Honda CBR125R, Owner'S Manual

Page: 364 / 430

BATTERY/CHARGING SYSTEM
16-4
TROUBLESHOOTING
BATTERY IS DAMAGED OR WEAK
1. BATTERY TEST
Remove the battery (page 16-5).
Check the battery condition using a 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 16-5).
Check the battery current leakage test (Leak test; page 16-6).
Is the current leakage below 0.1 mA?
YES – GO TO STEP 4.
NO – GO TO STEP 3.
3. CURRENT LEAKAGE TEST WITHOUT REGULATOR/RECTIFIER CONNECTOR
Disconnect the regulator/rectifier 6P (Black) connector and recheck the battery current leakage.
Is the current leakage below 0.1 mA?
YES – Faulty regulator/rectifier
NO – • Shorted wire harness
• Faulty ignition switch
4. CHARGING VOLTAGE INSPECTION
Measure and record the battery voltage using a digital multimeter (page 16-5).
Start the engine.
Measure the charging voltage (page 16-6).
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 5.
5. ALTERNATOR CHARGING COIL INSPECTION
Check the alternator charging coil (page 16-7).
Is the alternator charging coil resistance within 0.2 – 0.6
Ω
(20
°
C/68
°
F)?
YES – Faulty charging coil
NO – GO TO STEP 6.
6. REGULATOR/RECTIFIER SYSTEM INSPECTION
Check the voltage and resistance at the regulator/rectifier 6P (Black) connector (page 16-7).
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 BATTERY MATE or equivalent
STANDARD:
Measured BV < Measured CV < 15.5 V
• BV = Battery Voltage
• CV = Charging Voltage