2006-2009 Suzuki LT-R450 Service Manual, Page 178Get this manual
FI SYSTEM DIAGNOSIS
"C23" (P1651-HL) TO SENSOR CIRCUIT MALFUNCTION
DETECTED CONDITION C23 POSSIBLE CAUSE The sensor voltage should be the follow- TO sensor circuit open or short ing for sec and more, after ignition TO sensor malfunction switch is turned ON ECM malfunction Sensor voltage4.6 0.3 V
Sensor voltage is higher than specified value Sensor voltage is lower than specified value
TO sensor circuit shorted to VCC or ground circuit open TO sensor circuit open or shorted to ground or VCC circuit open
TO sensor