Page 91
142
Direction indicators, hazard warning lights, US, CA, JP
Direction indicators, hazard warning lights, US,
CA, JP
M87 M88
*X XK +X
37 A fava
GR/RD tS abt ROU
j (I: 122A
168 S¥ 0 75 as “494 GV 095
WBA S¥ 0.98 aRevt 16 ee a we SY 0%
¥ La os ie ri cae
118 ‘ tse rtes28 ! [> 41528 18
7 G im P [J | 7 x 7
Ravi os A it ;
5 GLAD 1B on
jA RO 10 yi,
7 ms OY se
OL/VT 18 GR/RO ays Sv ons AD/¥T 18
3
. ’
f ] 74 10
5 ne 690
tf etsszc b 3:
“ : ats
TIA
ALy/vT a 3
69 r :
‘ i ;
ev ass i ey Ye aha Tks
58 3 J; ht de =
6 arvi is
7 —— ApAvt te
GRAD O75 227 GR OT
76
a/v Ww RLY
7) BL¥T 10 to ROT aa
' A
"
¥ 58
2 6 BL 38 RNSYT 16 28
1670 $V 15 1BIE SV Le
3-D, 5-D 779
rt
6 BLT 19 | bl 8
pe 1 AD/YT O75
7 Sv i Ya
@
9
26
Saab 900
Page 92
i. Aa
Direction indicators, hazard warning lights, US, CA, JP 143
Operation
Direction indicators
This section covers cars for the U.S.A., Canadian and
Japanese markets only.
The supply is taken from fuse 7 to hazard warning
light switch 25 via 29-pole red connector 152B. It is
then taken through this switch (in the unactuated
position) to flasher relay 23.
When direction indicator stalk switch 24 is moved
from the neutral position, current pulses are supplied
from flasher relay 23 to left-hand direction indicator
lamps 27 or right-hand direction indicator lamps 28
(terminal Lor R), via connector 58, and pin 11 (left) or
pin 10 (right). The front lamps are also supplied via
29-pole black connector 152C.
in addition, the two direction indicator warning
lamps, 47H (left) and 471 (right) are connected in
parallel with the direction indicator lamps for the
relevant side of the car.
The front light clusters of cars for these markets are
also equipped with corner lights 118, which light up
with a steady white light when the corresponding
direction indicator flashes. The corner lights are is
supplied directly from fuse 20 (not through the
flasher relay). Fuse 20 is live when the ignition switch
is in the parked or drive position.
The respective lamp 118 is supplied from terminal 3
(left-hand) or 2 (right-hand) of direction indicator
stalk switch 24, via 29-pole black connector 152C.
Side direction indicators 89 and 90 are located on
the left-hand and right-hand front wings respective-
ly. The lamps are supplied in parallel with the direc-
tion indicator lamps in the front light clusters.
Hazard warning lights
The supply is taken from fuse 27 to hazard warning
light switch 25 via 29-pole red connector 152B.
When this switch is depressed, the current continues
to flasher relay 23 via terminal 2.
From the flasher relay, the current pulses return to
switch 25. Since the switch is closed, the current
pulses continue to terminals 8 (left-hand) and 7
(right-hand). Current pulses are obtained only when
the flasher relay is energised.
Front and rear left-hand direction indicator lamps 27
are then supplied with current pulses via terminal L
on direction indicator stalk switch 24, across pin 11
of connector 58.
Lamps 28 on the right-hand side of the car are sup-
plied in the same way from pin 7 of the hazard warn-
ing light switch, across pin 10 of connector 58.
The two direction indicator warning lamps, 47H
(left-hand) and 471 (right-hand) will also flash. Since
switch 25 is closed, the lamp in the switch will also
flash,
Fault-tracing hints
Direction Indicators
The direction indicators are operative when the igni-
tion switch is in the drive position.
14. Check fuse 7 and check that the supply to it is
live.
2. Check that terminals 1 and 2 of hazard warning
light switch 25 are live.
3. Check that terminals 49 and 49A of flasher relay
23 are live.
4. Check that terminal 54 of direction indicator
stalk switch 24 is live.
