Charging System
•
Check the alternator output voltage, do the following pro-
cedures.
○
Remove:
Left Side Cover (see Side Cover Removal in the Frame
chapter)
Seat (see Seat Removal in the Frame chapter)
○
Clear the leads from the clamp [A].
○
Connect a tester to the connector [B] as shown in the table
1, using the needle adapter set.
○
Start the engine.
○
Run it at the rpm given in the table 1.
○
Note the voltage readings.
Special Tool - Needle Adapter Set: 57001-1457
Table 1, Alternator Output Voltage
Connections
Tester (+) to
White lead
If the output voltage shows the value in the table, the al-
ternator operates properly.
If the output voltage shows a much lower reading than that
given in the table indicates that the alternator is defective.
•
Check the stator coil resistance as follows.
○
Stop the engine.
○
Disconnect the alternator lead connector.
○
Connect the tester [A] to the connector [B] as shown in
the table 2.
○
Note the readings.
Table 2, Stator Coil Resistance
Connections
Tester (+) to
White lead
If there is more resistance than shown in the table, or no
tester reading (∞) the stator has an open lead and must
be replaced. Much less than this resistance means the
stator is shorted, and must be replaced.
•
Using the tester, measure the resistance between each
leads and chassis ground.
Any tester reading less than infinity (∞) indicates a short,
necessitating stator replacement.
If the stator coils have normal resistance, but the voltage
check showed the alternator to be defective; then the rotor
have probably weakened, and the rotor must be replaced.
Reading
@4 000 rpm
Tester (–) to
Ground
AC 48 V or more
Reading
Tester (–) to
0.2 ∼ 1.0 Ω
Ground
ELECTRICAL SYSTEM 15-23
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