warning NISSAN ALMERA 2001 Service Manual

Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ªAIR BAGº AND ªSEAT BELT
PRE-TENSIONERº
NJRS0006The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS composition which is available to NISSAN MODEL N16 is as follows (The composition
varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
WARNING:
+To 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 dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
+Do 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 ªAIR BAGº AND ªSEAT BELT PRE-TENSIONERº SERVICENJRS0007+Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
+Before servicing the SRS, turn ignition switch ªOFFº, disconnect both battery cables and wait at least 3
minutes.
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 SRS connectors or wires until at least 3 minutes
have passed.
+Diagnosis sensor unit must always be installed with their arrow marks ªÜº pointing towards the front of
the vehicle for proper operation. Also check 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 place front side air bag module standing with stud bolt side setting bottom.
+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.
WIRING DIAGRAMS AND TROUBLE DIAGNOSISNJRS0008When you read wiring diagrams, refer to the following:
+GI-11, ªHOW TO READ WIRING DIAGRAMSº
+EL-10, ªPOWER SUPPLY ROUTINGº for power distribution circuit
When you perform trouble diagnosis, refer to the following:
+GI-32, ªHOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSESº
+GI-21, ªHOW TO PERFORM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENTº
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Precautions
RS-20

SRS797-A
Maintenance ItemsNJRS0012CAUTION:
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, 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 fol-
lowing ªAIR BAGº warning lamp conditions occur, immediately
check the air bag system. Refer to RS-59 for details.
+The ªAIR BAGº warning lamp does not illuminate when the
ignition switch is turned ªONº.
+The ªAIR BAGº warning lamp does not go off about 7 seconds
after the ignition switch is turned ªONº.
+The ªAIR BAGº warning lamp blinks after about 7 seconds after
the ignition switch is turned ªONº.
2. Visually check SRS components.
1) Diagnosis sensor unit
+Check diagnosis sensor unit and bracket for dents, cracks and
deformities.
+Check connectors for damage, and terminals for deformities.
2) Air bag module and steering wheel
+Remove air bag module from steering wheel, instrument panel
or seatback. Check harness cover and connectors for damage,
terminals for deformities, and harness for binding.
+Install driver air bag module to steering wheel to check fit or
alignment with the wheel.
+Check steering wheel for excessive free play.
+Install front passenger air bag module to instrument panel to
check fit or alignment with the instrument panel.
+Install front side air bag module to seatback to check fit and
alignment with the seat.
3) Spiral cable
+Check spiral cable for dents, cracks, or deformities.
+Check connectors and protective tape for damage.
+Check steering wheel for noise, binding or heavy operation.
4) Main harness, body harness, side air bag module sub-harness
+Check connectors for poor connections, damage, and termi-
nals for deformities.
+Check harnesses for binding, chafing or cut.
5) Front seat belt pre-tensioner
+Check harness cover and connectors for damage, terminals
for deformities, and harness for binding.
+Check belts for damage and anchors for loose mounting.
+Check retractor for smooth operation.
+Perform self-diagnosis for seat belt pre-tensioner using ªAIR
BAGº warning lamp or CONSULT-II.
Refer to ªSRS Operation Checkº for details. (RS-59)
6) Side air bag (satellite) sensor
+Check side air bag (satellite) sensor (including bracket portion)
for dents, cracks or deformities.
+Check connectors for damage, and terminals for deformities.
CAUTION:
Replace previously used special bolts, hex bolts and ground
bolt with new ones.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Maintenance Items
RS-25

SRS822-A
SRS887
INSTALLATIONNJRS00171. 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 about 3.5 revo-
lutions from the right end position. Align the two marks (
).
CAUTION:
+The spiral cable may snap due to steering operation if the
cable is installed in an improper position.
+Also, with the steering linkage disconnected, the cable
may snap by turning the steering wheel beyond the limited
number of turns. The spiral cable can be turned up to
about 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, aligning with spiral cable pin guides, and
pull spiral cable through.
5. Connect horn/audio connector and engage spiral cable with
pawls in steering wheel. Move driver air bag module connec-
tor away from steering wheel lower lid opening.
6. Tighten nut.
: 29.4 - 39.2 N´m (3.0 - 4.0 kg-m, 22 - 28 ft-lb)
SBF812EI
7. Position driver air bag module and tighten with new special
bolts.
8. Connect driver air bag module connector.
9. Install steering switches and lids.
10. Conduct self-diagnosis to ensure entire SRS operates prop-
erly. (Use CONSULT-II or warning lamp check.)
Before performing self-diagnosis, connect both battery cables.
11. 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.
If ªAIR BAGº warning lamp blinks or stays ON (at the user
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Driver Air Bag Module and Spiral Cable (Cont'd)
RS-31

