Table of Contents
Out of specification → Replace the rectifier/
regulator.
Charging voltage
above 14 V at 5000 r/min
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a. Set the engine tachometer to the ignition
coil of cylinder #1.
b. Connect the pocket tester (AC 20 V) to the
rectifier/regulator coupler as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe
Red "1"
• Negative tester probe
Black "2"
c. Start the engine and let it run at approxi-
mately 5000 r/min.
d. Measure the rectifier/regulator input volt-
age.
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EAS28180
CHECKING THE HORN
1. Check:
• Horn resistance
Out of specification → Replace.
Horn resistance
1.01–1.11 Ω at 20°C (68°F)
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a. Disconnect the horn leads from the horn
terminals.
b. Connect the pocket tester (Ω × 1) to the
horn terminals.
ELECTRICAL COMPONENTS
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe
Horn terminal "1"
• Negative tester probe
Horn terminal "2"
c. Measure the horn resistance.
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2. Check:
• Horn sound
Faulty sound → Adjust or replace.
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a. Connect a battery (12 V) to the horn.
b. Turn the adjusting screw in direction "a" or
"b" until the specified horn sound is
obtained.
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EAS28190
CHECKING THE ENGINE OIL LEVEL
GAUGE
1. Drain:
• Engine oil
2. Remove:
• Engine oil level gauge
(from the oil pan)
3. Check:
• Engine oil level gauge resistance
8-125
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