COLLISION DIAGNOSISSR-7
< BASIC INSPECTION >
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For Side and Rollover CollisionINFOID:0000000009463068
FOR SIDE AND ROLLOVER COLLISION: When SRS is activated in a collision
CAUTION:
Due to varying models and option levels, not all parts listed in the chart below apply to all vehicles.
WORK PROCEDURE
1. Before performing any of the following steps, ensur e that all vehicle body and structural repairs have been
completed.
2. Replace the following components:
- Front seat back assembly (on the side on which side air bag is activated).
- Door finisher (on the side on which door-mounted curtain air bag is activated).
- Pop-up roll bar assemblies and pop-up roll bar covers.
Seat belt pre-tensioner assem-
blies
(All applicable locations: buckle,
retractor, lap outer) 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 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.
Steering wheel 1. Visually check steering wheel for deformities. 2. Check harness (built into steering wheel) and connectors for damage, and terminals for defor-mities.
3. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall.
6. If damaged — REPLACE.
Spiral cable If the driver front air bag has not deployed: 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.
5. If damaged — REPLACE.
Occupant classification system
(Passenger seat) 1. Remove passenger seat assembly.
2. Check control unit case for dents, cracks of deformities.
3. Check connectors and pressure sensor tube for damage, and terminals for deformities.
4. Check seat frame and cushion pan for dents or deformities.
5. If no damage is found, reinstall seat with new fasteners.
6. If damaged — REPLACE seat cushion assembly with new fasteners.
7. Perform zero point reset function after front passenger seat is installed in the vehicle and all
bolts are tightened to specification. Refer to SRC-42, "ZERO POINT RESET : Special Repair
Requirement".
Harness and connectors 1. 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. If damaged ——REPLACE the damaged harness. Do not attempt to repair, splice or modify any SRS harness.
Instrument panel assembly If the passenger front air bag has NOT deployed: 1. Visually check instrument panel for damage.
2. If no damage is found, reinstall the instrument panel assembly.
3. If damaged—REPLACE the instrument panel assembly.
Part Inspection
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DRIVER AIR BAG MODULESR-11
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
DRIVER AIR BAG MODULE
Exploded ViewINFOID:0000000009463069
Removal and InstallationINFOID:0000000009463070
WARNING:
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery terminals and wait at
least three minutes.
• Always work from the side of air bag module. Do not work in front of it.
• Do not use air tools or electric tools for servicing.
REMOVAL
1. Disconnect both the negative and positive battery terminal s, then wait at least three minutes. Refer to PG-
73, "Removal and Installation (Battery)".
1. Steering wheel 2. Driver air bag module
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SR-12
< REMOVAL AND INSTALLATION >
DRIVER AIR BAG MODULE
2. Locate retaining spring access hole in steering wheel rear fin-isher (1) and insert ( ) a 5.0mm (0.197 in) diameter suitable
tool.
3. Make sure tool contacts retaining spring (A) as shown. While pushing suitable tool inward ( ), push in top of driver air bag
module at location (D) to release retaining spring (A) and pull to
separate from steering wheel. This action will release the retain-
ing spring from the steering wheel. Repeat action with retaining
spring (B) while pushing at location (C).
NOTE:
Back side of driver air bag module is shown for clarity.
4. Raise the driver air bag module away from the steering wheel and disconnect the air bag harness connectors (A) and the horn
terminal connector (B). Then remove the wire harness from the
hook ( ).
NOTE:
Dual stage driver air bag module shown.
CAUTION:
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DRIVER AIR BAG MODULESR-13
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• For removing/installing the driver air bag module harness
connector, insert a thin screwdriver wrapped in tape into
the notch, then lift the lock and remove the harness con-
nector as shown.
• Install the harness connector with the lock raised, and push the lock into the connector as shown.
• After installing the connector, check that the lock is pushed in securely.
5. Remove the driver air bag module. CAUTION:
• Always place the driver air ba g module with pad side fac-
ing upward.
: Upward
• Replace the driver air bag module if it has been dropped or sustained an impact.
• Do not strike the driver air bag module.
• Do not insert any foreign objects (screwdri ver, etc.) into the driver air bag module.
• Do not disassemble the driver air bag module.
• Do not expose the driver air ba g module to temperatures exceeding 90 ° C (194 °F).
• Do not allow oil, grease, detergent or water to come in contact with the driver air bag module.
INSTALLATION
1. Place the driver air bag module (1) near the steering wheel and
connect the horn terminal connec tor (B). Then route the wire
harness through the hook ( ) of the driver air bag module (1)
as shown.
2. Connect the driver air bag module harness connectors (A) and route the wire harness through the hook ( ) of the driver air bag
module (1) as shown.
