2001 SUZUKI GRAND VITARA air flow meter

AIR BAG SYSTEM 10B-9
Air Bag Diagnostic System Check
The diagnostic procedures used in this section are designed to find and repair air bag system malfunctions.
To get the best results, it is important to use the diagnostic flow tables and follow the sequence listed below.
1) Perform the AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLE.
(The AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLE must be the starting point of any air bag sys-
tem diagnosis.
The AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLE checks for proper “AIR BAG” warning lamp
operation through “AIR BAG” warning lamp and whether air bag diagnostic trouble codes exist.)
2) Refer to the proper diagnostic table as directed by the AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW
TABLE.
(The AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLE will lead you to the correct table to diagnose
any air bag system malfunctions. Bypassing these procedures may result in extended diagnostic time, incor-
rect diagnosis and incorrect parts replacement.)
3) Repeat the AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLE after any repair or diagnostic proce-
dures have been performed.
(Performing the AIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLE after all repair or diagnostic pro-
cedures will ensure that the repair has been made correctly and that no other malfunctions exist.)
FLOW TABLE TEST DESCRIPTION
STEP 1 : Check that “AIR BAG” warning lamp lights.
STEP 2 : Check that “AIR BAG” warning lamp lights.
STEP 3 : Check diagnosis switch circuit.
STEP 4 : Check that “AIR BAG” warning lamp flashes 6 times after ignition switch is turned ON.
STEP 6 : Check that history codes are in SDM memory. (using SUZUKI scan tool)
STEP 7 : Check that history codes are in SDM memory. (using monitor coupler)
STEP 9 : Check that current code is in SDM memory. (using SUZUKI scan tool)
STEP 10 : Check that current code is in SDM memory. (using monitor coupler)WARNING:
To avoid deployment when troubleshooting the air bag system, do not use electrical test equipment
such as a battery powered or AC powered voltmeter, ohmmeter, etc., or any type of electrical equip-
ment other than that specified in this manual. Do not use a non-powered probe type tester.
Instructions in this manual must be followed carefully, otherwise personal injury may result.
CAUTION:
The order in which diagnostic trouble codes are diagnosed is very important. Failure to diagnose the
diagnostic trouble codes in the order specified may result in extended diagnostic time, incorrect diag-
nosis and incorrect parts replacement.

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-17
TABLE TEST DESCRIPTION
Table A :
STEP 1 : Check “AIR BAG” fuse.
STEP 2 : Check power source circuit.
STEP 3 : Check “AIR BAG” warning lamp circuit.
Table B :
STEP 1 : Check combination meter power feed circuit.
STEP 2 : Check electrical connection check mechanism in SDM connector.
STEP 3 : Check “AIR BAG” warning lamp circuit.
STEP 4 : Check open in “AIR BAG” warning lamp circuit.
STEP 5 : Check short from “AIR BAG” warning lamp circuit to power circuit.
STEP 6 : Check “AIR BAG” bulb.
Table C and D :
STEP 1 : Check “AIR BAG” monitor coupler.
STEP 2 : Check diagnosis switch circuit for air bag system.
DIAGNOSTIC FLOW TABLE
Table A :
[A] Fig. for STEP 2/[B] Fig. for STEP 3
Special tool
(A) : 09932-75020 Step Action Yes No
1 1) Ignition switch OFF.
2) Remove and inspect “AIR BAG” fuse.
Is fuse good?Go to step 2.“BLU/RED” wire short to
ground.
After repair, replace “AIR
BAG” fuse.
2 1) Disconnect SDM connector
2) Check proper connection to SDM at termi-
nal “Q01-4”.
3) If OK then check voltage between “Q01-4”
terminal of SDM connector and body
ground with ignition switch ON.
Is it 8 V or more?Go to step 3.“BLU/RED” wire (between
“AIR BAG” fuse and SDM
connector) open “BLU/
BLK” wire (between igni-
tion switch and “AIR BAG”
fuse) open or short to
ground
3 1) Disconnect 16-pin connector from combina-
tion meter. Refer to COMBINATION
METER in SECTION 8C.
2) Check resistance between “Q01-2” termi-
nal of SDM connector and body ground.
Is circuit open?Substitute a known-good
SDM and recheck.“BLU” wire (between com-
bination meter and SDM
connector) short to
ground

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-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.