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Kia
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2005
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Sedona EX
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Testing & Diagnosis
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Engine Control System
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MFI Control System
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Other Control Functions
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Cooling Fan Control
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ECM Output
ECM Output
DUTY = T/256 usx 100%
The control to cooling fan is performed in ECM output + duty.
Fig 1: Illustrating ECM Output Voltage
Courtesy of KIA MOTORS AMERICA, INC.