Page 321
Wiring Diagrams, Fuses and Relays
371-73
Headlights
Operation
Connector Locations
The headlights receive power from the headlight switch
whenever the key is in the run position. All power to the headlights must pass through the headlight relay and four separate
fuses. Each beam (i.e. left low beam) is protected by a separate fuse. Two types of headlights are used on the cars covered by this manual. On 1985 and 1986 models, a sealed
beam is used. On 1987 and later cars, a replaceable headlight
bulb is used.
1985-1990
58
60
152A
152B
1991 and later
H2-7
H12-1
H29-2
H33-3
Fault tracing
2-pin connector at the light switch
12-pin connector in left side instrument panel
29-pin red bulkhead connector (1991-1991 1/2)
33-pin gray bulkhead connector (1991 and later)
0'
Ground Locations
Always begin by checking fuses and connectors. Check
and tighten all grounds. See 351 Lighting for repair information, including changing bulbs.
1985-1990
3 ground point behind instrument panel
7 ground point at radiator cross member
Component Location
8
10
11
12
47G
75
158
215
12-pin connector behind instrument panel 10 left of steering column
1-pin connector behind instrument panel to left 01 steering column
29-pin bulkhead connector
29-pin bulkhead connector
1991 and later
lighting relay in main fuse/relay panel
lighting switch in instrumenf panel
headlight high beam
headlight low beam
headlight high beam warning light in instrument cluster
tenninal distribution in right bulkhead near exhaust man~old
negative distribution tenninal in main fuse/relay panel
dip swnch
G1
G6
G8
G25
ground point at radiator cross member
ground distribution in main fuse/relay panel
ground point behind instrument panel
ground point on gearbox
8
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215
Page 322
371-74
Wiring Diagrams, Fuses and Relays
Headlights
12
11 12
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Page 323
Wiring Diagrams, Fuses and Relays
371-75
Heated Rear Window and Cigarette Lighter
Heated Rear Window Operation
Component Locations
The heated rear window element (115) is activated by the
switch (116) on the instrument panel. A rear window heater
warning light (47J) will light up in the instrument cluster. The
circuit has a time delay relay (113) that will turn off the supply
to the heating element after about 10 minutes. Convertible
models have a mercury switch (279) that deactivates the circuit if the convertible top is down.
Heated Rear Window Fault Tracing
1. Check the fuse.
2. Check for voltage at the heating element. Check the
continuity of the heating element to find breaks in the
rear window grid.
3. Check for voltage at time delay relay (113) terminal 30
and terminal 87.
Cigarette Lighter Operation
The cigarette lighter works after it is pushed in only with the
key in the run position.
Cigarette Lighter Fault Tracing
1. Check the fuse.
2. Remove the cigarette lighter element and carefully
check for voltage between the center contact and
ground with the key on.
