9-5 Sedan (9600) L4-2.3L Turbo (B235) (2000)
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Fuel Tank Pressure Sensor: Description and Operation
A differential pressure sensor is fitted on the tank. The pressure sensor compares the pressure in the tank with the atmospheric pressure.
EVAP Pressure Sensor (585)
The pressure sensor is powered with 5V from Trionic pin 46 and is grounded on pin 70.
The pressure sensor delivers a voltage to Trionic pin 59, the magnitude of which is proportional to the difference between the pressure in the tank and the
atmospheric pressure.
When there is no difference, the voltage from the pressure sensor is approx. 2.5V.
The pressure sensor is used for OBD II diagnosis.
