is dirty . First of all , when the throttle position sensor voltage of the car is low , it is generally considered that this fault code is caused by the internal fuel level sensor a circuit low input caused by the dirty throttle. Usually, this kind of fault usually occurs in older vehicles or vehicles with poor fuel . Generally , cars with a mileage of more than 150000 kilometers tend to appear in a concentrated manner. Solution: clean the throttle valve . Another case is that the throttle position sensor itself fails . The probability of failure of the throttle position sensor is relatively low, because the operation of the throttle position sensor is very simple . It only needs to simply sense the positions of two pairs of contacts . But if the quality is not good , it is also very easy to break down . Solution : replace the throttle position sensor .
Read the fault code with the decoder, install the data stream decoder , turn on the ignition switch , read the fault code with the decoder , and read the throttle sensor voltage parameter (0.16v) . Then check the 5V voltage of throttle position sensor . Check the harness connector of the throttle position sensor for poor contact, disconnect the negative pole of the battery , remove the computer connector , test the open circuit of the signal wire and ground wire of the throttle position sensor and the power control module circuit, check the short circuit of the signal wire of the throttle position sensor , determine the fault and deal with the fault. System reset check , record fault data , clear fault codes , operate the vehicle and perform performance test.
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