Sakai TW504 - Engine will Not Start (Starter Motor Does Not Run) 2;3

10-094
TROUBLESHOOTING
SW504
4-2-1. Engine will not start (Starter motor does not run) 2/3
F-R lever must be in “N”.
Parking brake switch must be applied.
Brake pedal is not depressed.
Reference Fig.: 4-2-1
Check point Check/Cause Action
6. F-R Lever Switch (1) When starter switch is ON, measure voltage between F-R
lever switch terminal inlet wire RY and chassis ground.
Standard voltage : 12 V or more
(2) When starter switch is ON, measure voltage between F-R
lever switch terminal outlet wire LgR 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 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.
8. 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 2 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.
9. Interlock Relay (1) When starter switch is ON, measure voltage between interlock
relay terminal a inlet wire LgR and chassis ground.
Standard voltage : 12 V or more
(2) When starter switch is START, check continuity between
interlock relay terminal e inlet wire LR and c outlet wire L.
There is continuity in normal condition.
If above items (1) is OK and item (2) is NG, interlock relay is
faulty.
•
Replace interlock
relay.
10. Parking Interlock
Relay
(1) When starter switch is ON, measure voltage between parking
interlock relay terminal 1 inlet wire Y and chassis ground.
Standard voltage : 12 V or more
(2) When starter switch is START, check continuity between
parking interlock relay terminal 3 inlet wire LR and 5 outlet wire
BW.
There is continuity in normal condition.
If above items (1) is OK and item (2) is NG, parking interlock
relay is faulty.
•
Replace parking
interlock relay.
•
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