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audi a4 fuel level sensor location
About the audi a4 fuel level sensor location , it is usually in the fuel tank, together with the fuel pump and fuel filter . The fuel gauge sensor is wired . The gasoline gauge is connected to the oil float in the oil tank , which is usually done on the gasoline pump . The oil level sensor is installed in the oil pan and belongs to the instrument module .
The audi a4 fuel level sensor location is on the electric fuel pump to sense the amount of fuel in the fuel tank . The fuel level sensor is a part that detects the position (height) of the oil in the container by changing the capacitance between the sensor housing and the sensing electrode after the oil enters the container , and transforming this change into a current change .
The fuel level sensor is put to know the amount of fuel in the fuel tank . This test checks the operation of the fuel level sensor . It is important for the fuel level gauge. It is indispensable.
(1) Turn on the disconnect switch and turn the key switch to on .
(2) Observe the fuel level gauge .
(3) Disconnect the fuel level sensor from the machine harness .
(4) Install the wire from contact 1 to contact 2 of the harness connector of the fuel level sensor .
Note : the correct resistance of the fuel level sensor is 5 ~ 90 .
If the oil level of the fuel gauge remains unchanged . The fuel level sensor is correct. Skip to step two. If the oil level on the fuel gauge is full, it indicates that the fuel level sensor is faulty . Please replace the fuel level sensor. This test checks the wiring harness for the fuel level sensor .
(1) Ground contact 29 of connector 2 .
(2) Observe the fuel level gauge .
The oil level on the fuel gauge is not expected to change.When the oil level on the fuel gauge is full , it indicates that there is an open circuit fault in the harness wire.When the liquid level of the fuel gauge does not change , it indicates that the monitor or controller is faulty . Please replace the monitor or controller .
The fuel level sensor uses the principle of a buoy and variable resistance in the fuel tank to transmit the fuel level in the fuel tank to the electronic control module in the form of electrical signal. If the electronic control unit (ECU) finds that the fuel level input signal is out of the calibrated range, this fault code will appear.
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