I have a John Deere 315 sg that's turning over but won't fire up! I t has a code F9C4 up and there is no power at the connector on injection pump
Welcome to HEF paddy . Machine serial # ? Fault code F9C4 , “monitor not receiving messages from engine controller “. That fault code I don’t think would be related to an engine no start. No other active codes ? The DE10 injection pump solenoid is supplied a variable voltage by the ECU controlling fuel delivery. Check the fuse panel for blown switched power and or unswitched power ECU fuses.