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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 P1494: EGR Solenoid Valve Signal #2 Circuit Malfunction (Low Input)
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Outline Of Diagnosis
Outline Of Diagnosis
Detect the open/short circuit of EGR.
Judge NG when ECM output level is different from actual terminal level.