Operation CHARM
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Dodge or Ram Truck
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1993
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D 250 Pickup L6-359 5.9L DSL
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Data Link Connector
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Description and Operation
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SCI Transmit
SCI Transmit
The Serial Communication Interface (SCI) receive and transmit outputs allow the PCM to communicate with the DRB II or equivalent scanner.