11-123
TROUBLESHOOTING
2-5-6. Brake cannot be released
Parking brake switch must be released.
Foot brake switch must be ON (Brake pedal is not depressed).
Check whether exact meter multiple display shows no error code.
Reference Fig.: 2-5-1
Check point
Check/Cause
Action
1. Parking Brake Solenoid Disconnect harness and measure resistance of coil.
Standard voltage : 12.3 Ω
If measured resistance is abnormal, parking brake
solenoid is faulty.
•
•
Replace parking brake
solenoid.
2. 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 Y 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.
3. Exact Meter Relay
(1) when starter switch is ON, measure voltage between
exact meter relay terminal 1, 3 inlet wire LgY and
chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage of coil
between exact meter relay terminal 1 and terminal 2.
There is no electricity in normal condition.
(3) when starter switch is ON, measure voltage between
exact meter relay terminal 4 outlet wire LgR and chassis
ground.
Standard voltage : 12 V or more
If above items (1) and (2) are OK and item (3) is NG,
exact meter relay is faulty.
•
Replace exact meter
relay.
4. Foot Brake Switch
(1) when starter switch is ON, measure voltage between
foot brake switch terminal COM inlet wire wY and
chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
foot brake switch terminal NC outlet wire LgY 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.
5. 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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Page 209: ...TROUBLESHOOTING ...
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