2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 176Get this manual
FUEL SYSTEM (Programmed Fuel Injection) 3ECT Sensor Resistance Inspection Pull the safety lanyard clip off of the engine stop switchMeasure the ECT sensor resistance between the sensor connector terminalsStandard: YES NO 2.3 2.6 k# (20!C68!F)
ECT SENSOR
Is the resistance within 2.3 2.6 k# (20!C68!F)? Open circuit in the Greenyellow wire Faulty ECT sensor