Checking The Charging Voltage; Checking The Horn - Yamaha 2007 XP500 Service Manual

b. Measure the stator coil resistance.
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EAS28170

CHECKING THE CHARGING VOLTAGE

1. Check:
Charging voltage
G
Out of specification → Correct the stator coil
condition.
Refer to "CHECKING THE STATOR COIL"
on page 8-115.
Rectifier/regulator input voltage
above 14 V at 5000 r/min
NOTE:
Make sure the battery is fully charged.
MMMMMMMMMMMMMMMMMMMMMM
a. Set the digital tachometer to the ignition coil
of cylinder #1.
b. Connect the pocket tester (AC 20 V) to the
battery terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Digital tachometer
90890-06760
YU-39951-B
Positive tester probe
Positive battery terminal
Negative tester probe
Nagative battery terminal
ELECTRICAL COMPONENTS
c. Start the engine and let it run at approximate-
ly 5000 r/min.
d. Measure the charging voltage.
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EAS28180

CHECKING THE HORN

1. Check:
Horn voltage
G
Out of specification → Properly connect or re-
pair the signaling system's wiring.
Horn voltage
12V
MMMMMMMMMMMMMMMMMMMMMM
a. Connect the pocket tester (20V DC) to the
horn terminal.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Tester positive probe
Brown "1"
Negative tester probe
Ground
b. Turn the main switch to "ON".
c. Measure the voltage (DC 12 V) of brown at
the horn coupler.
8-116
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