2001-2003 Honda TRX500FA Factory Service Manual, Page 372Get this manual
HONDAMATIC Problem Cod 4:Throttle sensor system
Check the ECM 34P connector (1) and the hrott le sensor 3P connector (7) for loose contact
Abnormal
Correct the faulty part
Disconnect the th rottle sensor 3P connector (7)Measure the resistance between theYeliowwhite and Greenyellow terminals of he throttle sensor (page 23-27)I
I- Abnormal
Faulty throttle sensorAfter replacementperform in itial setting procedure
Measure the resista nce between the Yellowlblack and Green ye llo terminals of the sensor while operating the throttle lever (page 23-27)
Abnormal
Check installation condition of the throttle sensor (page 23-29)
I Normal
Abnormal
Inst all properlyAfter inst allat ion, perform ini ial setting procedure Faulty throttle sensorAfter replacement, perf orm initial setting procedure