unit NISSAN TERRANO 2002 Service Repair Manual

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

DEPLOYMENT PROCEDURES FOR SEAT BELT PRE-
TENSIONER AS A UNIT (OUTSIDE OF VEHICLE)
1. Firmly secure front seat belt pre-tensioner in a vise.
CAUTION:
Ensure bracket and webbing are placed in a vise.
2. Connect deployment tool adapter (SST: KV99108200) to
deployment tool (SST: KV99106400) connector and front seat
belt pre-tensioner connector.
3. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
4. The lamp on the right side of the tool, marked ªdeployment tool
powerº, should glow green, not red.
5. Press the button on the deployment tool. The left side lamp on
the tool, marked ªseat belt pre-tensioner connector voltageº, will
illuminate and the front seat belt pre-tensioner will deploy.
CAUTION:
When deploying the front seat belt pre-tensioner, stand at
least 5 m (16 ft) away from the front seat belt pre-tensioner.
DEPLOYMENT OF AIR BAG MODULE AND SEAT BELT
PRE-TENSIONER WHILE MOUNTED IN VEHICLE
When disposing of a vehicle, deploy air bag module and seat belt
pre-tensioner while they are mounted in vehicle.
CAUTION:
When deploying air bag module or seat belt pre-tensioner,
ensure vehicle is empty.
1. Disconnect both the vehicle battery cables and wait 10 minutes.
2. Disconnect air bag module and seat belt pre-tensioner connec-
tor.
3. Connect deployment tool (SST: KV99106400) to air bag mod-
ule or seat belt pre-tensioner.
For front passenger air bag module, attach deployment tool
adapter (SST: KV99108300) to the tool connector. For front
side air bag module (built-in type), attach deployment tool
adapter (SST: KV99108300). For front seat belt pre-tensioner,
attach deployment tool adapter (SST: KV99108200) to the tool
connector.
SBF272H
SBF273H
SBF274H
MBF481B
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Disposal of Air Bag Module and Seat Belt Pre-
tensioner (Cont'd)
RS-24

Trouble Diagnoses Introduction
CAUTION:
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.
IDo not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged,
replace it with a new one.
IKeep ground portion clean.
DIAGNOSIS FUNCTION
The 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.
DIAGNOSIS MODE FOR CONSULT-II
IªSELF-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.
IªSELF-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.
IªTROUBLE DIAG RECORDº
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be displayed
on the CONSULT-II screen.
IªECU DISCRIMINATED NO.º
The diagnosis sensor unit for each vehicle model is assigned with its own, individual classification num-
ber (refer to the table below). This number will be displayed on the CONSULT-II screen. When replacing
the diagnosis sensor unit, refer to the part number for the compatibility. After installation, replacement with
a correct unit can be checked by confirming this classification number on the CONSULT-II screen.
For NISSAN MODEL R20, the diagnosis sensor unit classification numbers are as follows:
MODEL ECU DISCRIMINATED NO.
Models with single air bag and seat belt pre-tensioner A928
Models with dual air bags and seat belt pre-tensioner A929
Models with dual air bags, side air bag and seat belt pre-tensioner A930
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-26

SRS Operation Check
DIAGNOSTIC PROCEDURE 1
Checking Air Bag Operation by Using ªAIR BAGº
Warning Lamp Ð User Mode
1. After turning ignition switch from ªOFFº to ªONº, ªAIR BAGº
warning lamp operates.
2. Compare ªAIR BAGº warning lamp operation to the chart below.
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 2 or 6 (RS-37 or
RS-46).
MRS097A
Air bag or/and 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.
ªAIR BAGº warning lamp
circuit has open or short.
IDiagnosis sensor unit is
malfunctioning.Go to DIAGNOSTIC PRO-
CEDURE 10 (RS-56).
NOTE:
If ªAIR BAGº warning lamp operates differently from the
operations shown above, refer to ªAIR BAGº warning lamp
operation Ð Diagnosis mode Ð,DIAGNOSTIC PROCEDURE 6
(step 4), RS-46.
SRS800
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-36

