2000 SUZUKI SWIFT Transmission Service Workshop Manual

RESTRAINT SYSTEM 10-3
Driver and Front Passenger Air Bags and Seat Belt Pretensioners
With the air bag system which includes air bags for both the driver’s and passenger’s sides as well as the seat
belt pretensioners, the pretensioner takes up the sag of the seat belt, 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.
SYSTEM SPECIFICATION
SEAT BELT PRETENSIONER (IF EQUIPPED)
Some seat belts of the driver and front passenger seats are provided with a pretensioner as an optional function
unit. The pretensioner is incorporated in retractor assembly and controlled by SDM as one of air bag system
components. It will be activated at the same time as the air bag when an impact at the front of vehicle exceeds
the specified value.
When servicing seat belt (retractor assembly) with pretensioner, be sure to observe all WARNINGS and CAU-
TIONS in this section and “SERVICE PRECAUTIONS” of “ON-VEHICLE SERVICE” in Section 10B
DIAGNOSIS
For diagnosis of air bag system (including in seat belt pretensioner), refer to Section 10B.
INSPECTION AND REPAIR REQUIRED AFTER ACCIDENT
After an accident, whether the seat belt pretensioner has been activated or not, be sure to perform checks and
repairs described on “REPAIRS AND INSPECTIONS REQUIRED AFTER ACCIDENT” under “DIAGNOSIS” in
Section 10B.Type 1 Type 2 Type 3
Front
seatSeat belt with ELRDriver air bag
Seat belt with ELR and
pretensionerDriver and front passenger air bags
Seat belt wit ELR and pretensioner
Rear
seatSeat belt with A-ELR
(right and left)
Seat belt (center)Seat belt with A-ELR
(right and left)
Seat belt (center)Seat belt with A-ELR (right and left)
Seat belt (center)
CAUTION:
Do not reuse the seat belt pretensioner (retractor assembly) that has operated but replace it with a
new one as an assembly. For checking procedure of its operation, refer to “SERVICE PRECAUTIONS”
of “ON-VEHICLE SERVICE” in Section 10B.

10-4 RESTRAINT SYSTEM
ON-VEHICLE SERVICE
SERVICE PRECAUTIONS
SERVICE AND DIAGNOSIS
Before servicing or replacing seat belts, refer to following precautionary items.
Seat belts should be normal relative to strap retractor and buckle portions.
Keep sharp edges and damaging objects away from belts.
Avoid bending or damaging any portion of belt buckle or latch plate.
Do not bleach or dye belt webbing. (Use only mild soap and lukewarm water to clean it.)
When installing a seat belt anchor bolt, it should be tightened by hand at first to prevent cross-threading and
then to specified torque.
Do not attempt any repairs on retractor mechanisms or retractor covers. Replace defective assemblies with
new replacement parts.
Keep belts dry and clean at all times.
If there exist any parts in question, replace such parts.
Replace belts whose webbing is cut or otherwise damaged.
Do not put anything into trim panel opening which seat belt webbing passes through.
For Seat Belt with Pretensioner
Refer to “SERVICE AND DIAGNOSIS” of “SERVICE PRECAUTIONS” under “ON-VEHICLE SERVICE” in Sec-
tion 10B.
DISABLING AIR BAG SYSTEM
Refer to “DISABLING AIR BAG SYSTEM” of “SERVICE PRECAUTIONS” under “ON-VEHICLE SERVICE” in
Section 10B.
ENABLING AIR BAG SYSTEM
Refer to “ENABLING AIR BAG SYSTEM” of “SERVICE PRECAUTIONS” under “ON-VEHICLE SERVICE” in
Section 10B.
HANDLING AND STORAGE
Refer to “HANDLING AND STORAGE” of “SERVICE PRECAUTIONS” under “ON-VEHICLE SERVICE” in Sec-
tion 10B.
DISPOSAL
Refer to “DISPOSAL” of “SERVICE PRECAUTIONS” under “ON-VEHICLE SERVICE” in Section 10B. WARNING:
If replacing seat belt is necessary, replace buckle and ELR (or webbing) together as a set. This is for
the reason of ensuring locking of tongue plate with buckle.
If these parts are replaced individually, such a locking condition may become unreliable. For this rea-
son, SUZUKI will supply only the spare buckle and ELR (or webbing) in a set part.
WARNING:
When performing service on or around air bag system components or air bag system wiring, disable
the air bag system. Refer to “DISABLING AIR BAG SYSTEM” of “SERVICE PRECAUTIONS” under
“ON-VEHICLE SERVICE” in Section 10B.
Failure to follow procedures could result in possible air bag activation, personal injury or unneeded
air bag system repairs.

