2008-2010 Kawasaki KFX450R Factory Service Manual, Page 97Get this manual
3-40 FUEL SYSTEM (DFI) Main Throttle Sensor (Service Code 11)
If the output voltage is normal, check the wiring for continuityDisconnect the ECU and sensor connectorsWiring Connection ECU Connector [A] Main Throttle Sensor Connector [B] YW lead (ECU terminal 17) BRBK lead (ECU terminal 9)
If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection)If the ground and power supply are good, replace the ECU (see ECU RemovalInstallation)