Mike's Workshop Manuals
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Mazda
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2003
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Tribute ES, FWD
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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 P1506: Idle Air Control System - Malfunction
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Possible Causes
Possible Causes
Possible causes are:
Vacuum leak.
Damaged IAC valve.
Damaged PCM.
Damaged throttle body.
IAC circuit short to GND.
IAC valve stuck open.