2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 515Get this manual
HONDAMATIC 7Meter Line Short Circuit Inspection Connect the ECM 21P (Gray) connectorPut the gear shift lever in the range and the mode select switch at ESPTurn the ignition switch ONCheck for continuity between each of the wire terminals of main harness side combination meter 4P (Yellow) and 14P (Gray) connector and the frame groundIs there continuity at the Blue wire and Light blue wire only? NO YES Faulty combination meter Faulty ECM After replacement, perform initial setting procedure (page 246) Lb Bu YO BuW PBu
GEAR POSITION SWITCH
INSPECTION
Turn the ignition switch OFFDisconnect the ECM 21P (Gray) connectorCheck for continuity between each gear position switch wire terminal of the ECM connector and groundThere should be continuity only at the terminals that correspond to the gear positions shown below, and there should be no continuity at the other terminalsYou must test each of four wires in each gear positionTherefore, you need to make 16 tests, between each gear position switch wire terminal and groundWIRE OLOR GEAR OSITION L