1-38
1-38
CHAPTER 1 CONTROLLER
CHAPTER 1 CONTROLLER
6
6..
D
Diia
ag
gn
no
ossttiiccss
6
6..1
1
O
Ou
uttlliin
ne
e
Diagnostics
Diagnostics
6
6..2
2
O
Op
pe
erra
attiio
on
n P
Prro
occe
ed
du
urre
e
The controller
The controller monitors status o
monitors status of various input/o
f various input/output equipme
utput equipment to allow diag
nt to allow diagnostics of truck’s m
nostics of truck’s malfunction.
alfunction.
There is a diag
There is a diagnostics called
nostics called Self Diagnostic
Self Diagnostics, which perform
s, which performs equipment c
s equipment check during m
heck during maintenance.
aintenance.
M
Mo
od
de
e
D
De
essccrriip
pttiio
on
n
Di
Diag
agno
nost
stic
icss
Se
Self d
lf dia
iagn
gnos
osti
tics
cs
Ch
Chec
ecks f
ks fun
unct
ctio
ion of
n of el
elec
ectr
tric
ical s
al sys
yste
tems
ms..
Self diagnostics that exclusively checks the power steering system is also
Self diagnostics that exclusively checks the power steering system is also available.
available.
Turn on the key
Turn on the key switch and enter
switch and enter the diagnostics
the diagnostics mode using se
mode using service tool.
rvice tool.
Perform diagnostics by following the procedure below.
Perform diagnostics by following the procedure below.
Preparatory operations (excluding steering)
Preparatory operations (excluding steering)
(1)
(1) Place
Place the par
the parking br
king brake lev
ake lever in the l
er in the locked p
ocked positi
osition.
on.
(2)
(2) Tur
Turn O
n OFF
FF the
the key
key swi
switch
tch..
(3)
(3) Dis
Discon
connec
nect the ba
t the batte
ttery plu
ry plug.
g.
(4)
(4) Disch
Discharge
arge all
all inver
inverters
ters. . See
See page
page 1-53
1-53..
(5)
(5) Plac
Place the d
e the direc
irection l
tion lever i
ever in the N
n the N posit
position.
ion.
(6)
(6) Rem
Remove the l
ove the line fus
ine fuse (500 A) a
e (500 A) and stee
nd steering f
ring fuse (10
use (100 A).
0 A).
(7)
(7) Con
Connec
nect th
t the ba
e batte
ttery p
ry plug
lug..
Diagnostics procedure
Diagnostics procedure
Perform the procedure using the Self-Diagnostics table in
Perform the procedure using the Self-Diagnostics table in accordance with the following guide.
accordance with the following guide.
(1)
(1) Start diagno
Start diagnostics with the
stics with the Step 0 in t
Step 0 in the table. Withou
he table. Without sitting in
t sitting in the seat, tur
the seat, turn ON the
n ON the key switch acco
key switch according to t
rding to the
he
instruction in the “Do this” box on the Step 0 line.
instruction in the “Do this” box on the Step 0 line. If the item passes the check without any problem, the next step numbe
If the item passes the check without any problem, the next step numberr
“01” appears on the display.
“01” appears on the display.
If the item involves any problem and fails in the check, “dd” is shown on the display. The display also shows “dd” when
If the item involves any problem and fails in the check, “dd” is shown on the display. The display also shows “dd” when
diagnostics is started without rem
diagnostics is started without removing the fuse.
oving the fuse. In this case, diagnostics is prohibited from going even to the first step.
In this case, diagnostics is prohibited from going even to the first step.
(2)
(2) When t
When the Ste
he Step 0 has pas
p 0 has passed t
sed the che
he check, di
ck, diagnos
agnostics m
tics may
ay
advance to the Step 1 item (seat switch). Cycle the seat
advance to the Step 1 item (seat switch). Cycle the seat
switch OFF
switch OFF
6
6
ON
ON
6
6
OFF according to the instruction in
OFF according to the instruction in
the
the “Do this” box
“Do this” box on
on the Step
the Step 1 line.
1 line. If the it
If the item passes
em passes
the check, the next step number “02” appears on the
the check, the next step number “02” appears on the
display.
display.
Do likewise for the succeeding items, following the
Do likewise for the succeeding items, following the
instructions in the
instructions in the “Do this” column
“Do this” column boxes.
boxes. If the step
If the step
fails in the check, diagnostics does not advance
fails in the check, diagnostics does not advance
automatically.
automatically. In this case, diagnost
In this case, diagnostics can be forcibly
ics can be forcibly
advanced to the next step by pressing the R button on
advanced to the next step by pressing the R button on
the display or the
the display or the next button on the service tool.
next button on the service tool.
*Diagnostic items can be skipped by pressing the Skip
*Diagnostic items can be skipped by pressing the Skip
button on the service tool.
button on the service tool.
1.
1. Diag
Diagnosti
nostics result indicati
cs result indication
on
1
1
500946
500946
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