Operation CHARM
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Astro Van L AWD V6-4.3L VIN W
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Scan Tool Data Definitions - Powertrain Systems
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Weak Vacuum Test
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Weak Vacuum Test
PASS/NOT RUN/FAIL
The Weak Vacuum Test will run only if the Loaded Canister Test does not pass. Insufficient vacuum in the evaporative system will cause this test to fail. The two states of this parameter are Pass and Not Run/Fail.