2006 SUZUKI SX4 Service Workshop Manual

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• Never attempt disassembly of SDM.
• When storing SDM, select a place where neither high
temperature nor high humidity is anticipated and oil,
water and dust are kept off.
• If SDM has been dropped, replace it with a new one.
• If SDM installation part of floor was damaged, repair
that part completely before reinstallation.
• All SDM and mounting bracket fasteners must be
carefully torqued and the arrow must be pointed
toward the front of the vehicle to ensure proper
operation of the air bag system.
Live (Undeployed) Air Bag (Inflator) Modules
Special care is necessary when handling and storing a
live (undeployed) air bag (inflator) modules.
The rapid gas generation produced during deployment
of the air bag could cause the air bag (inflator) module,
or an object in front of the air bag (inflator) module, to be
thrown through the air in the unlikely event of an
accidental deployment.
WARNING!
Never attempt to measure the resistance of
the air bag (inflator) modules (driver module,
passenger module and side modules and
curtain modules). It is very dangerous as the
electric current from the tester may deploy
the air bag.

• Never attempt disassembly of the air bag (inflator)
modules.
• If any abnormality is found, be sure to replace it with
new one as an assembly.
• When an abnormality is noted as existing in the live
(undeployed) air bag (inflator) module, be sure to
deploy it before discarding it.
• When grease, cleaning agent, oil, water, etc., got on
the air bag (inflator) modules (driver and passenger),
wipe it off immediately with a dry cloth.
• If air bag (inflator) module was dropped from a height
of 90 cm (3 ft) or more, it should be replaced with a
new one as an assembly.
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WARNING!
• For handling and storage of a live air bag
(inflator) module, select a place where the
ambient temperature below 65 °C (150 °F),
without high humidity and away from
electric noise.
• When carrying a live air bag (inflator)
module, make sure the bag opening is
pointed away from you. In case of an
accidental deployment, the bag will then
deploy with minimal chance of injury.
Never carry the air bag (inflator) module by
the wires or connector on the underside of
the module.
Otherwise, personal injury may result.

WARNING!
When leaving or storing live air bag (inflator)
module unattended on bench or other
surface, always its bag (trim cover) facing up
and away from surface.
It is also prohibited to place anything on top
of the trim cover and stack air bag (inflator)
modules.
This is necessary so that a free space is
provided to allow the air bag to expand in the
unlikely event of accidental deployment.
Otherwise, personal injury may result.

Live (Inactivated) Seat Belt Pretensioner
Special care is necessary when handling and storing a
live (inactivated) seat belt pretensioners.
Also, when the seat belt pretensioners activate, gas is
generated and the seat belt (1) is retracted into the
retractor assembly (2) quickly.
Note, therefore, that if they activate accidentally, the seat
belt pretensioners and other object(s) around them may
be thrown through the air.
WARNING!
Never attempt to measure the resistance of
the seat belt pretensioners. It is very
dangerous as the electric current from the
tester may activate pretensioner.

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• Never attempt to disassemble the seat belt
pretensioners (retractor assembly).
• If any abnormality is found, be sure to replace it with
new one as an assembly.
• When an abnormality is noted as existing in the live
(inactivated) seat belt pretensioner, be sure to activate
it before discarding it.
• When grease, cleaning agent oil, water, etc., got on
the seat belt pretensioners (retractor assembly), wipe
it off immediately with a dry cloth.
• If seat belt pretensioner was dropped from a height of
30 cm (1 ft) or more, it should be replaced with a new
one as an assembly.
WARNING!
• For handling and storage of a live seat belt
pretensioner, select a place where the
ambient temperature below 65 °C (150 °F),
without high humidity and away from
electric noise.
• Never carry the seat belt pretensioner by
webbing.
• When placing a live seat belt pretensioner
on the workbench or other surface, be sure
not to lay it with its exhaust hole (1)
provided side facing down. It is also
prohibited to put something on its face
with an exhaust hole (1) or to put a seat
belt pretensioner on top of another.
Otherwise, personal injury may result.

Deployed Air Bag (Inflator) Module and Activated
Seat Belt Pretensioner
WARNING!
• The air bag (inflator) module and seat belt
pretensioner immediately after
deployment/activation is very hot. Wait for
at least 30 minutes to cool it off before
proceeding the work.
• Do not apply water, oil, etc. to deployed air
bag (inflator) module and to activate seat
belt pretensioner.
• After an air bag (inflator) module has been
deployed, the surface of the air bag may
contain a powdery residue. This powder
consists primarily of cornstarch (used to
lubricate the bag as it inflates) and by-
products of the chemical reaction. As with
many service procedures, gloves and
safety glasses should be worn.
• Wash your hands with mild soap and water
after completing the work.

