Operation CHARM
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Porsche
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1991
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911 Carrera 4 Coupe AWD F6-3600cc 3.6L SOHC
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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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Antitheft and Alarm Systems
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Test Point 1
Test Point 1
Control Unit Faulty
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Replace control unit.