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Porsche
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1990
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928 GT V8-4957cc 5.0L
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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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Restraint Systems
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Test Point 25
Test Point 25
Fault Code 3 _ 39
Ignition pill circuit 3 contact resistance to battery voltage.
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See test point 24.
Test Point 24