2004 SAAB 9-5 catalytic converter

6Engine compartment
IB1737
Engine ______________________ 203
Checking the oil level ___________ 204
Changing engine oil ____________ 204
Engine oil, specification _________ 273
Braking______________________ 168
ABS brakes __________________ 169
Brake and clutch fluid ___________ 208
Brake system _________________ 277
Brake pads ___________________ 277
Fuses _________________ 227
Changing a fuse _________ 229
Relays ________________ 230
Table of fuses ___________ 227Temperature gauge ______ 61
Driving in hot weather_____ 177
Driving in cold weather ____ 176
Coolant________________ 207
Coolant capacity_________ 272
Power steering fluid _______ 209
Steering, technical data ___ 277
Wipers and washers ______ 73
Washers _______________ 214
Washer jets ____________ 214
Jump starting _________________ 191
Battery ______________________ 210
Charging/replacing the battery____ 211
Manual transmission ___________ 158
Automatic transmission _________ 159
Automatic transmission,
technical data ________________ 276
Manual gearbox, technical data ___ 276
Important considerations for driving 151
Turbo unit ___________________ 201
Engine, technical data __________ 272Ignition switch ___________ 148
Drive belts ______________ 212
Spark plugs _____________ 275
Catalytic converter _______ 152Warning labels __________ 7
V.I.N. number ___________ 280
Engine number __________ 280
Gearbox number _________ 280
Color code______________ 280
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57 Instruments and controls
CHECK message indicator
This light indicates that there is a message
in the Saab Information Display (SID). A
chime will also sound
(see page 67).
Central warning light
This light will come on and a chime will
sound if a fault has been detected in any
system that is critical to safety. Any of the
following can activate the central warning
light and alarm:
 Airbag system.
 Low oil pressure in engine.
 Parking brake is on (when car is moving).
 Brake fluid level low.
 Fault detected in ABS system.
 Electronic brake force distribution (distri-
bution of brake pressure between front
and rear wheels).
 Engine overheating.
 Alternator not charging properly.
Engine malfunction
(CHECK ENGINE)
This light indicates a malfunction in the
fuel-injection or ignition system. The car
may still be driven with care and with some-
what diminished performance (see page
151).
Indicator, fuel
This light comes on when there is less than
about 2.5 gallons (10 liters) of fuel left in the
tank.
WARNING
An illuminated ”Engine malfunction
(CHECK ENGINE)” indicator light indi-
cates an engine-related problem. While
your car may be able to be driven with the
”Engine malfunction (CHECK ENGINE)”
indicator light illuminated (Limp-home
mode), you are advised to have your car
serviced at an authorized Saab dealer as
soon as possible.
Continued driving without this problem
being corrected might cause serious
further damage to your car and create
unsafe driving conditions. The operator
should be prepared to take action if such
unsafe conditions arise (e.g.brake
smoothly, engage neutral, stop in a suita-
ble place, switch off the engine, etc.).
NOTICEThe car should be checked immediately
at an authorized Saab dealer to prevent
more serious faults from arising.NOTICEIf the car runs out of fuel, air can be drawn
in with the fuel, which, in turn, can cause
the catalytic converter to be damaged by
overheating.
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151 Starting and driving
Limp-home modeThe engine management system has a
diagnostic feature that continually checks a
number of internal functions. If, for example,
a fault is detected in the throttle valve, the
engine management system will go into
Limp-home mode.This limits idling control,
disables the cruise-control system and
limits the capacity of the A/C compressor.
If the limp-home mode is in operation
(”Engine malfunction (CHECK ENGINE)”
light on, see below) and the outside temper-
ature is close to or below freezing, you may
need to use some throttle on starting (some
pressure on the accelerator).
If the diagnostic system has detected a fault
in the engine-management system, the
”Engine malfunction (CHECK ENGINE)”
light on the main instrument panel will
come on (see page 57), indicating that you
should have the car checked as soon as
possible by an authorized Saab dealer.
Important
considerations for
drivingThe engine-management system in the
Saab 9-5 is called Saab Trionic T7. The
system manages the ignition, fuel injection
and turbo boost pressure.
The Trionic T7 system developed by Saab
is an intelligent engine-management
system designed to achieve optimum driv-
ability under differing driving conditions.
The system makes adjustments automati-
cally, for instance, if the car is being driven
at altitude (oxygen-deficient air), for differ-
ent grades of fuel (AON 87–93) and for dif-
ferent load conditions.
