Infiniti FX35, FX50 (S51). Manual — part 1602
SBC-66
< SYMPTOM DIAGNOSIS >
PRE-CRASH SEAT BELT DOSE NOT OPERATE
YES
>> Check intermittent incident. Refer to
GI-36, "Intermittent Incident"
.
NO
>> GO TO 1.
SEAT BELT WARNING LAMP DOES NOT TURN OFF
SBC-67
< SYMPTOM DIAGNOSIS >
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SEAT BELT WARNING LAMP DOES NOT TURN OFF
Diagnosis Procedure
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1.
CHECK SEAT BELT BUCKLE SWITCH CIRCUIT (DRIVER SIDE)
Check seat belt buckle switch circuit (driver side). Refer to
SBC-41, "SEAT BELT WARNING LAMP SYSTEM :
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
.CHECK SEAT BELT BUCKLE SWITCH CIRCUIT (PASSENGER SIDE)
Check seat belt buckle switch circuit (passenger side). Refer to
SBC-37, "SEAT BELT WARNING LAMP SYS-
TEM : Component Function Check"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK SEAT BELT WARNING LAMP CIRCUIT
Check seat belt warning lamp circuit. Refer to
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the malfunctioning parts.
4.
CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-36, "Intermittent Incident"
.
NO
>> GO TO 1.
SBC-68
< SYMPTOM DIAGNOSIS >
SEAT BELT WARNING LAMP DOES NOT TURN ON
SEAT BELT WARNING LAMP DOES NOT TURN ON
Diagnosis Procedure
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1.
CHECK SELF DIAGNOSIS RESULT
Perform “COMBINATION METER” self diagnostic result. Refer to
MWI-45, "CONSULT-III Function (METER/
Is DTC detected?
YES
>> Repair or replace the malfunctioning parts.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY
Check fuse are not blown.
Check ignition power supply of combination meter. Refer to
MWI-58, "COMBINATION METER : Diagnosis
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK SEAT BELT BUCKLE SWITCH CIRCUIT (DRIVER SIDE)
Check seat belt buckle switch circuit (driver side). Refer to
SBC-41, "SEAT BELT WARNING LAMP SYSTEM :
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the malfunctioning parts.
4.
.CHECK SEAT BELT BUCKLE SWITCH CIRCUIT (PASSENGER SIDE)
Check seat belt buckle switch circuit (passenger side). Refer to
SBC-37, "SEAT BELT WARNING LAMP SYS-
TEM : Component Function Check"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace the malfunctioning parts.
5.
CHECK SEAT BELT WARNING LAMP CIRCUIT
Check ground circuit. Refer to
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace the malfunctioning parts.
6.
CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-36, "Intermittent Incident"
.
NO
>> GO TO 1.
PRECAUTIONS
SBC-69
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Seat Belt Service
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CAUTION:
• Before removing the seat belt pre-tensioner assembly, turn the ignition switch off, disconnect the
both battery cables and wait at least 3 minutes.
• Do not use electrical test equipment for seat belt pre-tensioner connector.
• After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting front seat belt pre-
tensioner connector, check the system function. Refer to
SRC-16, "Diagnosis Description"
• Do not use disassemble buckle or seat belt assembly.
• Replace anchor bolts if they are deformed or worn out.
• Never oil tongue and buckle.
• If any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt
assembly.
• If webbing is cut, frayed, or damaged, replace seat belt assembly.
• When replacing seat belt assembly, use a genuine NISSAN seat belt assembly.
AFTER A COLLISION
WARNING:
Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the col-
lision was minor and the belts show no damage and continue to operate properly. Failure to do so
could result in serious personal injury in an accident. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or improper operation is noted. Seat belt pre-tensioner
should be replaced even if the seat belts are not in use during a frontal collision in which the air bags
are deployed.
Replace any seat belt assembly (including anchor bolts) if:
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