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Home >> Chevrolet >> 2001 >> Tracker 2D Utility, RWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P0505: Idle Control System >> Circuit Description
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Circuit Description

PCM controls Idle Air Control (IAC) valve in order to regulate air flow through idle air by-pass passage. Amount of air flowing through idle air by-pass passage determines idle speed. IAC valve is regulated according to engine load. A stalling condition could be caused by IAC valve not functioning properly.

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