Fuel Tank Pressure Sensor Signal Circuit
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NOTE: This special Video-Course Sub-Series is designed to gain knowledge of the effects a circuit has on the rest of the ECU and how it reacts to such INPUT-Values.
The fuel tank pressure sensor is used by the E C M to run the EVAP monitor by sealing the fuel vapor EVAP system and testing for a vacuum or pressure drop.
Seen here to the left is the voltage regulator of Zener and resistor series combination. To the far right is the actual pressure sensor, denoted by a capacitor resistor symbol. The small voltage output of the sensor is fed into the transistor base circuit. The transistor then uses the 5 volt ....
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