Juke F15 (2012 year). Service Repair Manual — part 333

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. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.

The vehicle may be equipped with a passenger air bag deactivation switch. Because no rear seat exists where
a rear-facing child restraint can be placed, the switch is designed to turn off the passenger air bag so that a
rear-facing child restraint can be used in the front passenger seat. The switch is located in the center of the
instrument panel, near the ashtray. When the switch is turned to the ON position, the passenger air bag is
enabled and could inflate for certain types of collision. When the switch is turned to the OFF position, the pas-
senger air bag is disabled and will not inflate. A passenger air bag OFF indicator on the instrument panel lights
up when the passenger air bag is switched OFF. The driver air bag always remains enabled and is not affected
by the passenger air bag deactivation switch.

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 performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• 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 har-
ness connectors.

• The vehicle may be equipped with a passenger air bag deactivation switch which can be operated by

the customer. When the passenger air bag is switched OFF, the passenger air bag is disabled and
will not inflate. When the passenger air bag is switched ON, the passenger air bag is enabled and
could inflate for certain types of collision. After SRS maintenance or repair, make sure the passenger
air bag deactivation switch is in the same position (ON or OFF) as when the vehicle arrived for ser-
vice.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Service

INFOID:0000000006439846

• Never use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect battery negative terminal and wait 3 minutes

or more.
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, never work on any SRS connectors or wires until at least 3 minutes have
passed.

• Diagnosis sensor unit must always be installed with their arrow marks “

⇐

” pointing towards the front of the

vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before installa-
tion and replace as required.

• The spiral cable must be aligned with the neutral position since its rotations are limited. Never turn steering

wheel and column after removal of steering gear.

SRC-6

< PRECAUTION >

PRECAUTIONS

• 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.
• Always replace instrument panel pad following front passenger air bag deployment.
• Never solder the harness when making repairs. Check that harness is not pinched and that there is no con-

tact with other components.

• Never allow harness to come in contact with oil, grease, waste oil, or water.
• Never insert foreign materials, such as a screwdriver, into the harness connector. (This is to prevent acci-

dental activation caused by static electricity.)

• Always use CONSULT-III or SRS air bag warning lamp to perform the circuit diagnosis. (Never use an elec-

tric tester such as a circuit tester.)

• Never enter in the deployment area of the pop-up roll bar. Never put an object in the deployment area of the

pop-up roll bar. (This is to prevent injury in case of an unintentional deployment.)

• When handling a pop-up roll bar, always grip the frame and handle carefully.
• Never reuse a pop-up roll bar that has previously deployed.
• Modification of the pop-up roll bar may cause unintentional deployment or a malfunction. Never disassemble

or modify the pop-up roll bar.

• Never allow the pop-up roll bar to be impacted (by dropping or otherwise). Always replace the pop-up roll bar

if impacted.

• When repairing the surrounding area of the pop-up roll bar, be careful not to apply excessive heat when

welding or otherwise. Remove the pop-up roll bar in advance, if necessary. Be careful when modifying the
mounting area or installing other parts because an incorrect procedure may cause damage or a malfunction.

• Never disassemble the pop-up roll bar.
• Never expose the pop-up roll bar to temperatures exceeding 90

C (194

F).

• Never allow oil, grease, detergent, or water to come in contact with the pop-up roll bar.

COMPONENT PARTS

SRC-7

< SYSTEM DESCRIPTION >

SRC

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000006439847

Combination meter
Refer to

MWI-4, "METER SYSTEM :

Component Parts Location"

Combination switch (spiral cable)

Driver air bag module
Crash zone sensor

Passenger air bag module

Seat belt pre-tensioner LH

Satellite sensor LH

Lap pre-tensioner LH

Curtain air bag module LH

Side air bag module LH

JMHIA1682ZZ

SRC-8

< SYSTEM DESCRIPTION >

COMPONENT PARTS

Component Description

INFOID:0000000006439848

10. Air bag diagnosis sensor unit

11.

Air bag cutoff switch

12. Crash zone sensor

Behind rear side finisher

View with headlining assembly re-
moved

View with seatback pad removed

View with center console assembly
removed

View with glove box assembly open

Radiator core support assembly

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 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.

Lap 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.

• Lap pre-tensioner upgrades passenger restrain function by reducing movement of

lumber during a frontal collision.

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

Air bag cut OFF switch

Deactivates passenger air bag module deployment by switching air bag cut OFF
switch to the OFF position.

Passenger air bag OFF indicator

Passenger air bag OFF indicator turns ON when turming air bag cut OFF switch OFF
position.

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

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.

COMPONENT PARTS

SRC-9

< SYSTEM DESCRIPTION >

SRC

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 that exceeds specified impact level, the air bag di-

agnosis sensor unit detects the deceleration caused by collision. It restrains 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-10

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

System Diagram

INFOID:0000000006439849

System Description

INFOID:0000000006439850

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.
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.

JMHIA1652GB

SYSTEM

SRC-11

< SYSTEM DESCRIPTION >

SRC

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 via the number of blinks from the air bag warning lamp in the diagnosis

mode.

• Indicates the malfunction record via CONSULT-III.

COLLISION MODES

The operation of SRS is different depending on the collision modes applications. For example, the driver air
bag module, passenger air bag module, and seat belt pre-tensioner are activated in a frontal collision or side
collision.
SRS configurations that are activated for the following collision modes.

