key NISSAN PATROL 1998 Y61 / 5.G Restraint System Workshop Manual

Maintenance Items
CAUTION:
Do not use a circuit tester to check SRS circuit.
1. Check operation of ``AIR BAG'' warning lamp.
After turning ignition key to ``ON'' position, both warning lamps
illuminate. The ``AIR BAG'' warning lamp will go off after about
7 seconds if no malfunction is detected.
If any of the following warning lamp conditions occur, immedi-
ately check the air bag or seat belt pre-tensioner system. Refer
to RS-30 for details.
+The ``AIR BAG'' warning lamp does not illuminate when the
ignition switch is turned ``ON''.
+The ``AIR BAG'' warning lamp does not go off about 7 seconds
after the ignition switch is turned ``ON''.
+The ``AIR BAG'' warning lamp blinks about 7 seconds after the
ignition switch is turned ``ON''.
2. Visually check SRS components.
(1) Diagnosis sensor unit
+Check diagnosis sensor unit and bracket for dents, cracks or
deformities.
+Check connectors for damage, and terminals for deformities.
(2) Air bag module and steering wheel
+Remove air bag module from steering wheel or instrument
panel. Check harness cover and connectors for damage, ter-
minals for deformities, and harness for binding.
+Install driver air bag module to steering wheel to check ®t or
alignment with the wheel.
+Check steering wheel for excessive free play.
+For dual air bag system, install passenger air bag module to
instrument panel to check ®t or alignment with the instrument
panel.
(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) Harness related to SRS
+Check connectors for poor connections, damage, and terminals
for deformities.
+Check harnesses for binding, cha®ng or cut.
(5) 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
bulb or CONSULT. Refer to ``SRS Operation Check'' for details.
(RS-30)
CAUTION:
Replace previously used special bolts, ground bolt and anchor
bolt with new ones.
SRS451
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-11

HOW TO CHANGE SELF-DIAGNOSIS MODE
With CONSULT
From User mode to Diagnosis mode
After selecting AIR BAG on the ``SELECT SYSTEM'' screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis mode to User mode
To return to User mode from diagnosis mode, touch ``BACK'' key of CONSULT until ``SELECT SYSTEM''
appears. Diagnosis mode automatically changes to User mode.
Without CONSULT
From User mode to Diagnosis mode
Diagnosis mode activates only when a malfunction is detected, by
pressing the driver's door switch at least 5 times within 7 seconds
after turning the ignition ``ON''. SRS will not enter Diagnosis mode
if no malfunction is detected.
From Diagnosis mode to User mode
After a malfunction is repaired, switch the ignition ``OFF'' for at least 1 second, then back ``ON''. Diagnosis
mode returns to User mode. If switching from Diagnosis mode to User mode is required while malfunction is
being detected, switch the ignition ``OFF'', then back ``ON'' and press the driver's door switch at least 5 times
within 7 seconds.
SRS391
SRS392
SRS465
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses Introduction (Cont'd)
RS-23

HOW TO ERASE SELF-DIAGNOSIS RESULTS
With CONSULT
+``SELF-DIAG [CURRENT]''
A current Self-diagnosis result is displayed on the CONSULT screen in real time. After the malfunction is
repaired completely, no malfunction is detected on ``SELF-DIAG [CURRENT]''.
+``SELF-DIAG [PAST]''
Return to the ``SELF-DIAG [CURRENT]'' CONSULT screen by
pushing ``BACK'' key of CONSULT and select ``SELF-DIAG
[CURRENT]'' in ``SELECT DIAG MODE''. Touch ``ERASE'' in
``SELF-DIAG [CURRENT]'' mode.
NOTE:
If the memory of the malfunction in ``SELF-DIAG [PAST]'' is not
erased, the User mode shows the system malfunction by the
operation of the warning lamp even if the malfunction is
repaired completely.
+``TROUBLE DIAG RECORD''
The memory of ``TROUBLE DIAG RECORD'' cannot be erased.
Without CONSULT
After a malfunction is repaired, return to User mode from Diagnosis mode by switching the ignition ``OFF'' for
at least 1 second, then back ``ON''. At that time, the problem code is cleared.
How to Perform Trouble Diagnoses for Quick
and Accurate Repair
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a problem. It is important to fully understand the symptoms
or conditions for a customer complaint.
INFORMATION FROM CUSTOMER
WHAT ............ Vehicle model
WHEN ........... Date, Frequencies
WHERE ......... Road conditions
HOW .............. Operating conditions, Symptoms
PRELIMINARY CHECK
Check that the following parts are in good order.
+Battery [Refer to EL section (``BATTERY'').]
+Fuse [Refer to EL section (``Fuse'', ``POWER SUPPLY ROUTING'').]
+System component-to-harness connections
SRS357
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses Introduction (Cont'd)
RS-24

