sensor NISSAN TERRANO 2002 Service Repair Manual

More than two parts
groups are out of order.
(q
d: 9 flashes)Flash pattern
YRS073
qathroughqdare repeated.
q
dÐ Nine flashes indicate
malfunctioning more than
two parts groups.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace spiral cable and air bag module.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The front RH side air bag
module circuit is malfunc-
tioning.
(q
f: 1 flash)Flash pattern
SRS338
qathroughqfare repeated.
q
fÐ One flash indicates
malfunctioning front RH
side air bag module circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace front RH side air bag module.
(Before disposal, it must be deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The front LH side air bag
module circuit is malfunc-
tioning.
(q
f: 2 flashes)Flash pattern
SRS337
qathroughqfare repeated.
q
fÐ Two flashes indicate
malfunctioning front LH
side air bag module circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace front LH side air bag module.
(Before disposal, it must be deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-50

The RH side air bag (sat-
ellite) sensor is malfunc-
tioning.
(q
f: 3 flashes)Flash pattern
SRS340
qathroughqfare repeated.
q
fÐ Three flashes indi-
cate malfunctioning RH
side air bag (satellite) sen-
sor circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the RH side air bag (satellite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The LH side air bag (satel-
lite) sensor is malfunction-
ing.
(q
f: 4 flashes)Flash pattern
SRS339-A
qathroughqfare repeated.
q
fÐ Four flashes indicate
malfunctioning LH side air
bag (satellite) sensor cir-
cuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the LH side air bag (satellite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
* Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is elimi-
nated using the air bag warning lamp or CONSULT-II each time repair is finished. If malfunction is still observed, pro-
ceed to the next step. When malfunction is eliminated, further repair work is not required.
DIAGNOSTIC PROCEDURE 7
Final checking after repairing SRS by using ªAIR BAGº warn-
ing lamp Ð Diagnosis mode and User mode
1. After repairing SRS connect both battery cables.
2. Open driver's door.
3. Turn ignition switch from ªOFFº to ªONº.
4. ªAIR BAGº warning lamp operates in Diagnosis mode as fol-
lows:
SRS800
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-51

No. ªAIR BAGº warning lamp flash pattern Ð Diagnosis mode ÐSRS condi-
tion
1
SRS333
qathroughqbare repeated. No malfunc-
tion is
detected or
repair is
completed.
No further
action is
necessary.
2
SRS341
qathroughqdare repeated.
q
bÐ Driver and front passen-
ger air bag and front seat
belt pre-tensioner marker
(For identifying driver air bag,
front passenger air bag
and/or front seat belt pre-
tensioners malfunctioning)
q
dÐ Indicates malfunctioning
part. The number of flashes
varies with malfunctioning
part (0.5 sec. ON and 0.5
sec. OFF is counted as one
flash.)The system
is malfunc-
tioning and
needs to be
repaired.
3
SRS342-A
qathroughqfare repeated.
q
b,qc,qdÐ Front side air bag
marker (For identifying front
side air bag malfunctioning)
q
fÐ Indicates malfunctioning
part. The number of flashes
varies with malfunctioning
part (0.5 sec. ON and 0.5
sec. OFF is counted as one
flash.)
NOTE:
When diagnosis sensor unit is replaced with new one, ªAIR
BAGº warning lamp will operate in User mode. Checking ªAIR
BAGº warning lamp operation in Diagnosis mode is not
required. Go to step 6.
5. If ªAIR BAGº warning lamp operates as shown in No. 1 in chart
above, turn ignition switch ªOFFº to reset from Diagnosis mode
to User mode and to erase the memory of the malfunction.
Then go to step 6.
If ªAIR BAGº warning lamp operates as shown in No. 2 or No.
3 in chart above, the malfunctioning part is not repaired
completely, or another malfunctioning part is detected. Go to
DIAGNOSTIC PROCEDURE 6, page RS-46, and repair mal-
functioning part completely.
6. Turn ignition switch ªONº. ªAIR BAGº warning lamp operates in
User mode. Compare ªAIR BAGº warning lamp operation to the
chart on the next page.
NOTE:
When a malfunction is detected, switch from Diagnosis mode
to user mode by turning the ignition switch as follows:
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-52

1) Turn ignition switch ªONº.
2) After ªAIR BAGº warning lamp lights for 7 seconds, turn ignition
switch ªOFFº within 1 second.
3) Wait more than 3 seconds.
4) Repeat steps 1 to 3 three times.
5) Turn ignition switch ªONº.
SRS is now in User mode.
ªAIR BAGº warning lamp operation Ð User mode Ð SRS condition Reference item
MRS095A
No malfunction is detected.
No further action is neces-
sary.Ð
MRS096A
The system is malfunction-
ing and needs to be repaired
as indicated.Go to DIAGNOSTIC PRO-
CEDURE 6 (RS-46).
MRS097A
Air bag is deployed.
Seat belt pre-tensioner is
deployed.Go to COLLISION DIAGNO-
SIS (RS-57).
Air bag fuse, diagnosis sen-
sor unit or harness is mal-
functioning and needs to be
repaired.Go to DIAGNOSTIC PRO-
CEDURE 9 (RS-54).
MRS098A
One of the following has
occurred and needs to be
repaired.
IMeter fuse is blown.
IªAIR BAGº warning lamp
circuit has open or short.
IDiagnosis sensor unit is
malfunctioning.Go to DIAGNOSTIC PRO-
CEDURE 10 (RS-56).
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-53

