Page 518 - 2019 SHOP MANUAL CRF1000/A/D

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BATTERY/CHARGING SYSTEM
CHARGING VOLTAGE INSPECTION

Make sure the battery is in good condition before
performing this test.
Start the engine and warm it up to the operating
temperature; then stop the engine. [1]
Open the battery box lid (page 21-5).
Connect the multimeter between the positive terminal
[1] and negative terminal [2] of the battery.

• To prevent a 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 on high beam, restart the engine. [2]
Measure the voltage on the multimeter when the engine
-1
runs at 5,000 min (rpm).
STANDARD:
Measured BV < Measured CV < 15.5 V
• BV = Battery Voltage (page 21-5)
• CV = Charging Voltage
If the charging voltage reading is out of the
specification, inspect the regulator/rectifier (page 21-8).

REGULATOR/RECTIFIER
REMOVAL/INSTALLATION

Disconnect the alternator 3P (Gray) connector [1] and
regulator/rectifier 3P (Black) connector [2]. [1]
Remove the bolts [3] and regulator/rectifier [4].
Installation is in the reverse order of removal.
[3]

[2] [4]
SYSTEM INSPECTION
Check connectors for loose contact or corroded
terminals.
Inspect the following items:
– Battery charging line (page 21-9)
– Ground line (page 21-9)
– Charging coil (page 21-9)
If all components of the charging system are normal
and there are no loose connections at the regulator/
rectifier connectors, replace the regulator/rectifier.

21-8