SRS Configuration .....................................................14
Seat Belt Pre-tensioner with Load Limiter.................15
Side Air Bag...............................................................15
SRS Component Parts Location ...............................16
Maintenance Items ....................................................16
Diagnosis Sensor Unit ...............................................17

REMOVAL AND INSTALLATION

...............................17

Seat Belt Pre-tensioner .............................................18

REMOVAL AND INSTALLATION

...............................18

Satellite Sensor..........................................................18

REMOVAL AND INSTALLATION

...............................18

Driver Air Bag Module and Spiral Cable ...................19

REMOVAL AND INSTALLATION

...............................19

REMOVAL

...............................................................19

INSTALLATION

........................................................21

Front Passenger Air Bag Module ..............................22

REMOVAL

...............................................................22

INSTALLATION

........................................................23

Side Air Bag Module..................................................23

REMOVAL

...............................................................23

INSTALLATION

........................................................25

Disposal of Air Bag Module and Seat Belt Pre-
tensioner ....................................................................25

CHECKING DEPLOYMENT TOOL

.............................26

DEPLOYMENT PROCEDURES FOR AIR BAG
MODULE (OUTSIDE OF VEHICLE)

...........................27

DEPLOYMENT PROCEDURES FOR SEAT BELT
PRE-TENSIONER (OUTSIDE OF VEHICLE)

..............29

DEPLOYMENT OF AIR BAG MODULE AND SEAT
BELT PRE-TENSIONER WHILE MOUNTED IN
VEHICLE

.................................................................30

DISPOSING OF AIR BAG MODULE AND SEAT
BELT PRE-TENSIONER

...........................................30

Trouble Diagnoses Introduction.................................32

DIAGNOSIS FUNCTION

...........................................32

DIAGNOSIS MODE FOR CONSULT-II

.......................32

HOW TO CHANGE SELF-DIAGNOSIS MODE

WITH CONSULT-II

...................................................33

HOW TO CHANGE SELF-DIAGNOSIS MODE

WITHOUT CONSULT-II

............................................33

HOW TO ERASE SELF-DIAGNOSIS RESULTS

.........33

How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................35

INFORMATION FROM CUSTOMER

..........................35

PRELIMINARY CHECK

............................................35

WORK FLOW

..........................................................36

Wiring Diagram - SRS -.............................................37
SRS Operation Check ...............................................39

DIAGNOSTIC PROCEDURE 1

..................................39

Trouble Diagnoses with CONSULT-II...................39

DIAGNOSTIC PROCEDURE 2

..................................39

DIAGNOSTIC PROCEDURE 3

..................................43

DIAGNOSTIC PROCEDURE 4 (CONTINUED
FROM DIAGNOSTIC PROCEDURE 2)

......................44

DIAGNOSTIC PROCEDURE 5

..................................45

Trouble Diagnoses without CONSULT-II..............49

IDX

DIAGNOSTIC PROCEDURE 6

..................................49

DIAGNOSTIC PROCEDURE 7

..................................54

DIAGNOSTIC PROCEDURE 8 (CONTINUED
FROM DIAGNOSTIC PROCEDURE 6)

......................56

Does Not Turn Off .....................................................57

DIAGNOSTIC PROCEDURE 9

..................................57

Does Not Turn On .....................................................59

DIAGNOSTIC PROCEDURE 10

................................59

Collision Diagnosis ....................................................60

FOR FRONTAL COLLISION

.....................................60

FOR SIDE COLLISION

.............................................62

CONTENTS

(Cont’d)

RS-2

Precautions

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) “AIR BAG” AND “SEAT BELT
PRE-TENSIONER”

NCRS0001

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS composition which is available to INFINITI G20 is as follows:

For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt
pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.

For a side collision
The Supplemental Restraint System consists of side air bag module (located in the outer side of front seat),
satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring harness,
warning lamp (one of components of air bags for a frontal collision).

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 INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses (except “SEAT BELT PRE-TENSIONER” connector) can be
identified by yellow harness connector.

PRECAUTION FOR SEAT BELT SERVICE

NCRS0002

CAUTION:

Before removing the seat belt pre-tensioner assembly, turn the ignition switch off, disconnect both
battery cables and wait at least 3 minutes.

Do not use electrical test equipment for seat belt pre-tensioner connector.

After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten-
sioner connector, check the system function. Refer to “SRS Operation Check” (RS-39) for details.

Do not use disassemble buckle or seat belt assembly.

Replace anchor bolts if they are deformed or worn out.

Never oil tongue and buckle.

If any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt
assembly.

If webbing is cut, frayed, or damaged, replace seat belt assembly.

When replacing seat belt assembly, use a genuine seat belt assembly.

After A Collision

NCRS0002S01

WARNING:

Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the
collision was minor and the belts show no damage and continue to operate properly. Failure to do so
could result in serious personal injury in an accident. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or improper operation is noted. Seat belt pre-tensioner
should be replaced even if the seat belts are not in use during a frontal collision in which the air bags
are deployed.
Replace any seat belt assembly (including anchor bolts) if:

The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
buckles show no damage and continue to operate properly).

The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide, etc.)

The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for dam-
age or distortion and repair as necessary before installing a new seat belt assembly.

Anchor bolts are deformed or worn out.

The seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision in
which the air bags are deployed.

IDX

SEAT BELTS

Precautions

RS-3

Front Seat Belt

REMOVAL AND INSTALLATION

=NCRS0003

1. Slide the seat all the way forward and tilt the seatback toward the front.
2. Remove adjuster cover.
3. Slide floor anchor cover.
4. Remove floor anchor bolt.
5. Remove shoulder anchor bolt.
6. Remove center pillar upper and lower garnish. Refer to BT-27, “SIDE AND FLOOR TRIM” for details.
7. Disconnect seat belt pre-tensioner connector.
8. Remove second sash guide.
9. Remove the screw securing seat belt pre-tensioner retractor, then remove seat belt and seat belt pre-ten-

sioner retractor.

10. Remove bolts securing seat belt adjuster, then remove seat belt adjuster.

SRS556-A

SEAT BELTS

Front Seat Belt

RS-4

Content .. 497 498 499 500 ..