2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 498Get this manual
HONDAMATIC 8System Failure Reproduction Connect all connectorsTurn the ignition switch ONCheck the gear position indicatorIs 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
PROBLEM CODE 5: ANGLE SENSOR SYSTEM (MOTOR LOCK)
1Angle Sensor Connection Inspection Check for loose or poor contact on the ECM 21P (Gray) and 5P (Black) connectors'05, '06 shown: ECM 5P (BLACK) CONNECTOR