Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2003_Q45 srs

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

H RESTRAINTS

B
SECTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) C

E
CONTENTS
PRECAUTIONS ......................................................... 3
. Trouble diagnoses without CONSULT-II. ............... 32 . F
Precautions for Supplemental Restraint System DIAGNOSTIC PROCEDURE 6 .......................... 32 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- WARNING LAMP FLASH CODE CHART .......... 33 .
SIONER" ................................................................. 3
. Trouble Diagnoses: "AIR BAG" Warning Lamp Does G
Precautions for SRS "AIR BAG" and "SEAT BELT Not Turn Off ........................................................... 37
.
PRE-TENSIONER" Service .................................... 3 . DIAGNOSTIC PROCEDURE 7 .......................... 37 .
Trouble Diagnosis Precaution ................................. 3 . Trouble Diagnoses: "AIR BAG" Warning Lamp Does
SRS
PREPARATION .......................................................... 4
. Not Turn On ........................................................... 38
.
Special Service Tools .............................................. 4
. DIAGNOSTIC PROCEDURE 8 .......................... 38 .
Commercial Service Tools ....................................... 5 . DRIVER AIR BAG MODULE ................................... 39 .
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ...... 6 . Removal and Installation ....................................... 39 . I
SRS Configuration .................................................. 6
. REMOVAL .......................................................... 39
.
Front Seat Belt Pre-Tensioner With Load Limiter ..... 7 INSTALLATION .................................................. 40 .
Front Side Air Bag ................................................... 7
. SPIRAL CABLE ....................................................... 42. J
Side Curtain Air Bag ................................................ 7
. Removal and Installation ....................................... 42 .
TROUBLE DIAGNOSIS ............................................. 8 . REMOVAL .......................................................... 42
.
Trouble Diagnoses Introduction .............................. 8 . INSTALLATION .................................................. 43 .
K
DIAGNOSIS FUNCTION ...................................... 8 . FRONT PASSENGER AIR BAG MODULE ............. 44 .
HOW TO PERFORM TROUBLE DIAGNOSES Removal and Installation ....................................... 44 .
FOR QUICK AND ACCURATE REPAIR .............. 8 . REMOVAL .......................................................... 44
.
WORK FLOW ....................................................... 9
. INSTALLATION .................................................. 44 . L
SRS Components Parts Location .......................... 10 . FRONT SIDE AIR BAG MODULE ........................... 45 .
Schematic ..............................................................11
. Removal and Installation ....................................... 45 .
Wiring Diagram-SRS- ............................................ 12 . REMOVAL .......................................................... 45
. M
CONSULT-II Function ........................................... 18 . INSTALLATION .................................................. 46 .
DIAGNOSIS MODE FOR CONSULT-II .............. 18 . SIDE CURTAIN AIR BAG MODULE ....................... 47 .
HOW TO CHANGE SELF-DIAGNOSIS MODE Removal and Installation ....................................... 47 .
WITH CONSULT-II ............................................. 18 . REMOVAL .......................................................... 47
.
HOW TO ERASE SELF-DIAGNOSIS RESULTS 19 ... INSTALLATION .................................................. 47 .
Self-Diagnosis Function (Without CONSULT-II) .... 20 . CRASH ZONE SENSOR .......................................... 48 .
HOW TO CHANGE SELF-DIAGNOSIS MODE... 20 Removal and Installation ....................................... 48 .
HOW TO ERASE SELF-DIAGNOSIS RESULTS 20 ... REMOVAL .......................................................... 48
.
SRS Operation Check ........................................... 20 . INSTALLATION .................................................. 48 .
DIAGNOSTIC PROCEDURE 1 .......................... 20 . SIDE AIR BAG (SATELLITE) SENSOR .................. 49 .
Trouble Diagnoses with CONSULT-II .................... 22 . Removal and Installation ....................................... 49 .
DIAGNOSTIC PROCEDURE 2 .......................... 22 . REMOVAL .......................................................... 49
.
DIAGNOSTIC PROCEDURE 3 .......................... 26 . INSTALLATION .................................................. 49 .
DIAGNOSTIC PROCEDURE 4 (CONTINUED FRONT SEAT BELT PRE-TENSIONER .................. 50 .
FROM DIAGNOSTIC PROCEDURE 2) ............. 28 . Removal and Installation ....................................... 50 .
DIAGNOSTIC PROCEDURE 5 .......................... 28 .

