2006 SUZUKI SX4 warning light

Downloaded from www.Manualslib.com manuals search engine 8B-1 Air Bag System:
Restraint
Air Bag System
Precautions
Precautions on Service and Diagnosis of Air
Bag System
S6RW0D8200004
WARNING!
• If the air bag system and another vehicle
system both need repair, SUZUKI
recommends that the air bag system be
repaired first, to help avoid unintended air
bag system activation.
• Do not modify the steering wheel,
dashboard, both front seat or any other on
or around air bag system components.
Modifications can adversely affect air bag
system performance and lead to injury.
• Be sure to follow the procedures described
in this section. Failure to follow
procedures could result in possible air bag
system activation, personal injury or
unneeded air bag system repairs.

• WARNING / CAUTION labels are attached on each
part of air bag system components (SDM, air bag
(inflator) modules and seat belt pretensioners). Be
sure to follow the instructions.
• Many of service procedures require disconnection of
“A/B” fuse and air bag (inflator) module(s) (driver
module, passenger module, side modules and curtain
modules) from initiator circuit to avoid an accidental
deployment.
• Do not apply power to the air bag system unless all
components are connected or a diagnostic flow
requests it, as this will set a DTC.
• The “Air Bag Diagnostic System Check” must be the
starting point of any air bag diagnostics. The “Air Bag
Diagnostic System Check” will verify proper “AIR
BAG” warning light operation and will lead you to the
correct flow to diagnose any air bag malfunctions.
Bypassing these procedures may result in extended
diagnostic time, incorrect diagnosis, and incorrect
parts replacements.
• Never use air bag component parts from another
vehicle.
• If the vehicle will be exposed to temperatures over 93
°C (200 °F) (for example, during a paint baking
process), remove the air bag system components
beforehand to avoid component damage or
unintended system activation.• When handling the air bag (inflator) modules (driver
module, passenger module, side modules and curtain
modules), seat belt pretensioners (driver module and
passenger module), SDM, forward impact-sensor or
side impact-sensor be careful not to drop it or apply
an impact to it. If an excessive impact was applied
(e.g., SDM, forward impact-sensor are dropped, air
bag (inflator) module is dropped from a height of 90
cm (3 ft) or more, seat belt pretensioner (retractor
assembly) is dropped from a height of 30 cm (1 ft) or
more), never attempt disassembly or repair but
replace it with a new one.
• When using electric welding, be sure to disconnect air
bag (inflator) module connectors (driver module,
passenger module, side modules and curtain
modules) and seat belt pretensioner connectors
(driver module and passenger module) respectively.
• When applying paint around the air bag system
related parts, use care so that the harness or
connector will not be exposed to the paint mist.
• Never expose air bag system component parts
directly to hot air (drying or baking the vehicle after
painting) or flames.
WARNING!
When performing service on or around air
bag system components or air bag wiring,
follow the procedures listed in “Disabling Air
Bag System” to temporarily disable the air
bag system.
Failure to follow procedures could result in
possible air bag system activation, personal
injury or unneeded air bag system repairs.

Precautions on Handling and Storage of Air Bag
System Components
S6RW0D8200002
SDM
WARNING!
Never power up air bag system when SDM is
not rigidly attached to the vehicle. Otherwise,
personal injury may result.

CAUTION!
After detecting one time of such collision as
to meet deployment conditions, SDM must
not be used. Refer to “Air Bag Diagnostic
System Check” when checking SDM.

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
I7RW01822003-02
1. SDM Connector “L04”

