Operation CHARM
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Mercury
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1991
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Colony Park V8-302 5.0L VIN F FI
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Pinpoint Tests
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QB - Key On Engine Off/Cont. Memory Code 15/511 or 15/512 Test
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QB1 - Condition For Continuous Code 15/512
QB1 - Condition For Continuous Code 15/512
Pinpoint Test QB1:
