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Mazda
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2002
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MX-5 Miata Base, Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P1512: Variable Tumble Control System Stuck Closed
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Possible Cause
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Cause
Short circuit between VTCS vacuum switch and PCM.
VTCS vacuum switch malfunction.
VTCS solenoid valve malfunction.
PCM malfunction.