Infiniti FX35, FX50 (S51). Manual — part 1745
B1209 FRONTAL COLLISION DETECTION
SRC-145
< DTC/CIRCUIT DIAGNOSIS >
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B1209 FRONTAL COLLISION DETECTION
Description
INFOID:0000000005241244
DTC B1209 FRONTAL COLLISION DETECTION
When crash zone sensor detects component damage resulting from a front collision, the system blinks or illu-
minates the air bag warning lamp to inform the driver. Malfunctioning can be detected by CONSULT-III.
OPERATION
The air bags and seat belt pre-tensioners for driver and front passenger are activated by the air bag diagnosis
sensor unit signal transmitted at the time 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
(Driver air bag module),
(Front passenger air bag
module),
(Air bag diagnosis sensor
SB-6, "SEAT BELT RETRACTOR : Exploded View"
(Front LH/RH seat belt pre-tensioner).
DTC Logic
INFOID:0000000005241245
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
SRC-145, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005510865
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3
minutes or more. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
PERFORM COLLISION DIAGNOSIS
Perform collision diagnosis.Refer to
SR-5, "FOR FRONTAL COLLISION : When SRS is activated in a colli-
SR-6, "FOR FRONTAL COLLISION : When SRS is not activated in a collision"
.
Iscollision diagnosis complete?
YES
>> GO TO 2.
NO
>> INSPECTION END
2.
FINAL INSPECTION
Perform “AIR BAG” Self Diagnostic Result.
Is the inspection result normal?
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1209
FRONTAL COLLISION
DETECTION
Front seat belt pre-tensioner, front air
bag is deployed
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SRC-146
< DTC/CIRCUIT DIAGNOSIS >
B1209 FRONTAL COLLISION DETECTION
YES
>> INSPECTION END
NO
>> Peform diagnosis of applicable DTC.Refer to
.
B1210 SIDE COLLISION DETECTION
SRC-147
< DTC/CIRCUIT DIAGNOSIS >
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B1210 SIDE COLLISION DETECTION
Description
INFOID:0000000005241247
DTC B1210 SIDE COLLISION DETECTION
When satellite sensor detects component damage resulting from a side collision, blinks or illuminates the air
bag warning lamp to inform the driver. Malfunctioning can be detected by CONSULT-III.
OPERATION
The front side air bag and side curtain air bag are activated by the air bag diagnosis sensor unit signal trans-
mitted at the time of the side collision.
STRUCTURE
It consists of satellite sensor, air bag diagnosis sensor unit, front side air bag and side curtain air bag.
INSTALLATION
(Front LH/RH side air bag module),
(Side curtain air
(LH/RH satellite sensor).
DTC Logic
INFOID:0000000005241248
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
SRC-147, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005510866
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3
minutes or more. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
PERFORM COLLISION DIAGNOSIS
Perform collision diagnosis.Refer to
SR-7, "FOR SIDE AND ROLLOVER COLLISION : When SRS is activated
or
SR-8, "FOR SIDE AND ROLLOVER COLLISION : When SRS is not activated in a collision"
Iscollision diagnosis complete?
YES
>> GO TO 2.
NO
>> INSPECTION END
2.
FINAL INSPECTION
Perform “AIR BAG” Self Diagnostic Result.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Peform diagnosis of applicable DTC.Refer to
.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1210
SIDE COLLISION DE-
TECTION
Front side air bag, side curtain air bag is
deployed
—
SRC-148
< DTC/CIRCUIT DIAGNOSIS >
B1211 ROLLOVER DETECTION
B1211 ROLLOVER DETECTION
Description
INFOID:0000000005241250
DTC B1211 ROLLOVER DETECTION
When detect component damage resulting from a rollover, brinks or illuminates the air bag warning lamp to
inform the driver. Malfunctioning can be detected by CONSULT-III.
OPERATION
The front seat belt pre-tensioner and side curtain air bag are operated by the decision of the air bag diagnosis
sensor unit signal of the rollover.
STRUCTURE
It consists of front seat belt pre-tensioner, side curtain air bag and air bag diagnosis sensor unit.
INSTALLATION
SB-6, "SEAT BELT RETRACTOR : Exploded View"
(Seat belt pre-tensioner),
(Side curtain air bag) and
(Air bag diagnosis sensor unit).
DTC Logic
INFOID:0000000005241251
DTC DETECTION LOGIC
With CONSULT-III
DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
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
SRC-148, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005510867
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3
minutes or more. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
PERFORM COLLISION DIAGNOSIS
Perform collision diagnosis.Refer to
SR-7, "FOR SIDE AND ROLLOVER COLLISION : When SRS is activated
SR-8, "FOR SIDE AND ROLLOVER COLLISION : When SRS is not activated in a collision"
.
Iscollision diagnosis complete?
YES
>> GO TO 2.
NO
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1211
ROLLOVER DETEC-
TION
Front seat belt pre-tensioner. side cur-
tain air bag module are deployed be-
cause of rollover detection
—
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