1999 NISSAN PRIMERA Electronic Repair Manual

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Page 2193 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Description
The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in ªONº or ªSTARTº
position.
The collision modes for which supplemental restraint systems are ac

Page 2194 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Built-in Type Side Air Bag
Front side air bag is built-in type.
The front seat back with built-in type side air bag has the labels
as shown on the left figure.
SRS Component Parts Location
NRS059
.Fro

Page 2195 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Maintenance Items
CAUTION:
Do not use electrical test equipment to check SRS circuit.
1. Check operation of ªAIR BAGº warning lamp.
After turning ignition key to ªONº position, the ªAIR BAGº
war

Maintenance Items
CAUTION:
Do not use electrical test equipment to check SRS circuit.
1. Check operation of ªAIR BAGº warning lamp.
After turning ignition key to ªONº position, the ªAIR BAGº
warning lamp illuminates. The ªAIR BAGº warning lamp will
go off after about 7 seconds if no malfunction is detected.
If any of the following warning lamp conditions occur, imme-
diately check the air bag system. Refer to ªSRS-Operation
Checkº for details. (RS-37)
lThe ªAIR BAGº warning lamp does not come on when the
ignition switch is turned ªONº.
lThe ªAIR BAGº warning lamp does not go off about 7 sec-
onds after the ignition switch is turned ªONº.
lThe ªAIR BAGº warning lamp blinks about 7 seconds after
the ignition switch is turned ªONº.
2. Visually check SRS components.
(1) Diagnosis sensor unit
lCheck diagnosis sensor unit and bracket for dents, cracks or
deformities.
lCheck connectors for damage, and terminals for deformities.
(2) Air bag module and steering wheel
lRemove air bag module from steering wheel, instrument
panel or seat back. Check harness cover and connectors for
damage, terminals for deformities, and harness for binding.
lInstall driver's air bag module to steering wheel to check fit
or alignment with the wheel.
lCheck steering wheel for excessive free play.
lInstall passenger's air bag module to instrument panel to
check fit or alignment with the instrument panel.
lInstall side air bag module to seatback to check fit and align-
ment with the seat.
(3) Spiral cable
lCheck spiral cable for dents, cracks, or deformities.
lCheck connectors and protective tape for damage.
lCheck steering wheel for noise, binding or heavy operation.
(4) Main harness, body harness and air bag harness
lCheck connectors for poor connections, damage, and termi-
nals for deformities.
lCheck harnesses for binding, chafing or cuts.
(5) Seat belt pre-tensioner
lCheck harness cover and connectors for damage, terminals
for deformities, and harness for binding.
lCheck belts for damage and anchors for loose mounting.
lCheck retractor for smooth operation.
lPerform self-diagnosis for seat belt pre-tensioner using ªAIR
BAGº warning lamp or CONSULT-II. Refer to ªSRS Operation
Checkº for details. (RS-37)
(6) Side airbag (Satellite) sensor
lCheck Side airbag (Satellite) sensor (including bracket por-
tion) for dents, cracks or deformities.
lCheck connectors for damage, and terminals for deformities.
SRS797-A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-12

Page 2196 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual CAUTION:
Replace previously used special bolts, ground bolt and nuts
coated with bonding agent and also the anchor bolt with
new ones.
Removal and Installation Ð Diagnosis
Sensor Unit, Seat Belt Pre-

