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srs

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H RESTRAINTS

B
SECTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) C

E
CONTENTS
PRECAUTIONS ......................................................... 3 . DIAGNOSTIC PROCEDURE 5 .......................... 29 . F
Precautions for Supplemental Restraint System Trouble diagnosis without CONSULT-II. ................ 35 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- DIAGNOSTIC PROCEDURE 6 .......................... 35 .
SIONER" ................................................................. 3
. WARNING LAMP FLASH CODE CHART .......... 36 . G
Precautions for SRS "AIR BAG" and "SEAT BELT Trouble Diagnoses: "AIR BAG" Warning Lamp Does
PRE-TENSIONER" Service .................................... 3 . Not Turn Off ........................................................... 40
.
Occupant Classification System Precaution ........... 3 . DIAGNOSTIC PROCEDURE 6 .......................... 40 .
SRS
PREPARATION .......................................................... 4. Trouble Diagnoses: "AIR BAG" Warning Lamp Does
Special Service Tool ................................................ 4. Not Turn On ........................................................... 41
.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ...... 5 . DIAGNOSTIC PROCEDURE 7 .......................... 41 .
SRS Configuration .................................................. 5 . DRIVER AIR BAG MODULE ................................... 42 . I
Front Seat Belt Pre-tensioner with Load Limiter ..... 6 Removal and Installation ....................................... 42 .
Front Side Air Bag ................................................... 6
. REMOVAL .......................................................... 42
.
Side Curtain Air Bag ................................................ 6. INSTALLATION .................................................. 43 . J
Occupant Classification System (OCS) .................. 6 . SPIRAL CABLE ....................................................... 44.
Direct-connect SRS Component Connectors .......... 7 . Removal and Installation ....................................... 44 .
TROUBLE DIAGNOSIS ............................................. 8 . REMOVAL .......................................................... 44
.
K
Trouble Diagnoses Introduction .............................. 8 . INSTALLATION .................................................. 45 .
DIAGNOSIS FUNCTION ...................................... 8 . FRONT PASSENGER AIR BAG MODULE ............. 46 .
HOW TO PERFORM TROUBLE DIAGNOSES Removal and Installation ....................................... 46 .
FOR QUICK AND ACCURATE REPAIR .............. 8 . REMOVAL .......................................................... 46
. L
WORK FLOW ....................................................... 9 . INSTALLATION -- ORIGINAL PASSENGER
SRS Components Parts Location .......................... 10 . AIR BAG MODULE ............................................ 47 .
Schematic ..............................................................11
. INSTALLATION -- SERVICE REPLACE- M
Wiring Diagram -- SRS -- .................................... 12 . MENT PASSENGER AIR BAG MODULE .......... 47 .
CONSULT-II Function (AIR BAG) .......................... 18 . SIDE CURTAIN AIR BAG MODULE ....................... 49 .
HOW TO CHANGE SELF-DIAGNOSIS MODE Removal and Installation ....................................... 49 .
WITH CONSULT-II ............................................. 18 . REMOVAL .......................................................... 49
.
HOW TO ERASE SELF-DIAGNOSIS RESULTS 19 ... INSTALLATION .................................................. 50 .
SELF-DIAGNOSIS FUNCTION (WITHOUT CON- CRASH ZONE SENSOR .......................................... 51 .
SULT-II) ................................................................. 19
. Removal and Installation ....................................... 51 .
HOW TO CHANGE SELF-DIAGNOSIS MODE... 20 REMOVAL .......................................................... 51
.
HOW TO ERASE SELF-DIAGNOSIS RESULTS 20 ... INSTALLATION .................................................. 51 .
SRS Operation Check ........................................... 20 . SIDE AIR BAG (SATELLITE) SENSOR .................. 52 .
DIAGNOSTIC PROCEDURE 1 .......................... 20 . Removal and Installation ....................................... 52 .
Trouble Diagnoses with CONSULT-II .................... 22 . REMOVAL .......................................................... 52
.
DIAGNOSTIC PROCEDURE 2 .......................... 22 . INSTALLATION .................................................. 52 .
DIAGNOSTIC PROCEDURE 3 .......................... 27 . FRONT SEAT BELT PRE-TENSIONER .................. 53 .
DIAGNOSTIC PROCEDURE 4 (CONTINUED Removal and Installation ....................................... 53 .
FROM DIAGNOSTIC PROCEDURE 2) ............. 29 .

Revision: July 2005 SRS-1 2006 Altima
DIAGNOSIS SENSOR UNIT .................................... 54 . SRS INSPECTION (FOR FRONTAL COLLI-
Removal and Installation ....................................... 54 . SION) ..................................................................56
.
REMOVAL .......................................................... 54
. For Side and Rollover Collision ..............................57 .
INSTALLATION ................................................... 54. WHEN SRS IS ACTIVATED IN THE SIDE OR
ECU DISCRIMINATED NO. ................................ 54 . ROLLOVER COLLISION ....................................57 .
OCCUPANT CLASSIFICATION SYSTEM CON- WHEN SRS IS NOT ACTIVATED IN THE SIDE
TROL UNIT ............................................................... 55
. OR ROLLOVER COLLISION ..............................57 .
Removal and Installation ....................................... 55 . SRS INSPECTION (FOR SIDE AND ROLLOVER
COLLISION DIAGNOSIS ......................................... 56 . COLLISION) ........................................................58.
For Frontal Collision ............................................... 56
.

Revision: July 2005 SRS-2 2006 Altima
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EHS00102

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
EHS00103

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 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.
q 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
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.
M
Occupant Classification System Precaution EHS0013F

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

Revision: July 2005 SRS-3 2006 Altima
PREPARATION

PREPARATION PFP:00002

Special Service Tool EHS00105

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.) Description
Tool name
-- Removing and installing air bag lock
(J-44615)
Air bag lock master key set

LRS191

Revision: July 2005 SRS-4 2006 Altima
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) PFP:28556
A
SRS Configuration EHS00106

SRS

WHIA0224E

J
The air bag deploys if the air bag diagnosis sensor unit activates 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-
K
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;
L
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module

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