SANY Crawler Hydraulic Excavator (SY195C9, SY205C9, SY215C9, SY225C9). Shop Manual (2013) - page 21
Troubleshooting
E212 (throttle motor current & motor connection abnormal)
User Code
Service Code
Throttle motor loading circuit is abnormal and the
Trouble
12
E212
engine acceleration fails.
When the power is on, magnitude of throttle motor coil current is out of the
Failure description
range of 0.1A~1.8A and lasts for 2 seconds.
Response from controller
The controller stops the motor driving system when this failure is detected.
Symptom of machine
Engine acceleration fails and the machine acts slowly.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Failure of throt-
1
form troubleshooting.
tle motor coil
Between CN-445M ③ and ⑥
Resistance
12.2 ȍ
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
2
Open circuit of
form troubleshooting.
harness
Unplug the controller and measure the resistance
Resistance
12.2 ȍ
between pin 113 and pin 105.
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Short circuit
form troubleshooting.
3
of harness
Unplug the connector CN-445M and measure the
(grounded)
resistance between motor ③ ( ⑥ ) and the hous-
Resistance
2M ȍ
ing.
No troubleshooting can be done for failure occurs in the inner of controller.
Internal failure
4
(Except for the above reasons, the controller must be replaced in case of
of controller
failure.)
5
CONTROLLER
CN-445M
THROTTLE MOTOR
GREEN
50#
1
1
SENSOR 5V
75
507#
WHITE
THRTL FEEDBACK VOLT.
55
2
2
MT-
RED
MT-
3
3
113
M
4
4
GND WIRE
55
0#
YELLOW
5
5
MT+
105
MT+
BLUE
6
6
CAB
CHASSIS HARNESS
ZX215-1005071
7-31
Troubleshooting
E213 (throttle motor operation suspends)
User Code
Service Code
Operation of throttle motor suspends and engine
Trouble
13
E213
acceleration fails.
The controller monitoring accuracy deviates by over 5%, which is normally
Failure description
between 0.8 - 4.2 Voltage, after the system is powered on for 30 seconds.
Response from controller
The controller stops the motor driving system when this failure is detected.
Symptom of machine
Engine acceleration fails and the machine acts slowly.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Failure of throttle
1
form troubleshooting.
motor coil
Between CN-445M ③ and ⑥
Resistance
12.2 ȍ
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
2
perform troubleshooting.
power supply
Between CN-445M ① and ⑤
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Open circuit of
form troubleshooting.
3
harness
Unplug the controller and measure the resistance
Resistance
12.2 ȍ
between pin 113 and pin 105.
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of throttle
4
perform troubleshooting.
position sensor
Between CN-445M ② and ground
Voltage
0.8V~3.5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Short circuit
form troubleshooting.
5
of harness
Unplug the connector CN-445M and measure the
Resistance
2M ȍ
(grounded)
resistance between motor ③ ( ⑥ ) and the housing.
No troubleshooting can be done for failure occurs in the inner of controller.
Internal failure of
6
(Except for the above reasons, the controller must be replaced in case of
controller
failure.)
CONTROLLER
CN-445M
THROTTLE MOTOR
GREEN
50#
1
1
SENSOR 5V
75
507#
WHITE
THRTL FEEDBACK VOLT.
55
2
2
MT-
RED
MT-
3
3
113
M
4
4
GND WIRE
55
0#
YELLOW
5
5
MT+
105
MT+
BLUE
6
6
CAB
CHASSIS HARNESS
ZX215-1005071
7-32
Troubleshooting
E214 (throttle motor working range abnormal)
User Code
Service Code
Throttle motor working range is abnormal and the
Trouble
14
E214
engine returns to auto idle.
The voltage is below 0.8V at the minimal stroke or above 4.2V at the maximal
Failure description
stroke, and it lasts for 100msec when the power is on.
Response from controller
Turn the throttle to idle speed.
Symptom of machine
Engine returns to auto idle.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Failure of throt-
1
form troubleshooting.
tle motor coil
Between CN-445M ③ and ⑥
Resistance
12.2 ȍ
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
2
perform troubleshooting.
power supply
Between CN-445M ① and ⑤
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Open circuit of
form troubleshooting.
3
Unplug the controller and measure the resistance
harness
Resistance
12.2 ȍ
between pin 113 and pin 105.
Failure of
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
4
throttle position
perform troubleshooting.
Between CN-445M ② and ground
Voltage
0.8V—3.5V
sensor
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Short circuit
form troubleshooting.
5
of harness
Unplug the connector CN-445M and measure the
(grounded)
resistance between motor ③ ( ⑥ ) and the hous-
Resistance
2M ȍ
ing.
