Nissan Leaf. Manual - part 1091

COMPONENT PARTS

SR-9

< SYSTEM DESCRIPTION >

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INFLATOR : Driver air bag inflator

INFOID:0000000010120244

• Driver air bag inflator (1) mainly consists of electric ignition device

(squib), igniting agent, gas generating agent, and filter. These

items are stored in a container.

• In a frontal collision which exceeds the specified limit of the vehi-

cle, electric ignition device (squib) ignites igniting agent. Gas gen-

erating agent burns due to heat from igniting agent. Generated gas

(high temperature) inflates air bag through filter.

NOTE:

Filter removes and cools residues of gas generating agent.

CROSS-SECTION OF DRIVER AIR BAG INFLATOR

INFLATOR : Passenger air bag inflator

INFOID:0000000010120245

• Passenger air bag inflator (1) mainly consists of electric ignition

device (squib), igniting agent, gas generating agent, and filter.

These items are stored in a container.

• In a frontal collision which exceeds the specified limit of the vehi-

cle, electric ignition device (squib) ignites igniting agent. Gas gen-

erating agent burns due to heat from igniting agent. Generated gas

(high temperature) inflates air bag through filter.

NOTE:

Filter removes and cools residues of gas generating agent.

CROSS-SECTION OF PASSENGER AIR BAG INFLATOR

JMHIA2205ZZ

1

:  Filter

2

: Gas generating agent

3

: Igniting agent

4

: Electric ignition device (squib)

5

:  Cushion

6

:  Flame

7

: Generated gas

JMHIA0161ZZ

JMHIA2206ZZ

1

:  Filter

2

: Gas generating agent

3

: Igniting agent

4

: Electric ignition device (squib)

5

:  Cushion

6

:  Flame

7

: Generated gas

NNHIA0035ZZ

SR-10

< SYSTEM DESCRIPTION >

COMPONENT PARTS

INFLATOR : Side air bag inflator

INFOID:0000000010120246

Side air bag inflator (1) mainly consists of electric ignition device

(squib), heating agent, compressed gas, filter, and diffuser. These

items are stored in a cylinder-type container.

CROSS-SECTION OF SIDE AIR BAG INFLATOR

In a frontal collision which exceeds the specified limit of the vehicle, electric ignition device (squib) ignites and

burns heating agent. Compressed gas breaks burst disc A, inflates gas in compressed gas chamber, breaks

burst disc B, and then inflates air bag through filter and diffuser.

INFLATOR : Curtain air bag inflator

INFOID:0000000010120247

Curtain air bag inflator mainly consists of electric ignition device

(squib), heating agent, compressed gas, and diffuser. These items

are stored in a cylinder-type container.

CROSS-SECTION OF CURTAIN AIR BAG INFLATOR

JMHIA1600ZZ

PHIA0571J

1.

Burst disc B

2.

Compressed gas

3.

Heating agent (propellant)

4.

Electric ignition device (squib)

5.

Burst disc A

6.

Filter

7.

Diffuser

1

: Curtain air bag inflator

2

: Curtain air bag

: Vehicle front

JMHIA2003ZZ

PHIA0572J

COMPONENT PARTS

SR-11

< SYSTEM DESCRIPTION >

C

D

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G

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In a frontal collision which exceeds the specified limit of the vehicle, electric ignition device (squib) ignites and

burns heating agent. Burned gas breaks burst disc A, inflates gas in compressed gas chamber, breaks burst

disc B, and then inflates air bag through filter and diffuser.

MAIN COMPONENT PARTS AND FUNCTIONS
MAIN COMPONENT PARTS AND FUNCTIONS : Spiral cable

INFOID:0000000010120248

• Spiral cable electrically connects air bag diagnosis sensor unit and

driver air bag module. Spiral cable mainly consists of the rotating

portion (A) which performs the same movement as steering wheel,

the fixed case (B) which is installed on steering wheel, and the

cable which connects the rotating portion.

• Spiral cable is built into steering angle sensor which is installed to

a space between combination switch and steering wheel.

MAIN COMPONENT PARTS AND FUNCTIONS : Crash zone sensor

INFOID:0000000010120249

• Crush zone sensor (1) is installed to charge port lid hinge assem-

bly. Crash zone sensor integrates frontal collision “G” sensor which

detects frontal collision impact that exceeds the specified limit of

the vehicle.

