NISSAN X-TRAIL 2005 Service Repair Manual

SEAT BELT WARNING SYSTEM
SB-23
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SB

3. CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
1. Disconnect seat pressure switch harness connector.
2. Check continuity between seat belt buckle switch (passenger
side) harness connector B352 (B113) terminal 13 (1) and seat
belt pressure switch harness connector B401 terminal 3.
NOTE:
( ): without power seat
OK or NG
OK >> GO TO 4.
NG >> Replace seat belt buckle switch (passenger side).
4. CHECK SEAT PRESSURE SWITCH
Check continuity between seat pressure switch terminal 3 and 4.
OK or NG
OK >> GO TO 5.
NG >> Replace seat pressure switch.
5. HARNESS CONTINUITY INSPECTION
Check continuity between seat pressure switch harness connector
B401 terminal 4 ( * ) and ground.
NOTE:
* :
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between seat pressure switch
and seat belt buckle switch.
Terminal Condition Continuity
13 (1) 3Passenger side seat buckle switch
FastenNo
Passenger side seat buckle switch
UnfastenYe s
PHIA0635E
Terminal Condition Continuity
34Seat pressure switch ON Yes
Seat pressure switch OFF No
PHIA0637E
4 ( * ) – Ground : Continuity should exist.
With power seat models :OR
Without power seat models :B
PHIA0638E

SB-24
SEAT BELT WARNING SYSTEM

Vehicle Speed Signal InspectionEHS000GZ
1. VEHICLE SPEED INPUT SIGNAL INSPECTION
Check the signal between control unit connector M31 terminal 36 (*) and ground with oscilloscope when vehi-
cle speed is approx. 40 km/h (25 MPH).
OK or NG
OK >> Vehicle speed signal is OK.
NG >> GO TO 2.
2. HARNESS CONTINUITY INSPECTION
1. Turn ignition switch “OFF”.
2. Disconnect time control unit connector and combination meter
harness connector.
3. Check continuity between combination meter connector M44
terminal 33 (L/W) and time control unit M31 terminal 36 (L/W).
4. Check continuity between combination meter connector M44
terminal 33 (L/W) and ground.
OK or NG
OK >> Vehicle speed signal circuit is OK. Further inspection is necessary. Refer to DI-22, "How to Per-
form Trouble Diagnosis" .
NG >> Replace or replace harness between combination meter and time control unit.
Terminal
Voltag e
(+) (–)
36
(L/B: A/T models)
(L/Y: M/T models)Ground
PHIA0647EELF1080D
33 (L/W) – 36 (L/W) : Continuity should exist.
33 (L/W) – Ground : Continuity should not exist.
PHIA0640E

SRS-1
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
H RESTRAINTS
CONTENTS
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SECTION SRS
A
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SRS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for SRS “AIR BAG” and “SEAT BELT
PRE-TENSIONER” Service ..................................... 3
Wiring Diagrams and Trouble Diagnosis .................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 5
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ....... 6
SRS Configuration ................................................... 6
Front Seat Belt Pre-tensioner with Load Limiter ...... 6
Front Side Air Bag .................................................... 7
TROUBLE DIAGNOSIS .............................................. 8
Trouble Diagnosis Introduction ................................. 8
DIAGNOSIS FUNCTION ....................................... 8
HOW TO PERFORM TROUBLE DIAGNOSES
FOR QUICK AND ACCURATE REPAIR ............... 8
WORK FLOW ........................................................ 9
Component Parts Location ..................................... 10
Wiring Diagram — SRS — /LHD models ................ 11
Wiring Diagram — SRS — /RHD models .............. 13
CONSULT-II Function ............................................ 15
DIAGNOSIS MODE FOR CONSULT-II ............... 15
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITH CONSULT-II .............................................. 15
HOW TO ERASE SELF-DIAGNOSIS RESULTS ... 16
Self-Diagnosis Function (Without CONSULT-II) ..... 16
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITHOUT CONSULT-II ...................................... 16
HOW TO ERASE SELF-DIAGNOSIS RESULTS ... 16
SRS Operation Check ............................................ 17
DIAGNOSTIC PROCEDURE 1 ........................... 17
Trouble Diagnosis with CONSULT–II ..................... 19
DIAGNOSTIC PROCEDURE 2 ........................... 19
DIAGNOSTIC PROCEDURE 3 ........................... 21
Diagnostic Code Chart ........................................... 22
Trouble Diagnosis without CONSULT-II ................. 24
DIAGNOSTIC PROCEDURE 4 ........................... 24WARNING LAMP FLASH CODE CHART ........... 25
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn OFF ......................................................... 28
DIAGNOSTIC PROCEDURE 5 ........................... 28
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn ON ........................................................... 29
DIAGNOSTIC PROCEDURE 6 ........................... 29
DRIVER AIR BAG MODULE .................................... 30
Removal and Installation ........................................ 30
REMOVAL ........................................................... 30
INSTALLATION ................................................... 31
SPIRAL CABLE ........................................................ 33
Removal and Installation ........................................ 33
REMOVAL ........................................................... 33
INSTALLATION ................................................... 34
FRONT PASSENGER AIR BAG MODULE .............. 35
Removal and Installation ........................................ 35
REMOVAL ........................................................... 35
INSTALLATION ................................................... 36
FRONT SIDE AIR BAG MODULE ............................ 37
Removal and Installation ........................................ 37
REMOVAL ........................................................... 37
INSTALLATION ................................................... 38
SIDE AIR BAG (SATELLITE) SENSOR ................... 39
Removal and Installation ........................................ 39
REMOVAL ........................................................... 39
INSTALLATION ................................................... 39
FRONT SEAT BELT PRE-TENSIONER ................... 40
Removal and Installation ........................................ 40
DIAGNOSIS SENSOR UNIT ..................................... 41
Removal and Installation ........................................ 41
REMOVAL ........................................................... 41
INSTALLATION ................................................... 41
ECU DISCRIMINATED NO. ................................ 41
DISPOSAL OF AIR BAG MODULE AND SEAT BELT
PRE-TENSIONER ..................................................... 42
Caution for Air Bag Module and Seat Belt Pre-ten-
sioner ...................................................................... 42
CHECKING DEPLOYMENT TOOL ..................... 42
DEPLOYMENT PROCEDURES FOR AIR BAG

