9-087
TROUBLESHOOTING
2-7-11. Horn does not sound
Reference Fig. : 2-7-3
Check point
Check/Cause
Action
1. Horn
Disconnect horn and directly connect battery positive
terminal to horn terminal wire LgW side and negative
terminal to horn terminal wire B side.
If horn does not sound, horn is faulty.
•
•
Replace horn.
2. Horn Relay
(A-7)
(1) when starter switch is ON and horn switch is pressed,
measure voltage between horn relay (A-7) terminal 2
outlet wire Lg and chassis ground.
Standard voltage : 24 V or more
(2) when starter switch is ON and horn switch is pressed,
measure voltage between horn relay (A-7) terminal 5
outlet wire LgW and chassis ground.
Standard voltage : 24 V or more
If above item (1) is OK and item (2) is NG, horn relay
(A-7)
is faulty.
•
Replace horn relay (A-7).
3. Horn Switch
when horn switch is OFF, measure resistance between
horn switch terminals.
Standard resistance : 100 kΩ or more
If resistance is abnormal, horn switch is faulty.
•
•
Replace horn switch.
4. Harness Connecting
Between Terminals
Measure resistance of harness connecting between
terminals.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.
2-7-12. Backup buzzer does not sound
Reference Fig. : 2-7-3
Check point
Check/Cause
Action
1. Backup Buzzer
Disconnect backup buzzer and directly connect battery
positive terminal to backup buzzer terminal wire GB side
and negative terminal to backup buzzer terminal wire B
side.
If backup buzzer does not sound, backup buzzer is faulty.
•
•
Replace backup buzzer.
2. Backup Buzzer Switch
(1) when starter switch is ON, measure voltage between
backup buzzer switch terminal COM inlet wire R and
chassis ground.
Standard voltage : 24 V or more
(2) when starter switch is ON and F-R lever is “R”,
measure voltage between backup buzzer switch
terminal NO outlet wire GB and chassis ground.
Standard voltage : 24 V or more
If above item (1) is OK and item (2) is NG, backup buzzer
switch is faulty.
•
Replace backup buzzer
switch.
3. Harness Connecting
Between Terminals
Measure resistance of harness connecting between
terminals.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.
Содержание SV540 Series
Страница 1: ...SV540 SHOP MANUAL 3498 6418A 0 ...
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Страница 13: ...SAFETY ...
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Страница 23: ...SPECIFICATIONS ...
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Страница 43: ...ENGINE AND CONTROLS ...
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Страница 53: ...HYDRAULIC SYSTEMS ...
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Страница 85: ...ELECTRICAL SYSTEM ...
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Страница 119: ...VIBRATORY DRUM REAR AXLE ...
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Страница 179: ...INSPECTION AND ADJUSTMENT ...
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Страница 207: ...TROUBLESHOOTING ...
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