SANY LATIN AMERICA
7-50
SY195/205/215/225C9 Crawler Hydraulic Excavator
Troubleshooting
Shop Manual - June 2013
User Code
Service Code
Trouble
Hydraulic oil temperature is abnormal. Only output
alarm is enabled.
37
E237
Failure description
A voltage other than 0.2 – 4.75V, transformed from hydraulic oil temperature
that is detected by controller, keeps more than 200msec.
Response from controller
Only output alarm is enabled. The alarm resets automatically when conditions
become normal.
Symptom of machine
—
Possible causes and standard value in normal
state
Cause
Standard value in normal state/Remarks on troubleshooting
1
Failure of sen-
sor
●
Turn engine start switch to OFF position. Then, keep it at OFF position to
perform troubleshooting.
Between CN-113M
①
and ground
Voltage
0.2~4.75V
2
Open circuit of
wire harness
●
Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Between CN-113M
①
and pin 31 of controller
Resistance
≤
1
Ω
3
Short circuit of
wire harness
(grounded)
●
Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Between CN-113M
①
and ground
Resistance
≥
1M
Ω
4
Failure of 24V
power supply
●
Turn engine start switch to OFF position. Keep it at ON position to perform
troubleshooting.
Between CN-113M
②
and ground
Voltage
About 24V
5
31
1
2
1
2
CN-113M
1
2
1
2
CN-152M
0#
ZX215-1005086
240
CONTROLLER
HYDRAULIC OIL
TEMP SENSOR
SIGNAL
24V PWR
SUPPLY
24V
PWR SUPPLY
CAB
CHASSIS HARNESS
HYDRAULIC OIL
TEMP SENSOR
E237 (abnormality in hydraulic oil temperature)
https://www.tractormanualpdf.info/