Infiniti FX35, FX50 (S51). Manual — part 1726
B1080, B1096 DRIVER AIRBAG MODULE
SRC-69
< DTC/CIRCUIT DIAGNOSIS >
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B1080, B1096 DRIVER AIRBAG MODULE
Description
INFOID:0000000005241130
For driver air bag module, crash is judged by main “G” sensor output signal and safing algorithm in front direc-
tion.
OPERATION
In case of frontal collision whose acceleration exceeds the specified level, the ignition materials are ignited by
electric ignition system. The system burns the gas generating materials resulting in a chemical reaction. This
generates hot gases that flow into the air bag through a filter and expand the bag.
STRUCTURE
Driver air bag module mainly consists of air bag and inflator that inflates air bag.
INSTALLATION
Driver air bag module is installed on the center of steering wheel with fixed bolts.
DTC Logic
INFOID:0000000005241131
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “AIR BAG” Self Diagnostic Result.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-16, "Air Bag Warning Lamp Diagnosis"
.
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005241132
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace harness connector.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1080
B1096
DRIVER AIRBAG MOD-
ULE
[SHORT]
Driver air bag module circuit are shorted
to each other
(including the spiral cable)
• Disconnection of wiring harness
and short
• Malfunction in driver air bag module
• Malfunction in spiral cable
• Malfunction in air bag diagnosis sen-
sor unit
SRC-70
< DTC/CIRCUIT DIAGNOSIS >
B1080, B1096 DRIVER AIRBAG MODULE
NO
>> Replace wiring harness.
3.
CHECK SPIRAL CABLE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver air bag module harness connector and Combination switch (Spiral cable) harness con-
nector.
3.
Check continuity between driver side air bag module harness connector and body side harness connec-
tor.
4.
Check continuity between driver air bag module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace spiral cable. Refer to
4.
REPLACE DRIVER AIR BAG MODULE
1.
Replace driver air bag module. Refer to
.
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 5.
NO
>> INSPECTION END
5.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
Driver side air bag module
harness connector
Terminal
Body side harness
connector
Terminal
Continuity
M302
10
M35
28
Existed
11
30
M301
12
29
9
30
Driver side air bag module harness con-
nector
Terminal
Ground
Continuity
M302
10
Not existed
11
M301
12
9
B1081 PRE-TEN FRONT RH
SRC-71
< DTC/CIRCUIT DIAGNOSIS >
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B1081 PRE-TEN FRONT RH
Description
INFOID:0000000005241133
For front RH seat belt pre-tensioner, crash is judged by main “G” sensor output signal and safing algorithm in
front direction.
OPERATION
In the case of a frontal collision that exceeds specified impact level, the air bag diagnosis sensor unit detects
the deceleration caused by collision. It restrains the passenger with seat belt easing the stress on passengers
chest with load limiter.
STRUCTURE
The restraint system for front seat occupant consists of the pre-tensioner mechanism and load limiter mecha-
nism.
INSTALLATION
Front RH seat belt pre-tensioner is installed on the underside of center pillar with fixed nuts.
DTC Logic
INFOID:0000000005241134
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “AIR BAG” Self Diagnostic Result.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-16, "Air Bag Warning Lamp Diagnosis"
.
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005241135
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace harness connector.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1081
PRE-TEN FRONT RH
[OPEN]
Front RH seat belt pre-tensioner circuit
is open
• Disconnection of wiring harness and
open
• Malfunction in front RH seat belt pre-
tensioner
• Malfunction in air bag diagnosis sen-
sor unit
SRC-72
< DTC/CIRCUIT DIAGNOSIS >
B1081 PRE-TEN FRONT RH
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
REPLACE FRONT SEAT BELT PRE-TENSIONER
1.
Replace front RH seat belt pre-tensioner. Refer to
SB-6, "SEAT BELT RETRACTOR : Exploded View"
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 4.
NO
>> INSPECTION END
4.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
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