sensor SAAB 9-5 2000 User Guide

133 Starting and driving
advantages of the system is that it
enables the engine to be run safely on
lower-grade fuel, although not lower
than AON 87.
 The maximum boost pressure is
adjusted automatically to the knocking
or pinging tendency of the engine.
Occasional, short-lived knocking when
the engine is under a heavy load is per-
fectly normal; the extent will depend on
the grade of fuel in the tank.
 Isolated instances of knocking are
more likely to occur with low-octane
fuel. This controlled form of knocking,
followed by a reduction in the boost
pressure, is a sign that the wastegate is
functioning and is perfectly safe for the
engine.
Important considerations with cata-
lytic convertersThe catalytic converter is an emission-con-
trol device incorporated in the car’s exhaust
system. It consists of a metal canister with a
honeycomb insert, the cells of which have
walls coated in a catalytic layer (mixture of
precious metals).
NOTEIf constant knocking occurs every time a
load is put on the engine, this indicates a
malfunction in the system.
Have the car checked without delay by an
authorized Saab dealer.
WARNING
If the engine is being run with the car on a
rolling road or dynamometer, to ensure
adequate cooling, air must be blown into
the engine compartment and under the
car at a rate equivalent to the ram-air
effect that would be obtained at the corre-
sponding road speed.
NOTEUse only unleaded gasoline. Leaded gas-
oline is detrimental to the catalyst and
oxygen sensor and will seriously impair
the function of the catalytic converter.
IB661
2
1
3
Oxygen-sensor-controlled
injection system 1 Engine control module
2 Oxygen sensor (lambda probe)
3 Catalytic converter
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146 Starting and drivingBrakingTo avoid the brakes becoming overheated,
(e.g. when negotiating long descents with a
drop of several hundred feet), select a low
gear to use the braking effect of the engine.
If the car has automatic transmission, move
the selector lever to position 1 or 2.
When driving fast, you can help to prolong
the life of the brakes by thinking ahead and
braking harder for short periods, rather than
braking more moderately over long
stretches. Brake pad wear indicatorsThe outboard brake pads on the front
wheels incorporate pad-wear indicators.
When the lining is down to 3 mm, the pad
will produce a screeching, squealing or
scraping noise when the brakes are applied.
New pads should be fitted without delay.
Brake pads should only be replaced by
an authorized Saab dealer. To ensure optimum brake performance,
it is recommended that you use only
Saab original brake pads.
ABS brakesABS (antilock braking system) modulates
the brake pressure to the respective
wheels. Wheel sensors detect if a wheel is
about to lock, and the control module
reduces the pressure to that wheel and then
increases it once more until the tendency is
detected again.
The brake system is equipped with an Elec-
tronic Brake-force Distribution device
(EBD), which distributes the brake pressure
between the front and rear wheels, in such
a way as to achieve optimum braking perfor-
mance irrespective of the car’s speed and
load.
The ABS system has a built-in diagnostic
function which will switch on the Anti-lock
brake warning light if a fault is detected in
the system (see page 48).
WARNING
 It is prudent to try your brakes from
time to time, especially when driving in
heavy rain, on roads with a lot of sur-
face water, or in snow or slush. In such
conditions, the brakes may take
longer than normal to take effect. To
rectify this, touch the brake pedal peri-
odically to dry the brakes out.
The same applies after the car has
been washed or when the weather is
very humid.
 The brakes are power assisted and it
should be kept in mind that the servo
unit only provides the power assis-
tance when the engine is running.
 The brake pressure required when the
engine is off,( e.g. when the car is on
tow) is roughly four times the normal
pedal force required. The pedal also
feels hard and unresponsive.
 We advise against using wheels with
open wheel covers in winter, as the
brake components are then more
exposed both to slush, road salt and
grit.
WARNING
 The additional safety afforded by the
ABS system is not designed to allow
drivers to drive faster but to make
normal driving safer.
 To stop as quickly as possible, without
loss of directional stability, whether
the road surface is dry, wet or slippery,
press the brake pedal down hard-
without letting up, declutching
simultaneously, and steer the car to
safety.
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147 Starting and driving
The ABS system will not reduce the braking
distance on loose gravel or on snow or ice
but, because the wheels cannot lock up,
some steering control is retained.
When the ABS system is working, i.e. mod-
ulation of the brake pressure is in progress,
the brake pedal will pulsate and a ticking
noise will be heard. All this is perfectly nor-
mal.
Press the pedal down hard (you cannot
press too hard) and steer the car to safety. Do not release the brake pedal before the
car has come to a halt or the danger is
past!
That is critical.
If the road is slippery, the ABS system will
operate even when only light pressure is
applied to the pedal. This means that you
can brake gently to test the condition of the
road and adapt your driving accordingly.
It is well worth practicing the use of ABS
brakes on a skid pan or other suitable facil-
ity.
Traction Control SystemHow the system works The traction control system (TCS) is
designed to prevent wheelspin. This
enables the car to achieve the best possible
grip and, hence, maximum tractive effort,
together with greater stability.
The TCS system uses information from the
ABS system’s wheel sensors to detect
when the front (driving) wheels are rotating
faster then the rear wheels. It then monitors
whether one driving wheel is rotating faster
than the other. If so, the faster wheel is
retarded until both wheels are rotating at the
same speed.
If the two front wheels are rotating at the
same speed but are turning faster than the
rear wheels, the torque from the engine is
reduced to eliminate the difference.