3. Inspect the heating element for breaks. Check the continuity of the heating element.
20
22A
47
47J
48
113
115
116
158
159
207
279
401
ignition switch
main fuse/relay panel at left wheel housing
instrument cluster
rear window heater warning lamp
cigarette lighter
time delay relay for heated rear window under rear seat, auxiliary
fuse/relay panel
rear window heater element
rear window heater switch
negative distribution in main fuse/relay panel
+15 distribution in main fuse/relay panel
heated rear view mirrors on front doors
mercury switch for convertible heated rear window at left side top
mounting
auxiliary fuse/relay panel under rear seat
Connector Locations
1985-1990
57
59
152A
1528
3-pin connector in luggage compartment, left air outlet
2-pin connector in luggage compartment, left air outlet
29-pin bulkhead connector at main fuse/relay panel
29-pin bulkhead connector at main fuse/relay panel
1991 and later
H2-10 2-pin connector behind cigarette lighter
H3-13 3-pin connector in luggage compartment, left air outlet
H10-1 10-pin connector behind instrument panel, left of steering column
H29-2 29-pin bulkhead connector behind main fuse/relay panel (1991-1991 1/2)
H33-2 33-pin bulkhead connector behind main fuse/relay panel
(1991 112 and later)
Ground Locations
1985-1990
3 ground point behind instrument panel
1991 and later
G3
G5
G8
G19
G26
ground point in luggage compartment
ground point under the rear seat
ground point behind instrument panel
ground point at hatchback
ground point at right C pillar on sedans
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22A
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116
I
I
207
I
401,113
401A
m
Page 324
371-76
Wiring Diagrams, Fuses and Relays
Heated Rear Window and Cigarette Lighter
1987 on (Convertible)
1985 on (ex. Convertible)
+15
+30
:121K
GN/VT 10
+'5
'SF
+30
+30
:1lJK
GN/VT 10
GR 15
+30
'SF
GR 15
7
GY 40
29122A (M87-M90)
401A (M91 and later)
7
3
GY 4.0
210
RD 25
210
RD 25
30
Q
30
20
15
~HJ3-2 I
219
GN/VT 05
219
GN/VT 0 \
219
GN/WH 05
0.5
59
BRlVT075
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1528 I
H10-1'
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147J
2J
L
2J
10
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147J
17'
9'
113
113
207 (US,CAI
207IUS,CAI
MBB and later
207(US.CAI
207lUS,CA)
3
G8
3
G8
21'
G~ 2 S
279
_ _ fL ___
211
G'" 25
115
115
2-0,4-0
115
3-0/5-0
Page 325
Wiring Diagrams, Fuses and Relays
371-77
Heated Seats
Operation
NOTE
The front heated seats are thermostatically controlled.
Some models have a rheostat (252) on the instrument panel
fortemperature control. The heating element is located under
the bottom seat cover and the seat back. A thermostatic button under the bottom cover turns the heating element on and
off. The passenger seat switch (121) prevents the heater from
turning on if the passenger seat is not occupied.
For information on removing the seats and seat covers, see
851 Interior Trim and Upholstery.
Fault Tracing
1. Check the fuse. On 1991 and later models, the fuse is
located in the fuse/relay panel (401) under the rear
seat.
2. Check for voltage at the seat heating pad element (64)
and check for continuity through the element.
3. Check the seat switch (121) under the passenger seat.
This switch should be closed (continuity through
switch) when a passenger is in the seat.
4. Check the thermostat button under the bottom seat
cover. The thermostat should be closed (continuity) or
open (no continuity) depending on the temperature of
the switch.
A commercial aerosol freeze spray can be sprayed on the
thermostat button to simulate cold temperatures for testing.
Always check compatibility of the spray with components and
upholstery before using.
Component Locations
22A
64
121
252
254
401
main fuse/relay panel at left wheel housing
heated seat pad with thermostat in the seat cushion and backrest
passenger seat switch for heated seats under the passenger seat
driver heated seat rheostat in instrument panel
driver seat temperature transmitter in driver seat
auxiliary fuse/relay panel under rear seat
Connector Locations
1985-1990
59
60
98
152A
152B
2-pin connector under each front seat
1-pin connector under the center console
1O-pin connector to the left of the steering column
29-pin bulkhead connector at main fuse/relay panel
29-pin bulkhead connector at main fuse/relay panel
1991 and later
H8-1
H8-2
H10-1
H10-6
8-pin connector under the passenger seat
8-pin connector under the driver seat
10-pin connector behind instrument panel, left of steering column
10-pin connector at the auxiliary fuse/relay panel under rear seat
Ground Locations
Heated seat thermostat
• switch closed
• switch open
below 54°F (12°C)
above 82°F (28°C)
1985-1990
65 ground point at the handbrake
117 ground point at the handbrake
1991 and later
G4 ground point between ignition switch and handbrake
64
64,254
Page 326
371-78
Wiring Diagrams, Fuses and Relays
Heated Front Seats without Rheostat
1985-1988
+54
11L
VT 2.5
140
GL 2.5
59
59
140 GL 1.0
140A GL to
~
64
141 SV 1.0
1416 SV 1.0
59
121
14K SV 1.0
117
Page 327
Wiring Diagrams, Fuses and Relays
371-79
Heated Front Seats with Rheostat
1987-1990
+54
I
I
llL
VT 2.5
17
59
BRjVT 0.75
479
4 BRjVT 0.75
88
SE,FI,EU,GB,ME,
FE AU M90: JP US CA Mag· IJP
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58A
BRjVT 0.5
.......-----0+--.
