Honda VTR1000F Service Manual page 288

NOTE:
Be sure that the battery is in good condition before
performing this test.
Start the engine and warm it up to the operating
temperature; stop the engine.
Connect the multimeter between the positive and
negative terminals of the battery.
CAUTION :
• To prevent short, make absolutely certain which
are the positive and negative terminals or cable.
• Do not disconnect the battery or any cable in the
charging system without first switching off the
ignition switch. Failure
to
follow this precaution
can damage the tester or electrical components.
With the headlight Hi beam, restart the engine.
Measure the voltage on the multitester when the
engine runs at 5,000 min- 1 (rpm)
REGULATED VOLTAGE:
13.5-15.5 V/5,000 min- 1 (rpm)
The charg ing system is normal if the voltage reads
the regulated voltage on the tester.
NOTE:
The speed at which voltage starts to rise cannot be
checked as it varies with the temperature and loads
on the alternator.
A frequently discharged battery is an indication
that it is deteriorated even if it proves normal in the
regulated voltage inspection.
The charging circuit may be abnormal if any of the
following symptoms is encountered:
1. Voltage not raised to regulated voltage (page 16-
3)
• Open or short circuit in the charging system
wire harness or poorly connected connector
• Open or shorted alternator
• Faulty regulator/rectifier
2. Regulated voltage too high (page 16-4)
• Poorly grounded regulator/rectifier
• Faulty battery
• Faulty regulator/rectifier
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BATTERY ICHARGING SYSTEM
NORMAL CHARGING VOLTAGE
CONTROL
VOLTAGE
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BATTERY
VOLTAGE
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ENGINE SPEED- min- 1 (rpm)
ABNORMAL CHARGING VOLTAGE
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ENGINE SPEED- min- 1 (rpm)
16-7