Operation CHARM
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Ford
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1989
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Ranger 4WD V6-177 2.9L
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Repair and Diagnosis
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Transmission and Drivetrain
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Transfer Case
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Control Module
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Description and Operation
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Control Module: Description and Operation
The electronic control module conducts transfer case operation in response to inputs from the vehicle speed sensor, neutral start switch and clutch interlock switch and push-button actuation made by the operator.