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Pickup & 4Runner - Carbureted

  1. Disconnect VSV connector and connect battery voltage to VSV terminals. Air should pass through valve with voltage applied. Remove battery voltage and check that air flow is blocked.
  2. Using an ohmmeter, check that there is no continuity between positive terminal of VSV and valve body.
  3. Using an ohmmeter, check resistance between VSV terminals. Resistance at 68°F (20°C) should be 38-44 ohms. Replace VSV if it does not operate as outlined.
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