4 CHECK DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch ªSTARTº.
IIs ªAIR BAGº displayed on CONSULT-II?
C2SSE01
YesorNo
Ye sEGO TO 5.
NoEVisually check the wiring harness connection of diagnosis sensor unit. If the harness connection check result is
OK, replace diagnosis sensor unit.
5 CHECK HARNESS CONNECTION
Is harness connection between warning lamp and diagnosis sensor unit OK?
OK or NG
OKEReplace diagnosis sensor unit.
NGEConnect ªAIR BAGº warning lamp and diagnosis sensor unit connector properly. If ªAIR BAGº warning lamp still
does not go off, replace harness.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses: ªAIR BAGº Warning Lamp
Does Not Turn Off (Cont'd)
RS-55

Trouble Diagnoses: ªAIR BAGº Warning Lamp
Does Not Turn On
DIAGNOSTIC PROCEDURE 10
1 CHECK ªMETERº FUSE
Is meter fuse OK?
NRS092
OK or NG
OKEGO TO 3.
NGEGO TO 2.
2 CHECK ªMETERº FUSE AGAIN
Replace meter fuse and turn ignition switch ON.
Is meter fuse blown again?
Ye sERepair main harness.
NoEINSPECTION END
3 CHECK ªAIR BAGº WARNING LAMP LED
Is ªAIR BAGº warning lamp LED OK?
OK or NG
OKEGO TO 4.
NGEReplace ªAIR BAGº warning lamp LED.
4 CHECK HARNESS CONNECTION BETWEEN DIAGNOSIS SENSOR UNIT AND ªAIR BAGº WARNING LAMP
Disconnect diagnosis sensor unit connector and turn ignition switch ªONº.
IDoes ªAIR BAGº warning lamp turn on?
YesorNo
Ye sEReplace diagnosis sensor unit.
NoECheck the ground circuit of ªAIR BAGº warning lamp.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-56

Collision Diagnosis
FOR FRONTAL COLLISION
To repair the SRS, perform the following steps.
When SRS (except the side air bag modules) is activated in a collision:
1) Replace the diagnosis sensor unit.
2) Remove the air bag modules (except the side air bag modules) and front seat belt pre-tensioner assem-
blies.
3) Check the SRS components using the table shown below:
IReplace any SRS components showing visible signs of damage (dents, cracks and deformation).
4) Install new air bag modules (except the side air bag module) and front seat belt pre-tensioner assemblies.
5) Conduct self-diagnosis using CONSULT-II or ªAIR BAGº warning lamp. Refer to ªSRS Operation Checkº
for details (RS-36). Ensure entire SRS operation properly.
When SRS is not activated in a collision:
1) Check the SRS components using the table shown below:
IReplace any SRS components showing visible signs of damage (dents, cracks and deformation).
2) Conduct self-diagnosis using CONSULT-II or ªAIR BAGº warning lamp. Refer to ªSRS Operation Checkº
for details (RS-36). Ensure entire SRS operation properly.
SRS Inspection (For frontal collision)
Part SRS is activated SRS is NOT activated
Air bag module (driver
and front passenger
side)REPLACE
Install with new special
bolts coated with bond-
ing agent.1. Remove air bag module. Check harness cover and connectors for damage,
terminals for deformities, and harness for binding.
2.
a. Install driver air bag module into the steering wheel to check fit and align-
ment with the wheel.
b. Install front passenger air bag module into the instrument panel to check fit
with the instrument panel.
3. No damage found, reinstall with new bolts coated with bonding agent.
4. If damagedÐREPLACE. Install air bag modules with new special bolts
coated with bonding agent. Air bag must be deployed before disposal.
Front seat belt pre-ten-
sioner assemblyREPLACE
Install seat belt pre-ten-
sioner with new bolts.1. Remove front 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. If no damage is found, reinstall front seat belt pre-tensioner assembly.
5. If damagedÐREPLACE. Install the front seat belt pre-tensioners with new
bolts coated with bonding agent. Front seat belt pre-tensioners must be
deployed before disposal.
Diagnosis sensor unit REPLACE
Install with new bolts
coated with bonding
agent.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 special bolts and ground bolt
coated with bonding agent.
4. If damagedÐREPLACE. Install diagnosis sensor unit with new special
bolts and ground bolt coated with bonding agent.
Steering wheel 1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
3. Install driver air bag module to check fit or alignment with steering wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall with bolts.
6. If damagedÐREPLACE.
Spiral cable 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 with bolts.
5. If damagedÐREPLACE.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-57

