Pressure Regulator Control System

WARNING: Fuel line spills and leaks can be dangerous. Fuel can ignite and cause serious injuries or death and can damage the vehicle. Fuel can also irritate skin and eyes. To prevent this from happening, release the fuel pressure according to "Fuel Line Safety Procedures."




1. Remove the fuel pump relay.




2. Connect a fuel pressure gauge to the main hose.
3. Connect the fuel pump relay.
4. Start the engine and run it at idle.
5. Verify the fuel pressure.

Fuel line pressure: 190-220 kPa (28-32 psi)

6. Short the powertrain control module engine (PCME) terminal 4M and verify that fuel pressure is increased as specified.

Fuel line pressure: 250-260 kPa (36-38 psi)

7. If not as specified, check the pressure regulator and solenoid valve.