2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 289Get this manual
SA TTERY CHARGING SYSTEM
TROUBLESHOOTING
Battery is Damaged or Weak 1Battery Test Remove the battery (page 16-6)Check the battery condition using the recommended battery testerRECOMMENDED BATTERY TESTERBM-210-AH (U.S.A only), BM-210, BATTERY MATE or equivalent Is the battery in good condition? NO YESFau Ity batteryGO TO STEP 2
2Current Leakage Test Install the battery (page 16-6)Check the battery current leakage test (Leak test: page 16-8)Is the current leakage below 0.1 mA? YES NOGO TO STEP 4- GO TO STEP 3
3Current Leakage Test without RegulatorRectifier Disconnect the regulator rectifier connector and recheck the battery current leakageIs the current leakage below mA? YES NOFaulty regulatorrectifier _Shorted wire harness Faulty ignition switch