sensor NISSAN TERRANO 2002 Service Repair Manual

IInsert axle shaft with Tool as a guide.
When inserting axle shaft, be careful not to damage oil seal.
ITighten nuts to the specified torque.
:53-63N×m (5.4 - 6.4 kg-m, 39 - 46 ft-lb)
IInstall ABS-sensor.
IMeasure end play of axle shaft.
Axial end play:
0.0 mm (0.0000 in)
YRA006
ERA013
YRA003
REAR AXLE
Installation (Cont'd)
RA-11

RESTRAINT SYSTEM
SECTION
RS
CONTENTS
SEAT BELTS...................................................................2
Precautions ..................................................................2
Front Seat Belt.............................................................4
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)............6
Precautions ..................................................................6
Preparation ..................................................................7
SRS Configuration .......................................................8
Seat Belt Pre-tensioner with Load Limiter...................9
Built-in Type Side Air Bag............................................9
SRS Component Parts Location ...............................10
Maintenance Items ....................................................10
Diagnosis Sensor Unit ............................................... 11
Front Seat Belt Pre-tensioner ....................................12
Side Air Bag (Satellite) Sensor ..................................13
Driver Air Bag Module and Spiral Cable ...................14
Front Passenger Air Bag Module ..............................17Front Side Air Bag Module ........................................18
Disposal of Air Bag Module and Seat Belt Pre-
tensioner ....................................................................20
Trouble Diagnoses Introduction.................................26
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................29
Schematic ..................................................................31
Wiring Diagram - SRS -.............................................32
SRS Operation Check ...............................................36
Trouble Diagnoses with CONSULT-II..................37
Trouble Diagnoses without CONSULT-II.............46
Trouble Diagnoses:²AIR BAG²Warning Lamp
Does Not Turn Off .....................................................54
Trouble Diagnoses:²AIR BAG²Warning Lamp
Does Not Turn On .....................................................56
Collision Diagnosis ....................................................57

Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ªAIR BAGº AND ªSEAT BELT
PRE-TENSIONERº
The 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 R20 is as follows (The composition
varies according to the destination and optional equipment.):
IFor 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.
IFor 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:
ITo 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.
IImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
IDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
Precaution for Seat Belt Service
CAUTION:
IBefore removing the seat belt pre-tensioner assembly, turn the ignition switch off, disconnect both
battery cables and wait at least 3 minutes.
IDo not use electrical test equipment for seat belt pre-tensioner connector.
IAfter replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten-
sioner connector, check the system function. Refer to ªSRS Operation Checkº for details. (RS-36)
IDo not disassemble buckle or seat belt assembly.
IReplace anchor bolts if they are deformed or worn out.
INever oil tongue and buckle.
IIf any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt
assembly.
IIf webbing is cut, frayed, or damaged, replace seat belt assembly.
IWhen replacing seat belt assembly, use a genuine seat belt assembly.
After A Collision
WARNING:
Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the
collision was minor and the belts show no damage and continue to operate properly. Failure to do so
could result in serious personal injury in an accident. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or improper operation is noted. Seat belt pre-tensioner
should be replaced even if the seat belts are not in use during a frontal collision in which the air bags
are deployed.
Replace any seat belt assembly if:
IThe seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
buckles show no damage and continue to operate properly).
IThe seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide, etc.)
IThe seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for dam-
age or distortion and repair as necessary before installing a new seat belt assembly.
IAnchor bolts are deformed or worn out.
SEAT BELTS
RS-2

Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ªAIR BAGº AND ªSEAT BELT
PRE-TENSIONERº
The 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 R20 is as follows (The composition
varies according to the destination and optional equipment.):
IFor 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.
IFor 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:
ITo 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.
IImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
IDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
PRECAUTIONS FOR SRS ªAIR BAGº AND ªSEAT BELT PRE-TENSIONERº SERVICE
IDo not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
IBefore 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.
IDiagnosis sensor unit must always be installed with their arrow marks ª+º 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.
IThe 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.
IHandle 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 (built-in type) standing with stud bolt side setting
bottom.
IConduct self-diagnosis to check entire SRS for proper function after replacing any components.
IAfter air bag inflates, the front instrument panel assembly should be replaced if damaged.
WIRING DIAGRAMS AND TROUBLE DIAGNOSIS
When you read wiring diagrams, refer to the following:
IGI-10, ªHOW TO READ WIRING DIAGRAMSº
IEL-6, ªPOWER SUPPLY ROUTINGº for power distribution circuit
When you perform trouble diagnosis, refer to the following:
IGI-25, ªHOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSISº
IGI-22, ªHOW TO PERFORM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENTº
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-6

COMMERCIAL SERVICE TOOL
Tool name Description
Tamper resistant torx
socket
NT757
Size: T30
SRS Configuration
The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in the ªONº or ªSTARTº
position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module and front passenger air bag module are activated in a frontal
collision but not in a side collision.
SRS configurations which are activated for some collision modes are as follows:
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag moduleqÐÐ
Front passenger air bag moduleqÐÐ
Front LH seat belt pre-tensionerqÐÐ
Front RH seat belt pre-tensionerqÐÐ
Front LH side air bag module ÐqÐ
Front RH side air bag module Ð Ðq
SRS585-D
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Preparation (Cont'd)
RS-8

SRS Component Parts Location
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, 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-36 for details.
IThe ªAIR BAGº warning lamp does not illuminate when the
ignition switch is turned ªONº.
IThe ªAIR BAGº warning lamp does not go off about 7 seconds
after the ignition switch is turned ªONº.
IThe 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
ICheck diagnosis sensor unit and bracket for dents, cracks and
deformities.
ICheck connectors for damage, and terminals for deformities.
2) Air bag module and steering wheel
IRemove air bag module from steering wheel, instrument panel
or seatback. Check harness cover and connectors for damage,
terminals for deformities, and harness for binding.
NRS102
SRS797-A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-10

IInstall driver air bag module to steering wheel to check fit or
alignment with the wheel.
ICheck steering wheel for excessive free play.
IInstall front passenger air bag module to instrument panel to
check fit or alignment with the instrument panel.
IInstall front side air bag module to seatback to check fit and
alignment with the seat.
3) Spiral cable
ICheck spiral cable for dents, cracks, or deformities.
ICheck connectors and protective tape for damage.
ICheck steering wheel for noise, binding or heavy operation.
4) Main harness, body harness, side air bag module sub-harness
ICheck connectors for poor connections, damage, and terminals
for deformities.
ICheck harnesses for binding, chafing or cut.
5) Front seat belt pre-tensioner
ICheck harness cover and connectors for damage, terminals for
deformities, and harness for binding.
ICheck belts for damage and anchors for loose mounting.
ICheck retractor for smooth operation.
IPerform self-diagnosis for seat belt pre-tensioner using ªAIR
BAGº warning lamp or CONSULT-II.
Refer to ªSRS Operation Checkº for details. (RS-36)
6) Side air bag (satellite) sensor
ICheck side air bag (satellite) sensor (including bracket portion)
for dents, cracks or deformities.
ICheck connectors for damage, and terminals for deformities.
CAUTION:
Replace previously used special bolts and ground bolt with
new ones.
Diagnosis Sensor Unit
REMOVAL AND INSTALLATION
CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
IThe 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.
ICheck diagnosis sensor unit for proper installation.
ICheck diagnosis sensor unit to ensure it is free of
deformities, dents, cracks or rust. If they show any visible
signs of damage, replace them with new ones.
ICheck diagnosis sensor unit brackets to ensure they are
free of deformities or rust.
IReplace diagnosis sensor unit if it has been dropped or
sustained an impact.
IAfter replacement of diagnosis sensor unit, perform self-
diagnosis for SRS. Refer to ªSRS Operation Checkº for
details. (RS-36)
1. Disconnect driver, front passenger and front side air bag mod-
ule connectors. Also, disconnect front seat belt pre-tensioner
connector.
2. Remove console box. Refer to BT-22, ªINSTRUMENT PANEL
ASSEMBLYº.
3. Disconnect diagnosis sensor unit connector.
4. Remove ground bolt and also remove special bolts using the
TAMPER RESISTANT TORX (Size T50), from diagnosis sen-
sor unit.
Then remove the diagnosis sensor unit.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Maintenance Items (Cont'd)
RS-11

