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2-102
2-102
3. 3.45
45 EP
EPS Co
S Cont ntro roll ller F
Error code: 71
Error code: 71
Display: "71". All
Display: "71". All operations inhibited except mast lowering operation. Line steering contactor OPEN. Traveling
Situation
Situation
speed limited to 5 km/h.
speed limited to 5 km/h.
Faulty main harness or connector E-08 comes off.
Faulty main harness or connector E-08 comes off.
(Communication between logic
(Communicatio
Possible
Possible
Faulty logic unit.
Faulty logic unit.
cause
cause
Display fault.
Display fault.
PS Controller fault.
PS Controller fault.
ROM SUM value of pump inverter is different from check data.
ROM SUM value of pump inverter is different from check data.
Trigger of
Trigger of
RAM of pump inverter is faulty.
RAM of pump inverter is faulty.
the error
the error
Communication between logic unit and PS
Communication between logic unit and PS controller is impossible.
code
code
No life signal is inputted.
No life signal is inputted.
Checks
Checks
(1) Disconnect battery plug, then perform inverter discharging work
(1) Disconnect battery plug, then perform inverter discharging work
(2) Remove connector E-08
(2) Remove connector E-08
Check the contact
Check the contact
Connect connector E-08 and tuning on power
Connect connector E-08 and tuning on power
(3) Disconnect battery plug, then perform inverter discharging work
(3) Disconnect battery plug, then perform inverter discharging work
(4) Disconnect connector E-01
(4) Disconnect connector E-01
Chec
Check
k
no
no con
Check no
Check no
Chec
Check
k
no con
no
Check no
Check no
No
No
Continuity
Continui
14V, 8V
14V, 8V
power
pow
er
su
supply
pply
(5)
(5) Disc
Disconnect connector E-08 and
onnect connector E-08 and
Check continuity
Chec
k continuity
Check continuity
Chec
k continuity
Check continuity
Chec
k continuity
Continuity
Continuity
CAN
CA
N
(6) Disconnect connector E-02 of logics Unit
(6) Disconnect connector E-02 of logics Unit
(Already disconnected E-01 and E-08)
(Already disconnected E-01 and E-08)
Chec
Check continuity between E-02-5
k continuity between E-02-5
Check continuity between E-02-6
Chec
k continuity between E-02-6
Continuity
Continuity
er Fau
ault lt (7 (71) 1)
operations inhibited except mast lowering operation. Line steering contactor OPEN. Traveling
n between logic unit and traction inverter.)
face bot
face
both of
h of
connector E
connector E
continuity between E-01-3
tinuity between E-01-3
and E-01-6
and E-01-6
continuit
continuit
y between
y between
E-01-3
E-01-3
and E-01-11
and E-01-11
continuity between E-01-4
tinuity between E-01-4
and E-01-6
and E-01-6
continuit
continuit
y between
y between
E-01-4
E-01-4
and E-01-11
and E-01-11
ty
Continui
Continuity
E-01 of logics U
E-01 of logics
between
between
E-01-4
E-01-4
and E-08-1(11)
and E-08-1(11)
between
between
E-01-6
E-01-6
and
and E-08-25(12
E-08-25(12)
between
between
E-01-3
E-01-3
and E-08-18(10
and
E-08-18(10)
No
No
Continuity
Continuity
and E-08-21(3
and
E-08-21(3)
and E-08-30(4
and
E-08-30(4)
No
No
continuity
continuity
6
6
5
5
4
4
4
4
1
1
0
0
9
9
8
8
8
8
(female)
(female)
(male)
(male)
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
unit and traction inverter.)
controller is impossible.
-08 on harness side and E-08 on inverter side
-08 on harness side and E-08 on inverter side
If fault (71) remains
If fault (71) remains
ty
Unit
nit
)
)
)
)
5
5
6
6
7
7
9
9
1
1
0
0
Emetrgency SW
Emetrgency SW
501153
501153
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