Page 331
............
Wiring Diagrams, Fuses and Relays
371-83
Ignition System
Operation
The ignition system creates and regulates the high voltage
pulses that fire the spark plugs. Two versions of a Hall-effect
electronic ignition system are used on the cars covered by this
manual. Complete ignition system repair information is covered under 340 Ignition System.
Ignition System Applications
• Turbo models - basic Hall ignition
• Non-turbo models - EZK ignition (with knock sensor)
158
159
176
178
200
203
320
ground (-) distribution in main fuse/relay panel
+15 distribution in main fuse/relay panel
ElK control unit on inner left fender
ElK knock sensor on engine block, below intake manifold
LH control unit behind passenger side A pillar trim
throttle angle transmitter on throttle housing
ignition coil with integrated amplifier on inner right fender, near battery
(1988-1989)
345 ElK crankshaft sensor behind crank pUlley (1989 and later)
Connector Locations
1985-1990
57
59
60
67
3-pin connector in engine compartment right side
2-pin connector in engine compartment right side
1-pin connector near main fuse/relay panel
6-pin connector in engine compartment right side
WARNING
1991 and later
Any time work is being done on the ignition system it should
first be disabled as described in 340 Ignition System. The ignition system operates at lethal voltages. People with pacemakers or weak hearts should not expose themselves to the
ignition system. Extra caution must be taken when working on
or servicing the engine while it is running or if the key is on.
H1-18 1-pin connector under center console
H2-53 2-pin connector under the rear seat
H3-3 3-pin connector to left of starter motor
H3-5 3-pin connector in engine compartment, left of air intake
H4-1 4-pin connector at left wheel housing
H4-1 4-pin connector behind instrument panel right side behind trim
H6-1 6-pin connector in engine compartment right wheel housing
H6-2 6-pin connector in engine compartment right wheel housing
H29-1 29-pin bulkhead connector behind main fuse/relay panel (1991-19911/2)
H29-2 29-pin bulkhead connector behind main fuse/relay panel (1991-19911/2)
H33-1 33-pin bulkhead connector behind main fuse/relay panel
(1991 1/2 and later)
H33-2 33-pin bulkhead connector behind main fuse/relay panel
(1991 1/2 and later)
Fault Tracing
Read and understand the warnings and cautions given in
300 Electrical-General before working on the ignition system. See 340 Ignition System for fault tracing.
Ground Locations
Component Locations
1985-1990
5
6
47P
73
110
145
146
ignition coil on top of radiator
distributor at end of cylinder head
Check Engine light
TSI socket in main fuse/relay panel
Tachometer in instrument cluster
ElK test connector next to main fuse/relay panel
Ignition Control Unit (non-ElK ignition)
Ignition amplifier (ElK ignition)(in front of left wheel housing)
147 Ignition pulse amplifier main fuse/relay panel, position D (1986-1987)
7 ground point at radiator cross member
158 ground (-) distribution in main fuse/relay panel
211 ground point at gearbox
1991 and later
G1
G6
G7
G8
G12
G25
ground point at radiator cross member
ground distribution at main fuse/relay panel
ground point at engine lifting lug
ground point behind instrument panel
ground point at left wheel housing
ground point at gearbox
~
~
5
176
6
47P
~I ft~~\ ~
178
L...2-'O_3
145
32O
--' L...__
146
---J
L. .34:. . .;,.; .5
---J
Page 332
371-84
Wiring Diagrams, Fuses and Relays
Ignition System-turbo
1985
+15
I
123K
GN/VT 10
1230
GN/VT 10
123C
GN/VT 075
123H
GN/VT 15
123G
GN/VT 075
22
204 GL/VT 075
146
14
193
5V 075
393
5V 15
3
284
BL 075
60
1230 GN/VT 10
284A
BL 075
Page 333
Wiring Diagrams, Fuses and Relays
371-85
Ignition System-turbo
1986-1987
+15
+54
I
!
11C
VT 15
123K
GN/VT 10
mc
1230
123H
GN/VT 10
GN/VT 15
GN/VT 075
71
GL/RO 10
1528
760
GN/VT 0.75
5
146
147
15
759 GL 075
TO-I
10
14
..n..
31
60
393
SV 15
193
SV 075
I
I
rh 158
1230
GN/VT 10
284A BL 0.75
BL 25
3
Page 334
Wiring Diagrams, Fuses and Relays
371-86
Ignition ystem-turbo
1988 and later
+30
7
GY 4.0
JO
20
\230
GN/WH 1.0
\238
GN/WH 2.5
MBB-MB9
+54
I
I
M90 and later
ffi22A'
--.I
'--+-.....
12JH
GN/WH 1.5
71
YE/RO \.0
5
152B
H29-2
1
182 8U 0.5
26.
146
au \.0
[5
H33-2
M91 and later
J9J
8K \.5
I.
