Nissan Teana J32. Instruction — part 1069
SRC-30
< COMPONENT DIAGNOSIS >
B1042, B1043, B1044, B1045, B1046, B1047 DIAGNOSIS SENSOR UNIT
B1042, B1043, B1044, B1045, B1046, B1047 DIAGNOSIS SENSOR UNIT
Description
INFOID:0000000003813954
Check the whole SRS and displays the malfunction either by illuminating or blinking the air bag warning lamp
in the combination meter. Malfunctioning part can be detected by on board self-diagnosis system and CON-
SULT-III.
OPERATION
It detects a shock that exceeds a specified level and monitors whether the driver and passenger air bags, front
side air bag, side curtain air bag and pre-tensioner seat belts operate normally.
STRUCTURE
It contains the “G” sensors for both frontal and side collisions and spare battery function in case of main bat-
tery damage in collision.
INSTALLATION
Air bag diagnosis sensor unit is installed under the center console with fixed bolts.
DTC Logic
INFOID:0000000003813955
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-10, "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:0000000003813956
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 connectors.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1042
B1043
B1044
B1045
B1046
B1047
CONTROL UNIT
Air bag diagnosis sensor unit is mal-
functioning or out of the specification
• Malfunction in air bag diagnosis sen-
sor unit
• Configuration in air bag diagnosis
sensor unit dose not match to the ve-
hicles specification
B1042, B1043, B1044, B1045, B1046, B1047 DIAGNOSIS SENSOR UNIT
SRC-31
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
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
SRC-32
< COMPONENT DIAGNOSIS >
B1049 DRIVER AIRBAG MODULE
B1049 DRIVER AIRBAG MODULE
Description
INFOID:0000000003813957
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 which inflates air bag.
INSTALLATION
Driver air bag module is installed on the center of steering wheel with fixed bolts.
DTC Logic
INFOID:0000000003813958
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-10, "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:0000000003813959
WARNING:
With CONSULT-III
• 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
B1049
DRIVER AIRBAG MOD-
ULE
[OPEN]
Driver air bag module circuit is open
(including the spiral cable)
• Disconnection of wiring harness and
open
• Malfunction in driver air bag module
• Malfunction in spiral cable
• Malfunction in air bag diagnosis sen-
sor unit
B1049 DRIVER AIRBAG MODULE
SRC-33
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
YES
>> GO TO 3.
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 air bag module
Combination switch (Spiral cable)
Continuity
Connector
Terminal
Connector
Terminal
M350
10
M32
28
Existed
11
30
Driver air bag module
Ground
Continuity
Connector
Terminal
M350
10
Not existed
11
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