Operation CHARM
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Ford Truck
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2009
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Ranger 2WD V6-4.0L
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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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Air Temperature Sensor ( Ambient / Intake )
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Description and Operation
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Electronic Engine Controls
Electronic Engine Controls
Electronic Engine Controls
The IAT sensor (4.0L):
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sends the PCM a signal indicating the temperature of the air entering the engine.
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resistance decreases as temperature increases.