Honda BF75DK3 BF90DK4 Outboards Shop Service Manual, 2014, Page 179Get this manual

Honda BF75DK3 BF90DK4 Outboards Shop Service Manual, 2014, Page 179

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FUEL SYSTEM DTC 1412 (ECT SENSOR VOLTAGE IS TOO HIGH)
2ECT sensor signalGND line open circuit
inspection
Turn the combination switch OFF and disconnect the ECT sensor (2P) connector