2001-2003 Honda TRX500FA Factory Service Manual, Page 364Get this manual
HONDAMATIC
BEFORE STARTING TROUBLESHOOTING
SelF-DIAGNOSTIC FUNCTION
GEA POSIT ION
OUTLINE he engine control module {ECM) that controls the Hondarnatic system has self- diagnosti unction to constantly monitor the syste When it detects 11 problem with th sys tem, it functions as foll ows- the gear position indicator th meter bl inks to notify he rider of pr oblemthe shift control stops in fail-safe mode
The ECM checks he co ndition of the Ho nd am at ic system by detecti ng he signals fr each sensor, switch and control motor when th ignition switch is ON and during drivi ng When the ECM detects 11 problem, it in dicates the problem by blinking he gear positi on indicator (Ind icator mode 1)The Hondamatic system stops functio ning when problem occurs, but th ve hicle can still driveThe shift fu nction can be reset by turnin the ignition sw itch OFF and ON, ut the shift control sto ps when the ECM detects the pro blem again The ECM sto res the problem symptom as rob lem cod (p age 23-8) in he erasable me mo ry, but does not display it in in icat mode 1T heref or e, it is necessary to retrieve the pr oblem coders! before starting the iagnostic troubleshootingU N