ACIS Vacuum Switching Valve (VSV)
- Disconnect vacuum hoses and electrical connector from VSV. Remove VSV if necessary. Measure resistance between VSV terminals. If resistance is 39-45 ohms, go to next step. If resistance is not as specified, replace VSV.
- Check for continuity between VSV case and each terminal at VSV connector (this checks for an internal short). If continuity does not exist, go to next step. If continuity exists, replace VSV.
- Blow air through port "E". See Fig 1. Air should flow out of filter, but not out of port "F". Apply battery voltage to VSV terminals. Blow air through port "E". Air should flow out of port "F". If VSV does not function as specified, replace VSV.
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