Fuel Pressure Control Solenoid: Testing and Inspection

PRESSURE REGULATOR CONTROL SOLENOID VALVE

Inspection
On-vehicle
1. Start the engine and run it at idle.





2. Disconnect the vacuum hose from the pressure regulator. Verify that vacuum is felt.





3. Ground the solenoid valve terminal wire (YEL/RED) with a jumper wire. Verify that no vacuum is felt.
4. If vacuum exists, check the solenoid valve.

Solenoid valve
1. Disconnect the vacuum hose from the solenoid valve and vacuum pipe.





2. Blow through the solenoid valve from port (A).
3. Verify that air flows from port (B).
4. Disconnect the solenoid valve connector.
5. Connect battery voltage and a ground to the terminals of the solenoid valve.





6. Blow through the solenoid valve from the port (A).
7. Verify that air flows from the valve air filter.
8. If not as specified, replace the solenoid valve.