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-10
Connector “L04” (SDM connector)
Terminal Circuit Terminal Circuit
L04-1 — L04-27 Ignition switch (power source)
L04-2 “AIR BAG” warning light L04-28 Ground
L04-3 Driver air bag (–) L04-29 —
L04-4 Driver air bag (+) L04-30 —
L04-5 Passenger air bag (+) L04-31 —
L04-6 Passenger air bag (–) L04-32 DLC
L04-7 Driver seat belt pretensioner (–) L04-33 —
L04-8 Driver seat belt pretensioner (+) L04-34 —
L04-9 Passenger seat belt pretensioner (+) L04-35 —
L04-10 Passenger seat belt pretensioner (–) L04-36 —
L04-11 Driver side-air bag (–) (8-channel
system)L04-37 BCM communication line (air bag deployment
signal)
L04-12 Driver side-air bag (+) (8-channel
system)L04-38 —
L04-13 Passenger side-air bag (+) (8-
channel system)L04-39 —
L04-14 Passenger side-air bag (–) (8-
channel system)L04-40 —
L04-15 — L04-41 —
L04-16 — L04-42 —
L04-17 — L04-43 —
L04-18 — L04-44 Passenger side impact-sensor (–) (8-channel
system)
L04-19 Driver side curtain-air bag (–) (8-
channel system)L04-45 Passenger side impact-sensor (+) (8-channel
system)
L04-20 Driver side curtain-air bag (+) (8-
channel system)L04-46 Driver side impact-sensor (+) (8-channel
system)
L04-21 Passenger side curtain-air bag (+)
(8-channel system)L04-47 Driver side impact-sensor (–) (8-channel
system)
L04-22 Passenger side curtain-air bag (–)
(8-channel system)L04-48 —
L04-23 — L04-49 —
L04-24 — L04-50 Forward impact-sensor (+)
L04-25 — L04-51 Forward impact-sensor (–)
L04-26 —

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-12
Diagnostic Information and Procedures
Air Bag Diagnostic System CheckS6RW0D8204001
WARNING!
To avoid deployment when troubleshooting
the air bag system, do not use electrical test
equipment such as a battery powered or AC
powered voltmeter, ohmmeter, etc., or any
type of electrical equipment other than that
specified in this manual. Do not use a non-
powered probe type tester.
Instructions in this manual must be followed
carefully, otherwise personal injury may
result.

CAUTION!
• The order in which DTCs are diagnosed is
very important. Failure to diagnose the
DTCs in the order specified may result in
extended diagnostic time, incorrect
diagnosis and incorrect parts replacement.
• When measurement of resistance or
voltage is required in the flow, use a tester
along with a correct terminal adapter from
special tool (Connector test adapter kit).
• When a check for proper connection is
required, refer to “Inspection of
Intermittent and Poor Connections”.
• If an open circuit in the air bag wire
harness damaged, connector or terminal is
found, replace the wire harness,
connectors and terminals as an assembly.

The diagnostic procedures used are designed to find
and repair air bag system malfunctions.
To get the best results, it is important to use the
diagnostic flow and follow the sequence in the following.
1) Perform the “Air Bag Diagnostic System Check
Flow”.
(The “Air Bag Diagnostic System Check Flow” must
be the starting point of any air bag system diagnosis.
The “Air Bag Diagnostic System Check Flow” checks
for proper “AIR BAG” warning light operation through
“AIR BAG” warning light and whether air bag DTCs
exist.)
2) Refer to the proper diagnostic flow as directed by the
“Air Bag Diagnostic System Check Flow”.
(The “Air Bag Diagnostic System Check Flow” will
lead you to the correct flow to diagnose any air bag
system malfunctions. Bypassing these procedures
may result in extended diagnostic time, incorrect
diagnosis and incorrect parts replacement.)
3) Repeat the “Air Bag Diagnostic System Check Flow”
after any repair or diagnostic procedures have been
performed.
(Performing the “Air Bag Diagnostic System Check
Flow” after all repair or diagnostic procedures will
ensure that the repair has been made correctly and
that no other malfunctions exist.)
A: Combination meter 6. Side curtain-air bag (inflator) module (8-
channel system)14. “A/B” fuse in junction block assembly
B: Steering wheel 7. Contact coil assembly 15. Air bag harness in main harness
C: Seat 8. Forward impact-sensor 16. Air bag harness in instrument panel harness
1. “AIR BAG” warning light 9. Apron-side-member (driver side) 17. Air bag harness in floor harness
2. Driver air bag (inflator) module 10. Side impact-sensor (8-channel system) 18. Side-air bag harness (8-channel system)
3. Passenger air bag facing cover 11. Side sill inner panel 19. Side curtain-air bag harness (8-channel
system)
4. Passenger air bag (inflator) module 12. SDM 20. Ground for air bag system
5. Side-air bag (inflator) module (8-channel
system)13. Seat belt pretensioner

Downloaded from www.Manualslib.com manuals search engine 8B-13 Air Bag System:
Air Bag Diagnostic System Check FlowS6RW0D8204002
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to each
flow.
• When measurement of resistance or voltage is required in the flow, use a tester along with a correct
terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor
Connections”.
• If an open circuit in the air bag wire harness damaged, connector or terminal is found, replace the
wire harness, connectors and terminals as an assembly.

