2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 289Get this manual
FUEL INJECTION SYSTEM Fault code No37 Diagnostic code Nod54 ISC valve Check or maintenance job Check the backup fuseRefer to "CHECKING THE FUSES" in chapter 3
Symptom Engine speed is high when the engine is idlingReinstatement method
Order Itemcomponents and probable cause Backup fuse is blown