: Apply —: Not apply

SRS configuration

Frontal collision

Left side collision

Right side collision

Driver air bag module

—

Passenger air bag module

—

Seat belt pre-tensioner LH

—

Seat belt pre-tensioner RH

—

Lap pre-tensioner LH

—

Lap pre-tensioner RH

—

Side air bag module LH

—

Side air bag module RH

—

Curtain air bag module LH

—

Curtain air bag module RH

—

SRC-12

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (AIR BAG)

DIAGNOSIS SYSTEM (AIR BAG)

Description

INFOID:0000000006439851

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-III.
• 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-III are as per the following items.

: Application, —: Not application

On Board Diagnosis Function

INFOID:0000000006439852

ON-BOARD DIAGNOSIS

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

METHOD OF STARTING

• Diagnosis mode changes from user mode to 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, when repair is complete and system is normal, the mode changes to user mode when

ignition switch is turned from OFF to ON.

Procedure to Change Diagnosis Mode

Turn ignition switch from OFF to ON.

SRS air bag lamp turns ON for 7 second and turns OFF, then turn ignition switch OFF within 1second after
the lamp turns OFF.

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

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

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

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

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

Compare the air bag warning lamp blinking pattern with the examples.

Air Bag Warning Lamp Examples

Diagnosis tool

User mode

Diagnosis mode

Air bag warning lamp

CONSULT-III

–

DIAGNOSIS SYSTEM (AIR BAG)

SRC-13

< SYSTEM DESCRIPTION >

SRC

DIAGNOSIS MODE

The diagnosis mode can only be switched when a malfunction is detected in the user mode. Malfunctioning
system is indicated according to blinking pattern of air bag warning lamp.

How to Read Air Bag Warning Lamp

Follow the procedures of “PROCEDURE TO CHANGE DIAGNOSIS MODE”, and switch to the diagnosis
mode.

Turn ignition switch ON. Check the blinking pattern of air bag warning lamp.
There are 2 blinking patterns for the air bag warning lamp as per the following items.
• Front air bag system: 3 second blink followed by a 0.5 second blink repeated.

Air bag warning lamp operation (user mode)

SRS condition

Reference item

• No malfunction is detected
• No further action is necessary

—

• The system is malfunctioning
• Self diagnostic result is not erased af-

ter repair

Erase “Self Diagnostic Result”
Refer to

SRC-16, "CONSULT-III

Function"

, How to Erase Self-diag-

nostic Result

Battery voltage is low (less than 9 V)

Check “CAUSE OF WARNING” in
“Special Function” with CONSULT-III
Refer to

SRC-16, "CONSULT-III

Function"

Intermittent malfunction is detected in
the past

Go to

GI-42, "Intermittent Incident"

• Air bag is deployed
• Seat belt pre-tensioner is deployed

Go to

SRC-140, "Diagnosis Proce-

dure"

SRC-141, "Diagnosis Pro-

cedure"

• Air bag diagnosis sensor unit is mal-

functioning

• Air bag power supply circuit is mal-

functioning

• Air bag warning lamp circuit is mal-

functioning

Go to

SRC-148, "Diagnosis Proce-

dure"

• Air bag diagnosis sensor unit is mal-

functioning

• Air bag warning lamp circuit is mal-

functioning

Go to

SRC-149, "Diagnosis Proce-

dure"

SHIA0011E

SHIA0012E

SHIA0013E

SHIA0014E

SRC-14

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (AIR BAG)

• Side air bag system: Two 1.5 second blinks followed by a 0.5 second blink repeated.

Front air bag system

Side air bag system

How to Erase Self-diagnostic Result

After a malfunction is repaired, turn the ignition switch OFF for one second or more, then turn ignition switch
ON. The diagnosis mode returns to the user mode. At that time the self-diagnostic result is cleared.

EXAMPLE OF AIR BAG WARNING LAMP OPERATION IN THE DIAGNOSIS MODE

System Normal

When system is normal.

Single System Malfunction

• Front air bag system

Number of 0.5 second blinks

Malfunctioning items

• Self-diagnostic result is not erased after repair
• Intermittent malfunction is detected in the past

Seat belt pre-tensioner RH

Driver air bag module

Seat belt pre-tensioner LH

Crash zone sensor

Air bag diagnosis sensor unit

Passenger air bag module

Passenger air bag cutoff switch

Passenger air bag OFF indicator

Lap pre-tensioner RH

Lap pre-tensioner LH

Air bag diagnosis sensor unit

Number of 0.5-second blinks

Malfunctioning items

Side air bag module RH

Side air bag module LH

Satellite sensor RH

Satellite sensor LH

Curtain air bag module RH

Curtain air bag module LH

JMHIA0945GB

DIAGNOSIS SYSTEM (AIR BAG)

SRC-15

< SYSTEM DESCRIPTION >

SRC

When air bag diagnosis sensor unit system (Item display 1) is malfunctioning.

• Side air bag system

When curtain air bag module LH system (Item display 1) is malfunctioning.

Multiple Systems Malfunction

• Front air bag system

When driver air bag module (Item display 1) and air bag diagnosis sensor unit system (Item display 2) are
malfunctioning.

• Side air bag system

When satellite sensor LH (Item display1) and curtain air bag module LH system (Item display 2) are malfunc-
tioning.

• Front air bag system and side air bag system

JMHIA0946GB

JMHIA0948GB

JMHIA0947GB

JMHIA0949GB

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Juke F15 (2012 year). Service Repair Manual — part 333

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