1. Remove the fuel tank from the vehicle.
2. Plug fuel pump module hose, ports B and C.
3. Supply compressed air at a pressure of 3 kPa (23 mmHg) to port A and wait a while.
4. Check fuel tank for leaks. If air escapes from the tank, replace the tank with a new one.
5. Plug fuel pump module hose and port B.
6. Install the fuel tank level.
7. Supply compressed air at a pressure of 3 kPa (23 mmHg) to port A and wait a while.
8. Continuing to supply compressed air, make sure that it exits through port C at a pressure of up to 3 kPa (up to 23 mm Hg). If no air comes out, replace the fuel tank with a new one.
9. Create a negative pressure of -0.5 kPa through port A (-3.8 mmHg) and wait a while.
10. While evacuating the tank, check that air is being sucked in through port C. If air is not being drawn into the tank through port C, replace the fuel tank with a new one. If air is drawn in, turn the fuel tank upside down.
11. Continuing to evacuate air from the tank, make sure that no air is sucked in through port C on the inverted tank. If air continues to be sucked in, replace the fuel tank with a new one.