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Home >> Chevrolet >> 2000 >> Astro Van L AWD V6-4.3L VIN W >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> IAC Position
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IAC Position

RANGE (0-255) COUNTS: The scan tool displays in counts the Idle Air Control (IAC) pintle position commanded by the VCM. The higher the number of counts, the larger the air passage opening. The idle air control should respond fairly quickly to changes in engine load in order to maintain desired idle RPM.

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