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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.29 9 FNR L
3.2
FNR Leve
Error code: E
Error code: E
Situation
Situation
Possible
Possible
cause
cause
Trigger of
Trigger of
the error
the error
code
code
Checks
Checks
(1) Move direction lever to neutral, and release accelerator pedal
(1) Move direction lever to neutral, and release accelerator pedal
(2) Turn off power. Move direction lever to neutral
(2) Turn off power. Move direction lever to neutral
accelerator pedal, then turn on power again
accelerator pedal, then turn on power again
With service tool
With service tool
(3) Confirm SUO #47 setting
(3) Confirm SUO #47 setting
(7) Check direction lever and accelerator sensor operations
(7) Check direction lever and accelerator sensor operations
with input/ou
with
(
(
10
10
)
)
Turn off p
Tur
(
(
Check faulty unit if found with service tool
Check faulty unit if found with service tool
Direction
Direction
(12) Dis
(12)
Disconne
power
power
(13) Replace direction lever
(13) Replace direction lever
ever or Acc
r or Accele
elerat
rator, F
or, Faul
Display: "E". Traction motor operatio
Display: "E".
Traction motor operation inhibited. Normal pump and power steering oper
OPEN.
OPEN.
Key switch turned on while
Key switch turned on while direction lever was either in forward or reverse position, key switch
accelerator pedal was depressed, seat switch turned off during running, faulty direction lever switch, faulty
accelerator pedal was depressed, seat switch turned off during running, faulty direction lever switch, faulty
accelerator sensor, faulty main harness, faulty logic unit.
accelerator sensor, faulty main harness, faulty logic unit.
Detects following signal when turning on power.
Detects following signal when turning on power.
Direction lever:
Direction le
ver: F or R
F or R
Accelerator sensor voltage: More than 0.9 V
Accelerator sensor voltage: More than 0.9 V
If fault remains
If fault remains
Without service tool
Without service tool
Correct
Correct
(5) Set SUO #47 with
(5) Set SUO #47 with
service tool
service tool
input/output
tput
monitor
monitor
n off
pow
ower
er
lever
lever
Accelera
Accelerator
(11) Refer to error code "51"
(11) Refer to error code "51"
connect connec
ct
connector E-19
tor E-19
of direction lever
of direction lever
N
N
o
o
r
r
m
m
a
a
l
l
aulty Se
ty Setti
tting (E
ng (E) )
n inhibited. Normal pump and power steering operations. Line contactor
direction lever was either in forward or reverse position, key switch turned on while
, release
, release
(4) Disconnect connector E-02 or B-01
(4) Disconnect connector E-02 or B-01
Incorrect
Incorrect
If B-01 is disconnected , short circuit B-01-1 and B-01-3
If B-01 is disconnected , short circuit B-01-1 and B-01-3
(6) Turn on power
(6) Turn on power
(8) Connect connector E-02 or B-01
(8) Connect connector E-02 or B-01
)
)
tor
sensor
sensor
Turn on
Turn on
(
(
E
E
)
)
(14)
(14) D
Disco
(15) Check short circuit between E-03-15(21) and
(15) Check short circuit between E-03-15(21) and
E-03-36(104)
E-03-36(104)
E-03-37(103)
E-03-37(103)
ations. Line contactor
Not
Not
"
"
E
E
"
"
(9) Refer to troubleshooting
(9) Refer to troubleshooting
for code "51"
for code "51"
isconnect conn
nnect
connectors E-03
ectors E-03
and
and E-
E-02
N
N
, pump inverter
, pump inverter
terminal and
terminal and
Not
Not
shorted
shorted
501150
501150
2-69
2-69
turned on while
"
"
E
E
"
"
02
of logic unit
of logic unit
Shorted
Shorted
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