Fuel Pressure Control Solenoid: Testing and Inspection

1. Unplug and remove FPU Vacuum Switching Valve (VSV) from the RH side of the engine.
2. Using an Ohmmeter, measure the resistance across the terminals.

Checking FPU VSV For Open Circuit:

Resistance: 33 - 39 Ohms

3. If not as specified, replace the VSV.
4. Check for continuity between the terminals and the VSV body. If continuity exists, replace the VSV.

Checking FPU VSV For Short Circuit:

5. Blow through pipe E and ensure that air flows through pipe F.

Testing Fuel Pressure-up VSV - Current Removed:

6. Connect battery current to the VSV terminals. Blow through pipe E and ensure that air flows through filter and not pipe F.

Testing Fuel Pressure-up VSV Operation - Current Applied:

7. If a problem is found, replace the VSV.
8. Reinstall the FPU VSV on the engine.