ring SUZUKI SWIFT 2000 1.G Transmission Service Workshop Manual

AIR BAG SYSTEM 10B-7
The adapter will also give an idea of whether contact tension is
sufficient, helping to find an open or intermittent open due to poor
terminal contact.
Special tool
(B) : 09932-75010 (Air Bag Driver/Passenger Load Tool)
This tool is used only when called for in this section. It is used as
a diagnostic aid and safety device to prevent inadvertent air bag
(inflator) module deployment.
The load tool has three connectors attached to its case which are
electrically functional and serve as resistive load substitutions.
No more than two connectors are used at any time.
One of connectors (“STEERING WHEEL”) is used to substitute
the load of followings.
driver air bag (inflator) module when it is connected at the
top of the column to the contact coil assembly.
passenger air bag (inflator) module when it is connected to
the air bag harness connector for passenger air bag (inflator)
module.
Another connector (“BASE OF COLUMN”) is used to substitute
the load of the driver air bag (inflator) module and the contact coil
assembly when it is connected at the base of the column to the air
bag wire harness.
The third connector (“PASSENGER INFLATOR”) is not used.
By substituting the resistance of the load tool when called for, a
determination can be made as to whether an inflator circuit com-
ponent is causing system malfunction and which component is
causing the malfunction.
The load tool should be used only when specifically called for in
the diagnostic procedures.
1. Connector for contact coil and driver air bag (inflator) module
(Located near the base of the steering column)
2. Connector for driver, passenger air bag (inflator) module and driver and
passenger seat belt pretensioners
3. Not used

10B-8 AIR BAG SYSTEM
INTERMITTENTS AND POOR CONNECTIONS
Most intermittents are caused by faulty electrical connections or
wiring. When a check for proper connection is requested in a
diagnostic flow table, perform careful check of suspect circuits for:
Poor mating of connector halves, or terminals not fully
seated in the connector body (backed out).
Dirt or corrosion on the terminals. The terminals must be
clean and free of any foreign material which could impede
proper terminal contact.
However, cleaning the terminal with a sand paper or the like
is prohibited.
Damaged connector body, exposing the terminals to mois-
ture and dirt, as well as not maintaining proper terminal ori-
entation with the component or mating connector.
Improperly formed or damaged terminals.
Check each connector terminal in problem circuits carefully
to ensure good contact tension by using the corresponding
mating terminal included in the connector test adapter kit
(special tool).
If contact tension is not enough, reform it to increase contact
tension or replace.
Special tool
(A) : 09932-76010 (Connector Test Adapter Kit)
Poor terminal-to-wire connection.
Check each wire harness in problem circuits for poor con-
nection by shaking it by hand lightly. If any abnormal condi-
tion is found, change the wire harness assembly or
component parts with new ones.
Wire insulation which is rubbed through, causing an intermit-
tent short as the bare area touches other wiring or parts of
the vehicle.
Wire broken inside the insulation. This condition could cause
a continuity check to show a good circuit, but if only 1 or 2
strands of a multi-strand-type wire are intact, resistance
could be far too high.
If any abnormality is found, repair or replace as a wire harness
assembly.

AIR BAG SYSTEM 10B-15
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 PAT-
TERN 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·COIL 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/YEL
BLK/YELBLK/WHTYEL/BLKYEL/BLK
6
REDRED
BLU
BLU
5
8
9
10
11
PPL
BLK
“Q04”“Q06”
Q06-2
Q06-4
Q06-14
Q06-15
Q06-17L1
L2
IG
SDL
DNS
GNDLA
7
[A]
12V
5V
“G39”“Q02”
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 CIR-
CUIT
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 “BLU” circuit (in air bag harness).
DIAGNOSTIC FLOW TABLE
[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)
1
14
12
34 BLK/YEL
BLK/YEL
YELBLK/WHT
BLK
BLU/ORNYEL/BLKYEL/BLK
6
RED
WHT/REDRED
BLU
BLU
BLU
5
9
10
11
PPL
BLK
“Q04”“Q06”
Q06-2
Q06-4
Q06-14
Q06-15
Q06-17L1
L2
IG
SDL
DNS
GNDLA
7
[A]
12V
5V
“G39”“Q02”
812
13
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.
Step Action Yes No
1 1) Make sure that SUZUKI scan tool is free from malfunc-
tion and correct cartridge for air bag system is used.
2) Ignition switch OFF.
3) Check proper connection of SUZUKI scan tool to DLC.
Is connection in good condition?Go to step 2. Properly connect SUZUKI
scan tool to DLC.

