2008 INFINITI FX35 belt

SRS-1
RESTRAINTS
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SECTION SRS
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CONTENTS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SERVICE INFORMATION .. ..........................2
DTC INDEX ..................................................... .....2
B1001-B1015 ...................................................... ......2
B1017-B1035 ............................................................2
B1042-B1057 ............................................................3
B1058-B1073 ............................................................3
B1074-B1089 ............................................................4
B1106-B1120 ............................................................4
B1122-B1137 ............................................................5
B1138-B1153 ............................................................5
B1202-B1210 ............................................................5
PRECAUTIONS ...................................................7
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
7
Precaution for SRS "AIR BAG" and "SEAT BELT
PRE-TENSIONER" Service ......................................
7
Occupant Classification System Precaution .............7
PREPARATION ...................................................8
Commercial Service Tool .................................... ......8
SUPPLEMENTAL RESTRAINT SYSTEM
(SRS) ...................................................................
9
SRS Configuration .............................................. ......9
Front Seat Belt Pre-tensioner with Load Limiter .....10
Front Side Air Bag ...................................................10
Side Curtain Air Bag ................................................10
Occupant Classification System (OCS) ..................10
Passenger Air Bag Status Condition .......................11
Component Parts of Occupant Classification Sys-
tem ..........................................................................
11
TROUBLE DIAGNOSIS .....................................12
Trouble Diagnosis Introduction ........................... ....12
Component Parts Location ......................................14
Schematic ...............................................................15
Wiring Diagram - SRS - ...........................................16
CONSULT-III Function ........................................
....21
Self-Diagnosis Function (Without CONSULT-III) .....22
SRS Operation Check .............................................23
Trouble Diagnosis with CONSULT-III ......................24
Trouble Diagnosis without CONSULT-III .................28
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn OFF .................................................
32
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn ON ...................................................
32
DRIVER AIR BAG MODULE ............................34
Removal and Installation .........................................34
SPIRAL CABLE ................................................36
Removal and Installation .........................................36
FRONT PASSENGER AIR BAG MODULE ......38
Removal and Installation .........................................38
SIDE CURTAIN AIR BAG MODULE ................40
Removal and Installation .........................................40
CRASH ZONE SENSOR ...................................42
Removal and Installation ..................................... ....42
SIDE AIR BAG (SATELLITE) SENSOR ...........43
Removal and Installation .........................................43
DIAGNOSIS SENSOR UNIT .............................44
Removal and Installation .........................................44
FRONT SEAT BELT PRE-TENSIONER ...........45
Removal and Installation .........................................45
OCCUPANT CLASSIFICATION SYSTEM
CONTROL UNIT ................................................
46
Removal and Installation .........................................46
COLLISION DIAGNOSIS ..................................47
For Frontal Collision ................................................47
For Side Collision ....................................................48
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SRS-2
< SERVICE INFORMATION >
DTC INDEX
SERVICE INFORMATION
DTC INDEX
B1001-B1015INFOID:0000000001524145
B1017-B1035INFOID:0000000001524146
DTC Items (CONSULT screen terms) Reference
B1001
DIAGNOSIS SENSOR UNIT SRS-24, "
Trouble Diagnosis with CONSULT-III"
B1002
B1003
B1004
B1005
B1006
B1007
B1008
B1009
B1010
B1011
B1012
B1013
B1014
B1015
DTC Items (CONSULT sc reen terms) Reference
B1017 OCCUPANT SENSOR C/U
SRS-24, "
Trouble Diagnosis with CONSULT-III"
B1018 OCCUPANT SENS
B1019 BELT TENSION SENS
B1020OCCUPANT SENSOR C/U
B1021
B1022 OCCUPANT SENS C/U
B1023 PASS A/B INDCTR CKT
B1026
DIAGNOSIS SENSOR UNIT
B1027
B1028
B1029
B1030
B1031
B1033
CRASH ZONE SEN
B1034
B1035
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PRECAUTIONSSRS-7
< SERVICE INFORMATION >
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PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612877
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, 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 in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution for SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
INFOID:0000000001327741
 Do not use electrical test equipment to check SRS ci rcuits unless instructed to in this Service Manual.
 Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
For approximately 3 minutes after the cables are remov ed, it is still possible for the air bag and seat belt pre-
tensioner to deploy. Therefore, do not work on any SR S connectors or wires until at least 3 minutes have
passed.
 Diagnosis sensor unit must always be installed with their arrow marks “ ⇐” pointing towards the front of the
vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before installa-
tion and replace as required.
 The spiral cable must be aligned with the neutral position since its rotations are limited. Do not turn steering
wheel and column after removal of steering gear.
 Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.
 Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
 After air bag inflates, the front instrument panel assembly should be replaced if damaged.
 Always replace instrument panel pad following front passenger air bag deployment.
 Disposal, recycling, and transportation of air bag m odules and seat belt pre-tensioners should be performed
in compliance with applicable federal, state and local laws and regulations.
Occupant Classification System PrecautionINFOID:0000000001327742
Replace occupant classification system control uni t and passenger front seat cushion as an assembly.
Refer to Refer to Service Manual .
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)SRS-9
< SERVICE INFORMATION >
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS ConfigurationINFOID:0000000001524154
The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in the ON or START posi-
tion.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module and front passenger air bag module are activated in a frontal col-
lision but not in a side collision.
SRS configurations which are activated for some collision modes are as follows:
PHIA1120E
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module ×——
Front passenger air bag module ×——
Front LH seat belt pre-tensioner ×——
Front RH seat belt pre-tensioner ×——
Front LH side air bag module — ×—
Front RH side air bag module — — ×
LH side curtain air bag module — ×—
RH side curtain air bag module — — ×
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SRS-10
< SERVICE INFORMATION >
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Seat Belt Pre-te nsioner with Load Limiter
INFOID:0000000001524155
The seat belt pre-tensioner system wi th load limiter is installed for
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
Front Side Air BagINFOID:0000000001524156
Front side air bag is built-in type.
The front seatbacks with built-in type side air bag have the labels as
shown.
Side Curtain Air BagINFOID:0000000001524157
The side curtain air bags have the labels as shown.
Occupant Classification System (OCS)INFOID:0000000001524158
The occupant classification system identifies different si ze occupants, out of position occupants, and detects if
child seat is present in the front passenger seat. The oc cupant classification system receives inputs from the
occupant classification sensor (located inside the pa ssenger seat cushion assembly) and belt tension sensor
(part of the passenger front seat belt assembly and located at the belt anchor location). Depending on classifi-
cation of passenger, the occupant clas sification system sends a signal to the diagnosis sensor unit. The diag-
nosis sensor unit uses this signal to determine full, pa rtial, or non deployment of passenger front air bag in the
event of a collision. Depending on the signal received, the diagnosis sensor unit can disable the passenger
front air bag completely.
NOTE:
In case of customer concern, CONSULT-III can be used to confirm the passenger air bag status (readiness).
SRS444
SHIA0170E
BF-2006D
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)SRS-11
< SERVICE INFORMATION >
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Passenger Air Bag Status ConditionINFOID:0000000001524159
NOTE:
Passenger does not meet Ocuupant classification System specifications for passenger air bag activation.
Component Parts of Occupant Classification SystemINFOID:0000000001524160
Passenger Seatbelt Warning System
SYSTEM DESCRIPTION
This system warns when passenger seatbelt is not fasten.
This system is composed of the following items.
 Seatbelt warning lamp.
 Seatbelt buckle switch (passenger side).
 Air bag diagnosis sensor unit.
 Occupant classification system.
Seatbelt is warning lamp is used for both driver seatbelt warning and passenger seatbelt warning.
Seatbelt warning lamp turs ON when all conditions below are met.
 Driver seatbelt is fastend.
