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srs

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

H RESTRAINTS

B
SECTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) C

E
CONTENTS
PRECAUTIONS ......................................................... 3 . SRS Operation Check ........................................... 20 . F
Precautions for Supplemental Restraint System DIAGNOSTIC PROCEDURE 1 .......................... 20 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Trouble Diagnosis with CONSULT-II ..................... 22 .
SIONER" ................................................................. 3
. DIAGNOSTIC PROCEDURE 2 .......................... 22 . G
Precautions for SRS "AIR BAG" and "SEAT BELT DIAGNOSTIC PROCEDURE 3 .......................... 27 .
PRE-TENSIONER" Service .................................... 3 . DIAGNOSTIC PROCEDURE 4 (CONTINUED
Occupant Classification System Precaution ........... 3 . FROM DIAGNOSTIC PROCEDURE 2) ............. 29 .
SRS
PREPARATION .......................................................... 4 . DIAGNOSTIC PROCEDURE 5 .......................... 29 .
Commercial Service Tools ....................................... 4 . Trouble Diagnosis without CONSULT-II ................ 35 .
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ...... 5 . DIAGNOSTIC PROCEDURE 6 .......................... 35 .
SRS Configuration .................................................. 5 . WARNING LAMP FLASH CODE CHART .......... 35 . I
Front Seat Belt Pre-Tensioner with Load Limiter ..... 6 Trouble Diagnosis: "AIR BAG" Warning Lamp Does
Front Side Air Bag ................................................... 6 . Not Turn OFF ........................................................ 39
.
Side Curtain Air Bag ................................................ 6 . DIAGNOSTIC PROCEDURE 7 .......................... 39 . J
Occupant Classification System (OCS) .................. 7 . Trouble Diagnosis: "AIR BAG" Warning Lamp Does
Passenger Air Bag Status Condition ....................... 7 . Not Turn ON .......................................................... 40
.
Component Parts of Occupant Classification Sys- DIAGNOSTIC PROCEDURE 8 .......................... 40 .
K
tem .......................................................................... 7
. Trouble Diagnosis: Passenger Seatbelt Warning
Passenger Seatbelt Warning System ...................... 7 . System ................................................................... 41
.
SYSTEM DESCRIPTION ..................................... 7 . DRIVER AIR BAG MODULE ................................... 42 .
TROUBLE DIAGNOSIS ............................................. 8 . Removal and Installation ....................................... 42 . L
Trouble Diagnosis Introduction ................................ 8 . REMOVAL .......................................................... 42.
DIAGNOSIS FUNCTION ...................................... 8 . INSTALLATION .................................................. 43 .
HOW TO PERFORM TROUBLE DIAGNOSIS SPIRAL CABLE ....................................................... 44 . M
FOR QUICK AND ACCURATE REPAIR .............. 8 . Removal and Installation ....................................... 44 .
WORK FLOW ....................................................... 9 . REMOVAL .......................................................... 44.
Component Parts Location .................................... 10 . INSTALLATION .................................................. 45 .
Schematic ..............................................................11
. FRONT PASSENGER AIR BAG MODULE ............. 46 .
Wiring Diagram -- SRS -- .................................... 12 . Removal and Installation ....................................... 46 .
CONSULT-II Function ........................................... 18 . REMOVAL .......................................................... 46.
DIAGNOSIS MODE FOR CONSULT-II .............. 18 . INSTALLATION .................................................. 47 .
HOW TO CHANGE SELF-DIAGNOSIS MODE SIDE CURTAIN AIR BAG MODULE ....................... 48 .
WITH CONSULT-II ............................................. 18 . Removal and Installation ....................................... 48 .
HOW TO ERASE SELF-DIAGNOSTIC REMOVAL .......................................................... 48.
RESULTS ........................................................... 19 . INSTALLATION .................................................. 49 .
Self-Diagnosis Function (Without CONSULT-II) .... 19 . CRASH ZONE SENSOR .......................................... 50 .
HOW TO CHANGE SELF-DIAGNOSIS MODE Removal and Installation ....................................... 50 .
WITHOUT CONSULT-II ..................................... 19 . REMOVAL .......................................................... 50.
HOW TO ERASE SELF-DIAGNOSIS RESULTS 19 ... INSTALLATION .................................................. 50 .

Revision: 2006 July SRS-1 2007 FX35/FX45
SIDE AIR BAG (SATELLITE) SENSOR .................. 51 . TROL UNIT ...............................................................54
.
Removal and Installation ....................................... 51
. Removal and Installation ........................................54 .
REMOVAL .......................................................... 51
. COLLISION DIAGNOSIS .........................................55 .
INSTALLATION ................................................... 51
. For Frontal Collision ...............................................55
.
FRONT SEAT BELT PRE-TENSIONER .................. 52 . SRS INSPECTION (FOR FRONTAL COLLI-
Removal and Installation ....................................... 52
. SION) ..................................................................55
.
DIAGNOSIS SENSOR UNIT .................................... 53 . For Side Collision ...................................................57
.
Removal and Installation ....................................... 53
. WHEN THE SIDE AIR BAG IS ACTIVATED IN
REMOVAL .......................................................... 53
. THE SIDE COLLISION: ......................................57 .
INSTALLATION ................................................... 53
. WHEN SRS IS NOT ACTIVATED IN THE SIDE
ECU DISCRIMINATED NO. ................................ 53 . COLLISION: ........................................................57.
OCCUPANT CLASSIFICATION SYSTEM CON- SRS INSPECTION (FOR SIDE COLLISION) .....57 .

Revision: 2006 July SRS-2 2007 FX35/FX45
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NHS00073

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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 and SB section of this Service Man-
ual.
WARNING: D
q 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 per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q 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
harness connectors.
G
Precautions for SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
NHS00074

q Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual. SRS
q 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 removed, it is still possible for the air bag and seat belt I
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.
q 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 instal- J
lation and replace as required.
q The spiral cable must be aligned with the neutral position since its rotations are limited. Do not turn steer-
ing wheel and column after removal of steering gear. K
q 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. L
q Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
q After air bag inflates, the front instrument panel assembly should be replaced if damaged.
q Always replace instrument panel pad following front passenger air bag deployment. M
q Disposal, recycling, and transportation of air bag modules and seat belt pre-tensioners should be per-
formed in compliance with applicable federal, state and local laws and regulations.
Occupant Classification System Precaution NHS0009N

Replace occupant classification system control unit and passenger front seat cushion as an assembly.
Refer to Refer to Service Manual .

Revision: 2006 July SRS-3 2007 FX35/FX45
PREPARATION

PREPARATION PFP:00002

Commercial Service Tools NHS00075

Tool name Description

Tamper resistant TORX bit Size: T30/T50

S-NT757

Revision: 2006 July SRS-4 2007 FX35/FX45
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) PFP:28556
A
SRS Configuration NHS00076

SRS

PHIA1120E

J
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- K
lision but not in a side collision.
SRS configurations which are activated for some collision modes are as follows:
L
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module

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