NOTE:
ITo install, reverse the removal procedure sequence.
Front Seat Belt Pre-tensioner
REMOVAL AND INSTALLATION
CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
ICheck front seat front belt pre-tensioner with load limiter
for proper installation.
IAfter replacement of front seat belt pre-tensioner, check
SRS function and perform self-diagnosis for SRS.
IRefer to ªSRS Operation Checkº for details. (RS-36)
IDo not attempt to disassemble front seat belt pre-tensioner
with load limiter.
IReplace front seat belt pre-tensioner if it has been dropped
or sustained an impact.
IDo not expose front seat belt pre-tensioner to tempera-
tures exceeding 80ÉC (176ÉF).
For removal of front seat belt pre-tensioner, refer to ªFront Seat
Beltº for details. (RS-4)
NOTE:
ITo install, reverse the removal procedure sequence.
YRS071
YRS072
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Diagnosis Sensor Unit (Cont'd)
RS-12

Side Air Bag (Satellite) Sensor
REMOVAL AND INSTALLATION
CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
IDo not use old bolts coated with bonding agent after
removal; replace with new ones.
ICheck side air bag (satellite) sensor for proper installation.
ICheck 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.
IAfter replacement of side air bag (satellite) sensor, check
SRS function and perform self-diagnosis for SRS. Refer to
ªSRS Operation Checkº for details. (RS-36)
IDo not attempt to disassemble side air bag (satellite) sen-
sor.
IReplace side air bag (satellite) sensor if it has been
dropped or sustained an impact.
1. Remove front seat belt pre-tensioner. Refer to ªFront Seat Beltº
for details. (RS-4)
2. Disconnect side air bag (satellite) sensor connector.
3. Remove bolt and nuts from side air bag (satellite) sensor unit.
Then remove the (satellite) sensor.
NOTE:
ITo install, reverse the removal procedure sequence.
YRS077
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-13

INSTALLATION
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 (counterclock-
wise) about 2.5 revolutions from the right end position. Align the
two marks (
).
CAUTION:
IThe spiral cable may snap due to steering operation if the
cable is installed in an improper position.
IAlso, 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 2.5 turns from the neutral position to both the right
and left.
3. Connect spiral cable connector and tighten with screws.
4. Install steering column covers. And make sure the harness do
not get caught between inner steering cover and steering col-
umn.
5. Install steering wheel, aligning with spiral cable pin guides, and
pull spiral cable through.
6. Connect horn connector (or horn/audio connector) and engage
spiral cable with pawls in steering wheel. Move driver air bag
module connector away from steering wheel lower lid opening.
7. Tighten nut.
:30-40N×m (3.1 - 4.1 kg-m, 22 - 30 ft-lb)
8. Position driver air bag module and tighten with new special
bolts.
9. Connect driver air bag module connector and diagnosis sensor
unit connector.
10. Install steering switches and lids.
11. Conduct self-diagnosis to ensure entire SRS operates properly.
(Use CONSULT-II or warning lamp check.)
Before performing self-diagnosis, connect both battery cables.
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 position.
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.
13. Perform self-diagnosis again to check that no malfunction is
detected.
SRS983
NBF004
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Driver Air Bag Module and Spiral Cable
(Cont'd)
RS-16