Fuel Tank Pressure Sensor: Testing and Inspection
Fuel Tank Pressure SensorINSPECTION
1. FUEL TANK PRESSURE SENSOR
1. Check that the fuel tank pressure sensor does not have deformation, cracks or other damages.
2. Connect dry-cell battery positive terminal to terminal No. 3 and dry-cell battery ground terminal to terminal No. 1, circuit tester positive terminal to terminal No. 2 and the circuit tester negative terminal to terminal No. 1.
NOTE:
- Use new dry-cell batteries.
- Using circuit tester, check the voltage of a single dry-cell battery is 1.6 V or more. And also check the voltage of three batteries in series is between 4.8 V and 5.2 V.
3. Check the voltage at a normal atmospheric pressure.
NOTE: The atmospheric pressure at higher altitude is lower than normal. Therefore, the voltage is lower than the standard value.
4. Connect the Mighty Vac to the pressure port (A) on the fuel tank pressure sensor.
5. Check the voltage when generating vacuum and positive pressure using Mighty Vac.
CAUTION: Be sure to apply pressure within a range of -10 - 20 kPa (-0.1 - 0.2 kgf/sq.cm, -1.45 - 2.90 psi). Otherwise the fuel tank pressure sensor will be damaged.
2. OTHER INSPECTIONS
Check that the hose has no cracks, damage or loose part.