SRS-2 MODULE (OUTSIDE OF VEHICLE) ................... 43
DEPLOYMENT PROCEDURES FOR SEAT
BELT PRE-TENSIONER (OUTSIDE OF VEHI-
CLE) .................................................................... 46
DEPLOYMENT OF AIR BAG MODULE AND
SEAT BELT PRE-TENSIONER WHILE
MOUNTED IN VEHICLE ..................................... 47
DISPOSING OF AIR BAG MODULE AND SEAT
BELT PRE-TENSIONER ..................................... 47
COLLISION DIAGNOSIS .......................................... 48
For Frontal Collision ................................................ 48
WHEN SRS (EXCEPT THE FRONT SIDE AIR BAG) IS ACTIVATED IN A COLLISION: .............. 48
WHEN SRS IS NOT ACTIVATED IN A COLLI-
SION: ................................................................... 48
SRS INSPECTION (FOR FRONTAL COLLI-
SION) ................................................................... 48
For Side Collision .................................................... 49
WHEN THE SIDE AIR BAG IS ACTIVATED IN
THE SIDE COLLISION: ....................................... 49
WHEN SRS IS NOT ACTIVATED IN THE SIDE
COLLISION: ......................................................... 49
SRS INSPECTION (FOR SIDE COLLISION) ...... 50

PRECAUTIONS
SRS-3
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SRS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EHS001B0
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 and SB section of
this Service Manual.
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 per-
formed by an authorized NISSAN/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. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

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.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” ServiceEHS000BH

Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.

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
pre-tensioner to deploy. Therefore, do not 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 instal-
lation and replace as required.

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.

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.

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.
Wiring Diagrams and Trouble DiagnosisEHS001NG
When you read wiring diagrams, refer to the following:

GI-14, "How to Read Wiring Diagrams" in GI section

PG-2, "POWER SUPPLY ROUTING" in PG section
When you perform trouble diagnosis, refer to the following:

GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section

GI-23, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section
Check for any service bulletins before servicing the vehicle.

SRS-4
PREPARATION

PREPARATIONPFP:00002
Special Service ToolsEHS000CF
Tool number
Tool nameDescription
HT61961000 and HT62152000
combined
Tamper resistant TORX bitSize: T50
a: 3.5 (0.138) dia.
b: 8.5 - 8.6 (0.335 - 0.339) dia.
c: approx. 10 (0.39) sq.
Unit: mm (in)
KV99105300
Air bag module bracketAnchoring air bag module
KV99106400
Deployment toolDisposing of air bag module and front seat
belt pre-tensioner
KV99109700

Deployment tool adapter for front
seat belt pre-tensioner

Deployment tool adapter for
driver air bag module

Connecting between the deployment tool
and front seat belt pre-tensioner

Connecting between the deployment tool
and driver air bag module
KV99109000
Deployment tool adapters for side
air bagConnecting between the deployment tool
and side air bag module
KV99108300
Deployment tool adapters for front
passenger air bagConnecting between the deployment tool
and front passenger air bag module
S-NT361
S-NT354
S-NT357
SHIA0038J
ZZA1190D
ZZA1166D

PREPARATION
SRS-5
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SRS

Commercial Service ToolsEHS000CG
Tool name Description
Tamper resistant TORX bit Size: T30
S-NT757

SRS-6
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)PFP:28556
SRS ConfigurationEHS000CH
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;
Front Seat Belt Pre-tensioner with Load LimiterEHS000CI
The seat belt pre-tensioner system with load limiter is installed to
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
PHIA0037E
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module×——
Front passenger air bag module×——
Front LH seat belt pre-tensioner×——
Front RH seat belt pre-tensioner×——
Front LH side air bag module —×—
Front RH side air bag module — —×
SRS444

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS-7
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SRS

Front Side Air BagEHS000CJ
Front side air bag is built-in type.
The front seatbacks with built-in type side air bag have the labels
shown in figure at right.
PHIA0039E

SRS-8
TROUBLE DIAGNOSIS

TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionEHS000CL
CAUTION:

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harness can be identified by yellow and/or orange harnesses or har-
ness connector.

Do not attempt to 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-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function 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-II are as follows:
NOTE:
Seat belt pre-tensioner malfunction is indicated by “AIR BAG” warning lamp.
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information From Customer
WHAT..... Vehicle model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Preliminary Check
Check that the following parts are in good order.

Battery (Refer to SC-4, "How to Handle Battery" .)

Fuse (Refer to SRS-11, "Wiring Diagram — SRS — /LHD models" or SRS-13, "Wiring Diagram — SRS
— /RHD models" .)

System component-to-harness connections
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-II — X Monitoring