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Home >> Saturn >> 2003 >> Ion 1 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0509: Idle Control System Circuit - High >> Conditions For Setting DTC
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Conditions For Setting DTC

ECM detects an IAC valve circuit fault and condition is present for 0.5 second while ECM is attempting to operate the IAC valve.

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