2008-2010 Kawasaki KFX450R Factory Service Manual, Page 82Get this manual
FUEL SYSTEM (DFI) 3-25 DFI System Troubleshooting Guide
This is not an exhaustive list, giving every possible cause for each problem listedIt is meant simply as rough guide to assist the troubleshooting for some of the more common difficultiesThe ECU may be involved in the DFI electrical and ignition system troublesIf these parts and circuits are checked out good, be sure to check the ECU for ground and power supplyIf the ground and power supply are checked good, replace the ECU