If no self-diagnostic failure is detected on ``SELF-DIAG [CUR-
RENT]'' even though malfunction is detected in SRS Operation
Check (User mode), check the battery voltage. If the battery volt-
age is less than 9V, charge the battery. Then go to DIAGNOSTIC
PROCEDURE 3, page RS-34. If the battery voltage is OK, go to
DIAGNOSTIC PROCEDURE 4, page RS-36, to diagnose the fol-
lowing cases:
+Self-diagnostic failure ``SELF-DIAG [PAST]'' (previously stored
in the memory) might not be erased after repair.
+The SRS system malfunctions intermittently.
8. Touch ``PRINT''.
9. Compare diagnostic codes to ``CONSULT DIAGNOSTIC CODE
CHART'', page RS-33.
10. Touch ``BACK'' key of CONSULT until ``SELECT SYSTEM''
appears in order to return to User mode from Diagnosis mode,
then turn off CONSULT.
11. Turn ignition switch ``OFF'', then disconnect CONSULT and
both battery cables.
12. Repair the system as outlined by the ``Repair order'' in ``CON-
SULT DIAGNOSTIC CODE CHART'', that corresponds to the
problem code. For replacement procedure of component parts,
refer to RS-12.
13. After repairing the system, go to DIAGNOSTIC PROCEDURE
3, page RS-34 for ®nal checking.
CONSULT can only show one seat belt pre-tensioner malfunc-
tion as self-diagnosis result at a time. Check self-diagnosis
result with CONSULT whether other malfunctions are detected
after repairing one seat belt pre-tensioner malfunction.
CONSULT DIAGNOSTIC CODE CHART (``SELF-DIAG
[CURRENT]'')
Diagnostic item ExplanationRepair order
``Recheck SRS at each replacement.''
NO SELF DIAGNOSTIC
FAILURE INDICATED.When malfunction is
indicated by the ``AIR
BAG'' warning lamp in
User mode+Low battery voltage
(Less than 9V)+Go to DIAGNOSTIC PROCEDURE 3 (RS-34)
after charging battery.
+Self-diagnostic fail-
ure ``SELF-DIAG
[PAST]'' (previously
stored in the
memory) might not
be erased after
repair.
+Intermittent problem
has been detected
in the past.+Go to DIAGNOSTIC PROCEDURE 4 (RS-36).
+No malfunction is detected.+Go to DIAGNOSTIC PROCEDURE 3 (RS-34).
AIRBAG MODULE
[OPEN]+Driver's 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's air bag module. (Before disposal
of it, it must be deployed.)
5. Replace the diagnosis sensor unit.
6. Replace the harness. AIRBAG MODULE
[VB-SHORT]+Driver's air bag module circuit is shorted to
some power supply circuit. (including the spi-
ral cable)
AIRBAG MODULE
[GND-SHORT]+Driver's air bag module circuit is shorted to
ground. (including the spiral cable)
AIRBAG MODULE
[SHORT]+Driver's air bag module circuits are shorted to
each other.
SRS049
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT (Cont'd)
RS-33

5. Touch ``AIRBAG''.
6. Touch ``SELF-DIAG [CURRENT]''.
7. If no malfunction is detected on ``SELF-DIAG [CURRENT]'',
repair of SRS is completed.
If any problem code is displayed on ``SELF-DIAG [CURRENT]'',
the malfunctioning part is not repaired completely or another
malfunctioning part is detected. Go to DIAGNOSTIC PROCE-
DURE 2, page RS-32, and repair malfunctioning part com-
pletely.
8. Touch ``ERASE''.
NOTE:
Touch ``ERASE'' to clear the memory of the malfunction
(``SELF-DIAG [PAST]'').
If the memory of the malfunction in ``SELF-DIAG [PAST]'' is not
erased, the User mode shows the system malfunction by the
operation of the warning lamp even if the malfunction is
repaired completely.
9. Touch ``BACK'' key of CONSULT to ``SELECT DIAG MODE''
screen. Touch ``SELF-DIAG [PAST]''.
SRS074
SRS047
SRS049
SRS365
SRS050
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT (Cont'd)
RS-35

10. Check that no self-diagnostic failure is detected on ``SELF-
DIAG [PAST]''.
NOTE:
Past malfunction for seat belt pre-tensioner system will not be
displayed on ``SELF-DIAG [PAST]''.
11. Touch ``BACK'' key of CONSULT until ``SELECT SYSTEM''
appears in order to return to User mode from Diagnosis mode,
turn off CONSULT, then disconnect CONSULT.
12. Turn ignition switch ``OFF''.
13. Go to ``SRS Operation Check'', page RS-30 to check SRS
operation by using ``AIR BAG'' warning lamp with User mode.
DIAGNOSTIC PROCEDURE 4 (Continued from
DIAGNOSTIC PROCEDURE 2) (
with CONSULT)
Inspecting SRS malfunctioning record
Is it the ®rst time for maintenance of
SRS?
Ye s
cNo
Self-diagnostic failure
``SELF-DIAG [PAST]'' (pre-
viously stored in the
memory) might not be
erased after repair.
Go to DIAGNOSTIC PRO-
CEDURE 3, step 8 (RS-
34).
GO TO DIAGNOSTIC PROCEDURE 5
(RS-36).
DIAGNOSTIC PROCEDURE 5
Inspecting SRS intermittent problem by using CONSULT Ð
Diagnosis mode
1. Turn ignition switch ``OFF''.
2. Connect ``CONSULT'' to Data link connector.
3. Turn ignition switch ``ON''.
4. Touch ``START''.
SRS062
SRS468
SRS046
.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT (Cont'd)
RS-36

