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 and SB section of this Service Man-
ual.

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 per-
formed by an authorized NISSAN/INFINITI dealer.

●

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.

●

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.

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

AHS000V3

●

Do not use electrical test equipment to check SRS circuits 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 removed, it is still possible for the air bag and seat belt
pre-tensioner to deploy. Therefore, do not work on any SRS 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 instal-
lation and replace as required.

●

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.

●

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.

SRS-4

PREPARATION

Revision: 2005 August

2005 Murano

PREPARATION

PFP:00002

Commercial Service Tools

AHS000E4

Tool name

Description

Tamper resistant TORX bit

Size: T30

S-NT757

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS-5

SRS

Revision: 2005 August

2005 Murano

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

PFP:28556

SRS Configuration

AHS000AM

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;

PHIA0698E

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

—

SRS-6

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

Revision: 2005 August

2005 Murano

Front Seat Belt Pre-tensioner with Load Limiter

AHS000AN

The seat belt pre-tensioner system with 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 Bag

AHS000AO

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 Bag

AHS000AP

The side curtain air bags have the labels as shown.

SRS444

PHIA0249E

BF-2006D

TROUBLE DIAGNOSIS

SRS-7

SRS

Revision: 2005 August

2005 Murano

TROUBLE DIAGNOSIS

PFP:00004

Trouble Diagnosis Introduction

AHS000E5

CAUTION:

●

Do not use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

●

Do not repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a
new one.

●

Keep ground portion clean.

DIAGNOSIS FUNCTION

The SRS self-diagnostic results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:

HOW TO PERFORM TROUBLE DIAGNOSIS FOR QUICK AND ACCURATE REPAIR

A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.

Information from Customer

WHAT..... Vehicle model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms

Preliminary Check

Make sure the following parts are in good order.

●

Battery (Refer to

SC-4, "How to Handle Battery"

●

Fuse (Refer to

SRS-11, "Wiring Diagram — SRS —"

●

System component-to-harness connections