Catalytic Converter Bypass Valve Vacuum Switch: Testing and Inspection

VSV FOR HC ABSORBER AND CATALYST SYSTEM (HCAC)

INSPECTION

1. REMOVE VSV




2. INSPECT VSV
Using an ohmmeter, check that there is continuity between the terminals.
Resistance: 33 - 39 Ohm at 20 °C (68 °F)
If there is no continuity, replace the VSV.




3. INSPECT VSV FOR GROUND
Using an ohmmeter, check that there is no continuity between the each terminal and the body.
If there is continuity, replace the VSV.




4. INSPECT VSV OPERATION
a. Check that air flows from port E to the filter.




b. Apply battery positive voltage across the terminals.
c. Check that air does not flow from ports E to F.
If operation is not as specified, replace the VSV.

5. REINSTALL VSV