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EFI SYSTEM
-
Syst
em
Descript
ion
SYSTEM
DESCRIPTION
I
=
;::.
Futl Pulution
Fuol
Pump
Fu•ITank
r-::':
•
......
~
'rm
ISC
V1lve
Prt:tsurt
~
Regulat
-
or
.;,.,
C~ld
51
/
~Aif
Flow
Mtter
v
~
~
-~
ij
Stort
Injector
M~
..61
Air Temp.
Time
Swh~./:
Sensor
Oxygon
Sensor
ECU
lenition
Switch
~
I
,.
l
;o-
-v
....-.
~
=-
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~ ~
(
~R
T.,mNI
VF
Chock
~
~~
i
n o
Warning
'
i lht
O.tcl<
Connecl«
The
EFI
used
on
Toyotas
has
three
bosle
systems.
FUEL
SYSTEM
An
electric fuel
pum.p supplies sufficient
fuel,
un-
der a
constant
pressure. to
the
EFI
injectors.
These injectors inject
a metered quantity
of
fuel
into
the Intake
manif
old in accordance
with
signals
from
the
ECU.
Each injector
injects,
at
tho same
t
ime,
one hell
of
the
f
uel
required
f
or ideal
combustion
with
each
engine
revolution.
AIR
INDUCTION
SYSTEM
The
air
induction
system
provides
sufficient
olr for
engi
ne
operation.
p
..
rr&l[
OUtiOn
Sensor
. II
U
I'
....
Sen•<>r
w~
...
Ttmp.
StnlOf
Oi.
n
ributOr
~
~
Speed
.......,.
Sensor
;t
~ndit-
lgniti<ln
c;;«
w/ lgnit
tr
Nouml
Start
Switch
I
For AfT)
.-J
....
~
ELECTRONIC CONTROL SYSTEM
The
5M-GE engine is
equipped with a Toyota
Com·
puter
Control System
ITCCSI
w
hich
c.
e
ntrelly con-
trols
the
EFI, ESA. EGR,
Diagnosis
systems. etc.
by means
of
an Electronic Control
Uni
t
IECU
-
formerty
EFI
computer I
employing a
microcomputer.
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