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2-42
2-42
3. 3.16
16 Li Line C
ne Con
Error code: 40
Error code: 40
Display: "40". All truck operations inhibited. Line contactor HOLD and ST contactor HOLD.
Display: "40". All
Situation
Situation
Traction motor and pump mot
Traction motor
operations inhibited except mast lowering operation.
operations inhibited except mast lowering operation.
Break of line fuse.
Break of line fuse.
Faulty line contactor.
Faulty line contactor.
Possible
Possible
Faulty right, left traction inverter or pump inverter.
Faulty right, left traction inverter or pump inverter.
cause
cause
Faulty DSP card in
Faulty DSP card in right, left traction inverter.
Faulty main harness.
Faulty main harness.
Faulty logic unit.
Faulty logic unit.
Trigger of
Trigger of
the error
the error
Inverter voltage data is checked when contactor is closed (400 ms).
Inverter voltage data is checked when contactor is closed (400
code
code
Checks
Checks
(1)
(1)
Turn off power, turn o
Turn off power, turn o
Erro
Er
(2)
(2)
Disconnect battery plug
Disconnect battery
work
work
Check continuity of
Check continuity of
Check continuity of the control line fuse for contactor coil
Check continuity of the control line fuse for contactor coil
C
C
o
o
n
n
t
t
(4)
(4)
Block whe
Block whe
and steering fuse
and steering fuse
Then confirm line
Then confirm line cont
step [
step [
]
]
14
14
Not
Not
operated
operated
(6)
(6)
Disconnect battery plug , t
Disconnect battery plug ,
work
work
(8)
(8)
Check to see if line contactor tip moves smoothly
Check to see if line contactor tip moves smoothly
Check line contactor tip for melting
Check line contactor tip for melting
Normal
Normal
(9)
(9)
Measure resistance of contactor coil
Measure resistance of contactor coil
[44Ω at -30 °C(-22 °
[44Ω at -30 °C(-22 °
Within
Within
(10)
(10)
Disconnect con
Disconnect con
Check continuity
Check continuity between
contac
contactor coil plus
tor coil plus
Check continuity between
Check continuity
contactor coil plus
contac
tor coil plus
Continuity
Continuity
(12)
(12)
Perform inverter discharging work, then replace logic
Perform inverter discharging work, then replace logic
card of logic unit
card of logic unit
onta tact ctor F
or Fau
ault (
lt (40
40) )
truck operations inhibited. Line contactor HOLD and ST contactor HOLD.
and pump motor operation
right, left traction inverter.
n powe
n powe
r again
r
again. Co
. Co
nfirm error code
nfirm error code
"
"
"
"
"
"
ror
r
cod
co
d
e
e
40
40
(
(
Not
No
t
Erro
Er
ror
r
41
41
plug,
,
then perform inverter d
then perform inverter d
the line fuse
the line fuse
for inverters
for inverters
i
i
n
n
u
u
i
i
t
t
y
y
N
N
o
o
c
c
o
o
n
n
t
t
i
i
els
els
, and remove
, and remove
the traction fuse
the traction fuse
, pump fuse
, pump fuse
contactor operat
actor
operation in self
ion in self
Operated
Operated
then perform in
hen perform in
verter dischargin
verter dischargin
Abnormal
Abnormal
.
.
F) to 65Ω at 80 °C(176 °F)]
F) to 65Ω at 80 °C(176 °F)]
range
range
Out
Out
of
of
nectors
nectors
E-04
E-04
betweenE-04-63 and line
E-04-63 and line
(+)
(+)
betweenE-04-59 and line
E-04-59 and line
(-)
(-)
No
No
continuity
continuity
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
or operation inhibited. If this fault
inhibited. If this fault occurs before
display
display
.
.
"
"
)
)
(3)
(3)
ischarging
ischarging
See trouble shooting code
See trouble shooting code
n
n
u
u
i
i
t
t
y
y
(5)
(5)
Replace the failed fuse
Replace the failed fuse
-
-
diagnosis
diagnosis
(7)
(7)
g
g
Go to step (14)
Go to step (14)
range
range
(11)
(11)
Replace line contactor
Replace line contactor
(13)
(13)
Repair or
Repair or replace
occurs before ST contactor CL
ST contactor CLOSE, all
ms).
"
"
"
"
Er
Erro
ror
r
cod
co
d
e
e
41
41
"
"
"
"
41
41
replacemain Harness
main Harness
501137
501137
OSE, all
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