Battery/Charging System Troubleshooting; Battery Is Damaged Or Weak - Honda GL1800 Service Manual

TROUBLESHOOTING

Battery is damaged or weak

1. Battery Inspection
Remove the battery (page 17-6).
Check the battery condition using the recommended battery tester.
RECOMMENDED BATTERY TESTER:
BM-210-AH, BM-210 or BATTERY MATE
Is the battery voltage within 13.0–13.2 V?
NO
YES
2. Battery Current Leakage Inspection
Install the battery (page 17-6).
Check the battery current leakage (CURRENT LEAKAGE TEST: page 17-9).
SPECIFIED CURRENT LEAKAGE: 5 mA max.
Is the current equal to or less than the specified value?
NO
YES
3. Battery Connection Inspection
Check the battery terminals, alternator cable terminal, and alternator 4P connector for loose or poor
contacts.
Are all battery connections tight?
NO
YES
4. Charging Voltage Inspection
Measure and record the battery voltage using a digital multimeter (page 17-6).
Start the engine.
Measure the charging voltage (page 17-7).
Compare the measurements to the result of the following calculation.
MEASURED BATTERY VOLTAGE < MEASURED
CHARGING VOLTAGE < 15.5 V
Do the battery and charging voltages satisfy the calculation?
YES
NO
5. Wire Harness Inspection
Perform the wire harness inspection (page 17-10).
Is battery voltage present when tested as described?
NO
YES
6. Alternator Inspection
Remove the alternator (page 17-10).
Disassemble the alternator and inspect the following:
– rotor coil (page 17-12)
– brush length (page 17-13)
– stator coil (page 17-13)
Does the alternator test OK?
NO
YES
– Faulty battery.
– GO TO STEP 2.
– Shorted wire harness.
– GO TO STEP 3.
– Loose or poor contact terminal or connector.
– GO TO STEP 4.
– Faulty battery.
– GO TO STEP 5.
– Open circuit in wire harness.
– GO TO STEP 6.
– • Faulty rotor coil.
• Worn brush.
• Faulty stator coil.
– Faulty regulator/rectifier.
BATTERY/CHARGING SYSTEM
17-5