• In a frontal collision that exceeds the specified limit of the vehicle,

crush zone sensor detects impact. If frontal collision safing sensor

in air bag diagnosis sensor unit judges that impact is due to a colli-

sion, driver air bag, passenger air bag and front pre-tensioner seat

belt operate.

MAIN COMPONENT PARTS AND FUNCTIONS : Satellite sensor

INFOID:0000000010120250

FRONT SATELLITE SENSOR

• Front door satellite sensor (1) is installed to front door panel front

side.

• Front door satellite sensor integrates lateral collision “G” sensor

which detects lateral collision impact that exceeds the specified

limit of the vehicle. (Lateral collision “G” sensor adopts electronic

sensor of which operating principles are the same as those of fron-

tal collision “G” sensor in air bag diagnosis sensor unit.)

• In a lateral collision that exceeds the specified limit of the vehicle,

front door satellite sensor detects impact. If lateral collision safing

sensor in air bag diagnosis sensor unit judges that impact is due to

a collision, side air bag and curtain air bag operate.

REAR SATELLITE SENSOR

1.

Burst disk

2.

Compressed gas

3.

Heating agent (propellant)

4.

Electric ignition device (squib)

5.

Burst disk A

6.

Diffuser

NNHIA0038ZZ

: Vehicle front

JMHIA2004ZZ

: Vehicle front

JMHIA2204ZZ

SR-12

< SYSTEM DESCRIPTION >

COMPONENT PARTS

• Rear satellite sensor (1) in installed to center pillar lower portion of

front seat belt retractor rear side.

• Rear satellite sensor integrates lateral collision “G” sensor which

detects lateral collision impact that exceeds the specified limit of

the vehicle. (Lateral collision “G” sensor adopts electronic sensor

of which operating principles are the same as those of frontal colli-

sion “G” sensor in air bag diagnosis sensor unit.)

• In a lateral collision that exceeds the specified limit of the vehicle,

rear satellite sensor detects impact. If lateral collision safing sensor

in air bag diagnosis sensor unit judges that impact is due to a colli-

sion, side air bag and curtain air bag operate.

MAIN COMPONENT PARTS AND FUNCTIONS : Air bag diagnosis sensor unit

INFOID:0000000010120251

• Air bag diagnosis sensor unit (1) is installed to front seat center

portion (under center console). Air bag diagnosis sensor unit inte-

grates control functions of driver air bag, passenger air bag, side

air bag, curtain air bag, and pre-tensioner seat belt.

• Air bag diagnosis sensor unit integrates frontal collision “G” sensor,

frontal collision safing sensor, and lateral collision safing sensor

(only for models with curtain air bag).

• Air bag diagnosis sensor unit has a function that judges impact due

to frontal and lateral collisions exceeding the specified limit of the

vehicle. Air bag diagnosis sensor unit also has an auxiliary power

supply function that supplements 12 V battery power supply in the event battery is damaged in a collision.

• Air bag diagnosis sensor unit diagnoses electric system of entire system. Self-diagnosis function is adopted,

which indicates system malfunction by blinking or turning ON air bag warning lamp on combination meter

when a malfunction is detected. Diagnosis using CONSULT is possible.

MAIN COMPONENT PARTS AND FUNCTIONS : Air bag warning lamp

INFOID:0000000010120252

• Air bag warning lamp blinks or turns ON indicating a system mal-

function when a malfunction is detected for electric system of SRS

air bag system and pre-tensioner seat belt system.

• For operation check purposes, air bag warning lamp turns ON for 7

seconds after power switch is turned ON. During this period of

time, air bag diagnosis sensor unit performs system diagnosis.

• Air bag warning lamp indicates self-diagnosis result according to

the number of times it blinks. (in diagnosis mode)

NOTE:

SRS air bag and pre-tensioner seat belt do not operate for approx-

imately 7 seconds (air bag warning lamp is blinking or turning ON)

after power switch is turned ON.

: Vehicle front

JMHIA2005ZZ

: Vehicle front

JMHIA2006ZZ

BF-1845D