No troubleshooting can be done for failure occurs in the inner of controller.
Internal failure
6
(Except for the above reasons, the controller must be replaced in case of
of controller
failure.)
CONTROLLER
CN-445M
THROTTLE MOTOR
GREEN
50#
1
1
SENSOR 5V
75
507#
WHITE
THRTL FEEDBACK VOLT.
55
2
2
MT-
RED
MT-
3
3
113
M
4
4
GND WIRE
55
0#
YELLOW
5
5
MT+
105
MT+
BLUE
6
6
CAB
CHASSIS HARNESS
ZX215-1005071
7-33
Troubleshooting
E015 (power supply voltage abnormal)
User Code
Service Code
Trouble
Power supply voltage is abnormal.
15
E015
Failure description
Voltage of power supply is above 36V when the machine is running.
Response from controller
The system stops the motor and solenoid valve automatically.
Symptom of machine
Engine acceleration fails and the machine acts slowly.
Cause
Standard value in normal state/Remarks on troubleshooting
Failure of
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
1
power sup-
troubleshooting.
Measure battery voltage
Voltage
25V
ply
Ɣ Turn engine start switch to OFF position. And Then, keep the engine running
Alternator
to perform troubleshooting.
2
Measure the voltage between the alternator terminal
abnormal
Voltage
About 28V
B and ground.
3
4
CN-613
SAFETY RELAY
START SWITCH
1
L
S
TERMINAL
B BR ACC R1 R2 C
2
3
R
HEAT
4
E
P
OFF
5
ON
6
START
1
2
F-107
CN-800M
G
R
L
P
B
E
0
ALTERNATOR
-
+
-
+
BATTERY RELAY
0
CAB
CHASSIS HARNESS
ZX215-1005072
7-34
Troubleshooting
E116 (controller internal temperature abnormal)
User Code
Service Code
Internal temperature of controller is abnormal. Engine
Trouble
16
E116
acceleration fails and the machine acts slowly.
Internal temperature of controller keeps above 80°C or below -30°C for 10 sec-
Failure description
onds when the power is on.
Response from controller
The controller stops the motor and the solenoid coil.
Symptom of machine
Engine acceleration fails and the machine acts slowly.
Cause
Standard value in normal state/Remarks on troubleshooting
Internal
No troubleshooting can be done for failure occurs in the inner of controller. (If this
1
failure of
failure occurs, replace the controller.)
controller
2
3
4
5
7-35
Troubleshooting
E017 (abnormal output of 5v power supply in sensor)
User Code
Service Code
Trouble
Abnormal output of power supply in sensor
17
E017
The controller detects out over current or short circuit of sensor power source
Failure description
output when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
—
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
Short circuit
troubleshooting.
1
in harness
Measure the resistance between pin 56, pin 75, pin 74 of
Resistance
2M ȍ
(grounded)
controller KC-MB and the ground.
Internal
No troubleshooting can be done for failure occurs in the inner of controller. (Except
2
failure of
for the above reasons, the controller must be replaced in case of failure.)
controller
3
4
5
7-36
Troubleshooting
E118 (abnormal communication between controller and monitor)
User Code
Service Code
Abnormal communication between controller and
Trouble
18
E118
monitor
Communication of monitor is interrupted for 5 consecutive times when the
Failure description
power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
—
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Failure of CAN
1
form troubleshooting.
resistance
Between CN-7-709 ① and ②
Resistance
60 ȍ
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Open circuit of
Unplug the controller and measure the resistance
2
1 ȍ
harness
between pin 60 and CN-7-705 ③
Resistance
Unplug the controller and measure the resistance
1 ȍ
between pin 78 and CN-7-705 ④
No troubleshooting can be done for failure occurs in the inner of controller.
Internal failure
3
(Except for the above reasons, the controller must be replaced in case of
of controller
failure.)
4
CN-7-709
CANH
1
1
120ȍ RESISTANCE
2
2
CANL
CONTROLLER
CN-7-705
CANH
3
3
3
CANL
4
4
4
29
8
8
8
22
9
9
9
CANH
60
CN-1-111
0
10
10
10
1
1
CN-441
12
12
12
2
2
CANL
78
3
3
3
3
1
1
F1
20A
22
F10
5A
29
20
21
PWR PWR
CAB
CHASSIS HARNESS
ZX215-1005073
7-37
Troubleshooting
E320 (abnormality in front pump output pressure)
User Code
Service Code
Front pump output pressure is abnormal. Only output
Trouble
20
E320
alarm is enabled. .
A pressure feedback voltage other than 0.25~4.75V keeps more than 200msec
Failure description
when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
—
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Failure of 5V
form troubleshooting.
