2001 SUZUKI GRAND VITARA Ignition switch
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![SUZUKI GRAND VITARA 2001 2.G Owners Manual AIR BAG SYSTEM 10B-29
DIAGNOSTIC FLOW TABLE
DTC B1021 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With](/manual-img/20/7584/w960_7584-605.png "SUZUKI GRAND VITARA 2001 2.G Owners Manual AIR BAG SYSTEM 10B-29
DIAGNOSTIC FLOW TABLE
DTC B1021 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With")
AIR BAG SYSTEM 10B-29
DIAGNOSTIC FLOW TABLE
DTC B1021 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF, disconnect contact coil con-
nector located near the base of the steering column.
2) Check proper connection to contact coil at terminals
in “Q06” connector.
3) If OK then connect Special Tool (B) to contact coil
connector disconnected at step 1).
With ignition switch ON, is DTC B1021 current?Go to step 2. Go to step 3.
2 1) With ignition switch OFF, disconnect SDM connector.
2) Check proper connection to SDM at terminals “Q01-9”
and “Q01-10”.
3) If OK then measure resistance between “Q01-9” and
“Q01-10” terminals with connected Special Tool (B).
Is resistance 4.5 Ω or less?Substitute a known-
good SDM and
recheck.Repair high resis-
tance or open in
“GRN” or “GRN/RED”
wire circuit.
3 1) With ignition switch OFF, disconnect Special Tool (B)
then reconnect contact coil connector located near
the base of the steering column.
2) Remove driver air bag (inflator) module from steering
wheel (Refer to DRIVER AIR BAG (INFLATOR)
MODULE in Section 3C1).
3) Check proper connection to driver air bag (inflator)
module at terminals in “Q05” connector.
4) If OK then connect Special Tool (B) to “Q05” connec-
tor.
With ignition switch ON, is DTC B1021 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to
COMBINATION
SWITCH/CON-
TACT COIL AND
COMBINATION
SWITCH ASSEM-
BLY in Section
3C1).Ignition switch OFF.
Replace driver air
bag (inflator) module
(Refer to DRIVER
AIR BAG (INFLA-
TOR) MODULE in
Section 3C1).
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Page 607 of 656
![SUZUKI GRAND VITARA 2001 2.G Owners Manual 10B-30 AIR BAG SYSTEM
DTC B1022 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF,](/manual-img/20/7584/w960_7584-606.png "SUZUKI GRAND VITARA 2001 2.G Owners Manual 10B-30 AIR BAG SYSTEM
DTC B1022 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF,")
10B-30 AIR BAG SYSTEM
DTC B1022 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF, disconnect contact coil con-
nector located near the base of the steering column.
2) Check proper connection to contact coil at terminals
in “Q06” connector.
3) If OK then connect Special Tool (B) to contact coil
connector disconnected at step 1).
With ignition switch ON, is DTC B1022 current?Go to step 2. Go to step 3.
2 1) With ignition switch OFF, disconnect SDM connector.
2) Check proper connection to SDM at terminals “Q01-9”
and “Q01-10”.
3) If OK then measure resistance between “Q01-9” and
“Q01-10” terminals with connected Special Tool (B).
Is resistance 1.7 Ω or more?Substitute a known-
good SDM and
recheck.Repair short from
“GRN” wire circuit to
“GRN/RED” wire cir-
cuit or from “GRN” or
“GRN/RED” wire cir-
cuit to other wire cir-
cuit.
3 1) With ignition switch OFF, disconnect Special Tool (B)
then reconnect contact coil connector located near
the base of the steering column.
2) Remove driver air bag (inflator) module from steering
wheel (Refer to DRIVER AIR BAG (INFLATOR)
MODULE in Section 3C1).
3) Check proper connection to driver air bag (inflator)
module at terminals in “Q05” connector.
4) If OK then connect Special Tool (B) to “Q05” connec-
tor.
With ignition switch ON, is DTC B1022 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to
COMBINATION
SWITCH/CON-
TACT COIL AND
COMBINATION
SWITCH ASSEM-
BLY in Section
3C1).Ignition switch OFF.
