2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 494Get this manual
HONDAMATIC 8System Failure Reproduction Connect all connectorsTest-drive the vehicle under the following conditions: Gearshift lever in range Mode select switch at ESP1st Driving for seconds or more at over mph of vehicle speed Is problem code indicated? NO No problem (Temporary failure) Erase the problem code (page 24-9) YES Faulty ECM After replacement, perform initial setting procedure (page 246) GEAR POSITION INDICATOR