RESTRAINT SYSTEM 10-5
FRONT SEAT BELT
WARNING:
Never attempt to disassemble or repair the seat belt pretensioner (retractor assembly). If any abnor-
mality is found, be sure to replace it with new one as an assembly.
Be sure to read “SERVICE PRECAUTIONS”, before starting to work and observe every precaution
during work. Neglecting them may result in personal injury or unactivation of the seat belt preten-
sioner when necessary.
1. Upper anchor 4. BuckleTightening torque
2. Lower anchor 5. Yellow connector (for seat belt pretensioner) (if equipped)
3. Retractor assembly 6. Retractor assembly upper mounting bolt
: After tightening lower bolt, tightening upper bolt

10-6 RESTRAINT SYSTEM
REMOVAL
1) Disconnect negative battery cable at battery.
2) Disable air bag system. Refer to “DISABLING AIR BAG SYSTEM” of “SERVICE PRECAUTIONS” under
“ON-VEHICLE SERVICE” in Section 10B.
3) Remove center pillar lower trim.
4) Disconnect Yellow connector for seat belt pretensioner.
a) Release locking of lock lever.
b) After unlocked, disconnect to connector.
5) Remove front seat belts from the vehicle.
INSPECTION
Seat belts and attaching parts can affect the vital components
and systems of a vehicle.
Therefore, they should be inspected carefully and replaced with
genuine parts only.
Seat belt
Its webbing or strap should be free from damage.
Retractor assembly
It should lock webbing when pulled quickly.
The front seat belt retractor assembly (1) should pass the
above inspection and should lock webbing even when tilted
(approx. 15°) toward the fore and aft or right and left direc-
tions.
Check retractor assembly (1) with seat belt pretensioner
appearance visually for following symptoms and if any one of
them is applicable, replace it with a new one as an assem-
bly.
Pretensioner has activated.
There is a crack in seat belt pretensioner (retractor assem-
bly).
Wire harness or connector (2) is damaged.
Seat belt pretensioner (retractor assembly) is damaged or a
strong impact (e.g., dropping) was applied to it.
Anchor bolt
Anchor bolts should be torqued to specification.
Belt latch
It should be secure when latched. WARNING:
Never measure resistance of pretensioner or disassem-
ble it. Otherwise, personal injury may result.
CAUTION:
If seat belt pretensioner (retractor assembly) was
dropped from a height of 30 cm (1 ft) or more, it should
be replaced.

RESTRAINT SYSTEM 10-7
INSTALLATION
Install in reverse order of removal, noting the following.
Seat belt anchor bolts should have an unified fine thread (7/
16-20 UNF). Under no circumstances should any different
sized or metric screw threads be used.
Connect Yellow connector (1) for seat belt pretensioner
securely and fit seat belt pretensioner connector onto body.
a) Connect connector
b) Lock connector with lock lever
Enable air bag system. Refer to “ENABLING AIR BAG SYS-
TEM” under “SERVICE PRECAUTIONS” in Section 10B.

10-8 RESTRAINT SYSTEM
REAR SEAT BELT
REMOVAL
Remove rear seat belts as shown in figure.
INSPECTION
Check the rear seat belt in the same way as “INSPECTION” of “FRONT SEAT BELT”.
INSTALLATION
Install the rear seat belt observing the same precautions as “INSTALLATION” of “FRONT SEAT BELT”. WARNING:
Be sure to read “SERVICE PRECAUTIONS” before starting to work and observe every precaution dur-
ing work.
1. Upper anchor 4. Buckle
2. Lower anchor Tightening torque
3. Retractor assembly

AIR BAG SYSTEM 10B-1
6F1
6F2
6G
6H
6K
7A
7A1
7B1
7C1
7D
7E
7F
8A
8B
8C
8D
8E
9
10
10B
SECTION 10B
AIR BAG SYSTEM
CONTENTS
GENERAL DESCRIPTION .............................10B-3
SYSTEM COMPONENTS AND WIRING
LOCATION VIEW AND CONNECTORS..... 10B-4
SYSTEM WIRING DIAGRAM ..................... 10B-5
DIAGNOSIS ....................................................10B-6
DIAGNOSTIC TROUBLE CODE (DTC) ...... 10B-6
USE OF SPECIAL TOOL ............................ 10B-6
INTERMITTENTS AND POOR
CONNECTIONS .......................................... 10B-8
AIR BAG DIAGNOSTIC SYSTEM CHECK . 10B-9
AIR BAG DIAGNOSTIC SYSTEM
CHECK FLOW TABLE .............................. 10B-10
DTC CHECK ............................................. 10B-11
DTC CLEARANCE .................................... 10B-12
DTC TABLE .............................................. 10B-13
TABLE A - “AIR BAG” WARNING LAMP
COMES ON STEADY ............................... 10B-15
TABLE B - “AIR BAG” WARNING LAMP
DOES NOT COME ON ............................. 10B-15
TABLE C - “AIR BAG” WARNING LAMP
FLASHES .................................................. 10B-15
TABLE D - “AIR BAG” WARNING LAMP
CANNOT INDICATE FLASHING
PATTERN OF DTC ................................... 10B-15TABLE E - SDM CANNOT COMMUNICATE
THROUGH THE SERIAL DATA
CIRCUIT ................................................... 10B-21
DTC B1015 - PASSENGER AIR BAG
INITIATOR CIRCUIT RESISTANCE
HIGH ......................................................... 10B-23
DTC B1016 - PASSENGER AIR BAG
INITIATOR CIRCUIT RESISTANCE
LOW .......................................................... 10B-23
DTC B1018 - PASSENGER AIR BAG
INITIATOR CIRCUIT SHORT TO
GROUND .................................................. 10B-23
DTC B1019 - PASSENGER AIR BAG
INITIATOR CIRCUIT SHORT TO
POWER CIRCUIT ..................................... 10B-23
DTC B1021 – DRIVER AIR BAG
INITIATOR CIRCUIT RESISTANCE
HIGH ......................................................... 10B-29
DTC B1022 – DRIVER AIR BAG
INITIATOR CIRCUIT RESISTANCE
LOW .......................................................... 10B-29
DTC B1024 – DRIVER AIR BAG
INITIATOR CIRCUIT SHORT TO
GROUND .................................................. 10B-29 WARNING:
Service on or around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Please observe all WARNINGS and “Service Precautions” under “On-
Vehicle Service” in this section before performing service on or around the air bag system compo-
nents or wiring. Failure to follow WARNINGS could result in unintended activation of the system or
could render the system inoperative. Either of these two conditions may result in severe injury.
The procedures in this section must be followed in the order listed to disable the air bag system
temporarily and prevent false diagnostic trouble codes from setting. Failure to follow procedures
could result in possible activation of the air bag system, personal injury or otherwise unneeded air
bag system repairs.
CAUTION:
When fasteners are removed, always reinstall them at the same location from which they were
removed. If a fastener needs to be replaced, use the correct part number fastener for that application.
If the correct part number fastener is not available, a fastener of equal size and strength (or stronger)
may be used. Fasteners that are not reused, and those requiring thread-locking compound, will be
called out. The correct torque value must be used when installing fasteners that require it. If the above
conditions are not followed, parts or system damage could result.

