9-024
TROUBLESHOOTING
2-3-1. Machine moves neither forward nor backward 2/2
Parking brake switch must be released.
Foot brake switch must be ON (Brake pedal is not depressed).
F-R lever must not be “N”.
Reference Fig.: 2-3-1
Check point
Check/Cause
Action
5. Diode Unit
(1) when starter switch is ON and F-R lever is “N”,
measure voltage between diode unit terminal I inlet wire
W and chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON and F-R lever is “N”,
measure voltage between diode unit terminal H outlet
wire GW and chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) is NG, diode unit is
faulty.
•
Replace diode unit.
6. F-R Lever Switch
(1) when starter switch is ON, measure voltage between
F-R lever switch terminal COM inlet wire R and chassis
ground.
Standard voltage : 12 V or more
(2) when starter switch is ON and F-R lever is “N”,
measure voltage between F-R lever switch terminal NC
outlet wire W and chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) is NG, F-R lever
switch is faulty.
•
Replace F-R lever
switch.
7. Foot Brake Switch
(1) when starter switch is ON, measure voltage between
foot brake switch terminal COM inlet wire R and chassis
ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
foot brake switch terminal NO outlet wire LgR and
chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) is NG, foot brake
switch is faulty.
•
Replace foot brake
switch.
8. Parking Brake Switch
(1) when starter switch is ON, measure voltage between
parking brake switch terminal 1 inlet wire LgR and
chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
parking brake switch terminal 3 outlet wire BrW and
chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) is NG, parking brake
switch is faulty.
•
Replace parking brake
switch.
9. 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 SV410-2
Страница 1: ...SV410 2 SHOP MANUAL 3498 6404A 0 ...
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Страница 23: ...SPECIFICATIONS ...
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Страница 41: ...ENGINE AND CONTROLS ...
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Страница 89: ...ELECTRICAL SYSTEM ...
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