Operation CHARM
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Ford Truck
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1993
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F 250 4WD Pickup V8-7.3L DSL
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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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Reading and Clearing Diagnostic Trouble Codes
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Reading Diagnostic Trouble Codes
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Quick Test Appendix (Detailed Testing Instructions)
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Reading Self-Test Service Codes
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Types of Diagnostic Trouble Codes (DTCs)
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Slow Codes Description
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Separator Pulse Description
Separator Pulse Description
A single 1/2 second separator pulse is issued 6-9 seconds after the last functional test code (Key ON/Engine OFF only). Then 6-9 seconds after the single 1/2 second separator pulse, the continuous codes will be issued.