2006-2009 Suzuki LT-R450 Service Manual, Page 156Get this manual
FI SYSTEM DIAGNOSIS
DETECTED ITEM TO sensor
DETECTED FAILURE CONDITION The sensor voltage should be the following for secand more, after ignition switch is turned ON 0.3 sensor voltage4.6 In other than the above value, C23 (P1651) is indicatedSensor voltage is higher than specified valueSensor voltage is lower than specified value
CHECK FOR TO sensor, lead wirecoupler connection