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Porsche
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2004
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911 Carrera Coupe (996) F6-3.6L
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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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PCM - Porsche Communication System
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Test Point 1-23 (PCM)
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Test Point 14
Test Point 14
Fault, Fault Code 33 Test Point 14
Navigation, CD fault CM faulty/navigation unit Value range
Possible causes, elimination, notes
Replace navigation unit.