2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 90Get this manual
Engine General Information and Diagnosis:
DTC "C14" (P0120-HL): TP Sensor Circuit Malfunction
Detected condition and possible cause Detected condition Output voltage is not within the following rangeDifference between actual throttle opening C14 and opening calculated by ECM is larger than specified value0.4 Sensor voltage4.5 Sensor voltage is higher than specified valueP0120 Sensor voltage is lower than specified valueWiring diagram
TP sensor BBr 24 13 ECM E2 VCC TP
B933H21104011
Possible cause TP sensor maladjustedTP sensor circuit open or shortTP sensor malfunctionECM malfunction