Operation CHARM
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Dodge or Ram Truck
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1997
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Grand Caravan FWD L4-2.4L VIN B
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Repair and Diagnosis
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Heating and Air Conditioning
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Description and Operation
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Rear A/C Unit
Rear A/C Unit
CIRCUIT OPERATION
The
HVAC
control operates the rear A/C unit mode door on circuit C63 and C64. Depending on the operator's selection the HVAC control supplies ground and Voltage to on either circuit to OPEN or CLOSE the mode door.