SANY LATIN AMERICA
7-79
SY195/205/215/225C9 Crawler Hydraulic Excavator
Troubleshooting
Shop Manual - June 2013
60
78
CANH
CANL
CANH
CANL
CN-1-112
(D-3)
1
2
1
2
CANH
CANL
CN-7-705
(D-12)
CN-1-111
(D-6)
CN-241F
(D-12)
1
2
3
1
2
3
3
1
3
1
22
29
20
21
F1
20A
F10
5A
29
22
0
3
4
8
9
10
12
3
4
8
9
10
12
3
4
8
9
10
12
ZX215-1005102
PWR
PWR
CONTROLLER
120
ȍ
RESISTANCE
MONITOR
CAB
CHASSIS HARNESS
E-12 Monitor displays nothing
Trouble
Display of monitor is illuminated but no information is
shown on the screen after machine is powered on.
Related information
Possible causes and standard value in normal state
Cause
Standard value in normal state/Remarks on troubleshooting
1
Failure of resis-
tance
●
Turn engine start switch to OFF position. Keep it at OFF position to
perform troubleshooting.
Between CN-1-112 1 and 2
Resistance
120
Ω
2
Open circuit of
wire harness
●
Turn engine start switch to OFF position. Keep it at OFF position to
perform troubleshooting.
Between CN-7-705 pin 3 and controller pin 60
Resistance
≤
1
Ω
Between CN-7-705 pin 4 and controller pin 78
≤
1
Ω
3
Short circuit of
wire harness
(grounded)
●
Turn engine start switch to OFF position. Keep it at OFF position to
perform troubleshooting.
Between harness (from CN-7-705 pin 3 to con-
troller pin 60) and ground
Resistance
≥
1M
Ω
Between harness (from CN-7-705 pin 4 to control-
ler pin 78) and ground
≥
1M
Ω
4
Failure of monitor
or controller
No troubleshooting can be done for it is internal failure. (If it is not one of
the failures stated above, it should be the failure of monitor or controller.)
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