Operation CHARM
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Ford
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1996
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Explorer 2WD V6-245 4.0L
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Repair and Diagnosis
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Relays and Modules
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Relays and Modules - Accessories and Optional Equipment
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General Module
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Testing and Inspection
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Flow of Diagnosis
Flow of Diagnosis
GEM
Diagnosis
The GEM diagnostic system is composed of the NGS Tester, the GEM and all GEM-associated components. They allow you to determine if a GEM subsystem has a fault and provides the capability to isolate the fault.