1
power supply
Between CN-115M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Open circuit of
form troubleshooting.
2
Between CN-115M C and pin 72 of controller
1 ȍ
signal wire
Resistance
Between CN-115M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
3
of signal wire
form troubleshooting.
(grounded)
Between CN-115M C and ground
Resistance
2M ȍ
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-115M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
FRONT PUMP
CN-446M
PRESS. SENSOR
501#
FRONT PUMP PRESSUSRE
72
C
SIGNAL
SIGNAL COLLECTING PORT
00#
54
B
GND WIRE
GND WIRE
50#
5VḤPWR SUPPLY
56
A
5V
CAB
CHASSIS HARNESS
ZX215-1005074
7-38
Troubleshooting
E321 (abnormality in rear pump output pressure)
User Code
Service Code
Reading of rear pump output pressure is abnormal.
Trouble
21
E321
Only output alarm is enabled. .
A pressure feedback voltage other than 0.25~4.75V keeps more than 200msec
Failure description
when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
—
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-116M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Open circuit of
2
Between CN-116M C and pin 53 of controller
1 ȍ
signal wire
Resistance
Between CN-116M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
3
of signal wire
form troubleshooting.
Between CN-116M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at OFF position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-116M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
CN-447M
REAR PUMP
PRESS. SENSOR
502#
REAR PUMP PRESSURE
53
C
SIGNAL
SIGNAL COLLECT PORT
00#
54
B
GND WIRE
GND WIRE
50#
5VḤPWR SUPPLY
56
A
5V
CAB
CHASSIS HARNESS
ZX215-1005075
7-39
Troubleshooting
E322 (abnormality in arm-in pilot pressure)
User Code
Service Code
Arm-in pilot pressure is abnormal. Only output alarm
Trouble
22
E322
is enabled. .
A pressure feedback voltage other than 0.25~4.75V keeps more than 200msec
Failure description
when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
The arm in motion is slow.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-128M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Open circuit
2
Between CN-128M C and pin 71 of controller
1 ȍ
of signal wire
Resistance
Between CN-128M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
3
of signal wire
form troubleshooting.
Between CN-128M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of
4
perform troubleshooting.
sensor
Between CN-128M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
CN-428M
ARM-IN PILOT
PRESS. SENSOR
203#
ARM-IN PILOT PRESSURE
71
C
SIGNAL
SIGNAL COLLECTING PORT
00#
54
B
GND WIRE
GND WIRE
50#
56
5V
A
5VḤPWR SUPPLY
CAB
CHASSIS HARNESS
ZX215-1005076
7-40
Troubleshooting
E323 (abnormality in arm-out pilot pressure)
User Code
Service Code
Reading of arm-out pilot pressure is abnormal. Only
Trouble
23
E323
output alarm is enabled.
A pressure feedback voltage other than 0.25 - 4.75V keeps more than
Failure description
200msec when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Arm-out motion is slow.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-122M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Open circuit
2
Between CN-122M C and pin 52 of controller
1 ȍ
of signal wire
Resistance
Between CN-122M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
3
of signal wire
troubleshooting.
(grounded)
Between CN-122M C and ground
Resistance
2M ȍ
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-122M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
ARM-OUT PILOT
CN-122M
PRESS. SENSOR
202#
ARM-OUT PILOT PRESSURE
52
C
SIGNAL
SIGNAL COLLECTING PORT
00#
54
B
GND WIRE
GND WIRE
50#
5VḤPWR SUPPLY
56
A
5V
CAB
CHASSIS HARNESS
ZX215-1005077
7-41
Troubleshooting
E324 (abnormality in boom-raise pilot pressure)
User Code
Service Code
Reading of boom-raise pilot pressure is abnormal.
Trouble
24
E324
Only output alarm is enabled. .
A pressure feedback voltage other than 0.25 - 4.75V keeps more than
Failure description
200msec when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Boom-raise motion is slow.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-126M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Open circuit
2
Between CN-126M C and 70 pin of controller
1 ȍ
of signal wire
Resistance
Between CN-126M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
3
of signal wire
troubleshooting.
Between CN-126M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of
4
perform troubleshooting.
sensor
Between CN-126M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
CN-126M
BOOM-RAISE PILOT
PRESS. SENSOR
206#
BOOM-RAISE PILOT PRESS.
70
C
SIGNAL
SIGNAL COLLECTING PORT
00#
54
B
GND WIRE
GND WIRE
50#
5VḤPWR SUPPLY
56
A
5 V
CAB
CHASSIS HARNESS
ZX215-1005078
7-42
Troubleshooting
E325 (abnormality in boom-lower pilot pressure)
User Code
Service Code
Reading of boom-lower pilot pressure is abnormal.
