1998-2004 Honda Foreman 450 factory service manual, Page 451Get this manual
SELECTABLE 4WD SYSTEM (After '01) 4WD Indicator Problem Code 4: FCC Unit System Voltage In spect the following before diagnosing the system- Make sure the battery is fully charged and in good condition- Engine idle speed Abnormal
Check the connections of the FCC unit, fuse box, battery and relate circuitNormal Turn the ign ition switch "ON" and check the number of times the 4WD indicator blinks after 30 secondsfour time blinks Turn the ignition switch "OFF"Disconnect the FCC unit connector With the ignition switch "ON", measure the voltage between the RedlWhite and Green connector te rminals of the wire harness side