Main fuse SUZUKI GRAND VITARA 1999 2.G Owner's Guide

AIR BAG SYSTEM 10B-5
System Wiring Diagram
TERMINAL ARRANGEMENT OF SDM (VIEWED FROM HARNESS SIDE)
CONNECTOR “Q01” (SDM connector)
1
2
35
4 BLK/BLUBLU/BLK BLU/RED
BLK/WHT
BLU BLUGRN/RED
GRN GRNWHT WHT
GRN
YEL/RED
YEL
PNK
WHT
BRN
LT GRN
6
12V
5V 5V PPL/RED
ORN/GRN
ORN/BLU
YEL/GRN
YEL/BLUORN/GRN
ORN/BLU
YEL/GRN
YEL/BLUORN/GRN
ORN/BLU
YEL/GRN
YEL/BLUPPL/RED
87
“G27”
“E12”18 17“Q02”
“Q11” “Q12”9
10PPL
BLK
“Q04”
Q01-2
Q01-4
Q01-20Q01-7
Q01-8 Q01-10
Q01-9
Q01-12
Q01-11
Q01-5
Q01-6
Q01-15
Q01-17L1
L2 IG
SDL
Q01-19
SL+
Q01-18
SL-
Q01-13
SR+
Q01-14
SR-
DNS
GNDLA
PP- PP+DP- DP+P- P+D- D+
“Q07”
“Q06”“Q01”“Q05”
15
161413
12 11
[A]
[B]
[C]
“Q01” “Q12”,“G03”, “G27”,“E12”
“Q01”
BLK/WHT
“Q03”
“G03”
[A]: Shorting bar 6. Connection detection pin 14. Passenger air bag (inflator) module
[B]: Air bag harness 7. To ECM, TCM (if equipped) and ABS control
module (if equipped) 15. Driver seat belt pretensioner (if equipped)
[C]: Connector 8. To data link connector (DLC) 16. Passenger seat belt pretensioner (if equipped)
1. From main fuse 9.“AIR BAG” monitor coupler 17. LH Forward sensor
2. Ignition switch 10. Ground for air bag system 18. RH Forward sensor
3.“IG METER” fuse 11. SDM 19. To seat belt switch
4.“AIR BAG” warning lamp in combination meter 12. Contact coil assembly
5.“AIR BAG” fuse 13. Driver air bag (inflator) module
1. CONNECTOR “Q01” (SDM CONNECTOR)
TERMINAL CIRCUIT TERMINAL CIRCUIT
Q01-1–Q01-11
Driver pretensioner
(if equipped)Low
Q01-2“AIR BAG” warning lamp Q01-12 High
Q01-3–Q01-13
RH Forward sensorHigh
Q01-4 Ignition switch (power source) Q01-14 Low
Q01-5
Passenger pretensioner
(if equipped)High Q01-15 Diagnosis switch
Q01-6 Low Q01-16–
Q01-7 Passenger air bag (inflator)
moduleHigh Q01-17 Ground
Q01-8 Low Q01-18
LH Forward sensorLow
Q01-9 Driver air bag (inflator)
moduleLow Q01-19 High
Q01-10 High Q01-20 Data link connector (DLC)

10B-16 AIR BAG SYSTEM
Table A - “AIR BAG” Warning Lamp Comes ON Steady
Table B - “AIR BAG” Warning Lamp Does Not Come ON
Table C - “AIR BAG” Warning Lamp Flashes
Table D - “AIR BAG” Warning Lamp Cannot Indicate Flashing Pattern of DTC
WIRING DIAGRAM
1. From main fuse 5.“AIR BAG” fuse 9. To ECM, TCM (if equipped) and ABS control
module (if equipped)
2. Ignition switch 6. Connection detection pin 10.“AIR BAG” monitor coupler
3.“IG METER” fuse 7. SDM 11. Ground for air bag system
4.“AIR BAG” warning lamp in combination meter 8. To DLC [A]: Air bag harness
1
2
34 BLK/BLUBLU/BLK BLU/RED
BLK/WHT BLK/WHTBLUBLU
6
PPL/REDPPL/RED
8
9
10
11
PPL
BLK
“Q04”
“Q01”
Q01-2
Q01-20
Q01-15
Q01-17L1
L2
SDL
DNS
GNDLA
Q01-4
IG
7
[A]
12V
5V
“G27”“Q02”
5
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