FOR SIDE COLLISION
To repair the SRS for a side collision, perform the following steps.
When the side air bag is activated in the side collision:
1) Replace the following component:
Ð All parts of front seatback (including front seatback frame) with side air bag module (on the side on which
side air bag is activated)
Ð Diagnosis sensor unit
Ð Side air bag (satellite) sensor (on the side on which side air bag is activated)
2) Check the SRS components and the related parts using the table shown below.
IReplace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
3) Conduct self-diagnosis using CONSULT-II or ªAIR BAGº warning lamp. Refer to ªSRS Operation Checkº
for details (RS-36). Ensure entire SRS operation properly.
When SRS is not activated in the side collision:
1) Check the SRS components and the related parts using the table shown below.
IReplace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
2) Conduct self-diagnosis using CONSULT-II or ªAIR BAGº warning lamp. Refer to ªSRS Operation Checkº
for details (RS-36). Ensure entire SRS operation properly.
SRS Inspection (For side collision)
Part Side air bag is activated SRS is NOT activated
Front (LH or RH) side air
bag modulesREPLACE all parts of
front seatback with
deployed front side air
bag module.1. Check for visible signs of damage (dents, tears, deformation) of the seat
back on the collision side.
2. If damagedÐREPLACE the damaged seat parts with new bolts and
remove the front side air bag module.
3. Check for visible signs of damage (tears etc.) of the side air bag module.
4. Check harness and connectors for damage, and terminals for deformities.
5. If no damaged is found, reinstall the front side air bag module with new
nuts.
6. If damagedÐREPLACE the front side air bag module with new nuts. Air
bag must be deployed before disposal.
(LH or RH) side air bag
(satellite) sensorREPLACE the side air
bag (satellite) sensor on
the collision side with
new nuts coated with
bonding agent.
(Repair the center pillar
inner, etc. before install-
ing new one if dam-
aged.)1. Remove the satellite sensor on the collision side. Check harness connec-
tors for damage, terminals for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the satel-
lite sensor.
3. Install the side air bag (satellite) sensor to check fit.
4. If no damage is found, reinstall the side air bag (satellite)sensor with new
nuts.
5. If damagedÐREPLACE the side air bag sensor with new nuts coated with
bonding agent.
Diagnosis sensor unit REPLACE the diagnosis
sensor unit with the new
bolts.1. Check case and bracket for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall the diagnosis sensor unit with new special
bolts and ground bolt.
4. If damagedÐREPLACE. Install the diagnosis sensor unit with new special
bolts and ground bolt.
Front seat belt pre-ten-
sioner assembly1. Check if the seat belt can be extended smoothly.
If the seat belt cannot be extended smoothly.
Ð Check for deformities of the center pillar inner.
Ð If the center pillar inner has no damage, REPLACE the front seat belt pre-tensioner assembly.
2. Remove the front seat belt pre-tensioner assembly on the collision side. Check harness cover and
connectors for damage, terminals for deformities, and harness for binding.
3. Check for visible signs of damage (dents, cracks, deformation) of the front seat belt pre-tensioner
assembly.
4. If no damage is found, reinstall the front seat belt pre-tensioner assembly.
5. If damagedÐREPLACE the front seat belt pre-tensioner assembly with new bolts coated with bonding
agent. The front seat belt pre-tensioner assembly must be deployed before disposal.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Collision Diagnosis (Cont'd)
RS-59

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 system composition which is available to NISSAN MODEL R20 is as follows (The compo-
sition 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).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
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. For removal of Spiral Cable and Air
Bag Module, see the RS section.
IDo 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.
Wiring Diagrams and Trouble Diagnoses
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 diagnoses, refer to the following:
IGI-25, ªHOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSESº
IGI-22, ªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº
PRECAUTIONS
SC-2

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
(Dual Air Bag System)
The Supplemental Restraint System ªAir Bagº and ªSeat Belt Pre-tensionerº, used along with a seat belt, help
to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The Supplemen-
tal Restraint System consists of air bag modules (located in the center of the steering wheel and on the
instrument panel on the passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning lamp, wir-
ing harness and spiral cable.
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 must 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 do so
in this Service Manual. SRS wiring harnesses are covered with yellow insulation (either just before
the harness connectors or for the complete harness), for easy identification.
Precautions for Steering System
IBefore disassembly, thoroughly clean the outside of the unit.
IDisassembly should be done in a clean work area. It is important to prevent the internal parts from
becoming contaminated by dirt or other foreign matter.
IWhen disassembling parts, be sure to place them in order on a part rack so they can be reinstalled
in their proper positions.
IUse nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might
interfere with their operation.
IBefore inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
IBefore assembly, apply a coat of recommended ATF* to hydraulic parts. Vaseline may be applied
to O-rings and seals. Do not use any grease.
IReplace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during instal-
lation. Perform functional tests whenever designated.
*: Automatic transmission fluid
PRECAUTIONS
ST-2