Replace driver air
bag (inflator) module
(Refer to DRIVER
AIR BAG (INFLA-
TOR) MODULE in
Section 3C1).
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Page 608 of 656
![SUZUKI GRAND VITARA 2001 2.G Owners Manual AIR BAG SYSTEM 10B-31
DTC B1024 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF,](/manual-img/20/7584/w960_7584-607.png "SUZUKI GRAND VITARA 2001 2.G Owners Manual AIR BAG SYSTEM 10B-31
DTC B1024 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF,")
AIR BAG SYSTEM 10B-31
DTC B1024 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF, disconnect contact coil
connector located near the base of the steering col-
umn.
2) Check proper connection to contact coil at terminals
in “Q06” connector.
3) If OK then connect Special Tool (B) to contact coil
connector disconnected at step 1).
With ignition switch ON, is DTC B1024 current?Go to step 2. Go to step 3.
2 1) With ignition switch OFF, disconnect Special Tool
(B) and SDM connector.
2) Measure resistance between “Q01-9” terminal and
body ground and between “Q01-10” terminal and
body ground.
Are circuits open?Substitute a known-
good SDM and
recheck.Repair short from
“GRN” or “GRN/RED”
wire circuit to ground.
3 1) With ignition switch OFF, disconnect Special Tool
(B) then reconnect contact coil connector located
near the base of the steering column.
2) Remove driver air bag (inflator) module from steer-
ing wheel (Refer to DRIVER AIR BAG (INFLATOR)
MODULE in Section 3C1).
3) Check proper connection to driver air bag (inflator)
module at terminals in “Q05” connector.
4) If OK then connect Special Tool (B) to “Q05” con-
nector.
With ignition switch ON, is DTC B1024 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to
COMBINATION
SWITCH/CONTACT
COIL AND COMBI-
NATION SWITCH
ASSEMBLY in Sec-
tion 3C1).Ignition switch OFF.
Replace driver air bag
(inflator) module
(Refer to DRIVER AIR
BAG (INFLATOR)
MODULE in Section
3C1).
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Page 609 of 656
![SUZUKI GRAND VITARA 2001 2.G Owners Manual 10B-32 AIR BAG SYSTEM
DTC B1025 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF,](/manual-img/20/7584/w960_7584-608.png "SUZUKI GRAND VITARA 2001 2.G Owners Manual 10B-32 AIR BAG SYSTEM
DTC B1025 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF,")
10B-32 AIR BAG SYSTEM
DTC B1025 :
[A] Fig. for STEP 1 and 2/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF, disconnect contact coil con-
nector located near the base of the steering column.
2) Check proper connection to contact coil at terminals
in “Q06” connector.
3) If OK then connect Special Tool (B) to contact coil
connector disconnected at step 1).
With ignition switch ON, is DTC B1025 current?Go to step 2. Go to step 3.
2 1) With ignition switch OFF, disconnect Special Tool (B)
and SDM connector.
2) Measure voltage from “Q01-9” terminal to body
ground and from “Q01-10” terminal to body ground.
With ignition switch ON, are they 1 V or less?Substitute a known-
good SDM and
recheck.Repair short from
“GRN” or “GRN/RED”
wire circuit to power
circuit.
3 1) With ignition switch OFF, disconnect Special Tool (B)
then reconnect contact coil connector located near
the base of the steering column.
2) Remove driver air bag (inflator) module from steering
wheel (Refer to DRIVER AIR BAG (INFLATOR)
MODULE in Section 3C1).
3) Check proper connection to driver air bag (inflator)
module at terminals in “Q05” connector.
4) If OK then connect Special Tool (B) to “Q05” connec-
tor.
With ignition switch ON, is DTC B1025 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to
COMBINATION
SWITCH/CON-
TACT COIL AND
COMBINATION
SWITCH ASSEM-
BLY in Section
3C1).Ignition switch OFF.
Replace driver air
bag (inflator) module
(Refer to DRIVER
AIR BAG (INFLA-
TOR) MODULE in
Section 3C1).
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Page 610 of 656
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.
