1999 SUZUKI GRAND VITARA acc

YH4
GRAND
VITARA
10-2 RESTRAINT SYSTEM
Driver Side Seat Belt: Seat belt with ELR
Front Passenger Side Seat And
Rear Left And Right Seat Belts: Seat belt with A-ELR
Rear Center Seat Belt (If Equipped): Seat belt without ELR and A-ELR
Supplemental Restraint System: Driver and front passenger side air bags
1. Driver side seat belt
2. Front passenger side seat belt
3. Rear left seat belt
4. Rear right seat belt
5. Rear center seat belt (If equipped)
6. Driver side air bag
7. Passenger side air bag
GENERAL DESCRIPTION
Seat belt with ELR
The seat belt with Emergency Locking Retractor (ELR) is designed so that it locks immediately (to prevent the web-
bing from being pulled out of the retractor any further) when any of the following items is detected as exceeding
each set value; speed at which the webbing is pulled out of the retractor, acceleration or deceleration of the vehicle
speed, and inclination.
Seat belt with A-ELR
The automatic and emergency locking retractor (A-ELR) works as an Emergency Locking Retractor (ELR) till its
webbing is pulled all the way out and then on as an Automatic Locking Retractor (ALR) till it is retracted fully.
ALR: Automatically locks when the webbing is pulled out from the retractor and allowed to retract even a little.
Then the webbing can not be pulled out any further, unless it is wound all the way back into the retractor, which
releases the lock and allows the webbing to be pulled out.
Driver and front passenger side air bags
The driver and front passenger side air bags are components of the air bag system. In occurrence of a front collision
with an impact larger than a certain set value, they are activated by the ignition signal from SDM to supplement
protection offered by the driver and front passenger seat belts.

the driver air bag (inflator) module is deployed from the center of the steering column

the passenger air bag (inflator) module from the top of the instrument panel in front of the front passenger seat
For more information, refer to SECTION 10B ªAir Bag Systemº.

YH4
GRAND
VITARA
10B-2 AIR BAG SYSTEM
Code 46 - Passenger pretensioner
initiator circuit resistance low 10B-46. . . . . . .
Code 43 - Driver pretensioner initiator
circuit short to ground 10B-48. . . . . . . . . . . . .
Code 47 - Passenger pretensioner
initiator circuit short to ground 10B-48. . . . . .
Code 44 - Driver pretensioner initiator
circuit short to power circuit 10B-50. . . . . . . .
Code 48 - Passenger pretensioner
initiator circuit short to power circuit 10B-50.
Code 51 - Frontal crash detected
(System activation command is
outputted) 10B-52. . . . . . . . . . . . . . . . . . . . . . .
Code 61 -ªAIR BAGº warning lamp
circuit failure 10B-53. . . . . . . . . . . . . . . . . . . . .
Code 71 - Internal SDM fault 10B-54. . . . . . . .
ON-VEHICLE SERVICE10B-55 . . . . . . . . . . . . . . .
Service Precautions 10B-55. . . . . . . . . . . . . . . . .
Service and diagnosis 10B-55. . . . . . . . . . . . . .
Disabling air bag system 10B-56. . . . . . . . . . . .
Enabling air bag system 10B-56. . . . . . . . . . . .
Handling and storage 10B-57. . . . . . . . . . . . . .
Disposal 10B-62. . . . . . . . . . . . . . . . . . . . . . . . . .
Repairs and Inspections Required
after an Accident 10B-63. . . . . . . . . . . . . . . . . . .
Accident with deployment
- component replacement 10B-63. . . . . . . . . . Accident with or without deployment
- component inspections 10B-64. . . . . . . . . . .
Driver Air Bag (Inflator) Module 10B-66. . . . . . . .
Contact Coil and Combination Switch
Assembly 10B-66. . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Pretensioner 10B-66. . . . . . . . . . . . . . .
ªAIR BAGº Warning Lamp 10B-66. . . . . . . . . . . .
SDM 10B-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passenger Air Bag (Inflator) Module 10B-69. . .
AIR BAG (INFLATOR) MODULES
DISPOSAL10B-71 . . . . . . . . . . . . . . . . . . . . . . . . . .
Deployment Outside Vehicle 10B-71. . . . . . . . . .
Deployment Inside Vehicle 10B-78. . . . . . . . . . . .
SEAT BELT PRETENSIONERS
DISPOSAL10B-83 . . . . . . . . . . . . . . . . . . . . . . . . . .
Activation Outside Vehicle 10B-83. . . . . . . . . . . .
Activation Inside Vehicle 10B-89. . . . . . . . . . . . . .
DEPLOYED AIR BAG (INFLATOR)
MODULES DISPOSAL10B-93 . . . . . . . . . . . . .
ACTIVATED SEAT BELT PRETENSIONERS
DISPOSAL10B-94 . . . . . . . . . . . . . . . . . . . . . . . .
TIGHTENING TORQUE
SPECIFICATIONS10B-95 . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS10B-95 . . . . . . . . . . . . . . . . . . . .