If no malfunction is detected on ªSELF-DIAG [CURRENT]º but mal-
function is indicated by the ªAIR BAGº warning lamp, go to DIAG-
NOSTIC PROCEDURE 4, page RS-42, to diagnose the following
situations:
ISelf-diagnostic result ªSELF-DIAG [PAST]º (previously stored
in the memory) might not be erased after repair.
IThe SRS system malfunctions intermittently.
8. Touch ªPRINTº.
9. Compare diagnostic codes to ªCONSULT-II Diagnostic Code
Chartº, page RS-38.
10. Touch ªBACKº key of CONSULT-II until ªSELECT SYSTEMº
appears in order to return to User mode from Diagnosis mode.
11. Turn ignition switch ªOFFº, then turn off and disconnect
CONSULT-II, and disconnect both battery cables.
12. Repair the system as outlined by the ªRepair orderº in ªCON-
SULT-II Diagnostic Code Chartº, that corresponds to the self-
diagnostic result. For replacement procedure of component
parts, refer to RS-11.
13. After repairing the system, go to DIAGNOSTIC PROCEDURE
3, page RS-40 for final checking.
CONSULT-II DIAGNOSTIC CODE CHART (ªSELF-DIAG
[CURRENT]º)
Diagnostic item ExplanationRepair order
ªRecheck SRS at each replacement.º
NO DTC IS
DETECTED.When malfunction is
indicated by the ªAIR
BAGº warning lamp is
user mode.ISelf-diagnostic result ªSELF-DIAG
[PAST]º (previously stored in the
memory) might not be erased after
repair.
IIntermittent malfunction has been
detected in the past.IGo to DIAGNOSTIC PROCEDURE 4
(RS-40) after charging battery.
INo malfunction is detected.IGo to DIAGNOSTIC PROCEDURE 3
(RS-40).
AIRBAG MODULE
[OPEN]IDriver air bag module circuit is open. (including the spiral
cable)1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the spiral cable.
4. Replace driver air bag module.
(Before disposal, it must be
deployed.)
5. Replace the diagnosis sensor unit.
6. Replace the related harness. AIRBAG MODULE
[VB-SHORT]IDriver air bag module circuit is shorted to a power supply cir-
cuit. (including the spiral cable)
AIRBAG MODULE
[GND-SHORT]IDriver air bag module circuit is shorted to ground. (including
the spiral cable)
AIRBAG MODULE
[SHORT]IDriver air bag module circuit is shorted between wires.
SRS701
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-38

Diagnostic item ExplanationRepair order
ªRecheck SRS at each replacement.º
ASSIST A/B MODULE
[VB-SHORT]IFront passenger air bag module circuit is shorted to a power
supply circuit.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger air bag
module.
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. ASSIST A/B MODULE
[OPEN]IFront passenger air bag module circuit is open.
ASSIST A/B MODULE
[GND-SHORT]IFront passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]IFront passenger air bag module circuit is shorted between
wires.
SIDE MODULE LH
[OPEN]IFront LH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front LH side air bag mod-
ule.
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE LH
[VB-SHORT]IFront LH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE LH
[GND-SHORT]IFront LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]IFront LH side air bag module circuit is shorted between wires.
SIDE MODULE RH
[OPEN]IFront RH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front RH side air bag mod-
ule.
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]IFront RH side air bag module circuit is shorted to a power
supply circuit.
SIDE MODULE RH
[GND-SHORT]IFront RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]IFront RH side air bag module circuit is shorted between wires.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]ILH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the LH side air bag (satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]IRH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the RH side air bag (satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[OPEN/VB-SHORT]IThe circuit for front LH seat belt pre-tensioner is open or
shorted to a power supply circuit.1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace front LH seat belt.
(Before disposal, it must be deacti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[GND-SHORT]IThe circuit for front LH seat belt pre-tensioner is shorted to
ground.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-39

