Battery/Charging System Troubleshooting - Honda 2004 CRF250X Service Manual

BATIERY/CHARGING SYSTEM
TROUBLESHOOTING
BATTERY IS DAMAGED OR WEAK
, . SA TTERV TEST
Remove the battery (page 16-6).
Check the battery condition using the recommended battery tester.
RECOMMENDED BATTERY TESTER:
BM-210-AH (U.S.A . on IV). 8M-2 1O, BATTERY MATE (MTP08-0192. U.S.A. only) or equivalent
Is the battery in good condition ?
NO - Faulty battery.
YES - GO TO STEP 2.
2. CURRENT LEAKAGE TEST
Install the battery (page 16-6).
Check the battery current leakage test (Leak test; page 16-6) .
Is the current leakage below O .
1
mA l
YES - GO TO STEP 4.
NO - GO TO STEP 3.
3. CURRENT LEAKAGE TEST WITHOUT REGULATOR / RECTIFIER CONNECTED
Disconnect the regulator/rectifier connecto r and recheck the battery current leakage.
Is the current leakage below 0. 1 mA l
YES - Faulty regulat or/rectifier
NO _. Shorted wire harness
• Faulty main relay (,04, '05 only)
4. ALTERNATOR CHARGING COIL INSPECTION
Check the alternator charging coil (page 16-8)'
Check for continuity between Yellow terminal and Ground, Blue terminal and Ground.
Is there continuity?
NO - Faulty charging coil
YES - GO TO STEP 5.
5.
CHARGING VOLTAGE INSPECTION
Measure and record the battery voltage using a digital multi meter (page 16-6).
Start the engine.
Measure the charging voltage (page 16-7).
Compare the measurements to the results of the following calculation.
STANDARD:
Measured BV < Measured CV < 15 .5 V
- BV
=
Battery Voltage
- CV
=
Charging Voltage
Is the measured charging voltage within the standard voltage?
YES - Faulty battery
NO - GO TO STEP
6.
6. REGULATOR / RECTIFIER SYSTEM INSPECTION
Check the voltage and resistance at the regu lator/rectifier connector (page 16-7).
Are the result
of
checked voltage and resistance correct?
YES - Faulty regulator/rectifier
NO - . Open circuit in related wire
• Loose or poor contacts of rela ted terminal
• Shorted wi re harness
16-5