1998 NISSAN PATROL ignition

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

SRS Operation Check
DIAGNOSTIC PROCEDURE 1
Checking SRS operation by using ``AIR BAG'' warning lamp Ð
User mode
1. After turning ignition switch from ``OFF'' to ``ON'', ``AIR BAG''
warning lamp operates.
2. Compare ``AIR BAG'' warning lamp operation to the chart
below.
``AIR BAG'' warning lamp operation Ð User mode Ð SRS condition Reference item
MRS095A
No malfunction is
detected. No further action
is necessary.
Ð
MRS096A
The system has problem
and needs to be repaired
as indicated.Go to DIAGNOSTIC
PROCEDURE 2 or 6
(RS-32 or RS-39).
MRS097A
Air bag is deployed. Go to COLLISION
DIAGNOSIS (RS-45).
Air bag fuse, diagnosis
sensor unit or harness is
malfunctioning and needs
to be repaired.Go to DIAGNOSTIC
PROCEDURE 9 (RS-43).
MRS098A
One of the following has
occurred and needs to be
repaired.
+Meter fuse is blown.
+``AIR BAG'' warning
lamp circuit has open or
short.
+Diagnosis sensor unit is
malfunctioning.Go to DIAGNOSTIC
PROCEDURE 10 (RS-43).
NOTE:
If ``AIR BAG'' warning lamp operates differently from the
operations shown above, refer to ``AIR BAG'' warning lamp
operation Ð Diagnosis mode Ð,DIAGNOSTIC PROCEDURE 6
(step 4), RS-39.
SRS466
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
RS-30

Checking seat belt pre-tensioner system operation
Check seat belt pre-tensioner system operation using a bulb as
follows:
1. Connect a bulb of less than 3.4W between data link connector
terminals
V7andV11.
2. After turning ignition switch from ``OFF'' to ``ON'', the bulb oper-
ates.
3. Compare the bulb operation to the chart below.
Lighting condition of the bulb SRS condition Reference item
MRS095A
No malfunction is
detected.
No further action is neces-
sary.
Ð
MRS096A
+Seat belt pre-tensioner
circuit is opened, or
+Seat belt pre-tensioner
power supply or ground
circuit is shorted.+If CONSULT is
available, go to DIAG-
NOSTIC PROCEDURE
2 (RS-32).
+If CONSULT is not
available, repair the sys-
tem as follows.*
1. Visually check the wir-
ing harness connec-
tions.
2. Replace the harness if it
has visible damage.
3. Replace driver's and
front passenger seat
belt assemblies.
(Before disposing, they
must be deactivated.)
4. Replace diagnosis sen-
sor unit.
MRS097A
Seat belt pre-tensioner
(and air bag) is deployed.Go to COLLISION DIAG-
NOSIS (RS-45).
* Follow the procedures in numerical order when repairing malfunctioning parts. Con®rm whether malfunction is eliminated
using a bulb or CONSULT each time repair is ®nished. If malfunction is still observed, proceed to the next step. When mal-
function is eliminated, further repair work is not required.
MRS054AB
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
SRS Operation Check (Cont'd)
RS-31

Trouble Diagnoses with CONSULT
DIAGNOSTIC PROCEDURE 2
Inspecting SRS malfunctioning parts 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''.
5. Touch ``AIRBAG''.
6. Touch ``SELF-DIAG [CURRENT]''.
7. Diagnostic codes are displayed on ``SELF-DIAG [CURRENT]''.
SRS468
SRS046
SRS074
SRS047
SRS048
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
RS-32

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

Diagnostic item ExplanationRepair order
``Recheck SRS at each replacement.''
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. Replace front passenger air bag module. (Before
disposal of it, it must be deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the harness. 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.
DRIVE PRE-TENSIONER
[OPEN/VB-SHORT]+The circuit for the driver's pre-tensioner is
open or shorted to some power supply circuit.1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace the driver's seat belt.
(Before disposing, it must be deactivated.)
4. Replace the diagnosis sensor unit.
5. Replace the harness. DRIVE PRE-TENSIONER
[GND-SHORT]+The circuit for the driver's pre-tensioner is
shorted to ground.
ASSIST
PRE-TENSIONER
[OPEN/VB-SHORT]+The circuit for the front passenger pre-ten-
sioner is open or shorted to some power sup-
ply circuit.1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace the front passenger seat belt.
(Before disposing, it must be deactivated.)
4. Replace the diagnosis sensor unit.
5. Replace the harness. ASSIST
PRE-TENSIONER
[GND-SHORT]+The circuit for the front passenger pre-ten-
sioner is shorted to ground.
CONTROL UNIT+Diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace the diagnosis sensor unit.
4. Replace the harness.
* Follow the procedures in numerical order when repairing malfunctioning parts. Con®rm whether malfunction is eliminated
using the air bag warning lamp or CONSULT each time repair is ®nished. If malfunction is still observed, proceed to the next
step. When malfunction is eliminated, further repair work is not required.
CONSULT can only show one seat belt pre-tensioner malfunction 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.
DIAGNOSTIC PROCEDURE 3
Final checking after repairing SRS by using CONSULT Ð Diag-
nosis mode
1. After repairing SRS, connect both battery cables.
2. Connect CONSULT to Data link connector.
3. Turn ignition switch from ``OFF'' to ``ON''.
4. Touch ``START''.
SRS468
SRS046
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT (Cont'd)
RS-34

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