SUZUKI GRAND VITARA 1999 2.G Owners Manual

10A-2 SEAT BELT
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, latch plate and ELR.
•Do not bleach or dye belt webbing. (Use only mild soap and lukewarm water to clean it.)
•When installing a seat belt anchor bolt, start bolt by hand to prevent cross-threading.
•Use only the correct seat belt anchor bolts and screws and tighten to the correct torque value.
•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 reason, 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.

SEAT BELT 10A-3
Front Seat Belt
INSPECTION ON VEHICLE
Seat belts with ALR
As to seat belts with ALR (other than driver side seat belt), check them as follows in addition to above check.
•With vehicle at stop, pull seat belt all the way out, let it retract a little and try to pull it. It should not be pulled
out, that is, it should be locked where retracted.
•Let seat belt retract to its original state. Next, pull it half way out, let it retract a little and try to pull it again. It
should be pulled out smoothly, that is it should not be locked at this time.
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, if necessary.
1. Upper anchor 4. Buckle Tightening Torque
2. Lower anchor 5. Retractor assembly upper mounting bolt
: After tightening lower bolt, tightening upper bolt[A] Removal
3. Retractor assembly 6. Yellow connector for seat belt pretensioner
(if equipped)[B] Installation

10A-4 SEAT BELT
REMOVAL
1) Disconnect negative cable at battery.
2) Disable air bag system referring to “DISABLING AIR BAG SYSTEM” of “SERVICE PRECAUTIONS” under
“ON-VEHICLE SERVICE” in Section 10B, if necessary.
3) Remove front pillar lower trim.
4) Disconnect Yellow connector for seat belt pretensioner, if necessary.
a) Release locking of lock lever.
b) After unlocking, 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
•The seat belt webbing or strap should be free from damage.
•Fully extend the seat belt to make sure there are no twists or tears in it.
Retractor assembly
1) Let the seat belt retract fully to confirm its easy retraction.
•The retractor assembly should lock webbing when pulled quickly.
•The retractor assembly should lock webbing even when tilted (approx. 15°) toward the fore and aft or right
and left directions.
2) Check retractor assembly 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 assembly.
•Pretensioner has activated.
•There is a crack in seat belt pretensioner (retractor assembly).
•Wire harness or connector is damage.
•Seat belt pretensioner (retractor assembly) is damaged or a strong impact (e.g., dropping) was applied to it.
Anchor bolt
•Inspect all seat belt anchor bolts to verify that they are secure.
•All anchor bolts should be secure and torqued to specification.
Belt latch
•Belt latch should be secure when latched.
•Inspect the seat belt buckle, ensuring that it locks and unlocks easily.
•After buckling the seat belt, tug sharply on the belt, checking that the buckle remains locked.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.

SEAT BELT 10A-5
Seat belt switch
Check driver side seat belt strap switch for continuity by using
ohmmeter.
Seat belt strap switch specification
Without inserted buckle tongue to buckle catch:
Terminal “A” and “B” : Continuity
With inserted buckle tongue to buckle catch:
Terminal “A” and “B” : No continuity (∞Ω
∞Ω∞Ω ∞Ω)
INSTALLATION
Install in reverse order of removal, noting the followings.
•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 for seat belt pretensioner securely and fit seat belt pretensioner connector onto
front pillar lower panel, if necessary.
a) Connect connector
b) Lock connector with lock lever
•Enable air bag system referring to “ENABLING AIR BAG SYSTEM” under “SERVICE PRECAUTIONS” in
Section 10B, if necessary.
1. Buckle tongue
2. Buckle catch

10A-6 SEAT BELT
Second Rear Seat Belt
REMOVAL
Refer to the figure above to remove rear seat belts.
INSPECTION
Check second rear seat belt in the same way as when inspecting front seat belt except pretesioner inspection.
(Refer to “FRONT SEAT BELT” in this section.)
INSTALLATION
Install in reverse order of removal, noting the followings.
•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. WARNING:
Be sure to read “SERVICE PRECAUTIONS” in this section before starting to work and observe every
precaution during work.
1. Upper anchor 4. Buckle
2. Lower anchor Tightening Torque
3. Retractor assembly
2
35 N·m (3.5 kg-m, 25.5 lb-ft)
35 N·m (3.5 kg-m, 25.5 lb-ft)
35 N·m (3.5 kg-m, 25.5 lb-ft)
35 N·m (3.5 kg-m,
25.5 lb-ft)
4
4
4

SEAT BELT 10A-7
Third Rear Seat Belt (If Equipped)
REMOVAL
Refer to the figure above to remove rear seat belts.
INSPECTION
Check third rear seat belt in the same way as when inspecting second rear seat belt. (Refer to “SECOND REAR
SEAT BELT” in this section.)
INSTALLATION
Install in reverse order of removal, noting the followings.
•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. WARNING:
Be sure to read “SERVICE PRECAUTIONS” in this section before starting to work and observe every
precaution during work.
1. Upper anchor 4. Buckle
2. Lower anchor Tightening Torque
3. Retractor assembly
35 N·m (3.5 kg-m,
25.5 lb-ft)
35 N·m (3.5 kg-m,
25.5 lb-ft)
35 N·m (3.5 kg-m, 25.5 lb-ft)
4
4
(a)
(a)