10B-2 AIR BAG SYSTEM
DTC B1025 – DRIVER AIR BAG
INITIATOR CIRCUIT SHORT TO POWER
CIRCUIT ................................................... 10B-29
DTC B1032 – POWER SOURCE
VOLTAGE LOW ........................................ 10B-36
DTC B1041 – DRIVER PRETENSIONER
INITIATOR CIRCUIT RESISTANCE
HIGH ......................................................... 10B-38
DTC B1042 – DRIVER PRETENSIONER
INITIATOR CIRCUIT RESISTANCE
LOW .......................................................... 10B-38
DTC B1043 – DRIVER PRETENSIONER
INITIATOR CIRCUIT SHORT TO
GROUND .................................................. 10B-38
DTC B1044 – DRIVER PRETENSIONER
INITIATOR CIRCUIT SHORT TO
POWER CIRCUIT ..................................... 10B-38
DTC B1045 – PASSENGER
PRETENSIONER INITIATOR CIRCUIT
RESISTANCE HIGH ................................. 10B-38
DTC B1046 – PASSENGER
PRETENSIONER INITIATOR CIRCUIT
RESISTANCE LOW .................................. 10B-38
DTC B1047 – PASSENGER
PRETENSIONER INITIATOR CIRCUIT
SHORT TO GROUND .............................. 10B-38
DTC B1048 – PASSENGER
PRETENSIONER INITIATOR CIRCUIT
SHORT TO POWER CIRCUIT ................. 10B-38
DTC B1051 – FRONTAL CRASH
DETECTED (SYSTEM ACTIVATION
COMMAND OUTPUTTED) ....................... 10B-44
DTC B1071 - INTERNAL SDM FAULT ..... 10B-45
DTC B1013 – SYSTEM
SPECIFICATIONS DIFFERENT FROM SDM SPECIFICATIONS ........................... 10B-45
ON-VEHICLE SERVICE............................... 10B-46
SERVICE PRECAUTIONS ....................... 10B-46
SERVICE AND DIAGNOSIS................. 10B-46
DISABLING AIR BAG SYSTEM ........... 10B-47
ENABLING AIR BAG SYSTEM ............ 10B-47
HANDLING AND STORAGE ................ 10B-48
REPAIRS AND INSPECTIONS
REQUIRED AFTER AN ACCIDENT......... 10B-53
ACCIDENT WITH DEPLOYMENT/
ACTIVATION - COMPONENT
REPLACEMENT ....................................... 10B-53
ACCIDENT WITH OR WITHOUT
DEPLOYMENT/ACTIVATION -
COMPONENT INSPECTIONS ................. 10B-53
SDM .......................................................... 10B-56
DRIVER AIR BAG (INFLATOR)
MODULE .................................................. 10B-59
CONTACT COIL AND COMBINATION
SWITCH ASSEMBLY ............................... 10B-59
SEAT BELT PRETENSIONER (IF
EQUIPPED) .............................................. 10B-59
AIR BAG (INFLATOR) MODULE AND
SEAT BELT PRETENSIONER
DISPOSAL ................................................... 10B-60
DEPLOYMENT/ACTIVATION OUTSIDE
VEHICLE .................................................. 10B-61
DEPLOYMENT/ACTIVATION INSIDE
VEHICLE .................................................. 10B-67
DEPLOYED AIR BAG (INFLATOR)
MODULE AND ACTIVATED SEAT BELT
PRETENSIONER DISPOSAL .................. 10B-70
SPECIAL TOOL ........................................... 10B-71