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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.32 2 Til
3.3
Tilt L
Error code: H2
Error code: H2
Situation
Situation
Possible
Possible
cause
cause
Trigger of
Trigger of
the error
the error
code
code
Checks
Checks
(1)
(1)
(2) Sit on seat, then stop pump motor operation
(2) Sit on seat, then stop pump motor operation
If
If
fault
fault
(4) Turn off power
(4) Turn off power
Sit on seat, then turn on power again without tilt
Sit on seat, then turn on power again without tilt
operation
operation
If f
If
(5) Turn off power
(5) Turn off power
MC
MC
specification
specification
(8) Disconnect connector E-36 of microswitch
(8) Disconnect connector E-36 of microswitch
Sit on seat,
Sit on seat,
(11) Disconnect battery plug, then perform inverter
(11) Disconnect battery plug, then perform inverter
discharging work
discharging work
(13) Check continuity between E-04-50 and E-36-3(66)
(13) Check continuity between E-04-50 and E-36-3(66)
Check
Check s
Continui
Continuity,
t Leve
ever, r, Fau
Faulty
lty Set
Settin
ting (
g (H2)
Display: "H2" flashes.
Display: "H2" 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
OPEN if truck stops.
OPEN if truck stops.
Key switch turned on while operating tilt lever, faulty tilt control lever or tilt
Key switch turned on while operating tilt
logic unit, faulty input unit.
logic unit, faulty input unit.
Detects tilt control lever signal of CAN
Detects tilt control lever signal of CAN when turning on power (FC specification). Detects tilt microswitch when
turning on power (MC
turning on power (MC specification).
specification).
If
If
this
this
fault
fault
occurred
occurred
during
during
pump
pump
motor
motor
operation
operation
remains
remains
(3) Fail-safe function
(3) Fail-safe function
fau
ault r
lt
rem
emai ains
ns
E
E
rr rror c
or
cod
ode
e
"54
"5
(6) Refer to error code
(6) Refer to error code
"54", "67" or "(L)"
"54", "67" or "(L)"
then
then
turn
turn
on
on
power
power
again
again
If
If
fault
fault
remains
remains
short circuit between E-36-3
hort circuit between E-36-3
ty,
Not
Not
shorte
shorte
No
No
continui
continui
H2)
lever, faulty tilt control lever or tilt switch, faulty main harness, faulty
when turning on power (FC specification). Detects tilt microswitch when
Normal
Normal
4
"
"
or
or
"
"
67
67"
"
or
or
"
"
(L)
(L)"
"
FC specification
FC specification
(7) Change tilt control lever to other normal control lever
(7) Change tilt control lever to other normal control lever
(9) Repair or replace
(9) Repair or replace
FC-IN harness
FC-IN harness
Normal
Normal
(12) Replace tilt switch
(12) Replace tilt switch
and E-36-6
and E-36-6
ty
ty
,
,
Shorted
Shorted
occurs during pump operation and then
switch, faulty main harness, faulty
If
If
this
this
fault
fault
occurred
occurred
turning
turning
on
on
power
power
Not
Not
changed
changed
Error
Error
(10) Replace tilt control
(10) Replace tilt control
501162
501162
2-75
2-75
when
when
changed
changed
lever
lever
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