2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 98Get this manual
Engine General Information and Diagnosis:
DTC "C15" (P0115-HL): ECT Sensor Circuit Malfunction
Detected condition and possible cause Detected condition Possible cause Output voltage is not with in the following ECT sensor circuit open or shortrangeC15 ECT sensor malfunction0.2 Sensor voltage4.9 ECM malfunctionSensor voltage is higher than specified ECT sensor circuit is open or ground circuit openH valueP0115 Sensor voltage is lower than specified ECT sensor circuit shorted to the groundL valueWiring diagram