1 Starting and driving
 Refrain from using full throttle before
the engine has warmed up (before
needle in mid-range on temperature
gauge).
 A safety function prevents the engine
from revving faster than 6,000 rpm by
limiting the induction air.
2 Stopping the engine
 Do not rev the engine immediately
before switching it off – stop the engine
when it is idling.
3 Regulating the boost pressure
 The system is optimized for fuel with an
octane rating of AON 90. The 2.3 Turbo
and 2.3 T are optimized for AON 93.
NOTICEIf the CHECK ENGINE warning light
starts to flash, ease off the accelerator
slightly. If the light does not cease to flash
within 5 seconds, stop the car in a suit-
able place as soon as possible and turn
off the engine. The car must be towed to
an authorized Saab dealer.
If the CHECK ENGINE warning light
flashes, it indicates that the engine is mis-
firing which can result in damage to the
catalytic converter.
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152 Starting and driving
One of the 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).
To ensure that the catalytic converter con-
tinues to function properly, and also to avoid
damage to the converter and its associated
components, the following points must be
observed:
 Have the car serviced regularly in accor-
dance with the service program. The fuel
and ignition systems are particularly
important in this context.
 Always be alert to any misfiring of the
engine (not running on all cylinders) and
any loss of power or performance. At the
first sign of a malfunction, reduce speed
and take the car to an authorized Saab
dealer as soon as possible.
 If the engine fails to start (in very cold
weather or if the battery is flat), the car can
be push started (manual gearbox only) or
started using jumper cables to a donor
NOTICE If the engine sounds strange there is a
fault in the system. Have the car
checked without delay by an autho-
rized Saab dealer.
 The use of fuel with too low an octane
rating can cause serious engine dam-
age.
WARNING
If the engine is being run with the car on a
rolling road or dynamometer, longer than
for a standard state emission inspection,
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 corresponding road speed.
NOTICEUse only unleaded gasoline. Leaded gas-
oline is detrimental to the catalyst and
oxygen sensor and will seriously impair
the function of the catalytic converter.
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153 Starting and driving
battery. However, as soon as you have
started the engine, it is important that it
runs on all cylinders. If it is misfiring, allow
i t t o i d l e f o r u p t o f i v e m i n u t e s t o g i v e i t t i m e
to settle and run smoothly. If, after this
time, the engine still fails to run properly,
turn off the engine and get in touch with
an authorized Saab dealer for advice.  Never park the car on dry grass or other
combustible material. The catalytic con-
verter gets very hot and could therefore
start a fire.
 Never drive off if the engine is misfiring.
 If you jump start the car when the engine
is already up to normal temperature, the
engine must start to run on all cylinders.
Stop jump-starting if the engine fails to
start immediately.
Failure to follow these directions could
result in the catalytic converter and associ-
ated components being damaged, and
could represent a breach of the warranty
conditions.
Fuel filler flap(certain variants only)The fuel filler flap is opened by means of a
button on the driver’s door. The flap is
spring-loaded, so it opens slightly automat-
ically when released.
NOTICEIf the car runs out of fuel, it is possible for
air to get into the fuel system. If this
happens, the catalytic converter may
overheat and be damaged.
IB1289
2
2
1
3
3
Oxygen-sensor-controlled
injection system 1 Engine control module
2 Oxygen sensor (lambda probe)
3 Catalytic converters
B466
Button for releasing filler flap
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202 Car care and technical informationEngine familiesSaab cars imported into the United States
and Canada meet all applicable emission
control standards. The engine family and
appropriate tune-up specifications are iden-
tified on a label affixed to the left front inner
fender.
These engine families meet applicable EPA
Federal Standards, California State Stan-
dards and Canadian Federal Standards and
are equipped with the following systems:
• Sequential multiport fuel injection sys-
tem.
 Three way catalytic converter.
 Crankcase emissions control system.
 Evaporative emission control system.
 On-Board diagnostic (OBD II) system.
Emission control
systemsThe systems for controlling emissions to the
atmosphere require regular checking and
adjustment at the intervals specified in the
service program.
In addition to meeting the exhaust emission
regulations and thereby helping to keep the
environment clean, a correctly tuned engine
will also give maximum fuel economy.Saab Trionic engine management
systemThe Saab Trionic engine management
system is a unique Saab development that
combines sequential multiport fuel injection,
electronic distributorless ignition and turbo-
charger boost pressure control into one sys-
tem.The Trionic engine control module (ECM)
monitors many different engine parameters
such as:
 Intake manifold pressure.