Trouble
25
E325
Only output alarm is enabled. .
A pressure feedback voltage other than 0.25 - 4.75V keeps more than
Failure description
200msec when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Boom-lower motion is slow.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-125M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Open circuit
2
Between CN-125M C and pin 51 of controller
1 ȍ
of signal wire
Resistance
Between CN-125M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
3
of signal wire
troubleshooting.
Between CN-125M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of
4
perform troubleshooting.
sensor
Between CN-125M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
CN-125M
BOOM-LOWER PILOT
PRESSURE SENSOR
207#
BOOM-LOWER PILOT PRESS
51
C
SIGNAL
SIGNAL COLLECTING PORT
00#
B
GND WIRE
GND WIRE
54
50#
5 V
5VḤPWR SUPPLY
56
A
CAB
CHASSIS HARNESS
ZX215-1005079
7-43
Troubleshooting
E326 (abnormality in bucket-curl pilot pressure)
User Code
Service Code
Reading of bucket-curl pilot pressure is abnormal.
Trouble
26
E326
Only output alarm is enabled. .
A pressure feedback voltage other than 0.25 - 4.75V keeps more than 200msec
Failure description
when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Bucket-curl motion is low.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-124M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Open circuit of
2
Between CN-124M C and 69 pin of controller
1 ȍ
signal wire
Resistance
Between CN-124M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
3
of signal wire
troubleshooting.
Between CN-124M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-124M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
BUCKET-DIG PILOT
CN-124M
PRESSURE SENSOR
205#
BUCKET-DIG PILOT PRESS.
69
C
SIGNAL
SIGNAL COLLECTING PORT
00#
54
B
GND WIRE
GND WIRE
50#
5VḤPWR SUPPLY
56
A
5V
CAB
CHASSIS HARNESS
ZX215-1005080
7-44
Troubleshooting
E327 (abnormality in bucket-dump pilot pressure)
User Code
Service Code
Reading of Bucket-dump pilot pressure is abnormal.
Trouble
27
E327
Only output alarm is enabled. .
A pressure feedback voltage other than 0.25 - 4.75V keeps more than 200msec
Failure description
when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Bucket-dump motion is low
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-128M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
form troubleshooting.
Open circuit of
2
Between CN-128M C and pin 50 of controller
1 ȍ
signal wire
Resistance
Between CN-128M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
3
of signal wire
form troubleshooting.
Between CN-128M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-128M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
CN-128M
BUCKET-DUMP PILOT
PRESSURE SENSOR
204#
BUCKET-DUMP PILOT PRESS.
50
C
SIGNAL
SIGNAL COLLECTING PORT
00#
54
B
GND WIRE
GND WIRE
50#
5VḤPWR SUPPLY
56
A
5V
CAB
CHASSIS HARNESS
ZX215-1005081
7-45
Troubleshooting
E328 (abnormality in swing pilot pressure
User Code
Service Code
Reading of swing pilot pressure is abnormal. Only
Trouble
28
E328
output alarm is enabled. .
A pressure feedback voltage other than 0.25 - 4.75V keeps more than
Failure description
200msec when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Swinging motion is slow.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-123M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Open circuit of
2
Between CN-123M C and pin 68 of controller
1 ȍ
signal wire
Resistance
Between CN-123M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
3
of signal wire
troubleshooting.
Between CN-123M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at OFF position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-123M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
CN-123M
SWING PILOT
PRESS. SENSOR
208#
SWING PILOT PRESSURE
68
C
SIGNAL
SIGNAL COLLECTING PORT
00#
B
GND WIRE
GND WIRE
54
50#
5VḤPWR SUPPLY
56
A
5 V
CAB
CHASSIS HARNESS
ZX215-1005082
7-46
Troubleshooting
E329 (abnormality in left travel pilot pressure)
User Code
Service Code
Reading of left travel pilot pressure is abnormal.
Trouble
29
E329
Only output alarm is enabled. .
A pressure feedback voltage other than 0.25 - 4.75V keeps more than
Failure description
200msec when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Left travel speed is low. Travel deviates.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-120M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Open circuit of
2
Between CN-120M C and pin 49 of controller
1 ȍ
signal wire
Resistance
Between CN-120M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
3
of signal wire
troubleshooting.
