Operation CHARM
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Ford Truck
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1992
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F 350 4WD Pickup V8-460 7.5L
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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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KN - Fuel Pressure Regulator Control Solenoid
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KN1 - KOEO Service Code 554: Enter Output State Check
KN1 - KOEO Service Code 554: Enter Output State Check
Pinpoint Test KN1:
