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Nissan Pathfinder (2006 year). Manual - part 388

PRECAUTIONS

SRS-3

SRS

2006 Pathfinder

PRECAUTIONS

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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”

EHS001LI

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

EHS001LJ

●

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.

●

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 the air bag diagnosis sensor unit for cracks, deformi-
ties or rust before installation and replace as required.

●

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.

●

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.

Occupant Classification System Precaution

EHS001LK

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

SRS-4

PREPARATION

2006 Pathfinder

PREPARATION

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Special Service Tools

EHS001LM

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number
(Kent-Moore No.)
Tool name

Description

—

(J-42057-UPD)
Air bag key set
Part of kit (J-42057)

Removing and installing air bag lock

LRS210

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS-5

SRS

2006 Pathfinder

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

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SRS Configuration

EHS001LO

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:

WHIA0194E

SRS configuration

Frontal collision

Left side collision

Right side colli-

sion

Rollover

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 (if equipped)

—

Front RH side air bag module (if equipped)

—

LH side front curtain air bag module (if equipped)

—

LH side rear curtain air bag module (if equipped)

—

RH side front curtain air bag module (if equipped)

—

RH side rear curtain air bag module (if equipped)

—

SRS-6

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

2006 Pathfinder

Front Seat Belt Pre-tensioner with Load Limiter

EHS001LP

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

EHS001LQ

Front side air bag modules are built into the front seatback assemblies.
Vehicles with side air bags are equipped with labels as shown.

Side Curtain Air Bag

EHS001LR

Side curtain air bag modules are located above the vehicle headlining.
Vehicles with side curtain air bags are equipped with labels as
shown.

Occupant Classification System (OCS)

EHS001S8

The occupant classification system (OCS) identifies different size occupants, out of position occupants, and
detects if child seat is present in the front passenger seat. The OCS receives inputs from the occupant classi-
fication sensor (located inside the passenger seat cushion assembly) and belt tension sensor (part of the pas-
senger front seat belt assembly and located at the belt anchor location). Depending on classification of the
passenger, the OCS sends a signal to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit
uses this signal and the seat belt buckle switch RH signal to determine deployment or non deployment of the
passenger front air bag in the event of a collision. Depending on the signals received, the air bag diagnosis
sensor unit can disable the passenger front air bag completely.

NOTE:
In case of customer concern, CONSULT-II can be used to confirm the passenger air bag status (readiness).

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS-7

SRS

2006 Pathfinder

Passenger Air Bag Status Conditions

NOTE:
Passenger does not meet Occupant Classification System specifications for passenger air bag activation.

Direct-connect SRS Component Connectors

EHS001LT

The following SRS components use direct-connect style harness connectors.

●

Driver air bag module

●

Front passenger air bag module

●

LH side front curtain air bag module

●

LH side rear curtain air bag module

●

RH side front curtain air bag module

●

RH side rear curtain air bag module

●

Front LH seat belt pre-tensioner

●

Front RH seat belt pre-tensioner

Always pull up to release black locking tab prior to removing connector from SRS component.
Always push down to lock black locking tab after installing connector
to SRS component. When locked, the black locking tab is level with
the connector housing.

Front Passenger Seat

(Condition)

PASS AIR BAG OFF Indicator

(Status)

Passenger Air Bag Status

(Readiness)

CONSULT-II Display

Seat occupied

OFF

Active (enabled)

Seat occupied

NOTE

Deactivated (disabled)

OFF

Seat empty

OFF

Deactivated (disabled)

OFF

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SRS-8

TROUBLE DIAGNOSIS

2006 Pathfinder

TROUBLE DIAGNOSIS

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Trouble Diagnosis Introduction

EHS001LU

CAUTION:

●

Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness con-
nectors.

●

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

●

Keep ground connections clean.

DIAGNOSIS FUNCTION

The SRS self-diagnosis 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 DIAGNOSES 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

Check that the following parts are in good order.

●

Battery (Refer to

SC-4, "How to Handle Battery"

●

Fuse (Refer to

SRS-12, "Wiring Diagram — SRS —"

●

System component-to-harness connections

User mode

Diagnosis mode

Display type

“AIR BAG” warning lamp

ON-OFF operation

CONSULT-II

—

Monitoring

TROUBLE DIAGNOSIS

SRS-9

SRS

2006 Pathfinder

WORK FLOW

*1:

*2:

*3:

*4:

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SRS-10

TROUBLE DIAGNOSIS

2006 Pathfinder

SRS Components Parts Location

EHS001LV

Side curtain air bag modules
(If equipped)

Front RH side air bag module
(If equipped)

Front RH seat belt pre-tensioner

Belt tension sensor

Seat belt buckle switch RH

RH side air bag (satellite) sensor
(If equipped)

Occupant classification system sen-
sor

Occupant classification sys-
tem control unit

Front passenger air bag off indicator

10. Front passenger air bag module

11.

Crash zone sensor

12. Air bag warning lamp

13. Spiral cable

14. Driver air bag module

15. LH side air bag (satellite) sensor

(If equipped)

16. Front LH seat belt pre-tensioner

17. Air bag diagnosis sensor unit

18. Front LH side air bag module

(If equipped)

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Content .. 386 387 388 389 ..