A3 - EVAP Control Valve Signal Line Disconnected
^ Disconnect the evaporative emission tube shut off valve signal line from the fuel tank filler pipe.^ Plug the signal line at the fuel tank filler pipe.
^ Plug the fuel tank vent tube at evaporative emissions canister.
^ Pressurize the fuel system.
^ Remove plug from the fuel tank vent tube.
^ Did the fuel system pressure decay?
YES -- Replace the evaporative emission tube shut off valve. Verify service.
NO -- Go to A4. A4 - Evaporative Emission Tube Disconnected