Advertisement
2-12
2-12
3. 3.4 4
Tr Trac acti tion
Error code: E5
Error code: E5
Controller/motor overheat indicator ON.
Controller/m
Situation
Situation
steering operations. Service tool "Alarm status" and "E5" displayed.
steering operations. Service tool "Alarm status" and "E5" displayed.
Overheating of right traction inverter, faulty right traction inverter thermal sensor, open harness wiring, faulty
Overheating of right traction inverter, faulty right traction inverter thermal sensor, open harness wiring, faulty
Possible
Possible
right traction inverter PC board, abnormal power supply of
right traction inverter PC board, abnormal power supply of logic unit, faulty radiation
cause
cause
faulty display unit.
faulty display unit.
Trigger of
Trigger of
Controller temperature is out of
Controller temperat
the error
the error
range of -25 °C to 110 °C (-13 °F to 230 °F).
range of -25 °C to 110 °C
code
code
Checks
Checks
(1) Let truck cool for 15 minutes
(1) Let truck cool for 15 minutes
Without service tool
Without service tool
(8) Disconnect battery plug. Wait until inverter
(8) Disconnect battery plug. Wait until inverter
temperature becomes close to room temperature
temperature becomes close to room temperature
(10) Perform inverter discharging work
(10) Perform inverter discharging work
on In Inve
vert rter er R. R.H. H., O
, Ove
verh rhea
otor overheat indicator ON. Poor pulling power and
ure is out of range of -25 °C
(-13 °F to 230 °F). Recovers when tempe
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
With service tool
With service tool
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
eati ting
ng (E (E5) 5)
Poor pulling power and acceleration. Normal pump motor and
logic unit, faulty radiation of right traction inverter,
range of -25 °C to 100 °C
to 100 °C (-13 °F to 21
(-13 °F to 212 °F). Capacitor temperature is out of
Recovers when temperature is in range of -20 to 70 °C (-4 to
(2) Right traction inverter becomes normal
(2) Right traction inverter becomes normal
(3) Check if truck is operated on steep upgrade or to pull
(3) Check if truck is operated on steep upgrade or to pull
large cargo load
large cargo load
(4) Perform inverter discharging work
(4) Perform inverter discharging work
Check thermal paste applied on inverter mounting
Check thermal paste applied on inverter mounting
Surface
Surface
Thermal paste film should be thin and even
Thermal paste film should be thin and even
Normal
Normal
(5) Replace right traction
(5) Replace right traction
inverter
inverter
(7) Confirm temperature of controller and head capacitor
(7) Confirm temperature of controller and head capacitor
with input monitor
with input monitor
Less
Less
than
than
o
o
r m
r
mo
o
r
r
e
e
t
t
acceleration. Normal pump motor and power
of right traction inverter,
2 °F). Capacitor temperature is out of
rature is in range of -20 to 70 °C (-4 to 158 °F).
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
If problem reoccurs
If problem reoccurs
Normal
Normal
Abnormal
Abnormal
(6) Clean mounting
(6) Clean mounting
surface,
surface,
apply thermal paste,
apply thermal paste,
then reinstall
then reinstall
-20
-20
°C(-
°C(-
4
4
°F)
°F)
-20
-20
h
h
a
a
n
n
7
7
0
0
°
°
C
C (
(1
1
5
5
8
8
°
°
F
F
)
)
(
(
- 4
- 4
°
°
(9) Normal
(9) Normal
501137
501137
power
158 °F).
inverter
inver
ter
°C
°C
to
to
70
70
°C
°C
F
F t
to
o
1
1
5
5
8
8
°
°
F
F
)
)
Advertisement
