Leak Detection Valve: Testing and Inspection

VSV for Pressure Switching Valve

1. REMOVE VSV










2. INSPECT VSV FOR OPEN CIRCUIT

Using an ohmmeter, check that there is continuity between the terminals.

If there is no continuity, replace the VSV.







3. INSPECT VSV FOR GROUND

Using an ohmmeter, check that there is no continuity between each terminal and the body.

If there is no continuity, replace the VSV.







4. INSPECT VSV OPERATION
a. Check that air does not flow from ports E to F.





b. Apply battery posi

tive voltage across the terminals.
c. Check that air flows from ports E to F.

If operation is not as specified, replace the VSV.

5. REINSTALL VSV