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Kia
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2000
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Spectra GS, Standard
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Controls - Self-Diagnostics - SEPHIA & Spectra
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Diagnostic Trouble Codes
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DTC P1507: Idle Air Control (IAC) Valve Closing Coil Signal Low, Or DTC P1508: Idle Air Control (IAC) Valve Closing Coil Signal High
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Diagnostic Aids
Diagnostic Aids
Check for following possible problems:
Open, short to ground or short to power in White/Yellow wire between IAC valve and Engine Control Module (ECM).
IAC valve malfunction.