2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 293Get this manual
FUEL INJECTION SYSTEM Fault code No43 Diagnostic code Nod09 Fuel system voltage Check or maintenance job Check the coupler for any pins that may be pulled out Check the locking condition of the coupler If there is malfunction, repair it and connect the coupler securely Repair or replace if there is an open or short circuit Between fuel injection system relay coupler and ECU coupler(redblueredblue) Between fuel injection system relay coupler and starter relay coupler(brownblackbrownblack) Execute the diagnostic mode(Code No.d09) Replace if defective If there is no malfunction in the fuel injection system relay, replace the ECU
Symptom Power supply to the injector and fuel pump is not normalReinstatement method Starting the engine and operating it at idle