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Subaru
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2004
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Baja Base, 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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Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO U5 (PZEV))
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P0638: Throttle Actuator Control Range/Performance (Bank 1)
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Diagnostic Method
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Details of Judgment (Always 1000 milliseconds when the actual opening angle to target opening angle)
Details of Judgment (Always 1000 milliseconds when the actual opening angle to target opening angle)
Fig 1: Actual Opening Angle Graph
Courtesy of SUBARU OF AMERICA, INC.
Malfunction Indicator Light Illumination:
Illuminates as soon as malfunction occurs.