SANY LATIN AMERICA
7-51
SY195/205/215/225C9 Crawler Hydraulic Excavator
Troubleshooting
Shop Manual - June 2013
User Code
Service Code
Trouble
Engine speed is abnormal. Only output alarm is en-
abled.
41
E541
Failure description
CPU detects out that engine speed is too low (below 100 rpm).
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
Normal condi-
tion
●
Code 41 will be displayed on the monitor when engine start switch is
turned from the OFF position to the ON position. This is normal as the en-
gine is not started.
2
Open circuit of
wire harness
●
Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Between CN-448M
①
and pin 38 of controller
Resistance
≤
1
Ω
Between CN-448M
②
and pin 19 of controller
≤
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-448M
①
and ground
Resistance
≥
1M
Ω
4
Failure of sen-
sor
●
Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Unplug the connector CN-448M, and measure the
resistance between the speed sensors's
①
and
②
.
Resistance 2.3±0.2k
Ω
5
E541 (abnormality in engine speed)
38
19
1
2
CN-448M
108A
108B
ZX215-1005087
PROBING
ENGINE SPEED
ENGINE SPEED
SENSOR
GND WIRE
CONTROLLER
SIGNAL
CAB
CHASSIS HARNESS
GND WIRE
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