93
G12
\2JO GN WH \.0
c-I~6.a
J- ~~1- J
G25
7
G1
58 GY 4.0
QI5H 292
A
204 YE WH 0.5 El204A YE/WH 0.5
Page 335
Wiring Diagrams, Fuses and Relays
371-87
EZK Ignition System-nan-turbo
1986-1987
.15
11J
G,'/IVT lS
-54
1230
uN/VT 10
'\0
l1lH
GNIVI 15
1\
'\1
(jN/VI 10
1 mellS
GN/VT 1.0
lBJ(
'nc
GN/V, 10
VI I')
146
1\
'"
50V I.S
GlIRD Ie
178
./
~
:J;
;
~
13
"
14
759 Gl 075
"
"
17
4
176
14
•
1526
~
:J;
1
"
2et.(
"
201,
!'Il 075 GL/VI 07S
14
50v 0.75
-
60
19'
50V 07S
;:,
I
~
I
rh 158
57
r- "
200
I
L_ 1
')67 BL/RD 07')
S1,,9;. Vl!VJ 075
')665'10750
SliA CiR 075
203
'JH CiR 015
'iSS SV/VT 075
201
1230
GNIVT 10
75
SBGRI,O
59
Page 336
371-88
Wiring Diagrams, Fuses and Relays
EZK Ignition System-nan-turbo
1988
+30
I
I
152A
--4> 29
' -_ _---'-7-"C"-R....''''.5'-
7 GR 2.5
20
,
O
'-"2""-'C"'N=VT'-"1."'5
I
I
I11E
123('
GN/VT \.5
GN/V! l.0
VT
12J GN VT 1.5
+54
+54
12JO
-j>28
I11C
VT 2.5
2.5
7
I22A
17B
320
116>' 655. CL 0.75
'>
z
""'--"-'-"-l'iD'i1t-<
'>
"
59 e~9 VT 075
'-1<:~!!-'''"-'''--'='-'
VL VT 0.75
~
~
~
}
549A
~
201
13
'2
1528
28<
\7
176
~
204 Gl
Bl 0.5
~
~
"
ffi i3
Ii?
~
~
203
~
, , , 57 (116)
67 (116)')
6 ••
SV 075
I
201
O
1
I
1
1
I
,---"S"-67,--,,81=R,,0-,0,,7,,,S,-_ _.J 24
sv 075
$'1 075
201
200
--"';r;-;- ,
L..c5o,'<.<',,'-"CR"--'0"-.7"'S'-_ _
6'.'}
6 ••
532
co 0.75
1
--15
25
5
I1
I
lJ:1.~.. I~~
",S6",.6,,-'",5V,--,,0,,-7S,,-
566
Sv 075
201
1230 GN VT 1.0
2841\
Bl 0.5
122 GL 2.5
Bl 25.0
211
4
'8'
Sv 0,75
15B
280
CR 1.5
Page 337
Wiring Diagrams, Fuses and Relays
371-89
EZK Ignition System-nan-turbo
1989
+30
I
I
152A
-i> 29 <1--"-=='------------,
,,7...;C"'R'--"'2.=-'
20
-<>-
r-
''''2=-J-''CN=-V'-'T--'''1.5''--t28~-'-''-''''--'=.'-'...=--<
+54
+54
I
I
1230
1239
GN/VT 1.0
CN/VT 1.5
h'E
VT
hIe
VT
2.~
2.~
7
122A
1528
93
ll.li..O. 655' CL 0.75
""'-="-@J::Q:I
tW
11
}
655A
549A
CL 0.75 I VL/VT 0.75
57
204
'0
15
'6
284C
BL O.5c
284
17
176
24
4
J
Bl 0.5
1528
60
204 GL
20
on
~
0
~
z
C>
'"
0
~
649....
sv 1.5
~
0
on
~
0
0
0
"
N
649
;::
203
"ill
sv 1.5
57
200
.........,='-=-="'-__~r ;- ;- ,
l---"'''--'='''-'=_ _---1 24 25 I
I
I
I
I
fil
~
G
JL
0
"
345
649.}
649
SV 0.75
5V 075
201
II
--1 5
5
II
I
L: __
C~----'56=6"-.-"5"-V-,0,,,7,,,-5
566
SV 0.75
201
1230 CN
1 1.0
284A
BL O.S
122 GL 2.5
BL 25.0
73
4
211
281
280
SV 0.75
GR 1.5
158
~
58 GR 4.0
OI50.}42
C
r---'-''''-'=.'-'-=-'
Page 338
371-90
Wiring Diagrams, Fuses and Relays
EZK Ignition System-non-turbo
1990
7 GR 2.5
20
--<>
r
1230
GN/VT l.0
146
'-"2o=.J--'c"'NL v"--T'--"'."-s_--t 28 4---'1...
2J""E~C"'N=V:LT_""'.S'___<
1238
GN/Vr 1.S
+54
+54
I
I
hiE
Inc
VT 2.5
VT 2.5
)----""'--'="-'--""-'
648 sv 1.5
651 BL 1.5
93
122A
J
5
(22A
7
1528
123A
7\ Cl RD 1.0
CN/vr 2.5
93
178
tim...," }
o
549
123 Vl
VT 0.75
N
<
655A
549A
116 GL 0.75
VL
'"
4
vr 0.75
357
204
,--------1----110
16
1J
4
'"
'"
<d
>
0
"'
V>
Ii
0
n
~
N
;;:
0
SV 1.S
<X
649
SV 1.5
357
;;;
l?