10A-8 SEAT BELT
Tightening Torque Specification
Fastening partTightening torque
Nm kg-m lb-ft
Upper and lower anchor bolt 35 3.5 25.5
Retractor assembly bolt 35 3.5 25.5
Retractor assembly screw 5.5 0.55 4.0
Buckle bolt 35 3.5 25.5

AIR BAG SYSTEM 10B-1
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-14
Table A - “AIR BAG” Warning Lamp
Comes ON Steady .................................... 10B-16
Table B - “AIR BAG” Warning Lamp Does
Not Come ON ............................................ 10B-16
Table C - “AIR BAG” Warning Lamp
Flashes ...................................................... 10B-16Table D - “AIR BAG” Warning Lamp
Cannot Indicate Flashing Pattern of DTC . 10B-16
Table 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-28
DTC B1022 – Driver Air Bag Initiator
Circuit Resistance Low ............................. 10B-28
DTC B1024 – Driver Air Bag Initiator
Circuit Short to Ground ............................. 10B-28
DTC B1025 – Driver Air Bag Initiator
Circuit Short to Power Circuit .................... 10B-28 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.
NOTE:
For the descriptions (items) not found in this section, refer to the same section of the Service Manual
mentioned in the FOREWORD of this manual.

10B-2 AIR BAG SYSTEM
DTC B1031 – Power Source Voltage
High........................................................... 10B-33
DTC B1032 – Power Source Voltage
Low ........................................................... 10B-33
DTC B1035 – RH Forward Sensor Circuit
Open or Short to Ground .......................... 10B-36
DTC B1036 – RH Forward Sensor Circuit
Short Between Two Wires or Short to
Power Circuit............................................. 10B-36
DTC B1037 – LH Forward Sensor Circuit
Open or Short to Ground .......................... 10B-36
DTC B1038 – LH Forward Sensor Circuit
Short Between Two Wires or Short to
Power Circuit............................................. 10B-36
DTC B1041 – Driver Pretensioner Initiator
Circuit Resistance High............................. 10B-40
DTC B1042 – Driver Pretensioner Initiator
Circuit Resistance Low ............................. 10B-40
DTC B1043 – Driver Pretensioner Initiator
Circuit Short to Ground ............................. 10B-40
DTC B1044 – Driver Pretensioner Initiator
Circuit Short to Power Circuit .................... 10B-40
DTC B1045 – Passenger Pretensioner
Initiator Circuit Resistance High ................ 10B-40
DTC B1046 – Passenger Pretensioner
Initiator Circuit Resistance Low................. 10B-40
DTC B1047 – Passenger Pretensioner
Initiator Circuit Short to Ground ................ 10B-40
DTC B1048 – Passenger Pretensioner
Initiator Circuit Short to Power Circuit ....... 10B-40
DTC B1051 – Frontal Crash Detected
(System Activation Command Outputted). 10B-46DTC B1061 – “AIR BAG” Warning Lamp
Circuit Failure............................................ 10B-47
DTC B1071 – Internal SDM Fault ............. 10B-48
DTC B1013 – System Specifications
Different from SDM Specifications ............ 10B-48
On-Vehicle Service ..................................... 10B-49
Service Precautions .................................. 10B-49
Service and diagnosis ........................... 10B-49
Disabling air bag system ....................... 10B-50
Enabling air bag system........................ 10B-50
Handling and storage ............................ 10B-51
Repairs and Inspections Required after
an Accident ............................................... 10B-56
Accident with deployment/activation -
component replacement ....................... 10B-56
Accident with or without deployment/
activation - component inspections....... 10B-57
SDM .......................................................... 10B-60
Forward Sensor ........................................ 10B-62
Seat Belt Pretensioner .............................. 10B-64
Air Bag (Inflator) Module and Seat Belt
Pretensioner Disposal................................ 10B-65
Deployment/Activation Outside Vehicle .... 10B-66
Deployment/Activation Inside Vehicle....... 10B-72
Deployed Air Bag (Inflator) Module and
Activated Seat Belt Pretensioner
Disposal .................................................... 10B-76
Tightening Torque Specification............... 10B-77
Special Tool ................................................ 10B-77

AIR BAG SYSTEM 10B-3
General Description
With the air bag system which includes air bags for both the
driver’s and passenger’s sides as well as the seat belt pretension-
ers (if equipped), 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.
The air bag system is designed to activate only in severe frontal
collisions. It is not designed to activate in rear impacts, side
impacts, rollovers, or minor frontal collisions, since it would offer
no protection in those types of accidents.
1. Driver side air bag
2. Passenger side air bag
3. Seat belt pretensioner (if equipped)