2-9
2-9
501136
501136
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.
3.3
3
Pu
Pump
mp Mo
Moto
tor,
r,Ov
Over
erhe
heat
atin
ing(
g(E2
E2))
Error code: E2
Error code: E2
Situation
Situation
Controller/m
Controller/motor overheat indicator ON. Lifting
otor overheat indicator ON. Lifting speed slower than normal.
speed slower than normal. Normal traction motorand power
Normal traction motorand power
steering operations. Service tool "Alarm status" and "E2" displayed.
steering operations. Service tool "Alarm status" and "E2" displayed.
Possible
Possible
cause
cause
Overheating of pump motor, faulty pump motor or thermal sensor, faulty
Overheating of pump motor, faulty pump motor or thermal sensor, faulty or open harness wiring, faulty p
or open harness wiring, faulty pump
ump
motor inverter DSP card, abnormal power supply of logic unit,
motor inverter DSP card, abnormal power supply of logic unit, abnormal oil pressure of gear pump or hydraulic
abnormal oil pressure of gear pump or hydraulic
lines, faulty display unit.
lines, faulty display unit.
Trigger of
Trigger of
the error
the error
code
code
Motor tempera
Motor temperature is out of range of -25 °C to 145
ture is out of range of -25 °C to 145 °C (-13 °F to 293 °F).
°C (-13 °F to 293 °F).
Recovers when motor te
Recovers when motor temperature is in range of -20 to 70 °C (-4 to
mperature is in range of -20 to 70 °C (-4 to 158 °F).
158 °F).
Checks
Checks
(1) Let truck cool for 15 minutes
(1) Let truck cool for 15 minutes
Overheat
Overheat
indicator
indicator
ON
ON
Overheat
Overheat
indicator
indicator
OFF
OFF
(2) Pump motor becomes normal
(2) Pump motor becomes normal
(3) Check if truck is operated to lift large cargo load
(3) Check if truck is operated to lift large cargo load
(4) Perform inverter discharging work
(4) Perform inverter discharging work
(5) Check oil pressure of gear pump and hydraulic lines
(5) Check oil pressure of gear pump and hydraulic lines
Normal
Abnormal
Normal
Abnormal
(6) Replace pump motor
(6) Replace pump motor
(7) Repair or replace
(7) Repair or replace
gear pump or piping
gear pump or piping
(8) Co
(8) Co
nfirm temperature of pump
nfirm temperature of pump
motor with
motor with
input/output monitor
input/output monitor
Less
Less
than
than
-20
-20
°C(-
°C(-
4
4
°F)
°F)
-20
-20
°C
°C
to
to
70
70
°C
°C
or
or
m
m
o
o
re
re
t
t
ha
ha
n
n
70
70
°
°
C
C
(1
(1
5
5
8
8
°
°
F
F
)
)
(-4
(-4
°
°
F t
F t
o
o
15
15
8 °
8 °
F)
F)
(10) Normal
(10) Normal
(9) Disconnect battery plug
(9) Disconnect battery plug
Wait until
Wait until
pump
pump
motor t
motor t
emperaturebecomes clos
emperaturebecomes clos
e t
e t
o
o
room t
room t
emperatur
emperatur
e
e
(11) Perform inverter discharging work
(11) Perform inverter discharging work
(12) Dis
(12) Dis
conn
conn
ect connec
ect connec
tor E-16
tor E-16
of pump
of pump
motor
motor
speed and thermal sensor. Measure resistance
speed and thermal sensor. Measure resistance
between E
between E
-16-2
-16-2
and E-16-1
and E-16-1
2.2kΩ at 70°C
2.2kΩ at 70°C
(158°F) to
(158°F) to
82kΩ
82kΩ
at
at
-20°C
-20°C
(-4°F)
(-4°F)
Out
Out
of
of
range
range
(13) Replace pump motor
(13) Replace pump motor
If problem reoccurs
If problem reoccurs
Normal
Normal
With service tool
With service tool
Without service tool
Without service tool
Содержание FB13PNT
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Страница 86: ...1 73 1 73 Fig 5 Fig 5 500969 500969...
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Страница 265: ...CHAPTER 5 CIRCUIT DIAGRAM CHAPTER 5 CIRCUIT DIAGRAM Ch Chap apte ter 5 r 5 C CIR IRCU CUI IT DI T DIA AGR GRAM AM...
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Страница 281: ...5 16 5 16...
Страница 282: ...5 17 5 17...
Страница 283: ...5 18 5 18...
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Страница 292: ...9 9 9 9 7 7 5 5 9 9 5 5 M M 3 3 0 0 0 0 P P N N F F o o r r k k l l i i f f t t T T r r u u c c k k s s...