YH4
GRAND
VITARA
12
3
3
1. Driver side air bag
2. Passenger side air bag
3. Seat belt pretensioner
(if equipped)
1-1. SDM
1-1. Sensor
1-2. Voltage converter1-3. Safing sensor
1-4. Micro-controller
1-5. Energy reserve circuit1-6. Ignition driver circuit
1-2. Power source
3. Driver air bag 4. Passenger air bag
5. Seat belt pretensioner (if equipped)
6. Squib circuit
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 pretensioners (if
equipped), the sag of the seat belt is taken up, the driver air bag (in-
flator) 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 col-
lisions. It is not designed to activate in rear impacts, side impacts,
rollovers, or minor frontal collisions, since it would offer no protec-
tion in those types of accidents.

YH4
GRAND
VITARA
AIR BAG SYSTEM 10B-11
AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLE
STEPACTIONYESNO
11) Make sure that battery voltage is about
11V or higher.
2) Note ªAIR BAGº warning lamp as ignition
switch is tuned ON.
3) Does ªAIR BAGº warning lamp flash
6 times when ignition switch is tuned ON?Go to step 2.ªAIR BAGº warning lamp
does not come ªONº
Proceed to ªTable Bº
on p.10B-18.
2Does ªAIR BAGº warning lamp keep flashing
(indicating DTC) when ignition switch is
turned ON ?ªAIR BAGº warning
lamp flashes
Proceed to ªTable Cº
on p.10B-20.Go to step 3.
3After flashing 6 times then does
ªAIR BAGº warning lamp turn OFF?Go to step 4.Go to step 5.
41) Check DTC, referring to ªDiagnostic
Trouble Code (DTC) Checkº on
p.10B-12.
2) [Using SUZUKI scan tool]
Is ªNO CODESº displayed ?
NOTE:
If SDM cannot communicate through
serial data circuit, proceed to ªTable
Dº on p.10B-22.
[Not using SUZUKI scan tool]
Is DTC 12 indicated ?Air bag system is in
good condition.NOTE:
As execution of the ªDiag-
nostic Trouble Code (DTC)
Clearanceº will clear all
DTCs, be sure to record all
DTCs before servicing.
An intermittent trouble has
occurred at some place.
Check the connector
harness, etc. related to the
sensed DTC (Refer to
ªIntermittent and Poor
Connectionsº in this section.).
Then clear DTC (Refer to
p.10B-13.) and repeat this
table.
51) Check DTC, referring to ªDiagnostic
Trouble Code (DTC) Checkº on
p.10B-12.
2) [Using SUZUKI scan tool]
Is ªNO CODESº displayed ?
NOTE:
If SDM cannot communicate through
serial data circuit, proceed to ªTable
Dº on p.10B-22.
[Not using SUZUKI scan tool]
Is DTC 12 indicated ?ªAIR BAGº warning
lamp come ªONº
steady
Proceed to ªTable Aº on
p.10B-16.NOTE:
As execution of the ªDiag-
nostic Trouble Code (DTC)
Clearanceº will clear all
DTCs, be sure to record all
DTCs before servicing.
Check and repair according
to Flow Table corresponding
to that DTC.

YH4
GRAND
VITARA
10B-12 AIR BAG SYSTEM
1. Data link connector (DLC)
2. DLC cable adapter
3. DLC cable
-1. ªAIR BAGº
warning lamp
-2. ªAIR BAGº fuse box
-3. ªAIR BAGº
monitor coupler
3-1. Diagnostic switch
terminal
-4. Air bag harness
(covered yellow tube)
EXAMPLE: When driver air bag initiator circuit resistance high (Code No.21) is set
Malfunction indicator lamp
(ªAIR BAGº warning lamp)
Turn ON
Turn OFF
Time (sec.) Code No. 21 Code No. 21 Code No. 21 1
DIAGNOSTIC TROUBLE CODE (DTC) CHECK
[Using SUZUKI scan tool]
1) Turn ignition switch OFF.
2) After setting cartridge to Tech 1, connect it to data link connector
(DLC) located on underside of instrument panel at driver's seat
side.
Special Tool
(A): 09931-76011 (Tech 1)
(B): Mass storage cartridge
(C): 09931-76030
3) Turn ignition switch ON.
4) Read DTC according to instructions displayed on Tech 1 and
print it or write it down. Refer to Tech 1 operator's manual for fur-
ther details.
5) After completing the check, turn ignition switch OFF and discon-
nect Tech 1 from data link connector (DLC).
[Not using SUZUKI scan tool]
1) Check that malfunction indicator lamp (ªAIR BAGº warning
lamp) comes ON when ignition switch is turned ON.
If it does not come ªONº, proceed to ªTable Bº on p.10B-18.
2) Using service wire, ground diagnosis switch terminal in monitor
coupler.
3) Read DTC from flashing pattern of malfunction indicator lamp
(ªAIR BAGº warning lamp). (Refer to ªDiagnostic Trouble Code
Tableº on p.10B-14 and 10B-15.)
4) After completing the check, turn ignition switch OFF and discon-
nect service wire from ªAIR BAGº monitor coupler.

