2001-2003 Honda TRX500FA Factory Service Manual, Page 390Get this manual
HONDAMATIC Remove he an gle sensor from the cran kcase (see below)Check tha th res ist ance between the Yellowfblue an Blu egreen terminals of the angl sensor aries while turn ing th sensor shaftThe resist ance shoul change smoothly as fo llo s
ANG LE SENS OR
Yel lowb lue Bl ue g reen
REPLACEMENT
Remove th exha ust pipe !page 210)Clean around th senso base wi th co mp ressed air before removi ng the angle senso rRemov the two bolts, ashers and ang le sensor fr om the crankcase
A NGLE SENSOR
AN WAS HERS
Install new D-r ing onto new ang le sensorNever allow fore'!}"