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Chapte
Cha
pter 2
r 2 TRO
1 1 . .
G G e e n n e e r r a a l In
1. 1.1 1
B B ef efor ore r
e rep
Do not replace devices casually even if replacement is required as a result of troubleshooting. Be sure to check the following
Do not replace devices casually even if replacement is required as a result of troubleshooting. Be sure to check the following
items before replacing devices (logic unit, logic card, power supply card, inverters, inverter DSP cards, EPS, input unit and
items before replacing devices (logic unit, logic card, power supply card, inverters, inverter DSP cards, EPS, input unit and
output unit).
output unit).
- -
Loos ose e ba
Lo
batt tter ery y co
- -
Abno
Ab
norm
rmal al wi wire re ha
- -
L L o o o o s s e c
e co o n n n n e e c c t t o o r r s s
- -
Br Brok
oken
en, b , ben
ent o
- -
D D i i r r t t y c
y co o n n n n e e c c t t o o r r s s
If connectors are dirty, remove the connector and clean connectors.
If connectors are dirty, remove the connector and clean connectors.
See "How to clean harness connectors and system components" on page 2-2.
See "How to clean harness connectors and system components" on page 2-2.
- -
Ensure that t
Ensur
e that the main ha
If any of these items (above items) is a source of the trouble, the device will be damaged even if it
If any of these items (above items) is a source of the trouble, the device will be damaged even if it is replaced with a new one.
Be sure to check the above items and replace carefully.
Be sure to check the
1. 1.2 2
Conn
Co
nnec ecti tion
(1) Tur
(1)
Turn of
n off th
f the tr
e truck
(2 (2) ) Re
Remo
move c
ve cup ho
up hold lder er. .
(3)
(3) Find t
Find the con
he connect
(4) Remo
(4)
Remove the
ve the cove
(5) Tur
(5)
Turn on
n on the
the tru
(6) Star
(6)
Start th
t the se
e servic
TROUBL
UBLESH
ESHOOT
OOTING
l Inf f or orm m a a t t i i o o n n
epl l ac
aci i ng
ng d d ev
evic ice e s s
conn
nnec ecto tors rs
harn rnes ess c
s con
onne
nect ctio ions ns
t or l r loo
oose se co
conn
nnec ecto tor p
r pin ins s
he main harness i
rness is not sho
s not short-ci
rt-circui
(1)
(1) Disc
Disconnect batt
onnect
battery plug and disc
working on electrical system
working on electrical system
(2) Disc
(2)
Disconnect connector E-01
onnect connector E-01
E-01-15(106) and truck body (logic unit installation bolts, etc.)
E-01-15(106) and truck body (logic unit installation bolts, etc.)
No
No
continuity
continuity
(
(
3
3
)
)
N
N
o
o
r
r
m
m
a
a
l
l
above items and replace carefully.
on of of th the e se serv rvic ice e to tool ol
uck pow
power er. .
nector E-0
or E-09 to th
9 to the ser
e service t
vice tool.
ool.
cover and c
r and conne
onnect the
ct the PC as sh
PC as shown.
truck p
ck powe
ower. r.
rvice t
e tool
ool softw
software.
are.
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
ING FOR
FOR CON
CONTRO
TROL C
rcuited to t
ted to the tru
he truck body b
ck body by using t
y using the follo
ery plug and
discharge the inverters
harge the inverters
of logic unit.
of logic unit.
Check c
Check
continui
Continuity
Continuity
(
(
4
4
)
)
R
R
e
e
p
p
a
a
i
i
r
r
o
o
own.
L CIRC
IRCUIT
UITS S
he following pr
wing proced
ocedures
ures. .
and EPS
and EPS
before
before
ontinuity between
ty between
r
r
r
r
e
e
p
p
l
l
a
a
c
c
e
e
h
h
a
a
r
r
n
n
e
e
s
s
s
s
is replaced with a new one.
1
1
502882
502882
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2
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