sensor NISSAN TERRANO 2004 Service Repair Manual

IInstall driver air bag module to steering wheel to check fit or
alignment with the wheel.
I Check steering wheel for excessive free play.
I Install front passenger air bag module to instrument panel to
check fit or alignment with the instrument panel.
I Install front side air bag module to seatback to check fit and
alignment with the seat.
3) Spiral cable
I Check spiral cable for dents, cracks, or deformities.
I Check connectors and protective tape for damage.
I Check steering wheel for noise, binding or heavy operation.
4) Main harness, body harness, side air bag module sub-harness
I Check connectors for poor connections, damage, and terminals
for deformities.
I Check harnesses for binding, chafing or cut.
5) Front seat belt pre-tensioner
I Check harness cover and connectors for damage, terminals for
deformities, and harness for binding.
I Check belts for damage and anchors for loose mounting.
I Check retractor for smooth operation.
I Perform self-diagnosis for seat belt pre-tensioner using ªAIR
BAGº warning lamp or CONSULT-II.
Refer to ªSRS Operation Checkº for details. (RS-38)
6) Side air bag (satellite) sensor
I Check side air bag (satellite) sensor (including bracket portion)
for dents, cracks or deformities.
I Check 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:
I Before servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
I The 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.
I Check diagnosis sensor unit for proper installation.
I Check 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.
I Check diagnosis sensor unit brackets to ensure they are
free of deformities or rust.
I Replace diagnosis sensor unit if it has been dropped or
sustained an impact.
I After replacement of diagnosis sensor unit, perform self-
diagnosis for SRS. Refer to ªSRS Operation Checkº for
details. (RS-38)
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-13
http://vnx.su/

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.
I Check front seat front belt pre-tensioner with load limiter
for proper installation.
I After replacement of front seat belt pre-tensioner, check
SRS function and perform self-diagnosis for SRS.
I Refer to ªSRS Operation Checkº for details. (RS-38)
I Do not attempt to disassemble front seat belt pre-tensioner
with load limiter.
I Replace front seat belt pre-tensioner if it has been dropped
or sustained an impact.
I Do 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:
I To install, reverse the removal procedure sequence.
YRS071
YRS072
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Diagnosis Sensor Unit (Cont'd)
RS-14
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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.
I Do not use old bolts coated with bonding agent after
removal; replace with new ones.
I Check side air bag (satellite) sensor for proper installation.
I Check 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.
I After replacement of side air bag (satellite) sensor, check
SRS function and perform self-diagnosis for SRS. Refer to
ªSRS Operation Checkº for details. (RS-38)
I Do not attempt to disassemble side air bag (satellite) sen-
sor.
I Replace 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:
I To install, reverse the removal procedure sequence.
I Face the connector rearward and the label upward.
YRS122
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-15
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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.
I Do not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged,
replace it with a new one.
I Keep 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
I 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.
I 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.
I ªTROUBLE DIAG RECORDº
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be displayed
on the CONSULT-II screen.
I ªECU 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-28
http://vnx.su/

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 BAGºwarning lamp operates.
2. Compare ªAIR BAGº warning lamp operation to the chart below.
ªAIR BAGº warning lamp operation Ð User mode Ð SRS conditionReference 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-39 or
RS-48).
MRS097A
Air bag or/and seat belt pre-
tensioner is deployed.
Go to COLLISION DIAGNO-
SIS (RS-59).
Air bag fuse, diagnosis sen-
sor unit or harness is mal-
functioning and needs to be
repaired. Go to DIAGNOSTIC PRO-
CEDURE 9 (RS-56).
MRS098A
One of the following has
occurred and needs to be
repaired.
I
Meter fuse is blown.
ªAIR BAGº warning lamp
circuit has open or short.
I Diagnosis sensor unit is
malfunctioning. Go to DIAGNOSTIC PRO-
CEDURE 10 (RS-58).
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-48.
SRS800
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-38
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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-44, to diagnose the following
situations:
ISelf-diagnostic result ªSELF-DIAG [PAST]º (previously stored
in the memory) might not be erased after repair.
I The SRS system malfunctions intermittently.
8. Touch ªPRINTº.
9. Compare diagnostic codes to ªCONSULT-II Diagnostic Code Chartº, page RS-40.
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-13.
13. After repairing the system, go to DIAGNOSTIC PROCEDURE 3, page RS-42 for final checking.
CONSULT-II DIAGNOSTIC CODE CHART (ªSELF-DIAG
[CURRENT]º)
Diagnostic item Explanation Repair order
ªRecheck SRS at each replacement.º
NO DTC IS
DETECTED. When malfunction is
indicated by the ªAIR
BAGº warning lamp is
user mode.I
Self-diagnostic result ªSELF-DIAG
[PAST]º (previously stored in the
memory) might not be erased after
repair.
I Intermittent malfunction has been
detected in the past. I
Go to DIAGNOSTIC PROCEDURE 4
(RS-42) after charging battery.
I No malfunction is detected. IGo to DIAGNOSTIC PROCEDURE 3
(RS-42).
AIRBAG MODULE
[OPEN] I
Driver 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]
I
Driver air bag module circuit is shorted to a power supply cir-
cuit. (including the spiral cable)
AIRBAG MODULE
[GND-SHORT] I
Driver air bag module circuit is shorted to ground. (including
the spiral cable)
AIRBAG MODULE
[SHORT] I
Driver air bag module circuit is shorted between wires.
SRS701
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-40
http://vnx.su/

