Operation CHARM
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Mercury Truck
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2006
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Mountaineer AWD V6-4.0L VIN E
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Repair and Diagnosis
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Lighting and Horns
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Brake Lamp
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Principles of Operation
Principles of Operation
PRINCIPLES OF OPERATION
The smart junction box (SJB) monitors the input from the stoplamp switch. When the brake pedal is applied, voltage is routed to the SJB. The SJB then supplies voltage to the stoplamps.