Vacuum Switch: Testing and Inspection

VACUUM SWITCHING VALVE

ON-VEHICLE INSPECTION

1. INSPECT VACUUM SWITCHING VALVE ASSEMBLY







a. Measure the VSV resistance.

If the result is not as specified, replace the VSV assembly.




b. Check the VSV operation.
1. Check that air flows from port E to the filter.

If the result is not as specified, replace the VSV assembly.




2. Apply battery voltage across the terminals.
3. Check that air flows from port E to F.

If the result is not as specified, replace the VSV assembly.