Infiniti EX35. Manual — part 1374
SRC-122
< COMPONENT DIAGNOSIS >
B1202, B1203, B1204, B1205, B1206, B1207 DIAGNOSIS SENSOR UNIT
B1202, B1203, B1204, B1205, B1206, B1207 DIAGNOSIS SENSOR UNIT
Description
INFOID:0000000003591916
DTC B1202, B1203, B1204, B1205, B1206, B1207 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 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:0000000003591917
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
SRC-122, "Diagnosis Procedure"
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:0000000003591918
WITH CONSULT-III
WARNING:
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1202
B1203
B1204
B1205
B1206
B1207
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
B1202, B1203, B1204, B1205, B1206, B1207 DIAGNOSIS SENSOR UNIT
SRC-123
< 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-124
< COMPONENT DIAGNOSIS >
B1209 FRONTAL COLLISION DETECTION
B1209 FRONTAL COLLISION DETECTION
Description
INFOID:0000000003591919
DTC B1209 FRONTAL COLLISION DETECTION
When detect a component damage resulting from a front collision, blinks or illuminates the air bag warning
lamp to inform the driver. Malfunctioning can be detected by the CONSULT-III.
OPERATION
The air bags and seat belt pre-tensioners for driver and front passenger are operated by the decision of the air
bag diagnosis sensor unit out signal transmitted because of the frontal collision.
STRUCTURE
It consists of crash zone sensor, air bag diagnosis sensor unit, air bags and seat belt pre-tensioners for driver
and front passenger.
INSTALLATION
Refer to
SR-12, "Removal and Installation"
SR-16, "Removal and Installation"
,
SR-8, "Removal and Installation"
,
SR-18, "Removal and Installation"
DTC Logic
INFOID:0000000003591920
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
SRC-124, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003591921
WITH CONSULT-III
WARNING:
• 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 FRONT AIR BAG MODULE
Check front air bag modules. (driver air bag module and/or front passenger air bag module.)
Is the front air bag module deployed?
YES
>> Replace front air bag modules. Refer to
SR-4, "Removal and Installation"
NO
>> GO TO 2.
2.
CHECK FRONT SEAT BELT PRE-TENSIONER
Check front seat belt pre-tensioner.
Is the front seat belt pre-tensioner activated?
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1209
FRONTAL COLLISION
DETECTION
Front seat belt pre-tensioner, front air
bag is deployed
—
B1209 FRONTAL COLLISION DETECTION
SRC-125
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
YES
>> Replace front seat belt pre-tensioner. Refer to
SR-18, "Removal and Installation"
.
NO
>> GO TO 3.
3.
CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Check air bag diagnosis sensor unit.
Is the front air bag module and/or front seat belt pre-tensioner activated?
YES
>> Replace air bag diagnosis sensor unit. Refer to
SR-16, "Removal and Installation"
.
NO
>> GO TO 4.
4.
CHECK STEERING WHEEL
Check steering wheel.
Is the steering wheel normal?
YES
>> GO TO 5.
NO
>> Replace steering wheel. Refer to
ST-16, "Removal and Installation"
5.
CHECK SPIRAL CABLE
1.
Check the continuity of spiral cable.Refer to
2.
Operate the steering wheel to check excessive heavy operation force, abnormal noise or damage.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace spiral cable. Refer to
SR-6, "Removal and Installation"
6.
CHECK WIRING HARNESS/HARNESS CONNECTOR
Check wiring harness/harness connector.
Is the wiring harness/harness connector normal?
YES
>> GO TO 7.
NO
>> Replace wiring harness/harness connector.
7.
FINAL CHECK
Check the screen of CONSULT-III and/or Air bag warning lamp status.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Check the intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
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