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SRS

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H RESTRAINTS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SECTION SRS B

E
CONTENTS
PRECAUTIONS ......................................................... 3 . DIAGNOSTIC PROCEDURE 3 .......................... 27 . F
Precautions for Supplemental Restraint System DIAGNOSTIC PROCEDURE 4 .......................... 29 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- DIAGNOSTIC PROCEDURE 5 .......................... 29 .
SIONER" ................................................................. 3. Trouble Diagnosis Without CONSULT-II ................ 34 . G
Precautions for SRS "AIR BAG" and "SEAT BELT DIAGNOSTIC PROCEDURE 6 .......................... 34 .
PRE-TENSIONER" Service .................................... 3 . WARNING LAMP FLASH CODE CHART .......... 35 .
Occupant Classification System Precaution ........... 3 . Trouble Diagnosis: "AIR BAG" Warning Lamp Does
SRS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ...... 4 . Not Turn Off ........................................................... 39
.
SRS Configuration .................................................. 4 . DIAGNOSTIC PROCEDURE 7 .......................... 39 .
Driver Air Bag Module ............................................. 5 . Trouble Diagnosis: "AIR BAG" Warning Lamp Does
Front Passenger Air Bag Module ............................ 5 . Not Turn On ........................................................... 40
. I
Front Side Air Bag ................................................... 5 . DIAGNOSTIC PROCEDURE 8 .......................... 40 .
Side Curtain Air Bag ................................................ 5 . DRIVER AIR BAG MODULE ................................... 41 .
Front Seat Belt Pre-tensioner with Load Limiter ..... 6 Removal and Installation ....................................... 41 . J
Occupant Classification System (OCS) .................. 6 . REMOVAL .......................................................... 41
.
Direct-connect SRS Component Connectors .......... 8 . INSTALLATION .................................................. 42 .
TROUBLE DIAGNOSIS ............................................. 9 . SPIRAL CABLE ....................................................... 44.
K
Trouble Diagnosis Introduction ................................ 9 . Removal and Installation ....................................... 44 .
DIAGNOSIS FUNCTION ...................................... 9 . REMOVAL .......................................................... 44
.
HOW TO PERFORM TROUBLE DIAGNOSES INSTALLATION .................................................. 45 .
FOR QUICK AND ACCURATE REPAIR .............. 9 . FRONT PASSENGER AIR BAG MODULE ............. 46 . L
WORK FLOW ..................................................... 10 . Removal and Installation ....................................... 46 .
SRS Components Parts Location ...........................11 . REMOVAL .......................................................... 46
.
Schematic ............................................................. 12 . INSALLATION .................................................... 46. M
Wiring Diagram -- SRS -- .................................... 13 . SIDE CURTAIN AIR BAG MODULE ....................... 47 .
CONSULT-II Function (AIR BAG) .......................... 19 . Removal and Installation ....................................... 47 .
HOW TO CHANGE BETWEEN SELF-DIAGNO- REMOVAL .......................................................... 47
.
SIS MODE AND USER MODE WITH CONSULT- INSTALLATION .................................................. 48 .
II ......................................................................... 19
. CRASH ZONE SENSOR .......................................... 49 .
HOW TO ERASE SELF-DIAGNOSIS RESULTS 20 ... Removal and Installation ....................................... 49 .
Self-Diagnosis Function (Without CONSULT-II) .... 20 . REMOVAL .......................................................... 49
.
HOW TO CHANGE BETWEEN USER MODE INSTALLATION .................................................. 49 .
AND SELF-DIAGNOSIS MODE WITHOUT SIDE AIR BAG (SATELLITE) SENSOR .................. 50 .
CONSULT-II ....................................................... 21 . Removal and Installation ....................................... 50 .
HOW TO ERASE SELF-DIAGNOSIS RESULTS 21 ... REMOVAL .......................................................... 50
.
SRS Operation Check ........................................... 21 . INSTALLATION .................................................. 50 .
DIAGNOSTIC PROCEDURE 1 .......................... 21 . FRONT SEAT BELT PRE-TENSIONER .................. 51 .
Trouble Diagnosis With CONSULT-II .................... 23 . Removal and Installation ....................................... 51 .
DIAGNOSTIC PROCEDURE 2 .......................... 23 .

Revision: June 2006 SRS-1 2007 Versa
DIAGNOSIS SENSOR UNIT .................................... 52 . SRS INSPECTION (FOR FRONTAL COLLI-
Removal and Installation ....................................... 52 . SION) ..................................................................54
.
REMOVAL .......................................................... 52
. For Side and Rollover Collision ..............................55 .
INSTALLATION ................................................... 52. WHEN SRS IS ACTIVATED IN THE SIDE OR
ECU DISCRIMINATED NO. ................................ 52 . ROLLOVER COLLISION ....................................55 .
OCCUPANT CLASSIFICATION SYSTEM CON- WHEN SRS IS NOT ACTIVATED IN THE SIDE
TROL UNIT ............................................................... 53
. OR ROLLOVER COLLISION ..............................55 .
Removal and Installation ....................................... 53 . SRS INSPECTION (FOR SIDE AND ROLLOVER
COLLISION DIAGNOSIS ......................................... 54 . COLLISION) ........................................................56.
For Frontal Collision ............................................... 54
.

Revision: June 2006 SRS-2 2007 Versa
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EHS001XL

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
G 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
G 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
G 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
EHS001XM

G Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual. SRS
G 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.
G The air bag diagnosis sensor unit must always be installed with the arrow mark "" pointing toward the
front of the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or J
rust before installation and replace as required.
G The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear. K
G 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
G Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
G After air bag inflates, the front instrument panel assembly should be replaced if damaged.
G Do not reuse center pillar upper garnish if removed. M

Occupant Classification System Precaution EHS001XN

Replace control unit and passenger front seat cushion as an assembly.

Revision: June 2006 SRS-3 2007 Versa
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) PFP:28556

SRS Configuration EHS001UR

WHIA0186E

The air bag deploys if the air bag diagnosis sensor unit is activated while the ignition switch is in the ON or
START position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module, front passenger air bag module and front seat belt pre-tension-
ers are activated in a frontal collision but not in a side collision.
SRS configurations for some collision modes are as follows:
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module

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