2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 231Get this manual
FUEL SYSTEM (Programmed Fuel Injection) 2MST Switch Ground Line Inspection Measure the voltage between the wire harness side connector terminalsConnection: Whiteblue (+) Greenyellow () Is the voltage within 4.75 5.25 V? YES NO GO TO STEP Open circuit in the Greenyellow wireGreenyellow Whiteblue MST SWITCH 2P CONNECTOR (viewed from the terminal side)
3MST Switch Inspection Check the MST switch (page 8-114)Is it normal? YES NO GO TO STEP Faulty MST switch