Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 407
8B-13 Air Bag System:
Diagnostic Information and Procedures
Air Bag Diagnostic System Check
S6JB0A8204001
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 equipment 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 DTCs are diagnosed is
very important. Failure to diagnose the DTCs
in the order specified may result in extended
diagnostic time, incorrect diagnosis and
incorrect parts replacement.
The diagnostic procedures used are designed to find
and repair air bag system malfunctions.
To get the best results, it is important to use the
diagnostic flow and follow the sequence in the following.
1) Perform the “Air Bag Diagnostic System Check
Flow”.
(The “Air Bag Diagnostic System Check Flow” must
be the starting point of any air bag system diagnosis.
The “Air Bag Diagnostic System Check Flow” checks
for proper “AIR BAG” warning lamp operation
through “AIR BAG” warning lamp and whether air
bag DTCs exist.)
2) Refer to the proper diagnostic flow as directed by the
“Air Bag Diagnostic System Check Flow”.
(The “Air Bag Diagnostic System Check Flow” will
lead you to the correct flow to diagnose any air bag
system malfunctions. Bypassing these procedures
may result in extended diagnostic time, incorrect
diagnosis and incorrect parts replacement.)
3) Repeat the “Air Bag Diagnostic System Check Flow”
after any repair or diagnostic procedures have been
performed.
(Performing the “Air Bag Diagnostic System Check
Flow” after all repair or diagnostic procedures will
ensure that the repair has been made correctly and
that no other malfunctions exist.)
Air Bag Diagnostic System Check Flow
S6JB0A8204002
CAUTION
!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to each
flow.
• When measurement of resistance or voltage is required in the flow, use a tester along with a correct
terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor
• If an open circuit in the air bag wire harness damaged, connector or terminal is found, replace the
wire harness, connectors and terminals as an assembly.
Flow test description
Step 1: Check “AIR BAG” warning lamp and circuits.
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 code(s) is in SDM memory. (using SUZUKI scan tool)
Step 7: Check that history code(s) is 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)
5. Forward-sensor
12. Seat belt pretensioner
: 9 N
⋅m (0.9 kgf-m, 6.5 lb-ft)
6. “A/B” fuse in junction block assembly
13. Side curtain-air bag (inflator) module (if equipped)
: 6 N
⋅m (0.6 kgf-m, 4.5 lb-ft)
7. Air bag harness in floor harness
14. Air bag harness in instrument panel harness
: 11 N
⋅m (1.1 kgf-m, 8.0 lb-ft)
Air Bag System: 8B-14
Step
Action
Yes
No
1
1) Make sure that battery voltage is about 11 V or higher.
2) Note “AIR BAG” warning lamp as ignition switch is
turned ON.
Does “AIR BAG” warning lamp come ON when ignition
switch is turned ON?
Go to Step 2.
Proceed to ““AIR BAG”
Warning Lamp Does
Not Come ON”.
2
Does “AIR BAG” warning lamp come ON steady?
Proceed to ““AIR BAG”
Warning Lamp Comes
ON Steady”.
Go to Step 3.
3
Does “AIR BAG” warning lamp keep flashing (indicating
DTC) when ignition switch is ON?
Proceed to ““AIR BAG”
Warning Lamp
Flashes”.
Go to Step 4.
4
Does “AIR BAG” warning lamp turn OFF, after flashing 6
times?
“AIR BAG” warning
lamp circuit is in good
condition. Go to Step 5.
“AIR BAG” warning
lamp circuit is in good
condition. Go to Step 8.
5
Do you have SUZUKI scan tool?
Go to step 6.
Go to step 7.
6
Check DTC referring to “DTC Check” using SUZUKI scan
tool.
Is “NO CODES” displayed on SUZUKI scan tool?
Air bag system is in
good condition.
An intermittent trouble
has occurred at some
place.
Check the connector
harness, etc. related to
the sensed DTC.
Refer to “Inspection of
Intermittent and Poor
Connections”.
Then clear DTC
(referring to “DTC
Clearance”.) and repeat
this flow.
7
1) Check DTC referring to “DTC Check” using monitor
connector (if equipped).
Is flashing pattern DTC No. 0000 indicated on “AIR BAG”
warning lamp?
Air bag system is in
good condition.
An intermittent trouble
has occurred at some
place.
Check the connector
harness, etc. related to
the sensed DTC.
Refer to “Inspection of
Intermittent and Poor
Connections”.
Then clear DTC
(referring to “DTC
Clearance”.) and repeat
this flow.
