Infiniti QX56 (Z62). Manual — part 1201
SRC-8
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
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1.
Driver air bag module
2.
Combination meter
3.
Front passenger air bag off indicator
4.
Passenger air bag module
5.
Seat belt pre-tensioner
6.
Front satellite sensor
7.
Side air bag module
8.
Rear satellite sensor
9.
Rear curtain air bag module
10. Front curtain air bag module
11.
Lap pre-tensioner
12. Air bag diagnosis sensor unit
JMHIA1650ZZ
COMPONENT PARTS
SRC-9
< SYSTEM DESCRIPTION >
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Component Description
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13. Occupant detection system control
unit
14. Occupant detection system seat
sensor
15. Crash zone sensor
16. Combination switch (spiral cable)
A.
Behind center pillar lower garnish
B.
View with seatback pad removed
C.
View with laggage side finisher lower
removed
D.
View with headlining assembly re-
moved
E.
View with headlining assembly re-
moved
F.
View with center console assembly
removed
G.
Backside of passenger seat cushion
frame
H.
View with bumper fascia assembly
removed
I.
View with steering wheel 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.
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 (front/rear)
• Deploys according to collision judgment of G 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.
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 (front/rear)
• 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,
and the safing algorithm to be that of collision which is more than the specified lev-
el, 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.
Seat belt pre-tensioner LH/RH
• Receives signal from air bag diagnosis sensor unit and deploys seat belt pre-ten-
sioner.
• In the case of a frontal collision or side collision or roll over that exceeds specified
impact level, the air bag diagnosis sensor unit detects the deceleration caused by
collision. It restrains the passenger with seat belt easing the stress on passengers
chest with load limiter.
SRC-10
< SYSTEM DESCRIPTION >
COMPONENT PARTS
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.
Lap pre-tensioner LH/RH
• Receives signal from air bag diagnosis sensor unit and deploys lap pre-tensioner.
• In the case of a frontal collision or side collision or roll over that exceeds specified
impact level, the air bag diagnosis sensor unit detects the deceleration caused by
collision. It restrains the passenger with seat belt easing the stress on passengers
chest with load limiter.
• Lap pre-tensioner upgrades passenger restrain function by reducing movement of
lumber during a frontal collision or side collision or roll over.
Component
Function
SYSTEM
SRC-11
< SYSTEM DESCRIPTION >
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SYSTEM
System Diagram
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JMHIA1560GB
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