Refer to the procedure described under “Deployed Air
Bag (Inflator) Module and Activated Seat Belt
Pretensioner Disposal” for disposal.
Air Bag Wire Harness and Connector
Air bag wire harness is included in main harness (1),
instrument panel harness (4), floor harness (3), seat
harness (5) and curtain air bag harness (6). Air bag wire
harness can be identified easily as the part of connector
side wire harness is covered with a yellow protection
tube. Be very careful when handling it.
• When an open in air bag wire harness, damaged wire
harness, connector or terminal is found, replace wire
harness, connectors and terminals as an assembly.
• When installing it, be careful so that the air bag wire
harness is not caught or does not interfere with other
parts.
• Make sure air bag system grounding point (2) is clean
and ground is securely fastened for optimum metal-to-
metal contact. Poor grounding can cause intermittent
problems that are difficult to diagnose.
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12
6
3
5
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Precautions on Disposal of Air Bag and Seat
Belt Pretensioner
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Do not dispose of the live (undeployed) air bag (inflator)
modules and the live (inactivated) seat belt
pretensioners.
When disposal is necessary, be sure to deploy / activate
the air bag and seat belt pretensioner according to
deployment / activation procedure described in “Air Bag
(Inflator) Module and Seat Belt Pretensioner Disposal”.
WARNING!
Failure to follow proper air bag (inflator)
module and seat belt pretensioner disposal
procedures can result in air bag deployment
and pretensioner activation which could
cause personal injury. Undeployed air bag
(inflator) module and inactivated seat belt
pretensioner must not be disposed of
through normal refuse channels.
The undeployed air bag (inflator) module and
inactivated seat belt pretensioner contain
substances that can cause severe illness or
personal injury if the sealed container is
damaged during disposal.