8
Do you have SUZUKI scan tool?
Go to step 9.
Go to step 10.
9
Check DTC referring to “DTC Check” using SUZUKI scan
tool.
Is “NO CODES” displayed on SUZUKI scan tool?
Substitute a known-
good SDM and recheck.
Check and repair
according to flow
corresponding to that
DTC.
10 Check DTC referring to “DTC Check” using monitor
connector (if equipped).
Is flashing pattern DTC No. 0000 indicated on “AIR BAG”
warning lamp?
Substitute a known-
good SDM and recheck.
Check and repair
according to flow
corresponding to that
DTC.
8B-15 Air Bag System:
DTC Table
S6JB0A8204003
SDM DTC
DTC
“AIR BAG” warning lamp
flashing pattern
Diagnosis
No.
Mode
—
0000
Normal
—
B1013 1013
SDM
SDM fault
Diagnose trouble
according to
diagnostic flow
corresponding to
each code No.
B1016 1016
Power source voltage
Too high
B1017 1017
Too Low
B1021 1021
SDM
Air bag module exploded
B1031 1031
Driver air bag circuit
Resistance high
B1032 1032
Resistance low
B1033 1033
Short to ground
B1034 1034
Short to power circuit
B1041 1041
Passenger air bag
circuit
Resistance high
B1042 1042
Resistance low
B1043 1043
Short to ground
B1044 1044
Short to power circuit
B1051 1051
Driver pretensioner
circuit
Resistance high
B1052 1052
Resistance low
B1053 1053
Short to ground
B1054 1054
Short to power circuit
B1055 1055
Passenger
pretensioner circuit
Resistance high
B1056 1056
Resistance low
B1057 1057
Short to ground
B1058 1058
Short to power circuit
B1073 1073
Driver forward-sensor
circuit
Short to ground
B1074 1074
Short to power circuit or open
B1077 1077
Passenger forward-
sensor circuit
Short to ground
B1078 1078
Short to power circuit or open
B1085 1085
Side-sensor
Wrong assembly
MCODEB0000-0-01
MCODEB1013-0-01
MCODEB1016-0-01
MCODEB1017-0-01
MCODEB1021-0-01
MCODEB1031-0-01
MCODEB1032-0-01
MCODEB1033-0-01
MCODEB1034-0-01
MCODEB1041-0-01
MCODEB1042-0-01
MCODEB1043-0-01
MCODEB1044-0-01
MCODEB1051-0-01
MCODEB1052-0-01
MCODEB1053-0-01
MCODEB1054-0-01
MCODEB1055-0-01
MCODEB1056-0-01
MCODEB1057-0-01
MCODEB1058-0-01
MCODEB1073-0-01
MCODEB1074-0-01
MCODEB1077-0-01
MCODEB1078-0-01
MCODEB1085-0-01
Air Bag System: 8B-16
B1086 1086
Left side-sensor
Performance problem
Diagnose trouble
according to
diagnostic flow
corresponding to
each code No.
B1087 1087
Communication error
B1096 1096
Right side-sensor
Performance problem
B1097 1097
Communication error
B1321 1321
Left side-air bag
Resistance high
B1322 1322
Resistance low
B1323 1323
Short to ground
B1324 1324
Short to power circuit
B1325 1325
Right side-air bag
Resistance high
B1326 1326
Resistance low
B1327 1327
Short to ground
B1328 1328
Short to power circuit
B1331 1331
Left side curtain-air
bag circuit
Resistance high
B1332 1332
Resistance low
B1333 1333
Short to ground
B1334 1334
Short to power circuit
B1335 1335
Right side curtain-air
bag circuit
Resistance high
B1336 1336
Resistance low
B1337 1337
Short to ground
B1338 1338
Short to power circuit
DTC
“AIR BAG” warning lamp
flashing pattern
Diagnosis
No.
Mode
MCODEB1086-0-01
MCODEB1087-0-01
MCODEB1096-0-01
MCODEB1097-0-01
MCODEB1321-0-01
MCODEB1322-0-01
MCODEB1323-0-01
MCODEB1324-0-01
MCODEB1325-0-01
MCODEB1326-0-01
MCODEB1327-0-01
MCODEB1328-0-01
MCODEB1331-0-01
MCODEB1332-0-01
MCODEB1333-0-01
MCODEB1334-0-01
MCODEB1335-0-01
MCODEB1336-0-01
MCODEB1337-0-01
MCODEB1338-0-01
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