2
4
ELECTRONIC FUEL INJECTION - AFC
C
ont
ro
l
Unit
The control
u
nit is located in the engine compartment within a cavity welded to the right-hand wheel
well.
The contro
l
unit proc
es
s
es information concerning
the
fo
ll
owing:
Volume of intak
e a
ir
Tempera
t
ure of i
nt
a
k
e
a
ir
Motor rpm
Motor temper
atu
re
Intake air sensor
deflec
tion
(
fu
l
l load)
It
determ ines an
d
c
ontro I
s
th
e
injection sequence and
duration.
The electronic con
tro
l
u
n
i
t is composed of printed
circuits
and
int
egr
at
e
d c
i
rc
u
it components.
It is fitted wi
t
h
a
pp
rox
imately 80 components
.
The
printed
ci
rcu
it
board is secured to the control
unit a
n
d presse
d
in
to th
e
socket until
a
spring snaps
into
place.
Code
e
xp
l
a
nation
:
A Control
u
n
it
1
Contro
l m
ul
ti
vibrator
1
a Imp
u
l
se
an
d rpm divider
2
Multipl
ier
st
age
2a Warm-up enrich
m
e
n
t
3 Output st
a
ge
4
Fuel injector
5 Series resistor
I
Control voltage
f
rom i
ntake-air se
n
s
or
la Control
impulse
f
r
om
distributor
c
o
n
t
a
ct
br
e
ak
er point
s
II Control signal from throttle
switch
Iia Control voltage from
s
tarte
r sw
i
t
ch/
tempe
rature sensor II
1
0
