2003 NISSAN X-TRAIL sensor

PRECAUTIONS
SRS-3
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SRS
PRECAUTIONSPFP:00001
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER”
EHS000BG
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.
WA RN ING:
lTo 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 should be per-
formed by an authorized NISSAN/INFINITI dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
lDo 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 harness connector.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” ServiceEHS000BH
lDo not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
lBefore servicing the SRS, turn ignition switch “OFF”, disconnect battery ground cable and wait at least 3
minutes.
For approximately 3 minutes after the cables is 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.
lDiagnosis sensor unit must always be installed with their arrow marks “Ü” 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.
lThe 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.
lHandle 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.
lConduct self-diagnosis to check entire SRS for proper function after replacing any components.
lAfter air bag inflates, the front instrument panel assembly should be replaced if damaged.
Trouble Diagnosis PrecautionEHS000BI
Whenyoureadwiringdiagrams,refertothefollowings:
l“HOW TO READ WIRING DIAGRAMS” in GI section
lPG-2, "POWER SUPPLY ROUTING"in PG section
When you perform trouble diagnosis, refer to the followings:
l“HOW TO FOLLOW TEST GROUP IN TROUBLE DIAGNOSIS” in GI section
l“HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT” in GI section
Check for any service bulletins before servicing the vehicle.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS-5
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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”
position.
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.
Front Side Air BagEHS000CJ
Front side air bag is built-in type.
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

SRS-14
TROUBLE DIAGNOSIS
CONSULT-II FUNCTION
EHS000CP
DIAGNOSIS MODE FOR CONSULT-II
l“SELF-DIAG [CURRENT]”
A current Self-diagnosis result (also indicated by the number of warning lamp flashes in the Diagnosis
mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requiring
repairs.
l“SELF-DIAG [PAST]”
Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The stored
results are not erased until memory erasing is executed.
l“TROUBLE DIAG RECORD”
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be dis-
played on the CONSULT-II screen.
l“ECU DISCRIMINATED NO.”
The diagnosis sensor unit for each vehicle model is assigned with its own, individual classification num-
ber. This number will be displayed on the CONSULT-II screen, as shown below. When replacing the diag-
nosis sensor unit, refer to the part number for the compatibility. After installation, replacement with a
correct unit can be checked by confirming this classification number on the CONSULT-II screen.
HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II
From User Mode to Diagnosis Mode
After selecting “AIR BAG” on the “SELECT SYSTEM” screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears, Diagnosis mode automatically changes to User mode.
HOW TO ERASE SELF-DIAGNOSIS RESULTS
l“SELF-DIAG [CURRENT]”
A current Self-diagnosis result is displayed on the CONSULT-II screen in real time.
After the malfunction is repaired completely, no malfunction is detected on “SELF-DIAG [CURRENT]”.
l“SELF-DIAG [PAST]”
SRS803
SRS804

TROUBLE DIAGNOSIS
SRS-17
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SRS
Warninglampexamples
Trouble Diagnoses with CONSULT–IIEHS000CS
DIAGNOSTIC PROCEDURE 2
“AIR BAG” warning lamp operation-User mode- SRS condition Reference item
lNo malfunction is detected.
lNo further action is necessary.—
lThe system is malfunctioning and
need to be repaired as indicated.Go toSRS-20, "DIAGNOSTIC
PROCEDURE 4".
lAir bag is deployed.
lSeat belt pre-tensioner is deployed.Go toSRS-46, "
COLLISION DIAG-
NOSIS".
lDiagnosis sensor unit is malfunction-
ing.
lAir bag power supply circuit is mal-
functioning.
lSRS air bag warning lamp circuit is
malfunctioning.Go toSRS-25, "
Trouble Diagnoses:
“AIR BAG”Warning Lamp Does Not
Tu rn O ff".
lDiagnosis sensor unit is malfunction-
ing.
lAir bag warning lamp circuit is mal-
functioning.Go toSRS-26, "
Trouble Diagnoses:
“AIR BAG”Warning Lamp Does Not
Tu rn O n".
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E

