2-3
2-3
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3
3..
T
Trro
ou
ub
blle
essh
ho
oo
ottiin
ng
g
3.
3.1
1
Tr
Trac
acti
tion
on Mo
Moto
tor
r R.
R.H.
H.,O
,Ove
verh
rhea
eati
ting
ng (E
(E0)
0)
Error code: E0
Error code: E0
Situation
Situation
Controller/mo
Controller/motor overheat indicator ON.
tor overheat indicator ON. Poor pulling power and
Poor pulling power and acceleration. Normal pump motor and
acceleration. Normal pump motor and power
power
steering operations. Service tool "Alarm status" and "E0" displayed.
steering operations. Service tool "Alarm status" and "E0" displayed.
Possible
Possible
cause
cause
Overheating of right side traction motor, faulty right side traction motor or thermal sensor, faulty or
Overheating of right side traction motor, faulty right side traction motor or thermal sensor, faulty or open
open
harness wiring, faulty right traction inverter DSP card, abnormal power supply of
harness wiring, faulty right traction inverter DSP card, abnormal power supply of logic unit, brake or parking
logic unit, brake or parking
brake drag, abnormality in front axle, faulty display unit.
brake drag, abnormality in front axle, faulty display unit.
Trigger of
Trigger of
the error
the error
code
code
Motor temper
Motor temperature is out of range of -25 °C to 145
ature is out of range of -25 °C to 145 °C (-13 °F to 293 °F).
°C (-13 °F to 293 °F).
Recovers when moto
Recovers when motor temperature is in range of -20 to 70 °C (-4 to
r temperature is in range of -20 to 70 °C (-4 to 158 °F).
158 °F).
Checks
Checks
(1) Let t
(1) Let t
ruck c
ruck c
ool for 15 minutes
ool for 15 minutes
O
O
v
v
e
e
r
r
h
h
e
e
a
a
t
t
i
i
n
n
d
d
i
i
c
c
a
a
t
t
o
o
r
r
O
O
N
N
O
O
v
v
e
e
r
r
h
h
e
e
a
a
t
t
i
i
n
n
d
d
i
i
c
c
a
a
t
t
o
o
r
r
O
O
F
F
F
F
(2) Traction motor becomes normal
(2) Traction motor becomes normal
(3) Disconnect battery plug
(3) Disconnect battery plug
Disengage brake and parking brake, and check their
Disengage brake and parking brake, and check their
drag
drag
N
N
o
o
d
d
r
r
a
a
g
g
D
D
r
r
a
a
g
g
(4) Adjust brake
(4) Adjust brake
(6) Check if truck is operated on steep
(6) Check if truck is operated on steep
upgrade or to pull large cargo load
upgrade or to pull large cargo load
Normal
Normal
(9) Replace right traction
(9) Replace right traction
motor or front axle
motor or front axle
(8) Replace right traction
(8) Replace right traction
motor
motor
(5) Lift front wheels, and disengage parking brake
(5) Lift front wheels, and disengage parking brake
Turn key switch to OFF, rotate front wheels
Turn key switch to OFF, rotate front wheels
Confirm there is no difference in rotation load between
Confirm there is no difference in rotation load between
right and left
right and left
wheels
wheels
N
N
o
o
d
d
i
i
f
f
f
f
e
e
r
r
e
e
n
n
c
c
e
e
D
D
i
i
f
f
f
f
e
e
r
r
e
e
n
n
c
c
e
e
(7) Perform inverter discharging work
(7) Perform inverter discharging work
If problem reoccurs
If problem reoccurs
Summary of Contents for FB13PNT
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