Honda NSS250S Manual page 536

BATTERY/CHARGING SYSTEM
TROUBLESHOOTING
BATTERY IS DAMAGED OR WEAK
1. BATTERY TEST
Remove the battery (page 19-6).
Check the battery condition using the recommended battery tester.
RECOMMENDED BATTERY TESTER:
BM-210 or BATTERY MATE or equivalent
Is the battery in good condition?
YES
NO
2. FUSE INSPECTION
Check the MAIN A fuse (40 A) for blown.
Is the MAIN A fuse good condition?
YES
NO
3. CURRENT LEAKAGE TEST
Install the battery (page 19-6).
Check the battery current leakage test (Leak test; page 19-7).
Is the current leakage below 1.5 mA?
YES
NO
4. CURRENT LEAKAGE TEST WITHOUT REGULATOR/RECTIFIER CONNECTOR
Disconnect the regulator/rectifier connector and recheck the battery current leakage.
Is the current leakage below 1.5 mA?
YES
NO
5. ALTERNATOR CHARGING COIL INSPECTION
Check the alternator charging coil (page 19-8).
Is the alternator charging coil resistance within 0.1 – 0.2 Ω (20 ° C/68 ° F)?
YES
NO
6. CHARGING VOLTAGE INSPECTION
Measure and record the battery voltage using a digital multimeter (page 19-7).
Start the engine and measure the charging voltage (page 19-8).
Compare the measurement to result of the following calculation.
STANDARD:
Measured BV < Measured CV < 15.5 V
• BV = Battery Voltage (page 19-7)
• CV = Charging Voltage (page 19-8)
Is the measured charging voltage within the standard voltage?
YES
NO
19-4
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– GO TO STEP 2.
– Faulty battery
– GO TO STEP 3.
– Replace a MAIN A fuse.
– GO TO STEP 5.
– GO TO STEP 4.
– Faulty regulator/rectifier
– • Shorted wire harness.
• Faulty ignition switch (page 23-26)
– GO TO STEP 6.
– Faulty charging coil
– Faulty battery
– GO TO STEP 7.