Sakai R2-4, Shop Manual

Page: 193 / 234

10-033
TROUBLESHOOTING
2-4-3. Brake does not work 2/2
Parking brake switch must be applied.
Foot brake switch must be OFF (Brake pedal is depressed).
Reference Fig.: 2-4-1
Check point Check/Cause Action
3. Parking Brake Switch (1) when starter switch is ON, measure voltage between
parking brake switch terminal 1 inlet wire WB 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 GW and
chassis ground.
There is no electricity in normal condition.
If above item (1) is OK and item (2) is NG, parking brake
switch is faulty.
•
Replace parking brake
switch.
4. Foot Brake Switch when starter switch is ON, measure voltage between
foot brake switch terminal NO outlet wire Bw and chassis
ground.
There is no electricity in normal condition.
If there is electricity, 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.
2-4-4. Speed cannot be changed
Speed change switch must be “ ”.
Reference Fig.: 2-4-1
Check point Check/Cause Action
1. Speed Change
Solenoid
Disconnect harness and measure resistance of coil.
Standard voltage : 8.5 Ω
If measured resistance is abnormal, speed change
solenoid is faulty.
•
•
Replace speed change
solenoid.
2. Speed Change Switch (1) when starter switch is ON, measure voltage between
speed change switch terminal 1 inlet wire WB and
chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
speed change switch terminal 2 outlet wire O and
chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) is NG, speed change
switch is faulty.
•
Replace speed change
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.
•
•
•