Infiniti G37 Coupe. Manual — part 1206
![](/vehicles/zatt/keash/ckiif/ens.png)
SRC-74
< COMPONENT DIAGNOSIS >
B1086 PRE-TEN FRONT LH
>> GO TO 2.
2.
CHECK AIR BAG WARNING LAMP
Check the warning lamp status.
Is malfunctioning part detected?
YES
>> Refer to
.
NO
>> INSPECTION END.
Diagnosis Procedure (Component diagnosis)
INFOID:0000000001694562
With CONSULT-lll
WARNING:
• Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least 3 min-
utes. (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
>> Repair or 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 FRONT SEAT BELT PRE-TENSIONER
1.
Replace front LH seat belt pre-tensioner.
2.
Check the screen of CONSULT-lll.
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> Check the intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
![](/vehicles/zatt/keash/ckiif/erelong.png)
B1087 PRE-TEN FRONT LH
SRC-75
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
B1087 PRE-TEN FRONT LH
Description
INFOID:0000000001694563
DTC B1087 [VB-SHORT] PRE-TEN FRONT LH
For front LH seat belt pre-tensioner, crash is judged by main “G” sensor output signal and sub “G” sensor in
front direction.
OPERATION
In the case of a frontal collision that exceeds specified impact level, the diagnosis sensor unit detects the
deceleration caused by collision. If 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 LH seat belt pre-tensioner is installed on the underside of center pillar with fixed nuts.
DTC Logic
INFOID:0000000001694564
DTC DETECTION LOGIC
With CONSULT-lll
DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.
INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.
CHECK SELF-DIAG RESULT
Check the screen of CONSULT-lll.
Is malfunctioning part detected?
YES
>> Refer to
SRC-76, "Diagnosis Procedure (Component diagnosis)"
NO
>> INSPECTION END.
DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)
NOTE:
• SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.
INSPECTION START
Turn ignition switch ON.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1087
PRE-TEN FRONT LH
[VB-SHORT]
Front LH seat belt pre-tensioner circuit
is shorted to some power supply circuit.
• Disconnection of wiring harness and
short.
• Internal breakdown in front LH seat
belt pre-tensioner.
• Internal breakdown in diagnosis sen-
sor unit (ACU).
![](/vehicles/zatt/keash/ckiif/hechir.png)
SRC-76
< COMPONENT DIAGNOSIS >
B1087 PRE-TEN FRONT LH
>> GO TO 2.
2.
CHECK AIR BAG WARNING LAMP
Check the warning lamp status.
Is malfunctioning part detected?
YES
>> Refer to
.
NO
>> INSPECTION END.
Diagnosis Procedure (Component diagnosis)
INFOID:0000000001694565
With CONSULT-lll
WARNING:
• Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least 3 min-
utes. (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
>> Repair or replace harness connector.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace wiring harness.
3.
CHECK FRONT SEAT BELT PRE-TENSIONER
1.
Replace front LH seat belt pre-tensioner.
2.
Check the screen of CONSULT-lll.
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> Check the intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
![](/vehicles/zatt/keash/ckiif/stah.png)
B1088 PRE-TEN FRONT LH
SRC-77
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
B1088 PRE-TEN FRONT LH
Description
INFOID:0000000001694566
DTC B1088 [GND-SHORT] PRE-TEN FRONT LH
For front LH seat belt pre-tensioner, crash is judged by main “G” sensor output signal and sub “G” sensor in
front direction.
OPERATION
In the case of a frontal collision that exceeds specified impact level, the diagnosis sensor unit detects the
deceleration caused by collision. If 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 LH seat belt pre-tensioner is installed on the underside of center pillar with fixed nuts.
DTC Logic
INFOID:0000000001694567
DTC DETECTION LOGIC
With CONSULT-lll
DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.
INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.
CHECK SELF-DIAG RESULT
Check the screen of CONSULT-lll.
Is malfunctioning part detected?
YES
>> Refer to
SRC-78, "Diagnosis Procedure (Component diagnosis)"
NO
>> INSPECTION END.
DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)
NOTE:
• SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.
INSPECTION START
Turn ignition switch ON.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1088
PRE-TEN FRONT LH
[GND-SHORT]
Front LH seat belt pre-tensioner circuit
is shorted to ground.
• Disconnection of wiring harness and
short.
• Internal breakdown in front LH seat
belt pre-tensioner.
• Internal breakdown in diagnosis sen-
sor unit (ACU).
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