2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 475Get this manual
SELECTABLE 4WD SYSTEM PROBLEM CODE 4: SYSTEM VOLTAGE Before starting the troubleshooting, check for the following: battery condition (page 19-5) engine idle speed (page 3-15) 1Failure Reproduction Turn the ignition switch ONAfter 30 seconds after turning the ignition switch ON, check that the 4WD indicator blinksDoes the 4WD indicator blink times? NO YES Check the charging system (page 19-8)GO TO STEP 24WD INDICATOR
2ECM Power Input Line Inspection Turn the ignition switch ONMeasure the voltage between the wire harness side connector terminal and groundConnection: Blackgreen (+) Ground ()
Be careful not to bend the connector terminals