2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 114Get this manual
FUEL SYSTEM (OFI) 3-55 Oil Temperature Sensor (Service CodeCharacter-730ILt)
Turn the ignition switch OFFIf the output voltage is out of the specifiedcheck the ECU for its ground, and power supply (see ECU Power Supply Inspection) If the ground and power supply are goodreplace the ECUIf the output voltage is far out of the specified (e.gwhen the wiring is openthe voltage is about V)check the wiring (see next diagram)If the wiring is goodcheck the oil temperature sensor resistance Remove the needle adapter set, and apply silicone sealant to the seals of the connector for waterproofingSealant-Liquid Gasket, TB1211: 56019-120