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Subaru
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2001
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Legacy Outback LL Bean Ed. AWD F6-3.0L
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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DTC 21
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Cruise Control System
Cruise Control System
DIAGNOSIS
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Poor welding of built-in relay of cruise control module.
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Failure of built-in CPU RAM of cruise control module.