Ii
n..
'"
<d
0
oc
<
284
17 Bl 0.5
284C
BL 0.5
204 GL VT 0.5
ill
<
'"'"
~
d
203
<X
"
~
(116)
532
GR O. 7~
Q!2..U
,-,5""3",2,,A-"C""--,O,,,.7"'5'---_ _~r
567 8L "0 0.75
l?
200
;- ;- ,
25
I
345·
1528
60
20
649A
'"
<d
15 3
176
,-------j-----I24
<d
12
649
sv 0.75
649A}
sv 075
201
O
I1
------I 5
~ 1_
--'56=6Ao....eS"--V-,,0--,7."-5
I
I
(
((
5
(
2..I'j
566
Sv 0.75
201
1230 GN vr 1.0
284A
BlO,5
122 CL 2.5
BL 25.0
73
4
211
280
28'
GR 1.5
SV 0.75
158
1875891
58 GR 4.0
015H J..42
B
Page 339
Wiring Diagrams, Fuses and Relays
EZK Ignition System-nan-turbo
1991 and later
1238
CN/WH 2.5
1238
CN/WH 2.5
146
+54
+54
I
I
II1E
Il1c
WH 2.5
WH 2.5
648 BK 1.5
651 BU 1.5
H29-2
G12
71 Y[ RO 1.0
5
655A
15
Y[
0.75
3
203
~~2
182
555
8K/WH 0.75
G7
200
L-""-""--"'-'-'~'--_ _~ 3 - ; -
...,
25 25
J1..
345
566A BK 0.75
5
5
N
I ~ ;: ~
I
I
I
I
I
I
I
~.l.l....J
1230 CN WH 1.0
BU 25.0
BU 16.0
G25
G1
7 GY 4.0
H47 e~9 WI; 075
4
.
371-91
Page 340
371-92
Wiring Diagrams, Fuses and Relays
Interior Lighting
Operation
The interior lighting is controlled by the door switches on the
door jambs. The door switches can be overridden by the center console switch or the combination roof light/switch (except
convertible). A time delay relay is located under the back seat.
On hatchback models, a cargo area light is controlled by a
switch located below the lock striker plate.
The roof light bulbs or switches can be removed after removing the screws (where applicable) and carefully prying
away the lens. The ignition switch light can be pulled straight
down out of its holder after carefully peeling up the shift lever
boot and reaching under the console. See 432 Manual Transmission Controls for information on removing the center
console.
Fault Tracing
1. Check the fuse. Check for battery voltage at the lamp
assembly at all times.
2. Check for ground at the lamp assembly whenever a
door is opened or when the center console switch is
toggled.
3. Check door switches for a good ground through the
chassis screw or switch assembly. Check the wiring to
each door switch.
82
151
175
225
289
316
401
seat be~ warning relay unde r the rear seat
time delay relay under the rear seat
central locking control unit behind instrument panel rtght side
reading lamp at rear seat
burgiar alarm control unit under the rear seat
diode for the burglar alarm
auxiliary fuse/relay panel under rear seat
Connector Locations
1985-1990
57
58
59
59
59
60
98
123
152A
1528
3-pin connector under center console
12'pin connector behind instrument panel, left of steering column
2-pin connector in luggage compartment. left wheel housing
2-pin connector under roof lining at rear view mirror
2-pin connector at reading lamps (convertible)
1-pin connector under center console
10-pin connector to left of steering column
4-pin connector at hatchback, left side
29-pin bUlkhead connector at main fuse/relay panel
29-pin bulkhead connector at main fuse/relay panel
1991 and later
H2-21 2-pin connector in luggage compartment, left wheel housing
H2-35 2-pin connector above roof lining at the rear view mirror
H2-46 2-pin connector at left reading lamp, convertible
H2-47 2-pin connector at rtght reading lamp, convertible
H12·1 12-pin connector behind instrument panel, left of steering column
H29-1 29-pin bulkhead connector behind main fuse/relay panel (1991-1991 1/2)
H33-1 33-pin bulkhead connector behind main fuseirelay panel
(1991 1/2 and later)
Ground Locations
Component Locations
22
50
51
52
53
54
1985-1990
main fuse/relay panel
roof lamp/switch in the headliner
front roof lamp at rear view mirror
ignition switch light next to ignition sw~ch, center console
interior light sw~ch in center console
door switches on the door jamb
G4 ground point between ignition switch and handbrake
G5 ground point under the rear seat
----
I~I
~
:
~ _."i
52
51
50
1991 and later
-~
,,;:. ... -,'-,-;:/
I','
1/
',1
65 ground point under the handbrake
117 ground point under the handbrake
_._---I ~=-~-----~~.
~l & r
II
I
53
,
\"
".
~
'\,
~
~
~
54
(1991-Qn)
~
~
151
(1985-1990)
82
175
225
289
~
,
401
.
401A
151