TROUBLE DIAGNOSIS
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SRS
a. Touch “SELF-DIAG [CURRENT]”.
lDiagnostic code is displayed on “SELF-DIAG [CURRENT]”.
i. If the malfunction is displayed in the “SRS Operation Check (Air bag warning lamp blinking) but no mal-
function is displayed in the “SELF-DIAG [CURRENT]”, the following possibilities shall be checked.
lAfter the malfunction part is repaired, the diagnosis results in “SELF-DIAG [PAST]” has not been
erased.
lAn intermittent malfunction has been stored in the past.
NOTE:
Intermittent malfunction is a malfunction that has occurred once in the past, but soon recovered. Refer to
“SRS-20, "
DIAGNOSTIC PROCEDURE 3"andSRS-20, "DIAGNOSTIC PROCEDURE 4".
b. Touch “SELF-DIAG [PAST].
lThe diagnostic code is displayed until erasing the memory in
the “SELF-DIAG [CURRENT]”.
c. Touch “TROUBLE DIAG RECORD”.
lThe diagnosis results (malfunction parts stored in the diagno-
sis sensor unit) stored in the self-diagnosis results are dis-
played.
lThe memory of “TROUBLE DIAG RECORD” cannot be
erased.
7. Each diagnostic code is displayed.
8. Touch “PRINT,” if required.
9. Based on each diagnosis result, repair or replace the malfunc-
tion parts.
CAUTION:
Be sure to start the work after the following steps. Turn the
ignition switch OFF, and disconnect the battery ground
cable. Then wait for at least 3 minutes.
SHIA0203E
SHIA0181E
SHIA0182E
SHIA0180E

SRS-20
TROUBLE DIAGNOSIS
10. After repairing the malfunction, touch “SELF-DIAG [CURRENT]”
to check that “No DTC IS DETECTED” is displayed.
lAfter checking the display, touch “ERASE”.
lIf any malfunction is displayed on “SELF-DIAG [CURRENT],
repair or replace the malfunctioning again.
11. Touch “BACK” key of CONSULT-II to “SELECT SYSTEM”
screen. Touch “SELF-DIAG [PAST].
12. Check that no malfunction is detected on “SELF-DIAG [PAST].
lIf any malfunction is deployed, Touch “ERASE” in the “SELF-
DIAG [CURRENT]” screen, and check the display.
13. Turn ignition switch OFF, then turn off and disconnect CONSULT-II.
14. Turn ignition switch ON, and check the system with the SRS air bag warning lamp (User mode).
15. Check that no malfunction is detected. Now the diagnosis is complete.
DIAGNOSTIC PROCEDURE 3
Inspecting SRS malfunctioning record
If the warning lampreys mode) indicates any malfunction, but no malfunction is detected in “SELF-DIAG
[CURRENT]” on CONSULT-II, carry out the following steps.
lErase the memory that stored in diagnosis sensor unit.
lCheck that no malfunction is detected on “SELF-DIAG [PAST] and “TROUBLE DIAG RECORD” then go
toSRS-20, "
DIAGNOSTIC PROCEDURE 3".
lCheck that the battery voltage is 9V or more. If it is below 9V, charge the battery.
DIAGNOSTIC PROCEDURE 4
Inspecting SRS malfunctioning parts by using CONSULT-II — DIAGNOSIS MODE
lTouch “SELF-DIAG[PAST]” on CONSULT–II, repair or replace
the malfunction part displayed on the screen.
lIf no malfunction is displayed on “SELF-DIAG [PAST]”, touch
“BACK” key of CONSULT-II, then touch “TROUBLE DIAG
RECORD”. Malfunction part is displayed on CONSULT–II
screen, and repair or replace the malfunction part displayed on
the screen.
SRS701
SRS702
SHIA0181E