5. Operate the direction indicator stalk switch.
Check the bulbs and check that the supply to
them is live.
6. Check the relevant cable harness and earth con-
nections.
Hazard warning lights
The supply to the hazard warning lights is always live.
14. Check fuse 27 and check that the supply to it is
live.
2. Check that the supply to hazard warning light
“Switch 25 is live.
3. Press the switch and check that terminal 2 is
live.
4. Check that terminals 49 and 49A of flasher relay
23 are live.
5. Check the bulbs and check that the supply to
them is live,
6. Check the connectors, cable harnesses and
earth connections.
To check the corner lights
Activate this system by turning the ignition switch to
the drive position.
4. Check fuse 20 and check that the supply to it is
live.
2. Check that terminal 1 of switch 24 is live.
3. Operate the direction indicator stalk switch.
Check the bulbs and check that the supply to
them is live.
4, Check the relevant cable harness and earth con-
nections.
Saab 900
Page 93
144 _ Direction indicators, hazard warning lights, US, CA, JP
Locations of components
3 Earthing point in the facia
7 Earthing point, radiator cross-member
9 _Earthing point in the luggage compartment
22A Fuse holder
in the electrical distribution box, in the en-
gine compartment, on the left-hand wheel
housing
23 Flasher relay
under the facia on the left-hand side, be-
hind the knee shield
24 Direction indicator stalk switch
on the left-hand side of the steering column
25 Hazard warning light switch
on the right-hand side of the facia
27 Direction indicator lamps, left-hand
in the front and rear light clusters on the
left-hand side of the car
i 28 Direction indicator lamps, right-hand
in the front and rear light clusters on the
right-hand side of the car
47H Left-hand direction indicator warning lamp
in the combined instrument in the facia
47| Right-hand direction indicator warning lamp
~ in the combined instrument in the facia
58 12-pole connector
on the angle bracket, under the facia on the
left-hand side (behind the knee shield)
89 Side direction indicator, left-hand
on the left-hand front wing
90 Side direction indicator, right-hand
on the right-hand front wing
93 Earthing point, left-hand wheel housing
member
118 Corner lights
in the front light clusters
152B 29-pole red connector
152C 29-pole black connector
in the electrical distribution box in the en-
gine compartment, on the left-hand wheel
housing. The connectors are accessible
from the interior of the car.
158 Negative distribution terminal
in the electrical distribution box in the en-
gine compartment, on the left-hand wheel
housing
Page 94
er
artment
the en-
1 wheel
Je, be-
‘olumn
on the
dn the
lamp
Va
‘lamp
ja
inthe
Jsing
} en-
heel
sible
en-
heel
Direction indicators, hazard warning lights, US, CA, JP 145
Components
i pa
23 .
Mi a
25 F
i
27 (28) :
Page 95
dl 150 Lighting for controls, US, CA, JP
j Lighting for controls, US, CA, JP
448 GN 0.75
59
IBR/VT 0.75
58 BR/VT 0.75
479 BR/VT 0.75
S9C_ BR/VT 0.75
Deel oa
sea
Zz
oe)
| |10
ee ee 5
312A 480
SV 0.75 SV 0.75
116C BR/VT 0.75
61 2148 BR/VT 0.75
IBR/VT 0.5 at -
SV 0.5 BR/VT 0.75
61A GN 0.5 S "
*
* eed an
143 169 (idk 10 9/5/8198
le} Ts) (2) (2)
3} 267
4 4094 SV 0.75 12
i 409 of of Flo
at SV 0.75 py i fe
>>
aq i al al al a
i@ - -| 9]
ay 2] 3) 5] 3)
Bl, 3188 SV 0.75 \
3
1206
i BR/VT 0.75
i ; 7
“TNE 12 158
206
BR/VT 0.75
a 467 BR/VT 0.75 467F BR/VT 0.75
i V 4670 BR/VT 0.75
i 467€ BR/VT 0.75
Hh. 593 4676
H, 60 GN 0.75 BR/VT 0.75 60
| GN 0.75
"A om |
"
: i &)9 | }181 [191A
q ihe ipa
445
ISV/RO 1.5
77 57
1 592
f SV 2.5
j
Saab 900
Page 96
_<_—
-S
Lighting for controls, US, CA, JP 151
Operation
The diagram shows the supply to the switches, etc.
which have built-in lamps.