mode), it shows the spiral cable may be snapped due to its
improper position. Perform self-diagnosis again (use CON-
SULT-II or warning lamp). If a malfunction is detected, replace
the spiral cable with a new one.
12. Perform self-diagnosis again to check that no malfunction is
detected.
REMOVAL AND INSTALLATION/WITH 3-SPOKE STEERING WHEELNJRS0052
SRS616-A
SRS617-A
REMOVALNJRS0053CAUTION:
+Before servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
+Always work from the side of driver air bag module.
1. Remove side lid from steering wheel, and disconnect driver air
bag module connector.
2. Using the TAMPER RESISTANT TORX (Size T30), remove left
and right special bolts.
SRS618
3. Remove driver air bag module connector by pushing tab.
Driver air bag module can then be removed.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Driver Air Bag Module and Spiral Cable (Cont'd)
RS-32

SRS822
INSTALLATIONNJRS00541. 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 about 3.5 revo-
lutions from the right end position. Align the two marks (
).
CAUTION:
+The spiral cable may snap due to steering operation if the
cable is installed in an improper position.
+Also, with the steering linkage disconnected, the cable
may snap by turning the steering wheel beyond the limited
number of turns. The spiral cable can be turned left about
3.5 turns from the right end position.
3. Connect and lock spiral cable connector and tighten with
screws. Install steering column cover.
SRS624-A
4. Install steering wheel setting spiral cable pin guide, and pull
spiral cable through. And set horn connector harness and
driver air bag module connector harness to harness hook.
5. Connect horn connector and engage spiral cable with pawls in
steering wheel.
6. Tighten nut.
: 29.4 - 39.2 N´m (3.0 - 4.0 kg-m, 22 - 28 ft-lb)
SRS617-A
7. Position driver air bag module and install driver air bag mod-
ule connector, then tighten driver air bag module with new
special bolts.
8. Connect driver air bag module connector.
9. Install all lids.
10. Conduct self-diagnosis to ensure entire SRS operates prop-
erly. (Use CONSULT-II or warning lamp check.)
Before performing self-diagnosis, connect both battery cables.
11. 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.
If ªAIR BAGº 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 CON-
SULT-II or warning lamp). If a malfunction is detected, replace
the spiral cable with a new one.
12. Perform self-diagnosis again to make sure that no malfunction
is detected.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Driver Air Bag Module and Spiral Cable (Cont'd)
RS-34

SBF814E
+Replace front passenger air bag module if it has been
dropped or sustained an impact.
+Do not expose the front passenger air bag module to tem-
peratures exceeding 90ÉC (194ÉF).
+Do not allow oil, grease or water to come in contact with
the front passenger air bag module.
+After front passenger air bag inflates, the front instrument
panel assembly should be replaced if damaged.
SRS825
SRS947
INSTALLATIONNJRS0019CAUTION:
+Always work from the side of or under front passenger air
bag module.
1. Install front passenger air bag module on steering member and
secure with new special bolts.
+Ensure harness is not caught between rear of front passenger
air bag module and steering member.
2. Install grove box cover.
3. Install glove box assembly. (Glove box is open.)
SRS827
4. Connect front passenger air bag module connector to air bag
harness connector.
5. Close the connector cover.
6. Close the glove box.
7. Connect both battery cable.
8. Conduct self-diagnosis to ensure entire SRS operates prop-
erly. (Use CONSULT-II or warning lamp check.)
SRS682
Front Side Air Bag Module/4-door Sedan
REMOVALNJRS0020CAUTION:
+Before servicing SRS, turn the ignition switch OFF, dis-
connect both battery cables and wait at least 3 minutes.
+Always work from the rear of the front side air bag mod-
ule.
1. Remove seatback board.
+When using a clip removal tool to remove the seatback
board, take care not to damage the harness for air bag.
2. Disconnect front side air bag module connector by sliding tab.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Passenger Air Bag Module (Cont'd)
RS-36