AIR BAG SYSTEM 10B-21
Table E - SDM Cannot Communicate through The Serial Data Circuit
WIRING DIAGRAM
TABLE TEST DESCRIPTION
STEP 1 : An improper connection to the data link connector (DLC) will prevent communications from being
established.
STEP 2 : This test checks whether it is possible to communicate with other control module.
STEP 3 : This test checks for an open in “PPL/RED” circuit (in air bag harness).
[A]: Air bag harness 5.“AIR BAG” fuse 10.“AIR BAG” monitor coupler
1. From main fuse 6. Connection detection pin 11. Ground for air bag system
2. Ignition switch 7. SDM 12. Ground on body
3.“IG METER” fuse 8. DLC 13. Ground on Engine block
4.“AIR BAG” warning lamp in combination lamp 9. To ECM, TCM (if equipped) and ABS con-
trol module (if equipped)14. Immobilizer control module (if equipped)
14
1PPL/WHT
BLK
BLK/YEL WHT
10
11
PPL
BLK
“Q04”Q01-15
Q01-17DNS
GND7
[A]5V
812
13
1
2
34 BLK/BLUBLU/BLK BLU/RED
BLK/WHT BLK/WHTBLUBLU
6
PPL/REDPPL/RED
9
Q01-2
Q01-20L1
L2
SDLLA
Q01-4
IG
12V
“G27”
“Q02”
5
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

AIR BAG SYSTEM 10B-23
DTC B1015 - Passenger Air Bag Initiator Circuit Resistance High
DTC B1016 - Passenger Air Bag Initiator Circuit Resistance Low
DTC B1018 - Passenger Air Bag Initiator Circuit Short to Ground
DTC B1019 - Passenger Air Bag Initiator Circuit Short to Power Circuit
WIRING DIAGRAM
DTC WILL SET WHEN
DTC B1015 :
The combined resistance of the passenger air bag (inflator) module, harness wiring and connector terminal con-
tact is above a specified value for specified time.
DTC B1016 :
The combined resistance of the passenger air bag (inflator) module, harness wiring and connector terminal con-
tact is below a specified value for specified time.
DTC B1018 :
The voltage measured at passenger air bag initiator circuit is below a specified value for specified time.
DTC B1019 :
The voltage measured at passenger air bag initiator circuit is above a specified value for specified time.
TABLE TEST DESCRIPTION
DTC B1015, B1016, B1018 and B1019 :
STEP 1 : Check whether malfunction is in passenger air bag (inflator) module.
STEP 2 : Check passenger air bag (inflator) module initiator circuit in air bag harness.
STEP 3 : Check passenger air bag (inflator) module initiator circuit in air bag harness. (for DTC B1019 only)
[A]: Shorting bar 1. From main fuse 3.“AIR BAG” fuse 5. Passenger air bag (inflator) module
[B]: Air bag harness 2. Ignition switch 4. SDM 6. Ground for air bag system
1
2BLU/BLK
BLU/RED
3
6
BLK
“Q01” Q01-4
Q01-17IG
GND4
YEL/RED
YEL Q01-7
Q01-8 P- P+“Q07”
“Q01”
5
[A]
[B]
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adaptor from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