The supply to rheostats 16 and 17 is live when the
ignition switch is in the drive position. The supply is
taken from fuse 10 via 29-pole red connector 152B.
Rheostat 16
The brightness of instrument lighting 18 can be step-
lessly adjusted by means of rheostat 16 in combined
instrument 47.
Rheostat 17
In addition, the following instrument lighting can be
controlled by means of rheostat 17:
Switches and lighting on the centre console
91 Gear indicating light (cars with automatic
transmission)
162 Switch for driver’s door electric window
regulator
163 Switch for co-driver’s door electric window
regulator
181 Switch for the electrically operated sunroof
189 Switch for the rear-door electric window
regulators
190 Switch for left-hand rear electric window-
regulator
190A Switch for left-hand rear electric window
regulator
191 Switch for right-hand rear electric window
regulator
191A Switch for right-hand rear electric window
regulator
Switches and lighting on the facia
10 Light switch
25 Hazard warning light switch
88 Switch for extra fog lamps
116 Switch for the electrically heated rear win-
dow
143 Recirculation switch, AC
148 Ashtray illumination
oHays| Lighting for the cigarette lighter
154 Lighting for the heater controls
169 Switch, AC
252 Driver's seat heating rheostat
Fault-tracing hints
The supply to the lighting for the controls is live when
the light switch is in position 1.
1. Check fuse 10 and check that the supply to it is
live.
2. Check that the input and output of rheostat 17
are live.
3. Check the bulbs and check that the supply to
them is live.
4. Check the connectors, cable harnesses and
earth connections.
Saab 900
Page 97
152 —_ Lighting for controls, US, CA, JP
Locations of components 148
3 Earthing point in the facia
10 —_Light switch sere
on the left-hand side of the faci
de of the facia 152C
16 Instrument lighting rheostat
in the combined instrument
Lie Extra rheostat for the lighting of switches
and controls
| on the left-hand side of the facia 153
18 Combined instrument lighting
in the combined instrument on the facia 154
22A Fuse holder
| | _ in the electrical distribution box, in the en- 162
; gine compartment, on the left-hand wheel
housing
25 Hazard warning light switch
on the right-hand side of the facia 163
47 Combined instrument
on the facia
48 Cigarette lighter
on the facia 169
oF 3-pole connector
one at the left-hand B pillar, behind the trim 181
one at the right-hand B pillar, behind the
trim es
one one under the driver's seat 189
58 12-pole connector
on the angle bracket, under the facia, to the
left of the steering column (behind the knee
shield) 190
59 2-pole connector
one on the facia, behind the cigarette lighter
60 Single-pole connector
one in each rear door 190A
one between the front seats, under the front
section of the centre console
88 Switch for extra fog lamps 191
on the facia
91 Gear indicating light
between the front seats, at the gear selector
191A
98 10-pole connector (for radio 267)
one in the facia, in the radio contact box
one to the left of the steering column, under
the facia (behind the knee shield) 204
116 Switch for the electrically heated rear win-
dow
on the facia
Tey, Earthing point
at the handbrake (1987)
between the ignition switch and the hand-
brake (1988)
143 Recirculation switch, AC
on the facia
Ashtray illumination
on the facia, in the ashtray
29-pole white connector
29-pole red connector
29-pole black connector
in the electrical distribution box in the en-
gine compartment, on the left-hand wheel
housing. The connectors are accessible
from the interior of the car.
