2-79
2-79
501164
501164
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.3
3.34
4 Att
Attach
achmen
ment 2 Le
t 2 Lever
ver, Fa
, Fault
ulty Se
y Setti
tting (H
ng (H4)
4)
Error code: H4
Error code: H4
Situation
Situation
Display: "H4" flashes.
Display: "H4" flashes. Pump motor and power steering operations inhibited. Pump contactor OPEN if this fault
Pump motor and power steering operations inhibited. Pump contactor OPEN if this fault
occurs when turning on power. Pump contactor CLOSE if this fault
occurs when turning on power. Pump contactor CLOSE if this fault occurs during pump operation and then
occurs during pump operation and then
OPEN if truck stops.
OPEN if truck stops.
Possible
Possible
cause
cause
Key switch turned on while operating attachment 2 lever, faulty
Key switch turned on while operating attachment 2 lever, faulty attachment 2 control lever or attachment 2
attachment 2 control lever or attachment 2
switch, faulty main harness, faulty logic unit, faulty input unit.
switch, faulty main harness, faulty logic unit, faulty input unit.
Trigger of
Trigger of
the error
the error
code
code
Detects attachment 2 control lever signal of CAN when turning on
Detects attachment 2 control lever signal of CAN when turning on power (FC specification). Detects
power (FC specification). Detects
attachment 2 microswitch when turning on
attachment 2 microswitch when turning on power (MC specification).
power (MC specification).
Checks
Checks
(1)
(1)
If
If
this
this
fault
fault
occurred
occurred
during
during
If
If
this
this
fault
fault
occurred
occurred
when
when
pump
pump
motor
motor
operation
operation
turning
turning
on
on
power
power
(2) Sit on seat, then stop pump motor operation
(2) Sit on seat, then stop pump motor operation
If
If
fault
fault
remains
remains
Normal
Normal
(4) Turn off power. Sit on seat, then turn on power again
(4) Turn off power. Sit on seat, then turn on power again
without
without
attachment
attachment
2
2
opera
opera
tion
tion
I
I
f
f
f
f
a
a
u
u
l
l
t
t
r
r
e
e
m
m
a
a
i
i
n
n
s
s
E
E
r
r
r
r
o
o
r c
r c
o
o
d
d
e
e
"
"
54
54
"
"
or
or
"
"
67
67
"
"
or
or
"
"
(L)
(L)
"
"
(8) Change attachment 2 control lever to other normal
(8) Change attachment 2 control lever to other normal
control lever
control lever
Not
Not
changed
changed
Error
Error
changed
changed
(12) Replace attachment 2 switch
(12) Replace attachment 2 switch
(7) Disconnect connector E-36 of microswitch
(7) Disconnect connector E-36 of microswitch
Sit on seat, then turn on power again
Sit on seat, then turn on power again
If
If
fault
fault
remains
remains
Normal
Normal
(11) Disconnect battery plug, then perform inverter
(11) Disconnect battery plug, then perform inverter
discharging work
discharging work
(9) Repair or replace
(9) Repair or replace
FC-IN harness
FC-IN harness
(10) Replace attachment
(10) Replace attachment
2
2
contro
contro
l lev
l lev
er
er
(5) Turn off power
(5) Turn off power
(6) Refer to error code
(6) Refer to error code
"54", "67" or "(L)"
"54", "67" or "(L)"
(13) Check continuity between E-04-48 and E-36-5(121)
(13) Check continuity between E-04-48 and E-36-5(121)
Chec
Chec
k shor
k shor
t circuit between E-
t circuit between E-
36-5
36-5
and
and
E-36-6
E-36-6
Continui
Continui
ty,
ty,
Not
Not
shorted
shorted
No
No
continui
continui
ty,
ty,
Shorted
Shorted
MC
MC
specification
specification
FC specification
FC specification
(3) Fail-sa
(3) Fail-sa
fe
fe
function
function
Содержание FB13PNT
Страница 2: ......
Страница 12: ......
Страница 86: ...1 73 1 73 Fig 5 Fig 5 500969 500969...
Страница 264: ...4 13 4 13...
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...
Страница 266: ...5 1 5 1...
Страница 267: ...5 2 5 2...
Страница 268: ...5 3 5 3...
Страница 269: ...5 4 5 4...
Страница 270: ...5 5 5 5...
Страница 271: ...5 6 5 6...
Страница 272: ...5 7 5 7...
Страница 273: ...5 8 5 8...
Страница 274: ...5 9 5 9...
Страница 275: ...5 10 5 10...
Страница 276: ...5 11 5 11...
Страница 277: ...5 12 5 12...
Страница 278: ...5 13 5 13...
Страница 279: ...5 14 5 14...
Страница 280: ...5 15 5 15...
Страница 281: ...5 16 5 16...
Страница 282: ...5 17 5 17...
Страница 283: ...5 18 5 18...
Страница 284: ...5 19 5 19...
Страница 285: ...5 20 5 20...
Страница 286: ...5 21 5 21...
Страница 287: ...5 22 5 22...
Страница 288: ...5 23 5 23...
Страница 289: ...5 24 5 24...
Страница 290: ...5 25 5 25...
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...