11-185
TROUBLESHOOTING
2-9. Lighting
Check following items before troubleshooting.
No blown fuse and power is applied up to fuses.
When measuring voltage and current without disconnecting connectors, refer to “measuring voltage and current
following using tester” (P. 11-006 to P. 11-008).
Check any ground circuit which belongs to components to be checked.
2-9-1. Head lamp and flood lamp do not light
Reference Fig. : 2-9-1
Check point
Check/Cause
Action
1. Each Bulb
Check that none of the lamp bulbs is burned out or has a
contact failure.
Bulb is faulty or poorly connected.
•
•
Replace each bulb.
2. Lighting Switch
(1) when starter switch is ON, measure voltage between
lighting switch terminal 1 inlet wire WR, terminal 4 inlet
wire W and chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON and lighting switch is “
”,
measure voltage between lighting switch terminal 3
outlet wire RW and chassis ground.
Standard voltage : 12 V or more
(3) when starter switch is ON and lighting switch is “ ”,
measure voltage between lighting switch terminal 5
outlet wire RL and chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) or (3) is NG, lighting
switch is faulty.
•
Replace lighting 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.
•
•
•
Summary of Contents for SW880-1
Page 1: ...SW880 1 990 1 SHOP MANUAL 3498 6568A 0 ...
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Page 15: ...SAFETY ...
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Page 25: ...SPECIFICATIONS ...
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Page 39: ...ENGINE AND CONTROLS ...
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Page 47: ...HYDRAULIC SYSTEMS ...
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Page 83: ...ELECTRICAL SYSTEM ...
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Page 125: ...VIBRATORY DRUM ...
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Page 171: ...BRAKE ...
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Page 175: ...OPERATOR STATION ...
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Page 179: ...WATER SPRAY SYSTEM ...
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Page 183: ...INSPECTION AND ADJUSTMENT ...
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