Diagnostic itemExplanation Repair order
ªRecheck SRS at each replacement.º
ASSIST A/B MODULE
[VB-SHORT] I
Front 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]
I
Front passenger air bag module circuit is open.
ASSIST A/B MODULE
[GND-SHORT] I
Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT] I
Front passenger air bag module circuit is shorted between
wires.
SIDE MODULE LH
[OPEN] I
Front 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]
I
Front LH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE LH
[GND-SHORT] I
Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT] I
Front LH side air bag module circuit is shorted between wires.
SIDE MODULE RH
[OPEN] I
Front 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]
I
Front RH side air bag module circuit is shorted to a power
supply circuit.
SIDE MODULE RH
[GND-SHORT] I
Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT] I
Front RH side air bag module circuit is shorted between wires.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL] I
LH 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] I
RH 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] I
The 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]
I
The circuit for front LH seat belt pre-tensioner is shorted to
ground.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-41
http://vnx.su/

Diagnostic itemExplanation Repair order
ªRecheck SRS at each replacement.º
PRE-TEN FRONT RH
[OPEN/VB-SHORT] I
The 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]
I
The circuit for front RH seat belt pre-tensioner is shorted to
ground.
INDEFINITE FAIL-
URES (AIR BAG) I
A 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 UNIT ILow battery voltage (Less than 9V) IGo to DIAGNOSTIC PROCEDURE 3
(RS-42) after charging battery.
I Diagnosis 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-42
http://vnx.su/

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-13.
15. Go to DIAGNOSTIC PROCEDURE 3, page RS-42, for final- checking.
INTERMITTENT MALFUNCTION DIAGNOSTIC CODE
CHART (ªSELF-DIAG [PAST] or TROUBLE DIAG
RECORDº)
Diagnostic item ExplanationRepair order
NO DTC IS DETECTED. INo malfunction is detected. IGo to DIAGNOSTIC PROCEDURE 3
(RS-42).
AIRBAG MODULE
[OPEN] I
Driver 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]
I
Driver air bag module circuit is shorted
to a power supply circuit. (including the
spiral cable)
AIRBAG MODULE
[GND-SHORT] I
Driver air bag module circuit is shorted
to ground. (including the spiral cable)
AIRBAG MODULE
[SHORT] I
Driver air bag module circuit is shorted
between wires.
SRS697
SRS704
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-46
http://vnx.su/

Diagnostic itemExplanationRepair order
ASSIST A/B MODULE
[VB-SHORT] I
Front passenger air bag module circuit
is shorted to a power supply circuit. 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 diagnosis sensor unit and passenger air
bag module. (Before disposing of the
passenger air bag module, it must be
deployed.)
ASSIST A/B MODULE
[OPEN]
I
Front passenger air bag module circuit
is open.
ASSIST A/B MODULE
[GND-SHORT] I
Front passenger air bag module circuit
is shorted to ground.
ASSIST A/B MODULE
[SHORT] I
Front passenger air bag module circuit
is shorted between wires.
SIDE MODULE LH
[OPEN] I
Front LH side air bag module circuit is
open. 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 diagnosis sensor unit and front LH side
air bag module. (Before disposing of the
front LH side air bag module, it must be
deployed.)
SIDE MODULE LH
[VB-SHORT]
I
Front LH side air bag module circuit is
shorted to a power supply circuit.
SIDE MODULE LH
[GND-SHORT] I
Front LH side air bag module circuit is
shorted to ground.
SIDE MODULE LH
[SHORT] I
Front LH side air bag module circuit is
shorted between wires.
SIDE MODULE RH
[OPEN] I
Front RH side air bag module circuit is
open. 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 diagnosis sensor unit and front RH side
air bag module. (Before disposing of the
front RH side air bag module, it must be
deployed.)
SIDE MODULE RH
[VB-SHORT]
I
Front RH side air bag module circuit is
shorted to a power supply circuit.
SIDE MODULE RH
[GND-SHORT] I
Front RH side air bag module circuit is
shorted to ground.
SIDE MODULE RH
[SHORT] I
Front RH side air bag module circuit is
shorted between wires.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL] I
LH side air bag (satellite) sensor 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 diagnosis sensor unit and LH side air
bag (satellite) sensor.
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL] I
RH side air bag (satellite) sensor 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 diagnosis sensor unit and RH side air
bag (satellite) sensor.
PRE-TEN FRONT LH
[OPEN/VB-SHORT] I
The circuit for front LH seat belt pre-
tensioner is open or shorted to a power
supply circuit. 1. Visually check the wiring harness con-
nections.
2. Replace the harness if it has visible damage.
3. If the harness check is OK, replace the diagnosis sensor unit and front LH seat
belt. (Before disposing of the front LH
seat belt pre-tensioner, if must be
deployed.)
PRE-TEN FRONT LH
[GND-SHORT]
I
The circuit for front LH seat belt pre-
tensioner is shorted to ground.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-47
http://vnx.su/