Sakai SW800 Series, Shop Manual

Page: 99 / 159

4-204
Troubleshooting for Electric System
a) Starter is inoperative. (2/2)
10
YES
NO
8
YES
NO
Is specified voltage
fed to safety relay
terminal S that car-
ries wire GW(WB)?
Is specified voltage
fed to F-R lever
switch terminal that
carries wire W(BW)?
Possible cause
Remedy
9
Is specified voltage
fed to F-R lever
switch terminal that
carries wire BW(LB)?
A
• 20~28V
• Turn starter switch
to START.
B
YES
NO
11
Is specified voltage
fed to starter switch
terminal C that car-
ries wire BW(LB)?
YES
NO
• 20~28V
• Turn starter switch
to START.
• 20~28V
• Turn starter switch
to START.
Safety relay faulty.
Renew.
Wire W or wire GW(WB) from
F-R lever switch to safety
relay terminal S not connected
or incorrectly connected (in-
cluding fuse).
• Renew fuse.
• Repair or
renew wire.
F-R lever switch faulty.
Renew.
to "B" on this page
• 20~28V
• Turn starter switch
to START.
Wire BW(LB) from starter switch
terminal C to F-R lever switch
not connected or incorrectly con-
nected.
Repair or renew
wire.
Starter switch faulty
(between B and C).
Renew.
Electric wiring diagram for mode E-01 (a)
* Wire color codes in parentheses ( ): SW800
➡
From Machine No.10123
SW850
➡
From Machine No.10127
Codes with no parentheses
➡
Common to both models
B
BR
C
ACC
Starter
switch
Battery
B
WG
RB
65A
（
L
）
BY
Diode
BR
LgW
BW
Battery relay
BR
E
F-R lever
switch
NC
NO
COM
W
20A
65A
Fuse
GW
Alternator
L
B
R
E
LgB
R
LgW
B
Safety relay
B C E S R
Starter
B
C
B
E
SW8004001
Fusible link
NC
NO
COM
(BrY)
(LB)
(BW) (WB)
Y
LB
Gy
F-R lever switch
Fusible link
SW800: From Machine No.10123
SW850: From Machine No.10127
Diode
Interlock circuit
From fuse
To starter
motor relay