2001 NISSAN X-TRAIL sensor

SRS-22
TROUBLE DIAGNOSIS
NOTE:
●Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunc-
tion 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 malfunction is eliminated, further repair work is not
required.
●Follow the procedure in numerical order when repairing malfunctioning parts, then make the system
check.
●The screen contents are the same as the self-diagnosis results, "self-diagnosis results "SELF-DIAG
[CURRENT]" and "SELF-DIAG [PAST]".
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]●LH 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]
●RH 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]
●Front LH pre-tensioner circuit is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace the front LH seat belt.
(Before disposal, it must be acti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[VB-SHORT]
●Front LH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT LH
[GND-SHORT]
●Front LH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT LH
[SHORT]
●Front LH pre-tensioner circuit is shorted between lines.
PRE-TEN FRONT RH
[OPEN]
●Front RH pre-tensioner circuit is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace the front RH seat belt.
(Before disposal, it must be acti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[VB-SHORT]
●Front RH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT RH
[GND-SHORT]
●Front RH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT RH
[SHORT]
●Front RH pre-tensioner circuit is shorted between lines.
CONTROL UNIT
●Diagnosis 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”

TROUBLE DIAGNOSIS
SRS-27
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SRS
Trouble Diagnoses: “AIR BAG” Warning Lamp Does Not Turn OffEHS000OB
DIAGNOSTIC PROCEDURE 5
1.SEE THE DEPLOYMENT OF AIR BAG MODULE
Is air bag module deployed?
Ye s o r N o
Yes >> Refer to SRS-47, "COLLISION DIAGNOSIS" .
No >> GO TO 2.
2.CHECK THE AIR BAG FUSE
Check the fuse (No. 9).
Refer to PG-2, "
POWER SUPPLY ROUTING" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK AIR BAG FUSE AGAIN
Replace “AIR BAG” fuse and turn ignition switch ON.
Is
“AIR BAG” fuse blown again?
Yes >> Repair main harness.
No >>INSPECTION END
4.CHECK DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch “START”.
●Is “AIR BAG” displayed on CONSULT-II?
Ye s o r N o
Ye s > > G O T O 5 .
No >> Visually check the wiring harness connection of diagno-
sis sensor unit. If the harness connection check result is
OK, replace diagnosis sensor unit.
5.CHECK HARNESS CONNECTION
Is harness connection between warning lamp and diagnosis sensor unit OK?
OK or NG
OK >> Replace diagnosis sensor unit.
NG >> Connect “AIR BAG” warning lamp and diagnosis sensor unit connector properly. If “AIR BAG”
warning lamp still does not go off, replace harness.
SRS771

SRS-28
TROUBLE DIAGNOSIS
Trouble Diagnoses: “AIR BAG” Warning Lamp Does Not Turn On
EHS000OC
DIAGNOSTIC PROCEDURE 6
1. CHECK “METER” FUSE
Check the “METER” fuse (No. 11).
Refer to PG-2, "
POWER SUPPLY ROUTING" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK “METER” FUSE AGAIN
Replace meter fuse and turn ignition switch ON.
Is meter fuse blown again?
Yes >> Repair the related harness.
No >>INSPECTION END
3. CHECK HARNESS CONNECTION BETWEEN DIAGNOSIS SENSOR UNIT AND COMBINATION
METER
Disconnect diagnosis sensor unit connector and turn ignition switch “ON”.
●Does “AIR BAG” warning lamp turn on?
Ye s o r N o
Yes >> Replace diagnosis sensor unit.
No >> Check the ground circuit of “AIR BAG” warning lamp.

SRS-38
SIDE AIR BAG (SATELLITE) SENSOR
SIDE AIR BAG (SATELLITE) SENSOR
PFP:98830
Removal and InstallationEHS000DB
REMOVAL
CAUTION:
●Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.
1. Remove seat belt pre-tensioner seat belt. Refer to SB-3,
"Removal and Installation of Front Seat Belt" .
2. Remove side air bag (Satellite) sensor fixing nuts.
3. Remove the side air bag (Satellite) sensor connector.
CAUTION:
●Do not use old nuts, replace with new ones.
●Check side air bag (Satellite) sensor to ensure they are free
of deformities, dents, cracks or rust. If it shows any visible
signs of damage, replace it with new one.
●Do not attempt to disassemble side air bag (Satellite) sen-
sor.
●Replace side air bag (Satellite) sensor if it has been dropped or sustained an impact.
●When the front side air bag deploys, always replace it with a new one.
INSTALLATION
To install, reverse the removal procedure sequence.
CAUTION:
●Check side air bag (Satellite) sensor for proper installation.
●After replacement of side air bag (Satellite) sensor, perform self-diagnosis to check that no mal-
function is detected. Refer to SRS-16, "
SRS Operation Check" .
PHIA0029E

