Operation CHARM
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Mitsubishi
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1989
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Galant L4-2.0L SOHC
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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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Engine Control Module
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Description and Operation
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Power Circuits
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Battery Signal
Battery Signal
Battery voltage signals are sent to the ECU, as a reference, to allow for base voltage compensation in the reading of various input sensors.