Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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lemon-manuals.org.ua
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Fuel Tank Pressure Sensor: Description and Operation
The PCM monitors the
fuel tank pressure sensor to detect vacuum decay and excess vacuum during the EVAP system tests. The fuel tank pressure sensor measures the difference between the air pressure (or vacuum) in the tan and the outside air pressure. The PCM supplies a
5 volt reference and a ground for the fuel tank pressure sensor. The fuel tank pressure sensor provides a signal to the PCM that ranges between
0.1 and 4.9 volts.