17-4
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BATTERY/CHARGING SYSTEM
TROUBLESHOOTING
BATTERY IS DAMAGED OR WEAK
1. BATTERY TEST
Remove the battery (page 17-5).
Check the battery condition using the recommended battery tester.
Is the battery in good condition?
NO
–
Faulty battery.
YES
–
GO TO STEP 2.
2. CURRENT LEAKAGE TEST
Install the battery (page 17-5).
Check the battery current leakage test (page 17-6).
Is the current leakage below 0.01 mA?
YES
–
GO TO STEP 4.
NO
–
GO TO STEP 3.
3. CURRENT LEAKAGE TEST WITHOUT REGULATOR/RECTIFIER CONNECTOR
Disconnect the regulator/rectifier connector and recheck the battery current leakage.
Is the current leakage below 0.01 mA?
YES
–
Faulty regulator/rectifier
NO
–
• Shorted wire harness
• Faulty engine stop switch
4. ALTERNATOR CHARGING COIL INSPECTION
Check the alternator charging coil (page 17-7).
Is the alternator charging coil resistance within 0.2 – 1.2
Ω
(20°C/68°F)?
NO
–
Faulty charging coil.
YES
–
GO TO STEP 5.
5. CHARGING VOLTAGE INSPECTION
Measure and record the battery voltage using a digital multimeter (page 17-6).
Start the engine.
Measure the charging voltage page 17-6.
Compare the measurements to the results of the following calculation.
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 regulator/rectifier connector (page 17-7).
Are the measurements correct?
YES
–
Faulty regulator/rectifier
NO
–
• Open circuit in related wire
• Loose or poor contacts of related terminal
• Shorted wire harness
RECOMMENDED BATTERY TESTER: BM-210 or equivalent
STANDARD:
Measured battery Voltage < Measured charging voltage < 15.5 V
Summary of Contents for XL125LK
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