General Description
Air Bag System ConstructionS6RW0D8201001
There are two types of air bag system in this model
depending on vehicle specification.
One is 4-channel air bag system and other is 8-channel
air bag system.
4-channel air bag system consists of the following parts.
• Driver and passenger air bag (inflator) modules
• Driver and passenger seat belt pretensioners
• Forward impact-sensor
•SDM
8-channel air bag system consists of the following
component.
• Driver and passenger air bag (inflator) modules
• Driver and passenger seat belt pretensioners
• Driver and passenger side-air bag (inflator) modules
• Driver and passenger side curtain-air bag (inflator)
modules
• Forward impact-sensor
• Driver and passenger side impact-sensors
•SDM
With the air bag system which includes front air bags for
both the driver’s and passenger’s sides as well as the
seat belt pretensioners, the sag of the seat belt is taken
up (for seat belt with pretensioner), the driver air bag
(inflator) module is deployed from the center of the
steering column and the passenger air bag (inflator)
module from the top of the instrument panel in front of
the front passenger seat in occurrence of a front collision
with an impact larger than a certain set value to
supplement protection offered by the driver and front
passenger seat belts.
In addition, with the air bag system which includes side-
air bags and side curtain-air bags for both the driver’s
and passenger’s side (8-channel system).
Side-air bag (inflator) module is deployed from the side
of the seat back in occurrence of a sideward collision
with an impact larger than a certain set value.Side curtain-air bag (inflator) module is deployed from
the roof side in occurrence of a sideward collision with
an impact larger than a certain set value.
For details of air bag system input / output, refer to “Air
Bag System Input / Output Table”.
1. Driver air bag 4. Side-air bag
2. Passenger air bag 5. Side curtain-air bag
3. Seat belt pretensioner
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The air bag system is designed to activate only in severe
frontal “a” and sideward “b” collisions. It is not designed
to activate in rear impacts, rollovers, or minor frontal and
sideward collisions, since it would offer no protection in
those types of accidents.
Air Bag System Block DiagramS6RW0D8201004
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Battery Voltage
Forward Impact-Sensor
Driver Side Impact-Sensor
Passenger Side Impact-Sensor
DC / DC Converter
Back Up Capacitor
Safing Power Driver
Mechanical Longitudinal G Sensor (switch)
X-Y G sensor
(Longitudinal /
Lateral Acceleration)
Driver Side-Air Bag
Driver Side Curtain-Air Bag
Passenger Side Curtain-Air Bag
Passenger Side-Air Bag
Passenger Seat Belt Pretensioner
Driver Seat Belt Pretensioner
Passenger Air Bag
Driver Air Bag
INPUTOUTPUTSDM
Front Air
Bag and
Seat Belt
Preten-
tioner
Deploy-
ment
Driver
Side
Air Bag
Deploy-
ment
Driver
Side
Curtain
Air Bag
Deploy-
ment
Driver
Main CPU
BCM and Cmbination Meter
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Air Bag System Input / Output TableS6RW0D8201002
Forward inpact-sensor
Driver side inpact-
sensor
Passenger side inpact-
sensor Mecanical longitudinal
G sensor in SDMX-Y G sensor
(longitudinal / lateral
acceleration) in SDM
OUTPUT
(deployment &
activation
device) INPUT
(sensor signal)
Driver & Passenger
air bag inflator
modulesDriver & Passenger
seat belt
pretentionersDriver side-air bag
& driver side
curtain-air bag
inflator modulesPassenger side-air
bag & passenger
side curtain-air bag
inflator modules
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Schematic and Routing Diagram
Air Bag System Wiring Circuit DiagramS6RW0D8202001
BLK
YEL/GRN YEL/GRN
YEL/BLU YEL/BLU
WHT/RED
LT GRN/BLK
WHT/GRN
LT GRN
2223 15
29
21 19
20GRN/RED GRN/RED
GRN GRN
[A]
[B]“E40”, “E388”, “G04” “E388”, “L04” “L395”, “Q102” “Q134”, “S121” and “S172”
L04-4
L04-3
“L395” “Q132” “Q103”
L04-28 L04-46
L04-47
L04-45
L04-44 “L36”“G347” “S172” “L378” “G345”
“L35”ORN
18L04-50
L04-51 “E40”
“Q134” “Q105” “L385”
L04-12
L04-11
GRY/RED
GRY
BLK BLU
27
PNK/BLK ORN
PNK/BLK
BLU/RED
YEL/REDBLU/RED
YEL/RED
“L377” “G344” “G259”
24L04-5
L04-6
GRN/ORN
GRN/YEL
BLU/ORN
BLU/YEL
L04-9
L04-7
L04-8
25
26 “L283”
L04-10
“L285”
L04-20
L04-19“Q104” “Q133” “L384”
L04-13
L04-14BLK BLU BRN/WHT
BRN28
BLK/YEL
BRN/YELBLK/YEL
BRN/YEL30 “Q102”L04-21
L04-22
L04-2
L04-27
L04-37
“L04”
“L04”
“E388” “L372”
L04-32
32
31
G
33Y
X
34
: 12V : 30V : 30V : 5V
12V5V30V 30V
35RED 7
119
10“L313” “G272” “G271”
“G241”
“G273”
“G04”
YEL
1314
YEL/BLK
YEL/BLK
RED/BLK
12
12V
PPL/WHT
8
WHT/RED
WHT
WHT
GRN
12
3
3
5
4
6
BLK
“E324”
17+BB
[C]
16
[D]12V
PPL/WHTYEL11
16
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Downloaded from www.Manualslib.com manuals search engine 8B-9 Air Bag System:
Terminal arrangement of SDM (viewed from harness side)
[A]: Shorting bar 11. BCM 25. Driver seat belt pretensioner
[B]: Connector 12. Combination meter 26. Passenger seat belt pretensioner
[C]: Junction block with BCM model 13. “AIR BAG” warning light27. Driver side-air bag (inflator) module (8-channel system)
[D]: Junction block without BCM model 14. Light driver 28. Passenger side-air bag (inflator) module (8-channel system)
1. Battery 15. SDM 29. Driver side curtain-air bag (inflator) module (8-channel
system)
2. Main fuse 16. To HVAC control module (auto A/C model) 30. Passenger side curtain-air bag (inflator) module (8-channel
system)
3. Fuse 17. Data link connector (DLC) 31. Safing power driver
4. Individual circuit fuse box No.1 18. Forward impact-sensor 32. X-Y-G (longitudinal / lateral acceleration)
5. “IGN” fuse 19. Driver side impact-sensor (8-channel
system)33. DC / DC converter
6. Ignition switch 20. Passenger side impact-sensor (8-channel
system)34. Mechanical longitudinal G sensor (switch)
7. Junction block assembly 21. Ground for air bag system 35. Back up capacitor
8. “DOME” fuse 22. Contact coil assembly
9. “METER” fuse 23. Driver air bag (inflator) module
10. “A/B” fuse 24. Passenger air bag (inflator) module
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
1
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1. SDM Connector “L04”