2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 433Get this manual
SELECTABLE 4WD SYSTEM (FMFE models) PROBLEM CODE 4: SYSTEM VOLTAGE NOTE: Before starting the troubleshooting, check for the following:battery condition (page 18-5)engine idle speed (page 4-13) 1Failure Reproduction Turn the ignition switch to ON30 seconds after turning the ignition switch ON, check that the 4WD indicator blinksDoes the 4WD indicator blink times? NO YESCheck the charging system (page 18-7)- GO TO STEP 2
2ECM Power Input Line Inspection Turn the ignition switch to OFFRemove the front fender (page 3-9)Disconnect the ECM 33P black connectorTurn the ignition switch to ONMeasure the voltage between the wire harness side connector terminal and ground using the special toolTOOL: Pin probe (Male) 07ZAJ-RDJA110