SRS826
3. Install the seatback trim. Refer to BT-56, ªFront Seatº.
4. Secure the inner cloth which covers the front side air bag
module with nuts.
SRS725
5. Connect front side air bag module connector.
6. Install seat back board with new clips.
7. Connect both battery cables.
8. Go to ªSRS Operation Checkº, RS-59 and perform self-diag-
nosis to ensure entire SRS operates properly. (Use CON-
SULT-II or ªAIR BAGº warning lamp.)
SRS866
Front Side Air Bag Module/Hatchback
REMOVALNJRS0059CAUTION:
+Before servicing SRS, turn the ignition switch OFF, dis-
connect both battery cables and wait at least 3 minutes.
+Always work from the rear of the front side air bag mod-
ule.
1. Open the seatback zipper.
2. Disconnect front side air bag module connector.
SRS867
3. Pull up the seatback trim.
4. Remove the nuts coated with bonding agent securing front
side air bag and the inner cloth with seatback frame.
SRS868
5. Remove inner cloth.
6. Remove front side air bag connector. Front side air bag mod-
ule can then be removed.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Side Air Bag Module/4-door Sedan (Cont'd)
RS-38

SRS869
CAUTION:
+Always place the front side air bag module standing with
the stud bolt side setting bottom.
+Do not attempt to disassemble front side air bag module.
+Do not use old nuts after removal; replace with new nuts.
+Do not insert any foreign objects (screwdriver, etc.) into
front side air bag module connector.
SBF814E
+Replace front side air bag module if it has been dropped
or sustained an impact.
+Do not expose the front side air bag module to tempera-
tures exceeding 90ÉC (194ÉF).
+Do not allow oil, grease or water to come in contact with
the front side air bag module.
+After front side air bag inflates, all parts of front seatback
(including front seatback frame) should be replaced.
SRS885
INSTALLATIONNJRS00601. Install front side air bag module on seatback frame with new
nuts.
2. Install front side air bag connector.
SRS867
3. Install the seatback trim. Refer to BT-56, ªFront Seatº.
4. Secure the inner cloth which covers the front side air bag
module with nuts.
SRS870
5. Connect front side air bag module connector.
6. Close the seatback zipper.
7. Connect both battery cables.
8. Go to ªSRS Operation Checkº, RS-59 and perform self-diag-
nosis to ensure entire SRS operates properly. (Use CON-
SULT-II or ªAIR BAGº warning lamp.)
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Side Air Bag Module/Hatchback (Cont'd)
RS-39

Trouble Diagnoses IntroductionNJRS0043CAUTION:
+Do 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.
+Do not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged,
replace it with a new one.
+Keep ground portion clean.
DIAGNOSIS FUNCTIONNJRS0043S01The SRS self-diagnosis results can be read by using ªAIR BAGº warning lamp and/or CONSULT-II. The read-
ing of these results is accomplished using one of two modes Ð ªUser modeº and ªDiagnosis modeº.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system
malfunction through the operation of the ªAIR BAGº warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the ªAIR BAGº warning lamp and CONSULT-II are as follows:
User mode Diagnosis mode Display type
ªAIR BAGº warning lamp X X ON-OFF operation
CONSULT-II Ð X Monitoring
NOTE:
Seat belt pre-tensioner malfunction is indicated by ªAIR BAGº warning lamp.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses Introduction
RS-47

DIAGNOSIS MODE FOR CONSULT-II=NJRS0043S02+ªSELF-DIAG [CURRENT]º
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.
+ªSELF-DIAG [PAST]º
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.
+ªTROUBLE DIAG RECORDº
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be displayed
on the CONSULT-II screen.
+ªECU DISCRIMINATED NO.º
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 cor-
rect unit can be checked by confirming this classification number on the CONSULT-II screen.
For NISSAN MODEL N16, the diagnosis sensor unit classification numbers are as follows:
DESTINATION MODEL ECU DISCRIMINATED NO.
Europe4-DOOR SEDANModels with single air bag and seat belt pre-
tensionerA50E
Models with dual air bags and seat belt pre-
tensionerA50F
Models with dual air bags, side air bag and
seat belt pre-tensionerA510
3-DOOR HATCHBACKModels with single air bag and seat belt pre-
tensionerA917
Models with dual air bags and seat belt pre-
tensionerA904
Models with dual air bags, side air bag and
seat belt pre-tensionerA905
5-DOOR HATCHBACKModels with single air bag and seat belt pre-
tensionerA917
Models with dual air bags and seat belt pre-
tensionerA904
Models with dual air bags, side air bag and
seat belt pre-tensionerA918
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses Introduction (Cont'd)
RS-48