Lighting for the cigarette lighter
on the facia, at the cigarette lighter
Lighting for heater controls
on the facia, at the respective heater control
Switch for driver+s door electric window
regulator
between the front seats, on the centre con-
sole
Switch for co-driver+s door electric window
regulator
between the front seats, on the centre con-
sole
Switch, AC
on the facia
Switch for the electrically operated sunroof
between the front seats, at the front of the
centre console
Switch for the rear-door electric window
regulators
between the front seats, on the centre con-
sole
Switch for left-hand rear electric window
regulator
between the front seats, on the centre con-
sole
Switch for left-hand rear electric window
regulator
in the left-hand rear door
Switch for right-hand rear electric window
regulator
between the front seats, on the centre con-
sole
Switch for right-hand rear electric window
regulator
in the right-hand rear door
Driver's seat heating rheostat
on the facia
Saab 900
Page 98
he en-
wheel
sssible
ontrol
indow
> con-
ndow
con-
roof
f the
dow
0n-
dow
‘on-
low
Ow
dn-
OW
Lighting for controls, US, CA, JP 153
Components
17 25
88 116 143 154
OD
162
163
189
190
169 181 ot
Saab 900
Page 99
154 Interior lighting
Interior lighting
a
|
SE
GR 1.5
28 |
Jt 22A
162
F GL 0.5
O
LI
164
BL 0.5
)
ms 167 168 g2i8 L175
:
GL 0.5
US, CA, 150 1408
JP GL 0.75 VT 0.75
BR/SV 0.75) SV 0.75
117 15 657
VT 0.75 GR/RD 0.5
82
he rf. we. 5 1670 BR/SV_0.75
1 24 BR/SV 0.7 : Ve
eres 2
ae a
US, CA, JP L 2S
\ Cyis
31 30
170 171 sf Se
i SV_0.75 | SV 0.75 656 ,
SV0.5 8, TBA, 716, T16A
| 117 18\:US, CA
D4 116A: US, CA, JP, AU
58
vl 171_ SV 0.75
is
12 ,152A
170
SV 0.75
54 54
167C_BR/SV_0.75
167E_ BR/SV_0.75
54 54
Saab 900
Page 100
Interior lighting 155
—_—-
Operation
There are two versions of the interior lighting system
— one with a time delay and one without. Cars with
delayed extinguishing of the interior lighting are
equipped with an extra relay 151 (see the special
section below).
The lights are supplied across fuse 28 and 29-pole
white connector 152A, regardless of the position of
the ignition switch.
The interior lights can be switched on and off by
means of interior lighting switch 53, at the ignition
switch.
When switch 53 is in position 2 (forward position),
centre roof lamp 50, front roof lamp 51 and ignition
switch lamp 52 are always switched on.
In position 1 (rear position), the interior lighting will
be switched on if one of the door switches (54) is
closed, i.e. if a door is opened. In position O (centre
position), the interior lights are always off.
On cars for the U.S.A., Canadian and Japanese mar-
kets, door switch 54 for the left-hand front door is
supplied via seat belt/ignition switch warning relay
82.
Time delay
Cars with the interior lighting delay are equipped with
time-delay relay 151, which is supplied across fuse
12 when the ignition switch is in the drive position,
and with a constant supply from distribution terminal
+30, regardless of the position of the ignition
switch.
When the interior lighting is switched on, by a door
being opened or a switch being operated, terminal T
is earthed and relay 151 is energised.
When the circuit is subsequently broken, by the door
being closed or the switch being operated, the inte-
rior lighting will remain switched on, since the timing
circuit of the relay will Keep the earth circuit closed
across terminals T and 31.
The time delay is around 15 seconds, but will be
interrupted if the ignition switch is turned to the drive
position. A positive voltage (from +54) is then sup-
plied to terminal 15 of the relay. Both terminals — 15
and 30 — then receive a positive supply. The relay is
thus de-energised and the earth circuit across termi-
nals T and 31 is broken.
Fault-tracing hints
1. Check fuse 28 and check that the supply to it is
live.
2. Check the bulbs for the interior lighting and
check that the supply to them is live.
Check the switches and door switches.
4. Check the connectors, cable harnesses and
earth connections.
Time delay
On cars with time delay, check also the following
points:
1. Turn the ignition switch to the drive position.
Check fuse 12 and check that the supply to it is
live.
2. Check that terminals 15 and 30 of relay 151 are
live.
Saab 900