Sakai TW504 - Brake Cannot be Released

10-026
TROUBLESHOOTING
2-3-3. Brake cannot be released
Parking brake switch must be released.
Brake pedal is not depressed.
Reference Fig.: 2-3-1
Check point Check/Cause Action
1. Parking Brake Solenoid Disconnect harness and measure resistance of coil.
Standard resistance : 9.0 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 RW 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 WB 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. Foot Brake Switch (1) When starter switch is ON, measure voltage between
foot brake switch terminal inlet wire RY and chassis
ground.
Standard voltage : 12 V or more
(2) When starter switch is ON, measure voltage between
foot brake switch terminal outlet wire RW 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.
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.
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•