Step Action Yes No
1Battery voltage check.
1) Measure battery voltage.
Is it 10 – 14 V?Go to Step 2. Proceed to “Battery
Inspection in Section
1J”.
2“AIR BAG” warning light check (6 times flushing check).
1) Turn ON ignition switch, and then check that “AIR BAG”
warning light flushes.
Does “AIR BAG” warning light flash 6 times?Go to Step 3. Go to Step 4.
3“AIR BAG” warning light check (turning off check).
1) In the state of Step 2. check that “AIR BAG” warning light
turn OFF after flashing 6 times.
Does “AIR BAG” warning light turn OFF?Go to Step 5. Go to Step 6.
4“AIR BAG” warning light circuit check
Does “AIR BAG” warning light come ON steady?Go to checking flow of
““AIR BAG” Warning
Light Comes ON
Steady”. After carrying
out it flow, proceed to
St ep 6 .Go to checking flow of
““AIR BAG” Warning
Light Does Not Come
ON”. After carrying out it
flow, proceed to Step 6.
5DTC check
1) Check DTC using SUZUKI scan tool referring to “DTC
Check”.
Is “NO CODES” displayed on SUZUKI scan tool?Air bag system is in
good condition.Check intermittent
troubles referring to
“Inspection of
Intermittent and Poor
Connections”.
If intermittent troubles
are OK, check and
repair applicable DTC
flow and then repeat
this flow.
6DTC check
1) Check DTC using SUZUKI scan tool, referring to “DTC
Check”.
Is “NO CODES” displayed on SUZUKI scan tool?Substitute a known-
good SDM and recheck.Check and repair
applicable DTC flow,
and then repeat this
flow.

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-14
DTC TableS6RW0D8204003
NOTE
The DTCs (B1022 and B1023) shown with asterisk (*) below have been established only for the M15A
engine model with 4A/T equipped with slip-control (i.e., Hong Kong model). These codes are meant to
be recorded when External Scrapping Deployment Controller is operated by a Japanese authorized
special scrapping trader. Therefore, normally these codes will not appear outside Japan. However,
should these codes be detected, SDM must be replaced because the cause is due to SDM detection
failure.

SDM DTC
DTC No. Detecting itemDetecting condition
(DTC will set when detecting)Trouble area
—Normal — —
) B1013 SDM internal failureMalfunctioned SDM internal
circuit, G sensor, memory or
CPU.•SDM
) B1014 “AIR BAG” warning light circuit“AIR BAG” warning light circuit
has been shorted to ground,
shorted to power or opened for
more than 4 sec.• “AIR BAG” warning light circuit
• Combination meter
•SDM
) B1016 Power supply voltage too highPower supply voltage is more
than 21.4 V for, more than 16
sec.• Charging system
•SDM
) B1017 Power supply voltage too lowPower supply voltage is less
than 7.2 V for more than 16 sec.• Charging system
•SDM
) B1021Front air bag deployment
recordDeployment of front air bag has
been recorded in SDM.If this DTC has been recorded
even though air bag has not
been deployed
•SDM
• Driver and/or Passenger air
bag module
• Those initiator circuit.
*B1022Scrapping deployment
controller activatedScrapping deployment command
has been input to SDM from
external scrapping deployment
controller•SDM
*B1023 Scraping deployment recordScrapping deployment execution
has been recorded in SDM•SDM
) B1024Driver side-air bag deployment
recordDeployment of driver side-air
bag has been recorded in SDM.If this DTC has been recorded
even though side-air bag has not
been deployed
•SDM
• Driver side-air bag module
• Its initiator circuit
) B1025Passenger side-air bag
deployment recordDeployment of passenger side-
air bag has been recorded in
SDM.If this DTC has been recorded
even though side-air bag has not
been deployed
•SDM
• Passenger side-air bag
module
• Its initiator circuit