 Intake air temperature.
 Crankshaft position.
 Engine coolant temperature.
 Throttle position and
 The oxygen content of the exhaust gases.
The ECM receives information regarding
engine knocking from a sophisticated feed-
back function in the ignition discharge unit.
By processing all of this information, the Tri-
onic system can control fuel injector open-
ing duration, ignition timing and turbo-
charger boost pressure to provide excellent
engine performance while maintaining low
emissions and fuel consumption.
WARNING
Engine exhaust, some of its constituents,
and certain vehicle components contain
or emit chemicals known to the State of
CA to cause cancer and birth defects and
reproductive harm. In addition, certain
fluids contained in vehicles and certain
products of component wear contain or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects or
other reproductive harm.
NOTICEThe Trionic engine management systems
continuously monitors the operation of
these systems and have on-board diag-
nostic capabilities (OBD II).
If the ”Engine malfunction (CHECK
ENGINE)” lamp in the main instru-
ment illuminates, this indicates that the
Trionic ECM has detected a problem. The
car will continue to operate, but perfor-
mance may be diminished. You should
have your car checked by a Saab dealer
as soon as possible.
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283 Index
Index
AA/C system, fault diagnosis
_______ 252
A/C system, maintenance
_________ 252
ABS brakes
____________________ 168
ACC
__________________________ 75
ACC functions
___________________ 78
ACC, automatic climate control
_____ 75
ACC, calibration
_________________ 83
ACC, condensation _______________ 84
ACC, programming _______________ 81
ACC, useful tips
_________________ 83
Adjusting the steering wheel
_______ 120
Adjustment, seats
________________ 12
Air conditioning (A/C), fault diagnosis
and maintenance ______________ 252
Air distribution, ACC ______________ 80
Airbag
_________________________ 31
Alarm _________________________ 46
Alarm functions
__________________ 49
Alarm signals
________________ 46
, 49
Alternator
_____________________ 212
Alternator drive belt
__________ 212
, 275
Alternator rating
________________ 275
Anticorrosion treatment
___________ 256
Antidazzle rear-view mirror
________ 125
Ashtrays
______________________ 131
Audio System
___________________ 85
Audio System, quick guide
_________ 87
Autochecking of lights on starting
____ 60Automatic climate control (ACC)
_____ 75
Automatic transmission, technical
data
_________________________ 276
Aviod theft, tip
__________________ 197
BBattery
________________________ 210
Battery charging/replacing
________ 211
Battery, boost starting
____________ 191
Before a long journey ____________ 258
Before towing a camper or trailer
___ 181
Belt guide
______________________ 17
Boost starting using jump leads
____ 191
Brake and clutch fluid
____________ 208
Brake-fluid reservoir
_____________ 208
Brakes, technical data ____________ 277
Bulbs, changing
________________ 215
Bulbs, table of
__________________ 226
Buying new tires ________________ 235
CCD changer
_____________________ 97
CD player
______________________ 95
CHECK messages
_______________ 67
CHECKING
_____________________ 67
Calibration, ACC
_________________ 83
Cancelling the programmed settings
_81
Car alarm
______________________ 46
Car care
______________________ 199
Cargo net, 9-5 Wagon
____________ 142Carpeting, care of
_______________ 253
Cassette player
__________________ 92
Catalytic converter, important
considerations _________________ 152
Central locking ___________________ 40
Change language in SID
___________ 68
Change of address notification
_____ 266
Changing a wheel
_______________ 247
Changing bulbs
_________________ 215
Changing wiper blades
___________ 213
Charger/Jump starting ____________ 193
Charging the battery/Jump starting
__ 193
Chassis number
________________ 280
Chassis number, key to
___________ 281
Checks before towing a camper or
trailer
________________________ 181
Child safety
_____________________ 23
Child safety locks, rear doors
_______ 43
Cleaning, engine bay
_____________ 255
Clock
_______________________ 67
, 68
Color code, body
________________ 280
Color code, trim _________________ 280
Compact spare wheel
____________ 246
Compass
______________________ 126
Condensation, ACC
_______________ 84
Coolant
_______________________ 207
Courtesy Headlight Feature
________ 70
Cruise control
__________________ 167
Cup holder
_____________________ 134
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