ACIS Vacuum Switching Valve (VSV)

Disconnect vacuum hoses and electrical connector from VSV. See Figure or Figure . Remove VSV if necessary. Replace VSV if it does not operate as follows.

• Ensure no continuity exists between VSV case (ground) and each terminal of VSV connector (this checks for an internal short).
• Blow through port "E". See Figure. Air comes out of filter, but not out of port "F".
• Apply battery voltage across terminals. Blow through port "E". Air comes out of port "F".