Downloaded from www.Manualslib.com manuals search engine 8B-19 Air Bag System:
Scan Tool Data Definition
Buck Up Volt (V)
This parameter indicates the capacity of the backup
capacitor installed to maintain the ignition current (as
much as possible) even when the power supply to SDM
that ignites the inflator is shut off.
Battery Voltage (V)
Battery voltage is an analog input signal read by SDM.
Dirv Air Bag Ini Res (Driver air bag initiator
resistance) (ohm)
This parameter indicates the resistance of the driver air
bag initiator circuit.
Pass Air Bag Ini Res (Passenger air bag initiator
resistance) (ohm)
This parameter indicates the resistance of the passenger
air bag initiator circuit.
Driv Preten Ini Res (Driver pretensioner initiator
resistance) (ohm)
This parameter indicates the resistance of the driver seat
belt pretensioner initiator circuit.Pass Preten Ini Res (Passenger pretensioner
initiator resistance) (ohm)
This parameter indicates the resistance of the passenger
seat belt pretensioner initiator circuit.
Driv Sidebag Ini Res (Driver side-air bag initiator
resistance) (ohm)
This parameter indicates the resistance of the driver
side-air bag initiator circuit.
Pass Sidebag Ini Res (Passenger side-air bag
initiator resistance) (ohm)
This parameter indicates the resistance of the passenger
side-air bag initiator circuit.
Driv curtain Ini RES (Driver side curtain-air bag
initiator resistance) (ohm)
This parameter indicates the resistance of the driver side
curtain-air bag initiator circuit.
Pass curtain Ini RES (Passenger side curtain-air bag
initiator resistance) (ohm)
This parameter indicates the resistance of the passenger
side curtain-air bag initiator circuit.
System ID (4ch/8ch)
This parameter indicates the number of initiator circuits.
“AIR BAG” Warning Light Comes ON SteadyS6RW0D8204007
Wiring Diagram
“L04”14
5
9RED
RED/BLK GRN
YEL/BLK
BLK
8 7
11
12
15
L04-2
L04-28
L04-27
“G241” “G271” “L313”
13
12V
6
1BLK
WHT WHT
WHT/RED 2
34
310 BLK
“G273”
“E324”
I6RW0C820005-01
1. Battery 5. “IGN” fuse 9. “METER” fuse 13. Light driver
2. Main fuse 6. Ignition switch 10. “DOME” fuse 14. SDM
3. Fuse 7. Junction block assembly 11. Combination meter 15. Ground for SDM
4. Individual circuit fuse box No.1 8. “A/B” fuse 12. “AIR BAG” warning light

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-20
Troubleshooting
Step Action Yes No
1Was “Air Bag Diagnostic System Check Flow” performed?Go to Step 2. Go to “Air Bag
Diagnostic System
Check Flow”.
2SDM power supply and ground circuit check
1) Check SDM power supply and ground circuit referring to
“SDM Power Supply and Ground Circuit Check”.
Is SDM power supply and ground circuit in good condition?Go to Step 3. Repair defective power
supply and ground
circuit.
3“AIR BAG” warning light circuit check
1) Disconnect combination meter connector “G241”
referring to “Combination Meter Removal and Installation
in Section 9C”.
2) Disconnect SDM connector “L04”.
3) Check for proper connection to SDM connector at
terminal “L04-2”.
4) Check for proper connection to combination meter at
terminal “G241-5”.
5) If OK, measure resistance between “G241-5” and “L04-
2” terminals.
Special tool
(A): 09932–76010
Is measured resistance 1
Ω or less?Go to Step 4. Repair “YEL/BLK” wire
(between combination
meter and SDM
connector) for open or
high resistance.
4“AIR BAG” warning light circuit check
1) Measure resistance between “L04-2” terminal and body
ground.
Special tool
(A): 09932–76010
Is measured resistance infinity?Go to Step 5. Repair “YEL/BLK” wire
(between combination
meter and SDM
connector) for short to
ground.
(A)
“L04-2”
“G241-5”
I7RW01822006-01
“L04-2”(A)
I7RW01822007-01