2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 414Get this manual
ELECTRIC SHIFT PROGRAM (ESPFE model) 4ECM Inspection Connect the ECM connectorDisconnect the gear position switch 8P gray connectorTurn the ignition switch to ONMeasure the voltage between each terminal (+) of the wire harness side 8P connector and ground (-)STANDARD: Is the voltage about V? NO YESReplace the ECM unit with new one and troubleshoot again- GO TO STEP 5GEAR POSITION SWITCH CONNECTOR (Viewed from the terminal side) Whitegreen Light greenredGrayLi bluewhite
Bluewhite