7
3"
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1--
a
10
6
140A
GLjVT 1.5
145
BL 0.5
141A
SV 0.5
140
GL 1.5
140A
GLjVT 1.5
145
BL 0.5
141A
SV as
142
GL 1.5
141 SV 1.0
1117
140A
GLjVT 1.0
145
BL 0.5
141
SV 1.0
141C
SV 1.0
60
142
GL 1.0
64
1418
SV 1.0
121
015H 033
A
Page 328
371-80
Wiring Diagrams, Fuses and Relays
Heated Front Seats with Rheostat
1991 and later
+54
t
6
WH 4.0
J42
16C
WH 2.5
WH 4.0(CAB)
2 1401A
17
59
140
BN/WH 0.75
YE 2.5
JJ4
J44
479
BN/WH 0.5
7
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H8-1
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64
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Page 329
Wiring Diagrams, Fuses and Relays
371-81
Horns
Operation
Component Locations
20
21
22A
40A
41
68
75
158
289
336
352
The horns can be sounded with the key in the run position.
The buttons on the steering pad (41) complete the circuit to
ground through the slip ring assembly (352/336) in the steering wheel and the horn relay (68).
WARNING
Some cars covered by this manual are equipped with an explosive SRS airbag device. Do not attempt to service the wiring in the steering wheel or steering column assembly. The
airbag may accidentally ignite, causing personal injury. See
an authorized Saab dealer for any repairs necessary to the
SRS wiring or components.
ignition switch in center console
ignition switch relay in main fuse/relay panel
main fuselrelay panel
homs located on right side behind headlight
horn switch in steering wheel pad
horn relay in main fuse/relay panei
distribution block at right wheel housing
negative distribulion In main fuse/relay panel
burglar alarm control unit (convertible) under rear seat
slip ring contact behind steering wheel (cars with SRS Airbag)
slip ring switch behind steering wheel
Connector Locations
1985-1990
152A 29-pin bulkhead connector behind main fuse/relay panel
1528 29-pin bulkhead connec1or behind main fuse/relay panel
For information on removing and repairing the steering
wheel see 641 Steering Column.
1991 and later
H29·1 29·pin bulkhead connector behind main fuse/relay panel (1991-1991 1/2)
H29·2 29-pin bulkhead connector behind main fuse/relay panel (1991-1991 112)
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
1. Check that the fuse is okay.
2. Remove the horn relay (68) and jumper pins 30 and 87,
the horn should sound. If not, there is a problem between the fuse and the horns.
Ground Locations
3. Check for ground at pin 85 of the horn relay when the
horn button is depressed. If ground is not present,
check the slip ring assembly.
1985-1990
4. Check for positive (+) battery voltage at pin 86 of the
horn relay when the key is in the run position. If there is
no voltage check the wiring from the ignition switch (20)
through the ignition switch relay (21).
1991 and later
7 ground point at radiator cross member
211 ground point at gearbox
G1 ground point at radiator cross member
G6 ground distribution at main fuse/relay panel
G25 ground point at gearbox
68
352
40
41
21
75
~
336
r
m
Page 330
371-82
Wiring Diagrams, Fuses and Relays
Horns
40
40
J3
117A RD 1.0
1178 RD 1.0
8K 075
120A
BK 0.75
7
G1
7
G1
120
117 RD 1.5
+30
20
5H
GY 1.5
117
RD 1.5
H33-2
30
[16]
86
68
1528
H29-2
(22B:K)
118 BK 0.75
2~
18
8K 0.75
with Airbag
without Airbag
~
336
~41
AB
352