Operation CHARM
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Jeep Truck
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2007
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Commander 2WD V8-4.7L VIN N
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Cylinder Block Assembly
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Engine Block Heater
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Description and Operation
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Engine Block Heater - Operation
Engine Block Heater - Operation
OPERATION
Connecting the power cord to a grounded
110-120 volt AC
electrical outlet with a grounded, three wire extension cord activates the heating element warming the engine coolant.