10B-28 AIR BAG SYSTEM
DTC B1021 – Driver Air Bag Initiator Circuit Resistance High
DTC B1022 – Driver Air Bag Initiator Circuit Resistance Low
DTC B1024 – Driver Air Bag Initiator Circuit Short to Ground
DTC B1025 – Driver Air Bag Initiator Circuit Short to Power Circuit
WIRING DIAGRAM
DTC WILL SET WHEN
DTC B1021 :
The combined resistance of the driver air bag (inflator) module, contact coil assembly, harness wiring and con-
nector terminal contact is above a specified value for specified time.
DTC B1022 :
The combined resistance of the driver air bag (inflator) module, contact coil assembly, harness wiring and con-
nector terminal contact is below a specified value for specified time.
DTC B1024 :
The voltage measured at driver air bag initiator circuit is below a specified value for specified time.
DTC B1025 :
The voltage measured at driver air bag initiator circuit is above a specified value for specified time.
TABLE TEST DESCRIPTION
DTC B1021, B1022, B1024 and B1025 :
STEP 1 : Check whether malfunction is in contact coil and driver air bag (inflator) module or the others.
STEP 2 : Check driver air bag (inflator) module initiator circuit in air bag harness.
STEP 3 : Check whether malfunction is in contact coil or driver air bag (inflator) module.
[A] : Shorting bar 2. Ignition switch 5. Contact coil assembly
[B] : Airbag harness 3.“AIR BAG” fuse 6. Driver air bag (inflator) module
1. From main fuse 4. SDM 7. Ground for air bag system
1
2BLU/RED BLU/BLK
3
7
BLK
“Q01” Q01-4
Q01-17IG
GND4
[A]
[B]
GRN/RED
GRN Q01-10
Q01-9 D- D+“Q06”
“Q01”
“Q05”6
5
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

AIR BAG SYSTEM 10B-33
DTC B1031 – Power Source Voltage High
DTC B1032 – Power Source Voltage Low
WIRING DIAGRAM
DTC WILL SET WHEN
DTC B1031 :
The power source voltage to SDM is above specified value for specified time.
DTC B1032 :
The power source voltage is below an approx. 8 V for specified time.
TABLE TEST DESCRIPTION
DTC B1031 :
STEP 1 : Check if voltage applied to SDM is within normal range.
STEP 2 : Check if DTC B1031 still exists.
DTC B1032 :
STEP 1 : Check if voltage applied to SDM is within normal range.
STEP 2 : Check if DTC B1032 still exists.
[A] : Air bag harness 2. Ignition switch 4. SDM
1. From main fuse 3.“AIR BAG” fuse 5. Ground for air bag system
1
2BLU/RED BLU/BLK
3
5
BLK
“Q01” Q01-4
Q01-17IG
GND4
[A]
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

10B-40 AIR BAG SYSTEM
DTC B1041 – Driver Pretensioner Initiator Circuit Resistance High
DTC B1042 – Driver Pretensioner Initiator Circuit Resistance Low
DTC B1043 – Driver Pretensioner Initiator Circuit Short to Ground
DTC B1044 – Driver Pretensioner Initiator Circuit Short to Power Circuit
DTC B1045 – Passenger Pretensioner Initiator Circuit Resistance High
DTC B1046 – Passenger Pretensioner Initiator Circuit Resistance Low
DTC B1047 – Passenger Pretensioner Initiator Circuit Short to Ground
DTC B1048 – Passenger Pretensioner Initiator Circuit Short to Power Circuit
WIRING DIAGRAM
[A] : Shorting bar 2. Ignition switch 5. Driver seat belt pretensioner
[B] : Air bag harness 3.“AIR BAG” fuse 6. Passenger seat belt pretensioner
1. From main fuse 4. SDM 7. Ground for air bag system
PNK
WHT
BRN
LT GRN
“Q11” “Q12”
Q01-12
Q01-11
Q01-5
Q01-6 PP- PP+ DP- DP+
“Q01”
5
6 [A]
[B]1
2BLU/BLK
BLU/RED
3
7
BLK
“Q01” Q01-4
Q01-17IG
GND4
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

AIR BAG SYSTEM 10B-47
DTC B1061 – “AIR BAG” Warning Lamp Circuit Failure
WIRING DIAGRAM
DTC WILL SET WHEN:
The voltage at the “AIR BAG” warning lamp circuit terminal “Q01-2” does not match the commanded state of the
warning lamp driver for specified time.2 1) Inspect front of vehicle and undercar-
riage for signs of impact.
Are there signs of impact?Replace components and
perform inspections as
directed in REPAIRS AND
INSPECTIONS
REQUIRED AFTER AN
ACCIDENT in this section.Substitute a known-good
SDM and recheck. Step Action Yes No
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
1. From main fuse 5.“AIR BAG” fuse 9. To ECM, TCM (if equipped) and ABS control
module (if equipped)
2. Ignition switch 6. Connection detection pin 10.“AIR BAG” monitor coupler
3.“IG METER” fuse 7. SDM 11. Ground for air bag system
4.“AIR BAG” warning lamp in combination meter 8. To DLC [A]: Air bag harness
1
2
34 BLK/BLUBLU/BLK BLU/RED
BLK/WHT BLK/WHTBLUBLU
6
PPL/REDPPL/RED
8
9
10
11
PPL
BLK
“Q04”
“Q01”
Q01-2
Q01-20
Q01-15
Q01-17L1
L2
SDL
DNS
GNDLA
Q01-4
IG
7
[A]
12V
5V
“G27”“Q02”
5
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

