SANY LATIN AMERICA
7-81
SY195/205/215/225C9 Crawler Hydraulic Excavator
Troubleshooting
Shop Manual - June 2013
E-14 Incorrect engine coolant reading
Trouble
Engine coolant temperature sensor cannot correctly re
fl
ect cur-
rent coolant temperature.
Related information
Coolant temperature can be checked on the monitor.
Possible causes and standard value in normal state
Cause
Standard value in normal state/Remarks on troubleshooting
1
Failure of coolant
temperature sen-
sor
Standard values for engine coolant temperature sensor
50°C
80
Ω
60°C
56.3
Ω
80°C
29.5
Ω
100°C
16.5
Ω
106°C
14.3
Ω
120°C
10
Ω
2
Open circuit of
lead
●
Turn engine start switch to OFF position. Keep it at OFF position to
perform troubleshooting.
Between wire 510# and controller pin 30
Resistance
≤
1
Ω
3
Short circuit of
lead (grounded)
●
Turn engine start switch to OFF position. Keep it at OFF position to
perform troubleshooting.
Between wire 510# and ground
Resistance
≥
1M
Ω
4
Lead short to 24V
circuit
●
Turn engine start switch to OFF position. Keep it at OFF position to
perform troubleshooting.
Wire 510# to ground
Voltage
≤
1V
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偊
偒
510
30
ZX215-1005105
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