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Subaru
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2004
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Baja Base, Standard
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Repair and Diagnosis
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Engine Performance
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Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO)
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P0604: Internal Control Module Random Access Memory (Ram) Error
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Outline Of Diagnosis
Outline Of Diagnosis
Detect the malfunction of micro-computer (RAM).
Zero clear the all normal RAM on initial routine, and judge NG when the sum of cleared RAM is not "0".