Operation CHARM
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Dodge or Ram Truck
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1998
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Caravan FWD V6-181 3.0L SOHC VIN 3 MFI
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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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Description and Operation
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Functional Operation
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Inputs and Outputs
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Inputs
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Battery Voltage
Battery Voltage
The PCM monitors the
battery voltage
input to determine
fuel injector
pulse width and generator field control.
If
battery voltage
is low the PCM will increase injector pulse width (period of time that the injector is energized)