NOTE:
• Make sure the driver air bag module has three horn springs (2, 3) and they are securely seated. The lower spring (3) is more
stiff than the two upper springs (2).
• Dual stage driver air bag module shown.
CAUTION:
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< REMOVAL AND INSTALLATION >
DRIVER AIR BAG MODULE
• For removing/installing the driver air bag module harnessconnector, insert a thin screwdriver wrapped in tape into
the notch, then lift the lock and remove the harness con-
nector as shown.
• Install the harness connector with the lock raised, and push the lock into the connector as shown.
• After installing the conn ector, check that the lock is
pushed in securely.
3. Insert the driver air bag module onto the st eering wheel and push firmly to snap into place.
4. Check the horn function by pressing at the three locations (1, 2, 3) as shown.
CAUTION:
• Be careful not to damage or pinch the harness while installing.
• After the work is completed, make sure no syst em 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 func-
tion and delete the memory using CONSULT.
• If a malfunction is still detected after the abo ve operation, perform self-diagnosis to repair mal-
functions. Refer to SRC-17, "SRS Final Check"
.
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SPIRAL CABLESR-15
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SPIRAL CABLE
Removal and InstallationINFOID:0000000009463071
WARNING:
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery terminals and wait at
least three minutes.
• Do not use air tools or electric tools for servicing.
REMOVAL
1. Disconnect both the negative and positive battery terminal s, then wait at least three minutes. Refer to PG-
73, "Removal and Installation (Battery)".
2. Remove the steering wheel. Refer to ST-31, "Removal and Installation"
.
3. Remove the steering column lower cover and position steering column upper cover aside. Refer to IP-17,
"Removal and Installation".
4. Remove the paddle shifter (if equipped). Refer to TM-382, "Removal and Installation"
.
5. Disconnect the harness connector (A) from the spiral cable and the harness connector (B) from the steering angle sensor.
6. Remove two screws ( ), then remove the spiral cable and steering angle sensor assembly (1).
CAUTION:
Do not turn the spiral cable quickly or beyond the limit
number of turns (approximately 2.5 turns from the neutral
position), this may cause the cable to snap.
7. Separate the spiral cable (1) from the steering angle sensor (2) by removing two screws (A) and releasing three pawls (B).
CAUTION:
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< REMOVAL AND INSTALLATION >
SPIRAL CABLE
• Do not strike or drop the spiral cable.
• Replace the spiral cable if it has been dropped or sus-
tained an impact.
• Do not disassemble the spiral cable.
• Do not allow oil, grease, detergent or water to come in contact with the spiral cable.
INSTALLATION
Installation is in the reverse order of removal.
• The turn signal lever must be in the neutral position for spiral cable installation.
• Set the spiral cable (1) neutral position by carefully turning the spi-
ral cable (1) clockwise to the end position. Turn the spiral cable (1)
counterclockwise 2.5 turns stopping when the locating pin (C) is at
the top most position, the triangl es (A) are pointing at each other
as shown and the clear window (B) appears white.
NOTE:
If a service part is installed, the neutral position is already set with
a stopper clip in place and should not be adjusted after the stopper
clip is removed. Make sure the stopper is removed before installing
the steering wheel (2).
• During steering wheel (2) installation, make sure the locating pin hole (D) is aligned with the locating pin (C) of the spiral cable (1).
• Perform the neutral position adjustment for the steering angle sen-
sor. Refer to BRC-58, "Work Procedure"
.
CAUTION:
• The spiral cable may snap during steering operation if the spiral cable is installed in an improper
position.
• Do not overturn the spiral cable or go beyond the maximum number of turns allowed. This will cause
the cable to snap.
• The turn signal lever must be in the ne utral position for spiral cable installation.
• Do not apply lubricant to the spiral cable.
• Do not allow oil, grease, detergent or water to come in contact with the spiral cable.
• After the work is completed, check that no system malfunction is detected by air bag warning lamp.
• If a malfunction is detected by the air bag warnin g lamp after repair or replacement of the malfunc-
tioning parts, perform the SRS final check. Refer to SRC-17, "SRS Final Check"
.
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SRC-4
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
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The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 performed by
an authorized NISS AN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three minutes before performing any service.
Precaution for SRS "AIR BAG" and "S EAT BELT PRE-TENSIONER" Service
INFOID:0000000009460703
• Do not use electrical test equipment to check SRS ci rcuits 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 SR S connectors or wires until at least 3 minutes have
passed.
• The air bag diagnosis sensor unit must always be installed with the arrow mark “ ⇐” pointing toward the front
of the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or rust
before installation 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 seat mounted front side air bag m odule standing with the stud bolt side facing down.
• 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.
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