YH4
GRAND
VITARA
1. Data link connector
2. DLC cable adapter
3. DLC cable
1sec. 1sec.About 10 seconds
Open
Short-1. ªAIR BAGº warning lamp
-2. ªAIR BAGº fuse box
-3. ªAIR BAGº monitor coupler
3-1. Diagnostic switch terminal
-4. Air bag harness (covered yellow tube)1
AIR BAG SYSTEM 10B-13
DIAGNOSTIC TROUBLE CODE (DTC) CLEARANCE
[Using SUZUKI scan tool]
1) Turn ignition switch OFF.
2) Connect Tech 1 to data link connector (DLC) in the same manner
as when making this connection for DTC check.
Special Tool
(A): 09931-76011 (Tech 1)
(B): Mass storage cartridge
(C): 09931-76030
3) Turn ignition switch ON.
4) Erase DTC according to instructions displayed on Tech 1.
Refer to Tech 1 operator's manual for further details.
5) After completing the check, turn ignition switch OFF and discon-
nect Tech 1 from data link connector (DLC).
6) Perform ªDiagnosis Trouble Code (DTC) Checkº and confirm
that normal DTC (NO CODES) is displayed and not malfunction
DTC.
NOTE:
If DTC 51 or DTC 71 is stored in SDM, it is not possible to
clear DTC.
[Not using SUZUKI scan tool]
1) Turn ignition switch ON and wait about 6 seconds or more.
2) Using service wire, repeat shorting and opening between diag-
nosis switch terminal and ground terminal on ªAIR BAGº monitor
coupler 5 times at about 1 second intervals.
3) Perform ªDiagnosis Trouble Code (DTC) Checkº and confirm
that normal DTC (DTC 12) is displayed and not malfunction
DTC.
NOTE:
If DTC 51 or DTC 71 is stored in SDM, it is not possible to
clear DTC.

YH4
GRAND
VITARA
10B-14 AIR BAG SYSTEM
DIAGNOSTIC TROUBLE CODE TABLE (Page 1 of 2)
EXAMPLE: WHEN DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE HIGH (CODE NO.21) IS SET
Turn ON
Turn OFF
0.30.3 1.0 3.0 3.0 Malfunction indicator lamp
(ªAIR BAGº warning lamp)Code No. 21 Code No. 21 Code No. 21
Time (sec.)
DIAGNOSTIC TROUBLE CODEDIAGNOSISNO.MODEDIAGNOSIS
12Normal±±±±±
15Resistance high
16Passenger
air bag
Resistance low
18
air bag
circuitShort to ground
19Short to power circuit
21Resistance high
Diagnose trouble
according to ªDiagnos-
tic Flow Tableºcorre-
22
Driver air bag
Resistance low
tic Flow Table corre-
sponding to each code
No.
24
g
circuitShort to ground
25Short to power circuit
31Power
source
Too high
32
source
voltageToo low

YH4
GRAND
VITARA
AIR BAG SYSTEM 10B-15
DIAGNOSTIC TROUBLE CODE TABLE (Page 2 of 2)
DIAGNOSTIC TROUBLE CODEDIAGNOSISNO.MODEDIAGNOSIS
41Resistance high
42Driver
pretensionerResistance low
43circuit
(if equipped)Short to ground
44Short to power circuit
45Resistance highDiagnose trouble
di t ªDi
46Passenger
pretensionerResistance low
according to ªDiagnos-
tic Flow Tableº corre-
sponding to each code
47circuit
(if equipped)Short to ground
s onding to each code
No.
48Short to power circuit
51SDMFrontal crash detected
61ªAIR BAGº warning lamp circuit
71SDMInternal fault
NOTE:

When 2 or more codes are indicated, the lowest numbered code will appear first.

If a code not listed on the table is displayed, then the SDM is faulty.

Current DTC and history DTC can be identified by lighting and flashing of ªAIR BAGº warning lamp as
follows.
Current DTC is set.
(Abnormality exists at present.)History DTC is set only. (Faulty condi-
tion occurred once in the past but nor-
mal condition is restored at present.)
ªAIR BAGº warning lamp
after ignition switch ONRemains ON.Flashing 6 times and turns OFF.
ªAIR BAGº warning lamp
when grounding diagnosis
switch
Current DTC is displayed.History DTC is displayed.
However, if a multiple number of DTC's are set an even one of them is a current DTC, ªAIR BAGº warning
lamp remains on after ignition switch is turned ON. Therefore, it is not possible to identify any of them
as to whether it is a current one or a history one. (But use of scan tool (Tech 1) will make identification
possible.)