SRS-40
DIAGNOSIS SENSOR UNIT
DIAGNOSIS SENSOR UNIT
PFP:28556
Removal and InstallationEHS000DD
REMOVAL
CAUTION:
●Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.
1. Remove center console. Refer to IP-3, "
INSTRUMENT PANEL
ASSEMBLY" .
2. Disconnect diagnosis sensor unit connector.
3. Remove ground bolt and diagnosis sensor unit fixing bolts.
CAUTION:
● Do not use old bolts. Replace with new ones.
●Check diagnosis sensor unit brackets to ensure it is free of
deformities, dents, cracks or rust. If it shows any visible
signs of damage, replace it with new one.
●Replace diagnosis sensor unit if it has been dropped or
sustained an impact.
INSTALLATION
To install, reverse the removal procedure sequence.
CAUTION:
●Check the diagnosis sensor unit for proper installation.
●After replacement of diagnosis sensor unit, perform self-diagnosis to check that no malfunction is
detected. Refer to SRS-16, "
SRS Operation Check" .
ECU DISCRIMINATED NO.
For NISSAN MODEL T30, the diagnosis sensor unit classification numbers assigned are AA12(without front
side air bag) and AA01(with front side air bag).
PHIA0031E

COLLISION DIAGNOSIS
SRS-47
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SRS
COLLISION DIAGNOSISPFP:00015
For Frontal CollisionEHS000DF
To repair the SRS, perform the following steps.
WHEN SRS (EXCEPT THE FRONT SIDE AIR BAG) IS ACTIVATED IN A COLLISION:
1. Replace the diagnosis sensor unit.
2. Remove the air bag modules (except the front side air bag module), bracket and seat belt pre-tensioner
assemblies.
3. Check the SRS components using the table shown below:
–Replace any SRS components showing visible signs of damage (dents, cracks and deformation).
4. Install new air bag modules (except the front side air bag module) and seat belt pre-tensioner assemblies.
5. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-16, "
SRS Operation
Check" for details. Ensure entire SRS operation properly.
WHEN SRS IS NOT ACTIVATED IN A COLLISION:
1. Check the SRS components using the table shown below:
–Replace any SRS components showing visible signs of damage (dents, cracks and deformation).
2. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-16, "
SRS Operation
Check" for details. Ensure entire SRS operation properly.
SRS INSPECTION (FOR FRONTAL COLLISION)
Part SRS is activated SRS is NOT activated
Air bag module
(driver or front pas-
senger air bag mod-
ule)REPLACE
Install with new bolts.1. Remove air bag module. Check harness cover and connectors for damage, termi-
nals for deformities, and harness for binding.
2.
–Install driver air bag module into the steering wheel to check fit and alignment with
the wheel.
–Install passenger air bag module into the instrument panel to check fit with the
instrument panel.
3. No damage found, reinstall with new bolts.
4. If damaged—REPLACE. Install air bag modules with new special bolts
Air bag must be deployed before discarding.
Seat belt pre-ten-
sioner assemblyREPLACE
Install seat belt pre-
tensioner with new
bolts.1. Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities, and
harness for binding.
2. Check belts for damage and anchors for loose mounting.
3. Check retractor for smooth operation.
4. If no damage is found, reinstall seat belt pre-tensioner assembly.
5. If damaged—REPLACE. Install the seat belt pre-tensioners with new bolts.
Seat belt pre-tensioners must be deployed before discarding.
Diagnosis sensor unit REPLACE
Install with new bolts.1. Check case for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall with new bolts and ground bolt.
4. If damaged—REPLACE. Install diagnosis sensor unit with new bolts and ground
bolt.
Steering wheel 1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
3. Install air bag module to check fit or alignment with steering wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall with bolts.
6. If damaged—REPLACE.