AIR BAG SYSTEM 10B-65
Air Bag (Inflator) Module and Seat Belt Pretensioner Disposal
Do not dispose of the live (undeployed) air bag (inflator) modules and seat belt pretensioners.
The method employed depends upon the final disposition of the particular vehicle, as noted in “DEPLOYMENT/
ACTIVATION OUTSIDE VEHICLE” and “DEPLOYMENT/ACTIVATION INSIDE VEHICLE”.
Deployment/Activation Outside Vehicle :
Follow this procedure when disposing of the air bag (inflator) module(s) and seat belt pretensioner(s) only (i.e.,
the vehicle itself will be used again).
Deployment/Activation Inside Vehicle :
Follow this procedure when scrapping the entire vehicle including the air bag (inflator) modules and seat belt
pretensioners.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 may cause personal injury.
Undeployed air bag (inflator) module/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.
WARNING:
Following precautions must be observed for this work. Failure to observe any of them may result in
personal injury.
The procedure should be followed strictly as described here.
Be sure to read “SERVICE PRECAUTIONS” beforehand.
To avoid an accidental deployment, this work should be performed by no more than one person.
Since the smoke is produced when air bag is deployed and pretensioner is activated, select a well-
ventilated area.
The air bag (inflator) module and seat belt pretensioner will immediately deploy/activate when a
power source is connected to it. Wear safety glasses throughout this entire deployment/activation
and disposal procedure.
Wear suitable ear protection when deploying air bag/activating pretensioner. Also, advise those
who are in the area close to deployment/activation site to wear suitable ear protection.
Do not deploy/activate two or more air bag system components (air bag (inflator) modules and seat
belt pretensioners) at the same time.
Never connect deployment harness to any power source before connecting deployment harness to
the air bag (inflator) module and seat belt pretensioner. Deployment harness shall remain shorted
and not be connected to a power source until the air bag is to be deployed and the pretensioner is
to be activated.

AIR BAG SYSTEM 10B-71
18) Dispose of the deployed air bag (inflator) module and the
activated seat belt pretensioner through normal refuse chan-
nels after it has cooled for at least 10 minutes and tightly seal
the air bag (inflator) module and the seat belt pretensioner in
a strong vinyl bag. (Refer to “DEPLOYED AIR BAG (INFLA-
TOR) MODULE AND ACTIVATED SEAT BELT PRETEN-
SIONER DISPOSAL” in detail.)
19) Wash your hands with mild soap and water afterward.
20) Ensure that the deployment harness has been disconnected
from the power source and that its two banana plugs have
been shorted together by fully seating one banana plug into
the other.
21) Disconnect the deployment harness from the air bag (infla-
tor) module and the seat belt pretensioner.
22) Temporarily store air bag (inflator) module or seat belt pre-
tensioner.
[For driver air bag (inflator) module]
Temporarily store the air bag (inflator) module with its vinyl
trim cover facing up, away from the surface upon which it
rests. Refer to “SERVICE PRECAUTIONS” for details.
[For seat belt pretensioner]
When temporarily strong the seat belt pretensioner, be sure
NOT to face its exhaust hole provided side down. It must
face up. Refer to “SERVICE PRECAUTIONS” for details.
23) Contact your local distributor for further assistance.
NOTE:
The remaining steps are to be followed in the unlikely
event that the air bag (inflator) module did not deploy or
the seat belt pretensioner did not activate after following
these procedures.