Nissan Juke F15. Manual - part 1160

COMPONENT PARTS

SRC-5

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000012199571

1.

Combination meter
Refer to 

MWI-6, "METER SYSTEM : 

Component Parts Location"

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2. Combination switch (spiral cable)

3. Driver air bag module

4. Passenger air bag module

5. Seat belt pre-tensioner LH

6. Satellite sensor LH

7. Front door satellite sensor LH

8. Curtain air bag module LH

9. Side air bag module LH

JMHIA1720ZZ

SRC-6

< SYSTEM DESCRIPTION >

COMPONENT PARTS

Component Description

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10. Air bag diagnosis sensor unit

11.

Occupant detection system seat 
sensor

12.

Occupant detection system control 
unit

13. Crash zone sensor

A. Behind center pillar lower garnish

B. View with door finisher removed

C.

View with headlining assembly re-
moved

D. View with seatback pad removed

E.

View with center console assembly 
removed

F.

Backside of passenger seat cushion 
frame

G.

View with bumper fascia assembly 
removed

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.

• It contains the “G” sensors for both frontal and side collisions and spare battery 

function in case of main battery damage in collision.

BCM

Receive the collision detection signal when air bag diagnosis sensor unit detects col-
lision.

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.

Crash zone sensor

• Transmits signal to air bag diagnosis sensor unit when a frontal collision occurs.
• Crash zone sensor is a G sensor that outputs voltage signal during deceleration at 

the time of a vehicle frontal collision that is more than the specified limit is detected. 

Curtain air bag module LH/RH

• Deploys according to collision judgment of G sensor, pressure sensor, and safing 

sensor.

• Receives collision signal from air bag diagnosis sensor unit, ignites, and burns ig-

nition material by electric ignition system, when side collision exceeds setting limit 
of the vehicle. Gas is generated by chemical reaction of ignition material, passes 
filter, and deploys air bag.

• Air bag module mainly consists of air bag and inflator that deploys air bag.

Driver air bag module

• Receives signal from air bag diagnosis sensor unit and deploys air bag.
• In case of frontal collision where acceleration is more than the specified level, the 

ignition materials are ignited by electric ignition system. The system burns the gas 
generating materials resulting in a chemical reaction. This generates hot gases that 
flow into the air bag through a filter and expand the bag.

Front door satellite sensor LH/RH

• Transmits signal to air bag diagnosis sensor unit when a side collision occurs.
• When air bag diagnosis sensor unit defines both signal voltage of the “G” sensor, 

pressure sensor and the safing algorithm to be that of collision which is more than 
the specified level, the driving circuit switches on and feeds the electric ignitor of 
both the side air bag, curtain air bag and pre-tensioner.

Occupant detection system control unit

Detects front passenger seat occupant.

Passenger air bag module

• Receives signal from air bag diagnosis sensor unit and deploys air bag.
• In case of frontal collision where acceleration is more than the specified level, the 

ignition materials are ignited by electric ignition system. The system burns the gas 
generating materials resulting in a chemical reaction. This generates hot gases that 
flow into the air bag through a filter and expand the bag.

Passenger air bag OFF indicator

Indicates whether or not passenger air bag is in the activation mode based on the 
judgement of occupant classification system.

Satellite sensor LH/RH

• Transmits signal to air bag diagnosis sensor unit when a side collision occurs.
• When air bag diagnosis sensor unit defines both signal voltage of the “G” sensor, 

pressure sensor and the safing algorithm to be that of collision which is more than 
the specified level, the driving circuit switches on and feeds the electric ignitor of 
both the side air bag and curtain air bag and seat belt pre-tensioner.

Seat belt buckle switch LH/RH

Controls deployment timing depending on the seat belt condition that is fastened or 
unfastened.

COMPONENT PARTS

SRC-7

< SYSTEM DESCRIPTION >

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Seat belt pre-tensioner LH/RH

• Receives signal from air bag diagnosis sensor unit and deploys seat belt pre-ten-

sioner and lap pre-tensioner.

• In the case of a frontal collision or side collision that exceeds specified impact level, 

the air bag diagnosis sensor unit detects the deceleration caused by collision. It re-
strains the passenger with seat belt easing the stress on passengers chest with 
load limiter.

Side air bag module LH/RH

• Receives signal from air bag diagnosis sensor unit and deploys air bag.
• In case of side collision where acceleration is more than the specified level, the ig-

nition materials are ignited by electric ignition system. The system burns the gas 
generating materials resulting in a chemical reaction. This generates hot gases that 
flow into the air bag through a filter and expand the bag.

Component

Function

SRC-8

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

System Diagram

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System Description

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Supplemental Restraint System (SRS) activates air bag module and seat belt pre-tensioner when it detects a

frontal collision or a side collision that is more than the specified limit.

Together with other safety devices, it reduces the impact that occupant receives when vehicle collision occurs.

Air bag diagnosis sensor unit supplies power supply to air bag module and pre-tensioner seat belt when decel-

eration that is more than the specified limit is detected by G sensor in air bag diagnosis sensor unit, crash

zone sensor, satellite sensor, or front door satellite sensor.

Air bag module is composed of electric igniter (squib), filter, pyrotechnic material, 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 generates high temperature nitrogen gas.

The gas through filter activates air bag. At the same time, pre-tensioner seat belt receives power supply from

air bag diagnosis sensor unit, gas generator is activated, and then gas is generated.

Balls in pipe are moved according to generated gas pressure and strike pinion gear on ELR shaft.

ELR shaft rotates and retracts seat belt.

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

lamp.

JMHIA1721GB