Between CN-120M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at OFF position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-120M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
CN-120M
L. TRAVEL PILOT
PRESS. SENSOR
L. TRAVEL PILOT PRESSURE
200#
49
C
SIGNAL
SIGNAL COLLECTING PORT
00#
54
B
GND WIRE
GND WIRE
50#
5 V
5VḤPWR SUPPLY
56
A
CAB
CHASSIS HARNESS
ZX215-1005083
7-47
Troubleshooting
E330 (abnormality in right travel pilot pressure)
User Code
Service Code
Reading of right travel pilot pressure is abnormal.
Trouble
30
E330
Only output alarm is enabled. .
A pressure feedback voltage other than 0.25 - 4.75V keeps more than
Failure description
200msec when the power is on.
Response from controller
Only output alarm is enabled.
Symptom of machine
Right travel speed is low. Travel deviates.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-121M A and B
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Open circuit of
2
Between CN-121M C and pin 67 of controller
1 ȍ
signal wire
Resistance
Between CN-121M B and ground
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to perform
3
of signal wire
troubleshooting.
Between CN-121M C and ground
Resistance
2M ȍ
(grounded)
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of sen-
4
perform troubleshooting.
sor
Between CN-121M C and ground
Voltage
0.5±0.2V
5
CONTROLLER
R. TRAVEL PILOT
CN-121M
PRESS. SENSOR
201#
R. TRAVEL PILOT PRESSURE
67
C
SIGNAL
SIGNAL COLLECTING PORT
00#
GND WIRE
54
B
GND WIRE
50#
5VḤPWR SUPPLY
56
A
5 V
CAB
CHASSIS HARNESS
ZX215-1005084
7-48
Troubleshooting
E231 (abnormality in fuel control dial set voltage)
User Code
Service Code
Voltage setting of fuel control dial is abnormal. En-
Trouble
31
E231
gine returns to auto idle.
The voltage of fuel control dial other than 0.25 - 4.75V keeps more than
Failure description
200msec when the power is on.
Response from controller
The throttle is switched to idle position.
Symptom of machine
Engine returns to auto idle speed.
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
Failure of 5V
1
perform troubleshooting.
power supply
Between CN-302F ① and ③
Voltage
About 5V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
2
Open circuit
form troubleshooting.
of signal wire
Between CN-302F ② and pin 34 of controller
Resistance
1 ȍ
Short circuit
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
3
of signal wire
form troubleshooting.
Between CN-302F ② and ground
Resistance
2M ȍ
(grounded)
Short circuit
Ɣ Turn engine start switch to OFF position. Then, keep it at ON position to
4
of signal wire
perform troubleshooting.
(contact with
Between CN-302F ② and ground
Voltage
5V
power supply)
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
5
Defective
form troubleshooting.
Unplug the connector CN-302F, and measure the
knob
Resistance
5K±15% ȍ
resistance between dial ① and ③
CN-142M
CN-131M
CN-302F
50#
YELLOW
1
1
1
1
75
SENSOR 5V
BLUE
506#
FUEL CTRL
2
2
2
2
DIAL
55
RED
GND WIRE
3
3
0#
3
3
FUEL CONTROL DIAL
34
SET VOLTAGE
CAB
ZX215-1005085
7-49
Troubleshooting
E237 (abnormality in hydraulic oil temperature)
User Code
Service Code
Hydraulic oil temperature is abnormal. Only output
Trouble
37
E237
alarm is enabled.
A voltage other than 0.2 - 4.75V, transformed from hydraulic oil temperature
Failure description
that is detected by controller, keeps more than 200msec.
Only output alarm is enabled. The alarm resets automatically when conditions
Response from controller
become normal.
Symptom of machine
—
Cause
Standard value in normal state/Remarks on troubleshooting
Ɣ Turn engine start switch to OFF position. Then, keep it at OFF position to
Failure of sen-
1
perform troubleshooting.
sor
Between CN-113M ① and ground
Voltage
0.2~4.75V
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
Open circuit of
2
form troubleshooting.
wire harness
Between CN-113M ① and pin 31 of controller
Resistance
1 ȍ
Short circuit of
Ɣ Turn engine start switch to OFF position. Keep it at OFF position to per-
3
wire harness
form troubleshooting.
(grounded)
Between CN-113M ① and ground
Resistance
1M ȍ
Ɣ Turn engine start switch to OFF position. Keep it at ON position to perform
Failure of 24V
4
troubleshooting.
power supply
Between CN-113M ② and ground
Voltage
About 24V
5
CN-152M
0#
1
1
240
CONTROLLER
2
2
HYDRAULIC OIL
CN-113M
TEMP SENSOR
HYDRAULIC OIL
31
1
1
SIGNAL
TEMP SENSOR
24V PWR
2
2
SUPPLY
24V PWR SUPPLY
CAB
CHASSIS HARNESS
ZX215-1005086
7-50