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
2RED BLK/YELRED
3
6
BLK“Q06”
Q06-4
Q06-17IG
GND4
“G39”“Q02”
BLU/RED
YEL/RED Q06-7
Q06-8 P- P+“Q03”
“Q06”
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.

AIR BAG SYSTEM 10B-29
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 CIR-
CUIT
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
2RED BLK/YELRED
3
7
BLK“Q06”
Q06-4
Q06-17IG
GND4
“G39”“Q02”
[A]
[B]
GRN/RED
GRN Q06-10
Q06-9 D- D+“Q01”
“Q06”
“Q08”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 correct termi-
nal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNECTIONS 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-30 AIR BAG SYSTEM
DIAGNOSTIC FLOW TABLE
DTC B1021 :
Fig. for STEP 1 and 2
Fig. for STEP 2Step 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 “Q01” 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.
2) Check proper connection to SDM at terminals “Q06-9”
and “Q06-10”.
3) If OK then measure resistance between “Q06-9” and
“Q06-10” 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 3C).
3) Check proper connection to driver air bag (inflator)
module at terminals in “Q08” connector.
4) If OK then connect Special Tool (B) to “Q08” 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 3C).Ignition switch OFF.
Replace driver air
bag (inflator) module
(Refer to DRIVER
AIR BAG (INFLA-
TOR) MODULE in
Section 3C).
BASE OF
COLUMN
“Q01”

AIR BAG SYSTEM 10B-31
Fig. for STEP 3
Special tool
(A) : 09932-76010
(B) : 09932-75010
DTC B1022 :
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) With ignition switch OFF, disconnect con-
tact coil connector located near the base of
the steering column.
2) Check proper connection to contact coil at
terminals in “Q01” connector.
3) If OK then connect Special Tool (B) to con-
tact 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.
2) Check proper connection to SDM at termi-
nals “Q06-9” and “Q06-10”.
3) If OK then measure resistance between
“Q06-9” and “Q06-10” terminals with con-
nected 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 circuit or from “GRN”
or “GRN/RED” wire cir-
cuit to other wire circuit.
3 1) With ignition switch OFF, disconnect Spe-
cial 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 3C).
3) Check proper connection to driver air bag
(inflator) module at terminals in “Q08” con-
nector.
4) If OK then connect Special Tool (B) to “Q08”
connector.
With ignition switch ON, is DTC B1022 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to COM-
BINATION SWITCH/
CONTACT COIL AND
COMBINATION SWITCH
ASSEMBLY in Section
3C).Ignition switch OFF.
Replace driver air bag
(inflator) module (Refer to
DRIVER AIR BAG
(INFLATOR) MODULE in
Section 3C).

AIR BAG SYSTEM 10B-33
DTC B1024 :
Fig. for STEP 1 and 2
Fig. for STEP 2Step 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 “Q01” 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.
2) Measure resistance between “Q06-9” terminal and
body ground and between “Q06-10” terminal and
body ground.
Are they 10 Ω or more?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 3C).
3) Check proper connection to driver air bag (inflator)
module at terminals in “Q08” connector.
4) If OK then connect Special Tool (B) to “Q08” 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 3C).Ignition switch OFF.
Replace driver air bag
(inflator) module
(Refer to DRIVER AIR
BAG (INFLATOR)
MODULE in Section
3C).
BASE OF
COLUMN
“Q01”

10B-34 AIR BAG SYSTEM
Fig. for STEP 3
Special tool
(A) : 09932-76010
(B) : 09932-75010
DTC B1025 :
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) With ignition switch OFF, disconnect con-
tact coil connector located near the base of
the steering column.
2) Check proper connection to contact coil at
terminals in “Q01” connector.
3) If OK then connect Special Tool (B) to con-
tact 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 Spe-
cial Tool (B) and SDM.
2) Measure voltage from “ Q06-9” terminal to
body ground and from “Q06-10” 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 cir-
cuit to power circuit.
3 1) With ignition switch OFF, disconnect Spe-
cial 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 3C).
3) Check proper connection to driver air bag
(inflator) module at terminals in “Q08” con-
nector.
4) If OK then connect Special Tool (B) to “Q08”
connector.
With ignition switch ON, is DTC B1025 current?Ignition switch OFF.
Replace contact coil
assembly (Refer to COM-
BINATION SWITCH/
CONTACT COIL AND
COMBINATION SWITCH
ASSEMBLY in Section
3C).Ignition switch OFF.
Replace driver air bag
(inflator) module (Refer to
DRIVER AIR BAG
(INFLATOR) MODULE in
Section 3C).