Operation CHARM
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Ford
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1994
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E 350 Van V8-460 7.5L
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Repair and Diagnosis
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Accessories and Optional Equipment
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Antitheft and Alarm Systems
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Arm/Disarm Switch
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Description and Operation
Arm/Disarm Switch: Description and Operation
PURPOSE
Closed when either door is unlocked with the key, the door disarm switches provide a ground input to the anti-theft controller module, which disables the anti-theft system.