Infiniti EX35. Manual — part 1353
SRC-38
< COMPONENT DIAGNOSIS >
B1042, B1043, B1044, B1045, B1046, B1047 DIAGNOSIS SENSOR UNIT
B1042, B1043, B1044, B1045, B1046, B1047 DIAGNOSIS SENSOR UNIT
Description
INFOID:0000000003591763
DTC B1042, B1043, B1044, B1045, B1046, B1047 DIAGNOSIS SENSOR UNIT
Detects the whole SRS electrical system 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 electro-diagnosis tester CONSULT-III.
OPERATION
It detects a shock that exceeds specified level and monitors such systems as the driver and passenger air
bag, side air bag, curtain air bag, pre-tensioner seat belts and Occupant Classification System (OCS) operate
properly.
STRUCTURE
It contains the “G” sensors for both for frontal and side collisions and spare battery function in case of main
battery damage in collision.
INSTALLATION
Air bag diagnosis sensor unit is installed under the center console with fixed bolts.
DTC Logic
INFOID:0000000003591764
DTC DETECTION LOGIC
With CONSULT-III
DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
DTC CONFIRMATION PROCEDURE (WITH CONSULT-III)
1.
CHECK SELF-DIAG RESULT
1.
Turn ignition switch ON.
2.
Check the screen of CONSULT-III.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
DTC CONFIRMATION PROCEDURE (WITHOUT CONSULT-III)
NOTE:
• SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.
CHECK AIR BAG WARNING LAMP
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status.
Is malfunctioning part detected?
YES
>> Refer to warning lamp flash code chart. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003591765
WITH CONSULT-III
WARNING:
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1042
B1043
B1044
B1045
B1046
B1047
CONTROL UNIT
Air bag diagnosis sensor unit is out of
order or mis-match
• Internal breakdown in air bag diag-
nosis sensor unit
• Mis-match between specification on
vehicle and configuration in air bag
diagnosis sensor unit
B1042, B1043, B1044, B1045, B1046, B1047 DIAGNOSIS SENSOR UNIT
SRC-39
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
• Do not use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.
CHECK HARNESS CONNECTOR
Check the connection of 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?
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
CHECK AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
2.
Check “Self diagnostic result” with CONSULT-III.
3.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
SRC-40
< COMPONENT DIAGNOSIS >
B1049, B1054 DRIVER AIRBAG MODULE
B1049, B1054 DRIVER AIRBAG MODULE
Description
INFOID:0000000003591767
DTC B1049, B1054 [OPEN] DRIVER AIRBAG MODULE
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 and introduces the chemical reaction of gas generating materials to
generate 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:0000000003591768
DTC DETECTION LOGIC
With CONSULT-III
DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
DTC CONFIRMATION PROCEDURE (WITH CONSULT-III)
1.
CHECK SELF-DIAG RESULT
1.
Turn ignition switch ON.
2.
Check the screen of CONSULT-III.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
DTC CONFIRMATION PROCEDURE (WITHOUT CONSULT-III)
NOTE:
• SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.
CHECK AIR BAG WARNING LAMP
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status.
Is malfunctioning part detected?
YES
>> Refer to warning lamp flash code chart. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003591769
WITH CONSULT-III
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1049
B1054
DRIVER AIRBAG MOD-
ULE
[OPEN]
Driver air bag module circuit is open
(including the spiral cable)
• Disconnection of wiring harness and
open
• Internal breakdown in driver air bag
module
• Internal breakdown in spiral cable
• Internal breakdown in air bag diag-
nosis sensor unit
B1049, B1054 DRIVER AIRBAG MODULE
SRC-41
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
• Do not use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.
CHECK HARNESS CONNECTOR
Check the connection of 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.
NO
>> Replace wiring harness.
3.
CHECK SPIRAL CABLE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver side air bag module harness connector and body side harness connector.
3.
Check continuity between driver side air bag module harness connector and body side harness connec-
tor.
4.
Check continuity between driver side air bag module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace spiral cable. Refer to
4.
CHECK DRIVER AIR BAG MODULE
1.
Replace driver air bag module. Refer to
2.
Check “Self diagnostic result” with CONSULT-III.
3.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 5.
NO
>> INSPECTION END
5.
CHECK AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace driver air bag diagnosis sensor unit. Refer to
2.
Check “Self diagnostic result” with CONSULT-III.
3.
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
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