Nissan Murano. Manual - part 1310

SRC-88

< SYSTEM DESCRIPTION >

[FOR MEXICO]

SRS AIR BAG SYSTEM

zone sensor, or satellite sensor. Air bag module is composed of electric igniter (squib), filter, pyrotechnic mate-
rial, and gas generating material. When air bag module receives a signal from air bag diagnosis sensor unit,
air bag module ignites pyrotechnic material using electric igniter (squib) so that gas generating material gener-
ates high temperature nitrogen gas. The gas through filter activates air bag and seat belt pre-tensioner.

AIR BAG DIAGNOSIS SENSOR UNIT FUNCTIONS

Air bag diagnosis sensor unit has the following functions.
• Detects a collision and supplies the energy for deploying air bag and seat belt pre-tensioner.
• Detects and records electrical malfunction in air bag system and seat belt pre-tensioner system, and blinking

air bag warning lamp.

• Detects and records the deployment of air bag and seat belt pre-tensioner, and turns ON air bag warning

lamp.

• Indicates malfunctioning portion with blinking times of air bag warning lamp in diagnosis mode.
• Indicates the malfunction record via CONSULT.

COLLISION MODE

• The operation of supplemental restraint system is different depending on the collision modes applications.

For example, the driver air bag module, front passenger air bag module and front seat belt pre-tensioner are
activated in a frontal collision but not in a side collision.

• SRS configurations that are activated for some collision modes are as per the following.

×

: Apply

—: Not apply

SRS configuration

Frontal collision

Rear collision

Left side colli-

sion

Right side colli-

sion

Roll over

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

—

—

—

×

×

Collision detection output func-
tion

×

×

×

×

×

SRS AIR BAG SYSTEM

SRC-89

< SYSTEM DESCRIPTION >

[FOR MEXICO]

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Component Parts Location

INFOID:0000000009718546

Component Description

INFOID:0000000009718547

1.

Front passenger air bag module 

2.

Driver air bag module

3.

Combination switch (Spiral cable)

4.

Front passenger air bag OFF indica-
tor

5.

Air bag diagnosis sensor unit 

6.

Satellite sensor (LH/RH)

7.

Front seat belt pre-tensioner (LH/
RH)

8.

Seat belt buckle switch (Driver side/
Passenger side)

9.

Front side air bag module (LH/RH)

10. Side curtain air bag module

11.

Crash zone sensor

JMHIA2475ZZ

Component

Function

Air bag diagnosis sensor unit

Detects a collision and supplies power supply for deployment to air bag module and 
pre-tensioner seat belt.

Air bag module
• Driver
• Passenger
• Side
• Curtain

Receives signal from air bag diagnosis sensor unit and deploys air bag.

Seat belt pre-tensioner

Receives signal from air bag diagnosis sensor unit and deploys seat belt pre-tension-
er.

Seat belt buckle switch

Controls deployment timing based on seat belt fastened or unfastened condition.

Crash zone sensor

Transmits signal to air bag diagnosis sensor unit when a frontal collision occurs.

Satellite sensor (LH/RH)

Transmits signal to air bag diagnosis sensor unit when a side collision occurs.

SRC-90

< SYSTEM DESCRIPTION >

[FOR MEXICO]

SRS AIR BAG SYSTEM

Combination meter (air bag warning lamp)

Indicates air bag malfunctioning and deployment by blinking and illuminating air bag 
warning lamp.

Combination switch (spiral cable)

Supplies power supply to driver air bag module on steering wheel.

Component

Function

DIAGNOSIS SYSTEM (AIRBAG)

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< SYSTEM DESCRIPTION >

[FOR MEXICO]

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DIAGNOSIS SYSTEM (AIRBAG)

Description

INFOID:0000000009718548

CAUTION:

• Never 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 harness
connectors.

• Never 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 with air bag warning lamp and/or CONSULT.
• The user mode is exclusively prepared for the customer (driver). This mode warns the driver of a system

malfunction 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 are as per the following items.

×

: Application, —: Not application

On Board Diagnosis Function

INFOID:0000000009718549

ON-BOARD DIAGNOSIS

There are two self diagnosis functions with air bag warning lamp as per the following items.
• USER MODE
• DIAGNOSIS MODE

METHOD OF STARTING

• User mode is a mode for ordinary use. When a malfunction of SRS air bag is detected, SRS air bag warning

lamp blinks to warn the user.

• Diagnosis mode enables malfunctioning system to be checked according to the number of blinks.
• User mode or Diagnosis mode changes from diagnosis mode when changing operation is performed.
• In user mode, when SRS air bag warning lamp is not blinking, changing to diagnosis mode by ignition switch

operation is not possible.

• In diagnosis mode, SRS air bag warning lamp may turn ON after ignition switch operation more than 7 sec-

onds, but it is possible to change the status from diagnosis mode to user mode by ignition switch operation
after 7 seconds.

• When multiple systems malfunction is detected, all of the malfunctions are displayed in Diagnosis mode.

Procedure to Change Diagnosis Mode

1.

Turn ignition switch from OFF to ON.

2.

SRS air bag lamp turns ON for 7 seconds, then turn ignition switch OFF within 2 seconds after the lamp
turns OFF.

3.

After turning ignition switch OFF, wait for 3 seconds or more.

4.

Repeat operation 1 to 3 for 2 times so that operation 1 to 3 is repeated for 3 times in total.

5.

Turn ignition switch from OFF to ON. Diagnosis mode changes.

CAUTION:

• In Diagnosis mode, if the system is normal and “PAST“ of “Self Diagnostic Result“ is indicated,

always perform “ERASE“ of “Self Diagnostic Result“ using CONSULT.

• When “ERASE“ of “Self Diagnostic Result“ is performed using CONSULT, the mode changes auto-

matically from Diagnosis mode to User mode.

USER MODE

In USER MODE, air bag warning lamp on combination meter blinks when a malfunction is detected and warns
the customer (driver).

How to Read Air Bag Warning Lamp

1.

Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.

Diagnosis tool

User mode

Diagnosis mode

Air bag warning lamp

×

×

CONSULT

–

×