Group 28
Ignition
s
ystems
Des
ign
and
function
-
System
descriptions
2
1
+
•
•
417
6
•
•
5
"
419
•
•
,
3
2
,
,
'.71
11
EZ-115K
Control unit
2
.
R
eceives signal from
temperat
ure
sensor
(
84
) (
7
/
16
).
3
.
Tr
ansmi
t
s fault s
i
gnals to
te
st
term
inal (
417
)
(
1
7/
4
)
when test d
i
ode
is connected
.
4
.
Transmits knock
-co
ntrolled fuel
en
r
ic
hment
signal
t
o
fuel
sys
tem
control uni
t
(
217)
(
418)
.
6
.
Re
ce
ives
s
upp
ly
from battery
(1)
(1
/
1
)
across ignition sw
i
tch
(
2)
(31
1
)
.
7.
Receives
i
d
ling signal
from throttle switch
(198) (3/
49
).
8
.
Receives
toad
sig
nal fr
om
air mass
met
er (28
4
) (7/17)
via fuel
s
yst
em control
unit
(2
17)
(
418)
.
10
.
R
eceiv
e
s
signals
fr
om
speed
/posi
t
ion pic
k
-
up
(
41
3)
(7/2
5)
.
11
.
G
r
ounds screen of lead
from
s
peed
/
p
osi
t
ion
pick-up
(
4131
(71
25
),
1
2
.
Grounds
screen of
lead fr
om
knock sensor
I
(
lH
)
(
218)
(7/23)
.
13
.
R
eceives signal from
kn
ock senso
r I
(
lH)
(2
18
1
(7123)
.
16
.
Transm
i
t
s ignit
ion
pulses
t
o po
wer
stage
(
419
)
(4115
).
17
.
Tr
ansmi
t
s speed
in
f
orma
t
ion
to f
uel system
co
ntrol
unit
(
217
)1
418
).
la
.
R
eceives signal from
N
o.
1
cylinde
r
detector
(
416
)
(
7126
).
19
.
Re
ceiv
es
signal
fr
om
No
.
1
cylinde
r det
ec
t
o
r
(
416
)
(7126)
.
20
.
Grounds
control
un
i
t
(
260) (41
1
0)
.
21
.
G
round
s sc
r
een of
lead
from N
o.
1
cy
l
i
nd
e
r
detector
(
416)
(7/
26
).
23
.
Receives
signals from speed
/
p
osi
tion
pick
-
up
(
413
) (7/25)
.
2
4
.
Grounds
sc
re
en of
lead
fr
om
knock sensor
II
(
RH
) (2
1
8)
(
7
/
2
4
).
25
.
Re
ceives
signal from kno
c
k
sensor
I
I
(
RH
) (2
18
) (7/
24
).
Power stage connections
1.
Controls current
i
n
i
gnition
coil (
4
)
(
21
/
1) primary
w
in
d
i
ng
.
2
.
Grounds power stage
(
41
9
)
(
4115
).
3
.
Grounds screen
of
l
ead from
co
ntrol un
i
t
(
2601
{
41101 termina
l
16
.
4
.
R
eceives supply
fr
om
battery
(1)
(
1
/
1)
across
i
gnition
s
wit
ch (21
5
.
Re
ceives
igni
t
ion
pu
lses
from
control un
i
t
(
260
)
(4110
)
.
57