9. Diagnostic code is displayed on ``TROUBLE DIAG RECORD''.
10. Touch ``PRINT''.
11. Compare diagnostic codes to ``INTERMITTENT PROBLEM
DIAGNOSTIC CODE CHART'', page RS-38.
12. Touch ``BACK'' key of CONSULT until ``SELECT SYSTEM''
appears, then turn off CONSULT.
13. Turn ignition switch ``OFF'', then disconnect CONSULT and
both battery cables.
14. Repair the system as outlined by the ``Repair order'' in ``INTER-
MITTENT PROBLEM DIAGNOSTIC CODE CHART'', that cor-
responds to the problem code. For replacement procedure of
component parts, refer to RS-12.
15. Go to DIAGNOSTIC PROCEDURE 3, page RS-34, for ®nal
checking.
INTERMITTENT PROBLEM DIAGNOSTIC CODE CHART
(``SELF-DIAG [PAST]'' or ``TROUBLE DIAG RECORD'')
Diagnostic item Explanation Repair order
NO SELF DIAGNOSTIC
FAILURE INDICATED.When malfunction is
indicated by the ``AIR
BAG'' warning lamp in
User mode+Low battery voltage
(Less than 9V)+Go to DIAGNOSTIC PROCEDURE 3 (RS-34)
after charging battery.
+No malfunction is detected.+Go to DIAGNOSTIC PROCEDURE 3 (RS-34).
AIRBAG MODULE
[OPEN]+Driver's 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. If the harness check result is OK, replace driver's
air bag module (Before disposal of it, it must be
deployed.), diagnosis sensor unit and spiral
cable. AIRBAG MODULE
[VB-SHORT]+Driver's air bag module circuit is shorted to
some power supply circuit. (including the spi-
ral cable)
AIRBAG MODULE
[GND-SHORT]+Driver's air bag module circuit is shorted to
ground. (including the spiral cable)
AIRBAG MODULE
[SHORT]+Driver's air bag module circuits are shorted to
each other.
ASSIST A/B MODULE
[VB-SHORT]+Front passenger air bag module circuit is
shorted to some power supply circuit.1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace front
air bag module (Before disposal of it, it must be
deployed.), and diagnosis sensor unit. ASSIST A/B MODULE
[OPEN]+Front passenger air bag module circuit is
open.
ASSIST A/B MODULE
[GND-SHORT]+Front passenger air bag module circuit is
shorted to ground.
ASSIST A/B MODULE
[SHORT]+Front passenger air bag module circuits are
shorted to each other.
CONTROL UNIT+Diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace diag-
nosis sensor unit.
*Intermittent problem areas cannot be easily located. For this reason, perform the procedures outlined under the repair order, then
make the ®nal system check.
SRS056
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT (Cont'd)
RS-38

Trouble Diagnoses: ``AIR BAG'' Warning Lamp
Does Not Turn Off
DIAGNOSTIC PROCEDURE 9
Is air bag deployed?
NocYe s
Refer to COLLISION DIAG-
NOSIS (RS-45).
Is SRS ``Air Bag'' fuse OK?
Ye scNo
Replace fuse.
Connect CONSULT and touch
``START''.
+Is ``AIRBAG'' displayed on
CONSULT?
Ye s
cNo
Visually check the wiring
harness connection of diag-
nosis sensor unit. If the har-
ness connection check is
OK, replace diagnosis sen-
sor unit.
Is harness connection between warning
lamp and diagnosis sensor unit OK?
Ye s
cNo
Connect warning lamp and
diagnosis sensor unit con-
nector properly. If warning
lamp still does not go off,
replace harness.
Replace diagnosis sensor unit.
Trouble Diagnoses: ``AIR BAG'' Warning Lamp
Does Not Turn On
DIAGNOSTIC PROCEDURE 10
Is meter fuse OK?
Ye scNo
Replace fuse.
Is warning lamp LED OK?
Ye scNo
Replace warning lamp LED.
1. Disconnect diagnosis sensor unit con-
nector.
2. Turn the ignition key to ON position.
+Does warning lamp turn on?
Ye s
cNo
Check the ground circuit of
``AIR BAG'' warning lamp.
Replace diagnosis sensor unit.
SRS307
SRS180
SRS469
.
.
.
.
.
.
.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
RS-43