9-042
TROUBLESHOOTING
2-4-4. Brake cannot be released 1/2
Parking brake switch must be released.
Brake pedal is not depressed.
Reference Fig.: 2-4-1
Check point
Check/Cause
Action
1. Parking Brake Solenoid Disconnect harness and measure resistance of coil.
Standard resistance : 12.3
± 1.2
Ω
If measured resistance is abnormal, parking brake
solenoid is faulty.
•
•
Replace parking brake
solenoid.
2. Pump Neutral Relay
(A3)
(1) When starter switch is ON, measure voltage between
pump neutral relay terminal 1 inlet wire BrW and
chassis ground.
Standard voltage : 12 V or more
(2) When starter switch is ON, measure voltage between
pump neutral relay terminal 3 inlet wire GW and chassis
ground.
Standard voltage : 12 V or more
(3) When starter switch is ON, measure voltage between
pump neutral relay terminal 5 outlet wire LY and chassis
ground.
Standard voltage : 12 V or more
If above items (1) and (2) are OK and item (3) is NG,
pump neutral relay is faulty.
•
Replace pump neutral
relay (A3).
3. Pump Neutral Holding
Relay (A4)
(1) When starter switch is ON, measure voltage between
pump neutral holding relay terminal 1 inlet wire LY and
chassis ground.
Standard voltage : 12 V or more
(2) When starter switch is ON, measure voltage between
pump neutral holding relay terminal 3 inlet wire R and
chassis ground.
Standard voltage : 12 V or more
(3) When starter switch is ON, measure voltage between
pump neutral holding relay terminal 5 outlet wire GW and
chassis ground.
Standard voltage : 12 V or more
If above items (1) and (2) are OK and item (3) is NG,
pump neutral holding relay is faulty.
•
Replace pump neutral
holding relay (A4).
4. 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.
•
•
Summary of Contents for SV414
Page 1: ...SV414 SHOP MANUAL 3498 64214 0 ...
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Page 13: ...SAFETY ...
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Page 22: ......
Page 23: ...SPECIFICATIONS ...
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Page 37: ...ENGINE AND CONTROLS ...
Page 38: ......
Page 45: ...HYDRAULIC SYSTEMS ...
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Page 93: ...ELECTRICAL SYSTEM ...
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Page 126: ......
Page 127: ...VIBRATORY DRUM REAR AXLE ...
Page 128: ......
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Page 174: ......
Page 175: ...BRAKE ...
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Page 185: ...INSPECTION AND ADJUSTMENT ...
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Page 213: ...TROUBLESHOOTING ...
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