Test NS-4B - Repairing High Fuel Pressure
WARNING:
High fuel pressure may be present in fuel lines. Open fuel system with caution. See FUEL PRESSURE RELEASE .
Inspect fuel return tube for restriction between fuel filter and fuel pump module. If a restriction is present, replace restricted fuel tube. Perform TEST VER-1A. If a restriction is not present, replace in-tank fuel pressure regulator. Perform TEST VER-1A.