2007 Yamaha Apex Factory Service Manual, Page 611Get this manual

2007 Yamaha Apex Factory Service Manual, Page 611

FUEL INJECTION SYSTEM Fault code No43 Symptom The ECU is unable to monitor the battery voltageUsed diagnostic code No09 (fuel
an open or short circuitnessBetween battery terminal and ECU coupler Redwhite Redwhite Red BlueRed (Main switch and engine
stop switch are on Red RedBlue (Fuel injection system relay is on Malfunction or open circuit in fuel injec- Execute the
diagnostic mode (Code No.09)tion system relay Replace if defectiveNOTE: When the leads are disconnected, the voltage check
by the code No.09 is impossible1Disconnect the fuel injection system relay from the wire harness2Connect the pocket tester1)
and battery (12 V) to the fuel injection system relay terminals as shownBattery positive terminal Battery positive terminal