Operation CHARM
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Ford Truck
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1998
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Expedition 2WD V8-281 4.6L SOHC
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Repair and Diagnosis
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Lighting and Horns
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Sensors and Switches - Lighting and Horns
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Hazard Warning Switch
Hazard Warning Switch
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Description and Operation
Testing and Inspection
Flow of Diagnosis
Symptom Related Diagnostic Procedures
Pinpoint Tests
Test A: Ignition Switch Inoperative
Test B: No Power In ACC Position
Test C: No Power In Run
Test D: No Power In Start Position
Component Tests and General Diagnostics
Multi-Function Switch Component Test
Multi-Function Switch Electrical Test
Diagrams