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Home >> Mazda >> 2002 >> MX-5 Miata Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1570: Variable Tumble Control System Solenoid Valve Circuit, High Input >> Possible Cause

Possible Cause

Open or Short circuit between VTCS solenoid valve and PCM.
Open circuit between VTCS solenoid valve and main relay.
VTCS solenoid valve malfunction.
PCM malfunction.

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