SRS-48
COLLISION DIAGNOSIS
For Side Collision
EHS000DG
WHEN THE SIDE AIR BAG IS ACTIVATED IN THE SIDE COLLISION:
1. Replace the following component:
–All parts of front seat back (including front seat back frame) with front side air bag module (on the side on
which front side air bag is activated)
–Diagnosis sensor unit
–Side air bag (Satellite) sensor
2. Check the SRS components and the related parts using the table shown below.
–Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
3. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-16, "
SRS Operation
Check" . Ensure entire SRS operation properly.
WHEN SRS IS NOT ACTIVATED IN THE SIDE COLLISION:
1. Check the SRS components and the related parts using the table shown below.
–Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
2. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-16, "
SRS Operation
Check" . Ensure entire SRS operation properly.
Spiral cable 1. Visually check spiral cable and combination switch for damage.
2. Check connectors and protective tape for damage.
3. Check steering wheel for noise, binding or heavy operation.
4. If no damage is found, reinstall with bolts.
5. If damaged—REPLACE.
Harness and Connec-
tors1. Check connectors for poor connection, damage, and terminals for deformities.
2. Check harness for binding, chafing, cuts, or deformities.
3. If no damage is found, reinstall the harness and connectors.
4. Damaged—REPLACE damaged section of harness. Do not attempt to repair, splice or modify any SRS
harness.
Instrument panel 1. Visually check instrumental panel for damage.
2. If no damage is found, reinstall the instrument panel.
3. If damaged—REPLACE the instrument panel with bolts. Part SRS is activated SRS is NOT activated

COLLISION DIAGNOSIS
SRS-49
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SRS
SRS INSPECTION (FOR SIDE COLLISION)
PartFront side air bag and
side curtain air bag is
activatedFront side air bag and side curtain air bag is NOT activated
Front LH or RH side
air bag moduleREPLACE all parts of
seat back with
deployed front side
air bag module.1. Check for visible signs of damage (dents, tears, deformation) of the seat back on
the collision side.
2. If damaged—REPLACE the damaged seat parts with new bolts and remove the
front side air bag module.
3. Check for visible signs of damaged (tears etc.) of the front LH or RH side air bag
module.
4. Check harness and connectors for damage, and terminals for deformities.
5. If no damaged is found, reinstall the front LH or RH side air bag module with new
nuts.
6. If damaged—REPLACE the front LH or RH side air bag module with new nut.
Air bag must be deployed before disposing of it.
LH or RH side air bag
(Satellite) sensor REPLACE the side
air bag (Satellite)
sensor on the colli-
sion side with new
nuts.
(Repair the center pil-
lar inner, etc. before
installing new one if
damaged.)1. Remove the LH or RH side air bag (Satellite) sensor on the collision side. Check
harness connectors for damage, terminals for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the LH or RH
side air bag (Satellite) sensor.
3. Install the LH or RH side air bag (Satellite) sensor to check fit.
4. If no damage is found, reinstall the LH or RH side sir bag (Satellite) sensor with
new nuts.
5. If damaged—REPLACE the LH or RH side air bag (Satellite) sensor with new
nuts.
Diagnosis sensor unit REPLACE the diag-
nosis sensor unit with
the new bolts.1. Check case and bracket for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall the diagnosis sensor unit with new bolts and
ground bolt.
4. If damaged—REPLACE the diagnosis sensor unit with new bolts and ground bolt.
Seat belt pre-ten-
sioner assembly1. Check if the seat belt can be extended smoothly.
If the seat belt cannot be extended smoothly,
–Check for deformities of the center pillar inner.
–If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner assembly.
2. Remove the seat belt pre-tensioner assembly on the collision side. Check harness cover and connectors
for damage, terminals for deformities, and harness for binding.
3. Check for visible signs of damage (dents, cracks, deformation) of the seat belt pre-tensioner assembly.
4. If no damage is found, reinstall the seat belt pre-tensioner assembly.
5. If damaged—REPLACE the seat belt pre-tensioner assembly with new bolts.
The seat belt pre-tensioner assembly must be deployed before disposing of it.
Seat with front side
air bagREPLACE all parts of
front seat back
(including front seat
back frame)1. Visually check the seat on the collision side.
2. Remove the seat on the collision side and check the following for damage and
deformities.
–Harness, connectors and terminals
–Frame and recliner (for front and rear seat), and also adjuster and slides (for front
seat)
3. If no damage is found, reinstall the seat.
4. If damaged—REPLACE the damaged seat parts with new bolts.
Center pillar inner 1. Check the center pillar inner on the collision side for damage (dents, cracks, deformation).
2. If damaged—REPAIR the center pillar inner.
Trim 1. Check for visible signs of damage (dents, cracks, deformation) of the interior trim on the collision side.
2. If damaged—REPLACE the damaged trim parts.