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Home >> Chevrolet >> 1999 >> Astro Van 2WD 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 >> Desired IAC Position
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Desired IAC Position

Range 0 - 255
The desired IAC Position indicates how much the IAC valve is commanded open by the VCM. 0 counts would indicate a commanded fully closed valve. 255 counts would indicate a commanded fully opened valve.
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