CAUTION:
Replace previously used special bolts, ground bolt and nuts
coated with bonding agent and also the anchor bolt with
new ones.
Removal and Installation Ð Diagnosis
Sensor Unit, Seat Belt Pre-tensioner and
Satellite Sensor
CAUTION:
lBefore servicing SRS, turn the ignition switch ªOFFº, disconnect both battery cables and wait at
least 3 minutes.
lThe special bolts are coated with bonding agent while the other bolt is for ground. Do not use
old bolts after removal; replace with new ones.
lCheck diagnosis sensor unit, seat belt pre-tensioner and satellite sensor for proper installation.
lCheck diagnosis sensor unit and satellite sensor to ensure they are free of deformities, dents,
cracks or rust. If it shows any visible signs of damage, replace them with new ones.
lCheck diagnosis sensor unit brackets to ensure they are free of deformities and rust.
lAfter replacement of diagnosis sensor unit, seat belt pre-tensioner and satellite sensor check
SRS function and perform self-diagnosis for SRS. Refer to ªSRS Operation Checkº for details.
(RS-37)
lDo not attempt to disassemble diagosis sensor unit,seat belt pre-tensioner and satellite sensor
lReplace diagnosis sensor unit, seat belt pre-tensioner and satellite sensor if it has been dropped
or sustained an impact.
lDo not expose seat belt pre-tensioner to temperatures exceeding 80ÉC (176ÉF).
REMOVAL OF DIAGNOSIS SENSOR UNIT
1. Disconnect driver's, passenger's- and side air bag module
connectors. Also, disconnect seat belt pre-tensioner connec-
tor.
2. Remove lower instrument center panel. Refer to ªINSTRU-
MENT PANELº in BT section.
3. Disconnect diagnosis sensor unit connector.
4. Remove ground bolt and the special bolts by using the
TAMPER RESISTANT TORX (Size T50), from diagnosis sen-
sor unit.
Then remove the diagnosis sensor unit.
NOTE:
lTo install, reverse the removal procedure sequence.
lDiagnosis sensor unit must always be installed with
their arrow marks ª
Sº pointing towards the front of the
vehicle for proper installation.
REMOVAL OF SEAT BELT PRE-TENSIONER
For removal of seat belt pre-tensioner, refer to ªFront Seat Beltº
for details. (RS-3)
NOTE:
lTo install, reverse the removal procedure sequence.
NRS061
Diagnosis sensor unit
.Forward mark
Ground
bolt
FRONTSpecial bolt15-25N´m
(1.5 - 2.5 kg-m, 11 - 18 ft-lb)
NRS062
.5.1 - 6.3 N´m
(0.52 - 0.64 kg-m,
45 - 56 in-lb)
.Seat belt
pre-tensioner
.Connector.Anchor bolt43-55N´m
(4.4 - 5.6 kg-m,
32 - 41 ft-lb)
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-13

Page 2197 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual REMOVAL SATELLITE SENSOR
1. Remove seat belt pre-tensioner. Refer to ªFront Seat Beltº for
details. (RS-3)
2. Disconnect satellite sensor connector.
3. Remove bolt and nuts from satellite sensor uni

Page 2198 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual CAUTION:
lBefore servicing SRS, turn the ignition switch ªOFFº,
disconnect both battery cables and wait for at least 3
minutes.
lAlways work from the side of air bag module.
1. Remove lower lid from

Page 2199 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual 7. Disconnect connector and remove the four screws. The spi-
ral cable can then be removed.
CAUTION:
lDo not attempt to disassemble spiral cable.
lDo not apply lubricant to the spiral cable.
Installat

7. Disconnect connector and remove the four screws. The spi-
ral cable can then be removed.
CAUTION:
lDo not attempt to disassemble spiral cable.
lDo not apply lubricant to the spiral cable.
Installation Ð Air Bag Module and Spiral
Cable
1. Set the front wheels in the straight-ahead position.
2. Make sure that the spiral cable is in the neutral position. The
neutral position is detected by turning left (clock wise) about
3.5 revolutions from the right end position. Align the two
marks (
) or make sure the white indicator is visible in the
upper part of the indicator window, with the cable pointed
down wards.
CAUTION:
lThe spiral cable may snap during steering operation if
the cable is installed incorrectly.
lAlso, with the steering linkage disconnected, the cable
may snap by turning the steering wheel beyond the lim-
ited number of turns.
(The spiral cable can be turned up to 3.5 turns from the
neutral position to both the right and left.)
3. Connect spiral cable connector and tighten with screws.
Install steering column cover.
4. Install steering wheel setting spiral cable pin guides, and pull
spiral cable through.
5. Connect horn connector and engage spiral cable with pawls
in steering wheel. Move other connectors away from steer-
ing wheel lower lid opener.
6. Tighten nut.
: 29 - 39 N´m (3.0 - 4.0 kg-m, 22 - 29 ft-lb)
7. Position the driver's air bag module and tighten with new
special bolts.
lAlways service the air bag module from the side.
8. Connect other connectors.
9. Install all lids and steering switch (where fitted).
10. Connect both battery cables.
11. Conduct self-diagnosis to ensure entire SRS operates prop-
erly. (Use CONSULT-II or warning lamp check.)
12. Turn steering wheel to the left end and then to the right end
fully to make sure that spiral cable is set in the neutral posi-
tion.
SRS384 Unlock
LockConnector
NRS121
Neutral
positionRight end
Indicator not
visible
Indicator win-
dow
Indicator is vis-
ible
Indicator
window
SRS076
SBF812EA Special bolt
7.8 - 13.7 N´m
(0.8 - 1.4 kg-m,
57 - 99 ft-lb)
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Removal Ð Air Bag Module and Spiral Cable
(Cont'd)
RS-16

Page 2200 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual If air bag warning lamp blinks or stays ON (at the user mode),
it shows the spiral cable may be snapped due to its improper
position. Perform self-diagnosis again (use CONSULT-II or
warning lamp). If

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