TROUBLE DIAGNOSIS
SRS-21
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SRS
Diagnostic code chart
Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”
NO DTC IS
DETECTED.When malfunction is
indicated by the “AIR
BAG” warning lamp in
User mode.
lLow battery voltage (Less than 9V)lGo toSRS-20, "DIAGNOSTIC PRO-
CEDURE 3".
lSelf-diagnostic result “SELF-DIAG
[PAST]” (previously stored in the
memory) might not be erased after
repair.
lIntermittent malfunction has been
detected in the past.
lGo toSRS-17, "DIAGNOSTIC PRO-
CEDURE 2".
lNo malfunction is detected. —
DRIVER AIRBAG
MODULE
[OPEN]
lDriver air bag module circuit is open (including the spiral cable). 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace driver air bag module.
(Before disposal, it must be
deployed.)
4. Replace the spiral cable.
5. Replace the diagnosis sensor unit.
6. Replace the related harness. DRIVER AIRBAG
MODULE
[VB-SHORT]
lDriver air bag module circuit is shorted to some power supply
circuit (including the spiral cable).
DRIVER AIRBAG
MODULE
[GND-SHORT]
lDriver air bag module circuit is shorted to ground (including the
spiral cable).
DRIVER AIRBAG
MODULE
[SHORT]
lDriver air bag module circuits are shorted to each other.
ASSIST A/B MODULE
[VB-SHORT]
lFront passenger air bag module circuit is shorted to some
power supply circuit.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger air bag
module. (Before disposal of it, it
must be deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. ASSIST A/B MODULE
[OPEN]
lFront passenger air bag module circuit is open.
ASSIST A/B MODULE
[GND-SHORT]
lFront passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
lFront passenger air bag module circuits are shorted to each
other.
SIDE MODULE LH
[OPEN]
lFront LH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front LH side air bag mod-
ule.
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE LH
[VB-SHORT]
lFront LH side air bag module circuit is shorted to some power
supply circuit.
SIDE MODULE LH
[GND-SHORT]
lFront LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]
lFront LH side air bag module circuits are shorted to each other.
SIDE MODULE RH
[OPEN]
lFront RH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front RH side air bag mod-
ule.
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]
lFront RH side air bag module circuit is shorted to some power
supply circuit.
SIDE MODULE RH
[GND-SHORT]
lFront RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
lFront RH side air bag module circuits are shorted to each other.

SRS-22
TROUBLE DIAGNOSIS
NOTE:
lFollow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is eliminated using air
bag warning lamp or CONSULT-II each time repair is finished. If malfunction is still observed, proceed to the next step. When mal-
function is eliminated, further repair work is not required.
lFollow the procedures in numerical order when repairing malfunctioning parts, then make the system check.
lThe screen contents are the same as the self-diagnosis results, self-diagnosis results “SELF-DIAG [CURRENT]” and “SELF-DIAG
[PAST]”.
Trouble Diagnoses Without CONSULT-IIEHS000CT
DIAGNOSTIC PROCEDURE 5
CAUTION:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1. Turn ignition switch “ON”.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]
SATELLITE SENS LH
[UNMATCH]lLH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the LH side air bag (satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]
SATELLITE SENS RH
[UNMATCH]
lRH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the RH side air bag (satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[OPEN]
lThe circuit for front LH pre-tensioner is open.
1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace front LH seat belt.
(Before disposing, it must be deacti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[VB-SHORT]
lThe circuit for front LH pre-tensioner is shorted to some power
supply circuit.
PRE-TEN FRONT LH
[GND-SHORT]
lThe circuit for front LH pre-tensioner is shorted to ground.
PRE-TEN FRONT RH
[OPEN]
lThe circuit for front RH pre-tensioner is shorted to some power
supply circuit.
1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace front RH seat belt.
(Before disposing, it must be deacti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[VB-SHORT]
lThe circuit for front RH pre-tensioner is shorted to some power
supply circuit.
PRE-TEN FRONT RH
[GND-SHORT]
lThe circuit for front RH pre-tensioner is shorted to ground.
CONTROL UNIT
lDiagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the diagnosis sensor unit. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”