Revision; 2004 April SRS-1 2003 Q45
DIAGNOSIS SENSOR UNIT .................................... 51 . SEAT BELT PRE-TENSIONER WHILE
Removal and Installation ....................................... 51 . MOUNTED IN VEHICLE .....................................57 .
REMOVAL .......................................................... 51 . DISPOSING OF AIR BAG MODULE AND SEAT
INSTALLATION ................................................... 51 . BELT PRE-TENSIONER .....................................58 .
ECU DISCRIMINATED NO. ................................ 51 . COLLISION DIAGNOSIS .........................................59 .
DISPOSAL OF AIR BAG MODULE AND SEAT BELT For Frontal Collision ...............................................59
.
PRE-TENSIONER .................................................... 52 . SRS INSPECTION (FOR FRONTAL COLLI-
Caution for Air Bag Module and Seat Belt Pre-Ten- SION) ..................................................................59
.
sioner ..................................................................... 52
. For Side Collision ...................................................60
.
CHECKING DEPLOYMENT TOOL .................... 52 . WHEN THE SIDE AIR BAG IS ACTIVATED IN
DEPLOYMENT PROCEDURES FOR AIR BAG THE SIDE COLLISION: ......................................60 .
MODULE (OUTSIDE OF VEHICLE) .................. 53 . WHEN SRS IS NOT ACTIVATED IN THE SIDE
DEPLOYMENT PROCEDURES FOR SEAT COLLISION: ........................................................61.
BELT PRE-TENSIONER (OUTSIDE OF VEHI- SRS INSPECTION (FOR SIDE COLLISION) .....61 .
CLE) ................................................................... 57
.
DEPLOYMENT OF AIR BAG MODULE AND

Revision; 2004 April SRS-2 2003 Q45
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EHS000M8

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
q 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 per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q 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
harness connectors.
G
Precautions for SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
EHS0008B

q Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual. SRS
q Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt I
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.
q 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 instal- J
lation and replace as required.
q The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear. K
q Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad
side facing upward and place front side air bag module standing with stud bolt side setting bottom.
q Conduct self-diagnosis to check entire SRS for proper function after replacing any components. L
q After air bag inflates, the front instrument panel assembly should be replaced if damaged.
Trouble Diagnosis Precaution EHS0009L
M
When you read wiring diagrams, refer to the followings:
q GI-14, "How to Read Wiring Diagrams" in GI section
q PG-2, "POWER SUPPLY ROUTING" in PG section
When you perform trouble diagnosis, refer to the followings:
q GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section
q GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section
Check for any service bulletins before servicing the vehicle.

Revision; 2004 April SRS-3 2003 Q45
PREPARATION

PREPARATION PFP:00002

Special Service Tools EHS0008C

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.) Description
Tool name

Use for special bolts [TAMPER
HT61961000 and HT62152000 RESISTANT TORX (Size T50)]
combined a: 3.5 (0.138) dia.
(J38219) b: 8.5 - 8.6 (0.335 - 0.339) dia.
*Special torx bit c: approx. 10 (0.39) sq.
Unit: mm (in)
S-NT361

KV99105300
(J41246) Anchoring air bag module
Air bag module bracket

S-NT354

KV99106400
Disposing of air bag module and front seat
(J38381)
belt pre-tensioner
Deployment tool

S-NT357

(J38381-70)
Connection between the deployment tool
Deployment tool adapter for driver
and driver air bag module
air bag module

SHIA0172E

(J38381-65)
Connection between the deployment tool
Deployment tool adapter for front
and front passenger air bag module
passenger air bag

SHIA0173E

(J38381-80)
Deployment tool adapter for front Connection between the deployment tool
seat belt pre-tensioner (Yellow and front seat belt pre-tensioner
connector)

PHIA0184E

Revision; 2004 April SRS-4 2003 Q45
PREPARATION

Tool number
(Kent-Moore No.) Description A
Tool name

B
KV99109000
(J44230) Connection between the deployment tool
Deployment tool adapters for side and side curtain air bag module
curtain air bag C

ZZA1190D

KV99108300
(J38381-35) Connection between the deployment tool
Deployment tool adapters for front and front side air bag module E
side air bag

ZZA1166D
F

(J-44615) G
Removing and installation air bag lock
Air bag lock master key set

SRS
LRS191

Commercial Service Tools EHS0008Z

I
Tool name Description

Tamper resistant torx socket Size:T30
K

S-NT757

Revision; 2004 April SRS-5 2003 Q45
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) PFP:28556

SRS Configuration EHS0009E

WHIA0042E

The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in the ON or START posi-
tion.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module and front passenger air bag module are activated in a frontal col-
lision but not in a side collision.
SRS configurations which are activated for some collision modes are as follows;
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module

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