Diagnostic item ExplanationRepair order
ªRecheck SRS at each replacement.º
PRE-TEN FRONT RH
[OPEN/VB-SHORT]IThe circuit for front RH seat belt pre-tensioner is open or
shorted to a power supply circuit.1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace front RH seat belt.
(Before disposal, it must be deacti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[GND-SHORT]IThe circuit for front RH seat belt pre-tensioner is shorted to
ground.
INDEFINITE FAIL-
URES (AIR BAG)IA problem which cannot be specified occurs because more
than two parts are out of order.1. Visually check wiring harness con-
nections.
2. Replace diagnosis sensor unit.
3. Replace spiral cable and air bag
modules.
4. Replace air bag and pre-tensioner
harness.
5. Replace main harness.
INDEFINITE FAIL-
URES
(PRE-TENSIONER)Driver's and front passenger seat belt pre-tensioners are out of
order.1. Visually check wiring harness con-
nections.
2. Replace diagnosis sensor unit.
3. Replace spiral cable and air bag
modules.
4. Replace air bag and pre-tensioner
harness.
5. Replace main harness.
CONTROL UNITILow battery voltage (Less than 9V)IGo to DIAGNOSTIC PROCEDURE 3
(RS-40) after charging battery.
IDiagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace diagnosis sensor unit.
4. Replace the related harness.
* Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is eliminated using the
air bag warning lamp or CONSULT-II each time repair is finished. If malfunction is still observed, proceed to the next step. When mal-
function is eliminated, further repair work is not required.
DIAGNOSTIC PROCEDURE 3
Final checking after repairing SRS by using CONSULT-II Ð
Diagnosis mode
1. After repairing SRS, connect both battery cables.
2. Connect CONSULT-II to data link connector.
3. Turn ignition switch from ªOFFº to ªONº.
NRS122
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-40

8. Touch ªTROUBLE DIAG RECORDº.
NOTE:
With ªTROUBLE DIAG RECORDº, diagnosis results previously
erased by a reset operation can be displayed.
9. Diagnostic code is displayed on ªTROUBLE DIAG RECORDº.
10. Touch ªPRINTº.
11. Compare diagnostic codes to ªIntermittent Malfunction Diag-
nostic Code Chartº, page RS-53.
12. Touch ªBACKº key of CONSULT-II until ªSELECT SYSTEMº
appears.
13. Turn ignition switch ªOFFº, then turn off and disconnect
CONSULT-II, and disconnect both battery cables.
14. Repair the system as outlined by the ªRepair orderº in ªInter-
mittent Malfunction Diagnostic Code Chartº, that corresponds
to the self-diagnostic result. For replacement procedure of com-
ponent parts, refer to RS-11.
15. Go to DIAGNOSTIC PROCEDURE 3, page RS-40, for final-
checking.
INTERMITTENT MALFUNCTION DIAGNOSTIC CODE
CHART (ªSELF-DIAG [PAST] or TROUBLE DIAG
RECORDº)
Diagnostic item Explanation Repair order
NO DTC IS DETECTED.INo malfunction is detected.IGo to DIAGNOSTIC PROCEDURE 3
(RS-49).
AIRBAG MODULE
[OPEN]IDriver air bag module circuit is open.
(including the spiral cable)1. Visually check the wiring harness con-
nection.
2. Replace the harness if it has visible
damage.
3. If the harness check is OK, replace the
spiral cable, diagnosis sensor unit and
driver air bag module. (Before disposing
of the driver air bag module, it must be
deployed.) AIRBAG MODULE
[VB-SHORT]IDriver air bag module circuit is shorted
to a power supply circuit. (including the
spiral cable)
AIRBAG MODULE
[GND-SHORT]IDriver air bag module circuit is shorted
to ground. (including the spiral cable)
AIRBAG MODULE
[SHORT]IDriver air bag module circuit is shorted
between wires.
SRS697
SRS704
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-44