2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 215Get this manual
FUEL SYSTEM (Programmed Fuel Injection) 3IAT Sensor Line Open Circuit Inspection Disconnect the ECM 26P black connectorCheck the Gray and Greenyellow wires for continuity between the IAT sensor 2P connector terminals and ECM 26P black connector terminalsIs there continuity? YES NO Replace the ECM with known good one, and recheck Open circuit in Gray wire Open circuit in Greenyellow wireGreenyellow ARX1200T3T3D: Gray