 Occupant is on passenger seat.
 Passenger seatbelt is not fasten.
Front Passenger Seat
(Condition) PASS AIR BAG OFF Indicator
(Status) Passenger Air Bag Status
(Readiness) CONSULT-III Display
Seat occupied OFF Active (enabled) ON
seat occupiedNOTE ON Deactivated (disabled) OFF
Seat empty OFF Deactivated (disabled) OFF
PHIA1334E
1. Occupant classification system con-
trol unit 2.Occupant classification system sen-
sor 3. Bladder
4. Front passenger air bag OFF indica-
tor (Cut off telltaile)
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SRS-14
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Is malfunctioning part detected?
YES >> GO TO 5.
NO >> Repeat DTC confirmation with diagnostic procedure.
5.REPAIR OR REPLACE
Repair or replace the malfunctioning part.
After the malfunctioning is repaired, eras e the self-diagnostic result. Refer to
SRS-21, "CONSULT-III Func-
tion".
>> GO TO 6.
6.FINAL CHECK DIAGNOSIS MODE AND USER MODE
Check the screen of CONSULT-III and/or Air bag warning lamp status.
Are the malfunctions corrected?
YES >> INSPECTION END .
NO >> GO TO 3 or GO TO 4.
Component Parts LocationINFOID:0000000001524162
PHIA1352E
1. Driver air bag module 2. Front passenger air bag module 3. Spiral cable
4. Front side air bag module (LH/RH) 5. Diagnosis sensor unit 6. Side air bag (Satellite) sensor (LH/
RH)
7. Seat belt pre-tensioner (LH/RH) 8. Seat belt buckle switch (LH/RH) 9. Side curtain air bag module
10. Crash zone sensor 11. Occupant classification system sen-
sor12.
Occupant classification system con-
trol unit
13. Belt tension sensor (passenger side)
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SRS-24
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Trouble Diagnosis with CONSULT-III
INFOID:0000000001524168
DIAGNOSTIC PROCEDURE
DTC No. Index (“SELF-DIAG [ CURRENT]” “SELF-DIAG [PAST]” or TROUBLE DIAG RECORD)
 Air bag is deployed.
 Seat belt pre-tensioner is deployed. Go to
SRS-47, "For Frontal Colli-
sion" or SRS-48, "For Side Collision"
 Diagnosis sensor unit is malfunction-
ing.
 Air bag power supply circuit is mal-
functioning.
 SRS air bag warning lamp circuit is malfunctioning. Go to
SRS-32, "
Trouble Diagnosis:
"AIR BAG" Warning Lamp Does Not
Turn OFF".
 Diagnosis sensor unit is malfunction- ing.
 Air bag warning lamp circuit is mal-
functioning. Go to
SRS-32, "
Trouble Diagnosis:
"AIR BAG" Warning Lamp Does Not
Turn ON".
“AIR BAG” warning lamp operation — User mode
—
SRS condition Reference item
SHIA0013E
SHIA0014E
Diagnostic mode Description
SELF-DIAG RESULT The self-d iagnosis result is Displayed. (SELF-DIAG [ CURRENT], [PAST], [RECORD])
ECU DISCRIMINATED No. The parts number of diagnosis sensor units displayed.
Diagnostic item Explanation Repair order
“Recheck SRS at each replacement”
NO DTC IS DETECT-
ED. When malfunction is in-
dicated by the “AIR
BAG” warning lamp in
User mode. Low battery voltage (Less than 9V)
 Self-diagnostic result “SELF-DIAG
[PAST]” (previously stored in the
memory) might not be erased after re-
pair.
 Intermittent malfunction has been de- tected in the past. Go to
SRS-21, "
CONSULT-III Func-
tion".
 No malfunction is detected. —
DIAGNOSIS SENSOR
UNIT (CONTROL UNIT)
[B1001-B1015]  Diagnosis sensor is out of order.  Replace diagnosis sensor unit.
(ACU)
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