Page 611 of 656
10B-34 AIR BAG SYSTEM
DIAGNOSTIC FLOW TABLE
DTC B1031 :
Fig. for STEP 1
Special tool
(A) : 09932-75020
DTC B1032 :Step Action Yes No
1 1) With ignition switch OFF, disconnect SDM
connector.
2) Check proper connection to SDM at “Q01-4”
terminal.
3) If OK then ignition switch ON, and then
check voltage from “Q01-4” terminal on
SDM connector to body ground.
Is voltage 14 V or less?Go to step 2. Check Charging System
and repair as necessary.
(Refer to DIAGNOSIS in
Section 6H)
2 1) With ignition switch OFF, reconnect SDM
connector.
With ignition switch ON, is DTC B1031 current?Substitute a known-good
SDM and recheck.Check Charging System
and repair as necessary.
(Refer to DIAGNOSIS in
Section 6H)
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Step Action Yes No
1 1) Measure voltage on battery.
Is voltage 11 V or more?Go to step 2. Check Charging System
and repair as necessary.
(Refer to DIAGNOSIS in
Section 6H)
2 1) With ignition switch OFF, disconnect SDM
connector.
2) Check proper connection to SDM at “Q01-4”
terminal.
3) If OK then ignition switch ON, and then
check voltage from “Q01-4” terminal on
SDM connector to body ground.
Is voltage 8 V or more?Go to step 3. Possibly faulty points are
as follows. Check each of
them and repair as neces-
sary.
•Circuit from battery to
“Q01” connector
•Charging System
(Refer to DIAGNOSIS
in Section 6H)
Page 612 of 656
AIR BAG SYSTEM 10B-35
Fig. for STEP 2
Special tool
(A) : 09932-75020 3 1) With ignition switch OFF, reconnect SDM
connector.
With ignition switch ON, is DTC B1032 current?Substitute a known-good
SDM and recheck.Check Charging System
and repair as necessary.
(Refer to DIAGNOSIS in
Section 6H) 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.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Page 614 of 656
AIR BAG SYSTEM 10B-37
DTC B1036 and B1038 :
STEP 1 : Check whether malfunction is in forward sensor.
STEP 2 : Check if forward sensor circuit is shorted between two wires.
STEP 3 : Check if forward sensor circuit is shorted to power circuit.
DIAGNOSTIC FLOW TABLE
DTC B1035 and B1037 :
Step Action Yes No
1 1) Ignition switch OFF.
2) Disconnect driver air bag (inflator) module
connector, passenger air bag (inflator) mod-
ule connector, driver pretensioner module
connector, and passenger pretensioner
module connector.
3) Disconnect forward sensor.
4) Check proper connection to forward sensor
connector at “ORN/GRN” and “ORN/BLU”
terminals or “YEL/GRN” and “YEL/BLU” ter-
minals.
5) If OK then measure resistance between ter-
minals of forward sensor.
Is resistance 738 – 905 Ω?Go to step 2. Replace forward sensor.
2 1) Reconnect forward sensor.
2) Disconnect SDM connector.
3) Check proper connection to SDM connector
at terminals “Q01-13” and “Q01-14” or ter-
minals “Q01-18” and “Q01-19”.
4) If OK then measure resistance between ter-
minal “Q01-13” and “Q01-14” or terminal
“Q01-18” and “Q01-19”.
Is circuit open?Repair open in “ORN/
GRN” and “ORN/BLU”
wire circuit (between for-
ward sensor and SDM) or
“YEL/GRN” and “YEL/
BLU” wire circuit
(between forward sensor
and SDM).Go to step 3.
3 1) Disconnect forward sensor.
2) Measure resistance between “Q01-13” ter-
minal and body ground, “Q01-14” terminal
and body ground, or between “Q01-18” ter-
minal and body ground, “Q01-19” terminal
and body ground.
Are circuits open?Substitute a known-good
SDM and recheck.Repair short from “ORN/
GRN” or “ORN/BLU” wire
circuit (between forward
sensor and SDM) to
ground, or from “YEL/
GRN” or “YEL/BLU” wire
circuit (between forward
sensor and SDM) to
ground.