Nissan Altima L32. Instruction — part 1366
DIAGNOSIS SENSOR UNIT
SR-17
< ON-VEHICLE REPAIR >
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DIAGNOSIS SENSOR UNIT
Removal and Installation
INFOID:0000000004205573
REMOVAL
CAUTION:
• Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least three
minutes.
• Before disconnecting the air bag sensor unit harness connector, be sure to disconnect the harness
connector of each air bag module and pre-tensioner seat belt to prevent air bag deployment by static
electricity.
• Do not use air tools or electric tools for servicing.
• Do not use old bolts after removal; replace with new bolts.
• Do not cause an impact to the diagnosis sensor unit by dropping etc. Replace the diagnosis sensor
unit if it has been dropped or sustained an impact.
• Replace the diagnosis sensor unit of deployed SRS air bag and deployed SRS front seat belt pre-ten-
sioner.
1. Disconnect the negative and positive battery terminals, then wait at least three minutes.
2. Disconnect connector of each air bag module and seat belt pre-tensioner. Refer to
SR-10, "Removal and Installation"
SR-12, "Removal and Installation"
SB-8, "Removal and Installation"
3. Remove the center console. Refer to
IP-18, "Disassembly and Assembly"
.
4. Disconnect the diagnosis sensor unit harness connectors.
5. Remove the bolts, then remove the diagnosis sensor unit.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Be careful not to damage the diagnosis sensor unit harness.
• After the work is completed, make sure no system malfunction is detected by air bag warning lamp.
• In case a malfunction is detected by the air bag warning lamp, reset by the self-diagnosis function
and delete the memory by CONSULT
−lIl.
• If a malfunction is still detected after the above operation, perform self-diagnosis to repair malfunc-
tions. Refer to
ECU DISCRIMINATED NO.
1.
Diagnosis sensor unit harness con-
nector
2.
Diagnosis sensor unit shield
3.
Diagnosis sensor unit
A.
Diagnosis sensor unit bolts
Vehicle front
AWHIA0014GB
SR-18
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DIAGNOSIS SENSOR UNIT
After replacing the diagnosis sensor unit, confirm that the diagnosis sensor unit identification is correct for the
vehicle as equipped. Refer to
SRC-14, "CONSULT-III Function (AIR BAG)"
.
OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT
SR-19
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OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT
Removal and Installation
INFOID:0000000004205574
The occupant classification system control unit, occupant classification system sensor, and sensor mat are an
integral part of the front passenger seat cushion and are replaced as an assembly. Refer to
SR-20
< ON-VEHICLE REPAIR >
COLLISION DIAGNOSIS
COLLISION DIAGNOSIS
For Frontal Collision
INFOID:0000000004205575
Check the SRS components using the following table.
• After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS INSPECTION (FOR FRONTAL COLLISION)
Part
SRS is activated
SRS is NOT activated
Driver air bag module
If the driver air bag
has deployed:
REPLACE
Install with new fas-
teners.
If the driver air bag has NOT been activated:
1.
Remove driver air bag module. Check harness cover and connectors for dam-
age, terminals for deformities, and harness for binding.
2.
Install driver air bag module into the steering wheel to check fit and alignment
with the wheel.
3.
If no damage is found, reinstall with new fasteners.
4.
If damaged—REPLACE. Install driver air bag modules with new fasteners.
Front passenger air
bag module
If the front passenger
air bag has deployed:
REPLACE
Install with new fas-
teners.
If the front passenger air bag has NOT been activated:
1.
Remove front passenger air bag module. Check harness cover and connectors
for damage, terminals for deformities, and harness for binding.
2.
Install front passenger air bag module into the instrument panel to check fit with
the instrument panel.
3.
If no damage is found, reinstall with new fasteners.
4.
If damaged—REPLACE. Install front passenger air bag modules with new fas-
teners.
Crash zone sensor
If any of the front air
bags or seat belt pre-
tensioners* have
been activated:
REPLACE the crash
zone sensor and
bracket with new fas-
teners.
*: Confirm seat belt
pre-tensioner activa-
tion using CONSULT-
III only.
If the front air bags or seat belt pre-tensioners have NOT been activated:
1.
Remove the crash zone sensor. Check harness connectors for damage, termi-
nals for deformities, and harness for binding.
2.
Check for visible signs of damage (dents, cracks, deformation) of the crash zone
sensor and bracket.
3.
Install the crash zone sensor to check fit.
4.
If no damage is found, reinstall with new fasteners.
5.
If damaged—REPLACE the crash zone sensor and bracket with new fasteners.
Seat belt pre-tension-
er assemblies
(All applicable loca-
tions: buckle, reel, lap
outer)
If either the driver or
passenger seat belt
pre-tensioner* has
been activated:
REPLACE all seat
belt pre-tensioner as-
semblies with new
fasteners.
*: Confirm seat belt
pre-tensioner activa-
tion using CONSULT-
III only.
If the pre-tensioners have NOT been activated:
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.
Check seat belt adjuster for damage.
5.
Check for deformities of the center pillar inner.
6.
If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner
assembly.
7.
If no damage is found, reinstall seat belt pre-tensioner assembly.
8.
If damaged—REPLACE. Install the seat belt pre-tensioners with new fasteners.
Diagnosis sensor unit
If any of the SRS com-
ponents have been
activated:
REPLACE the diag-
nosis sensor unit.
Install with new fas-
teners.
If none of the SRS components have been activated:
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 fasteners.
4.
If damaged—REPLACE. Install diagnosis sensor unit with new fasteners.
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