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Vacuum Switching Valve

  1. Connect battery voltage and ground to VSV terminals. Air should pass through valve with power applied. No air should pass without power.
  2. Use an ohmmeter to check for continuity between positive terminal and VSV body. There should be no continuity between case of valve and positive terminal. If a short is found, replace VSV. Check resistance between VSV terminals. Resistance should be 51-57 ohms at 68°F (20°C).
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