The process continues until all the wheels
are rotating at the same speed.
The advantages of the TCS system become
most apparent when the cohesion between
the front wheels and the road surface is so
low that one or both of the wheels would
lose their grip were the car not equipped
with the TCS, e.g.:
 When the car is pulling away or accelerat-
ing with the front wheels on different sur-
faces (e.g. one slippery and one dry). The
TCS then functions like an electronic dif-
ferential lock.
 When the car is pulling away or accelerat-
ing on a slippery road, in which case the
Braking with ABS brakes
When the system is operating, the brake
pedal will pulsate gently and the system
will make a ticking noise
IB476
IB477
Braking with ABS – evasive steering
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194 Car care and technical informationFuse panel in instrument panel
# Amp Function
A 25 Trailer lights
B 10 Automatic transmission
C 7,5 Electric door mirrors; DICE
1 15 Brake lights; shift-lock override
2 15 Reversing lights
3 10 Parking lights, left
4 30 Parking lights, right
5 7,5 DICE / TWICE
6 30 Electric windows, right
6B 5 Stop lights, trailer
7 10 Fuel injection
8 15 Trunk lighting; door lighting; SID; car phone
9 15 Audio System; diagnostic instrument
10 15 Memory function, door mirrors; heating, rear seat
11 30 Central locking; electrically adjusted passenger seat
12 7,5 Automatic transmission
13 20 Audio System, amplifier
14 30 Ignition system, engine
15 15 Preheated oxygen sensor (catalytic converter)
16 20 DICE (direction indicators)
16B – –
17 20 Engine-management system
18 7,5 Door-mirror heating
19 20 Fuel pump
20 15 ACC; interior lighting; rear fog light
21 10 Audio System; rear-view mirror with auto dimming
function
22 40 Interior fan; air pump (V6 only)
23 15 Sunroof
24 40 Rear-window heating
25 30 Electrically adjustable driver’s seat; fuel-filler flap
26 7,5 ABS brakes; ACC
27 10 Engine-management system
28 7,5 Airbag (SRS)
29 7,5 Automatic transmission
30 7,5 Starter motor
IB530
BC123456 A
14
121110987
13
6B
1516
2324
222120191817
16B
5425262728293031
3635343332
39383755525356
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238 SpecificationsFollowing adjustments can be done
by the driver:Automatic Climate Control (ACC):
To alter the preprogrammed “AUTO“ start
up mode with your own preferences you can
manually select the desired settings for:
 Temperature.
 Fan speed.
Air distribution.
See “Programming I“ on page 73 and “Pro-
gramming II“ on page 74.Saab 9-5 Audio System (see page 93):
 Maximum starting volume (when the
radio is switched on).
 Telephone volume (if the car is equipped
with a phone connected to the audio sys-
tem).
 Speed dependent volume (volume
increases or decreases with vehicle
speed).
 Loudness.Alarm system:
The glass breakage sensor can be tempo-
rarily disabled, see page 39.
Daytime Running Lights:
To disable, turn off the ignition and pull out
fuse 35, see page 194.
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244 IndexStarting in cold weather, ACC _______ 73
Starting in hot weather, ACC ________ 73
Steering wheel adjustment ________ 107
Steering, technical data ___________ 232
Stone-chip damage, repairing ______ 210
Storage compartments ___________ 113
Sun visors _____________________ 112
Sunroof _______________________ 111
Suspension ____________________ 232
Suspension, technical data ________ 232
Switches _______________________ 61
Systems, adjustment _____________ 237TTCS OFF _______________________ 51
Table of fuses __________________ 194
Tachometer _____________________ 52
Tailgate, opening _________________ 36
Tank gauge _____________________ 53
Technical data __________________ 225
Temperature control, ACC _________ 69
Temperature gauge, engine ________ 53
Temperature zones, ACC __________ 69
Textile carpeting ________________ 208
Through-load hatch ______________ 118
Tie Downs _____________________ 118
Tightening torque, wheel studs _____ 203
Tire markings ______________ 198, 199
Tire pressure _______________ 157, 198
Tires _____________________ 198, 233
Tools _________________________ 126Touching-in the paintwork _________ 210
Towbar attachment ______________ 152
Towbar load ____________________ 153
Towing the car __________________ 158
Towing, automatics ______________ 158
Traction _______________________ 147
Trailer weights __________________ 227
Trionic ________________________ 169
Trip computer ___________________ 54
Trip meter ______________________ 52
Trunk _________________________ 116
Trunk lid, opening ________________ 36
Turbo, points to note _____________ 132
UUnder the hood, 4-cyl ____________ 167
Under the hood, 6-cyl ____________ 168
Upholstery and trim ______________ 208
Upholstery and trim, care of _______ 208
Useful tips, ACC _________________ 75VVanity mirrors __________________ 112
Ventilated front seats _____________ 105
Viscosity, engine oil ______________ 228
WWarning labels ____________________ 8
Warning light, AIR BAG ____________ 26
Warning lights ___________________ 46
Washers ______________________ 180
Washers, windshield _____________ 181
Washing the car _________________ 209
Waxing and polishing ____________ 209
Wear indicators, tires _____________ 200
Wheels and tires ____________ 198, 233
Wheels and tires, sizes ___________ 233
Window-glass sensor, car alarm _____ 39
Windshield washers _______________ 65
Windshield wipers ________________ 65
Wiper blades, headlamp __________ 180
Wiper blades, replacing ___________ 180
Wipers and washers __________ 65, 180
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