1999 NISSAN PICK-UP IGNITION

DIAGNOSTIC PROCEDURE 3 (without CONSULT)
Inspecting SRS malfunctioning parts by using ``AIR BAG''
warning lamp Ð Diagnosis mode
NOTE:
SRS will not enter Diagnosis mode if no malfunction is
detected in User mode.
1. Open driver's door.
2. Turn ignition switch from ``OFF'' to ``ON''.
3. Press driver's door switch at least 5 times within 7 seconds
after turning ignition switch ``ON''.
SRS is now in Diagnosis mode.
4. ``AIR BAG'' warning lamp operates in Diagnosis mode as
follows:
NOTE:
If SRS does not enter Diagnosis mode even though malfunc-
tion is detected in User mode, go to DIAGNOSTIC PROCE-
DURE 11, page RS-2038.
No. ``AIR BAG'' warning lamp flash pattern Ð Diagnosis mode Ð SRS condition
1
SRS333
V0athroughV0bare repeated.lDiagnosis
results (previ-
ously stored
in the
memory)
might not be
erased after
repair.
lIntermittent
malfunction
has been
detected in
the past.
Go to DIAG-
NOSTIC PRO-
CEDURE 7 (RS-
2034).
2
SRS341
V0athroughV0dare repeated.
V0bÐ Driver and passenger air bag
marker (For identifying driver
and/or passenger air bag mal-
functioning)
V0dÐ Indicates malfunctioning part.
The number of flash varies with
malfunctioning part (0.5 sec.
ON and 0.5 sec. OFF is
counted as one flash.)The system is
malfunctioning
and needs to be
repaired.
5. Malfunctioning part is indicated by the number of flashes
(part
V0d). Compare the number of flashes to AIR BAG
WARNING LAMP FLASH CODE CHART, page RS-2030,
and locate malfunctioning part.
6. Turn ignition switch ``OFF'', and disconnect both battery
cables.
7. Repair the system as outlined by the ``Repair order'' in AIR
BAG WARNING LAMP FLASH CODE CHART that corre-
sponds to the flash code. For replacement procedure of com-
ponent parts, refer to RS-2007.
8. After repairing the system, go to DIAGNOSTIC PROCE-
DURE 5, page RS-2032.
SRS170
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-2029

AIR BAG WARNING LAMP FLASH CODE CHART (DIAGNOSIS MODE)
Warning
lampFlash codeV0d
(# of flashes)ExplanationRepair order
``Recheck SRS at each replacement.''
``AIR BAG'' warning lamp
0lDiagnosis results (previously stored in the
memory) might not be erased after repair.
lIntermittent malfunction has been detected in
the past.Go to DIAGNOSTIC PROCEDURE 7 (RS-2034).
2 The driver's air bag module circuit is malfunction-
ing.1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace the spiral cable.
4. Replace the driver's air bag module.
(Before disposing of it, it must be deployed.)
5. Replace the diagnosis sensor unit.
6. Replace the related harness.
7 The 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 related harness.
8 The front passenger air bag module circuit is
malfunctioning.1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace the front passenger air bag module.
(Before disposing of it, it must be deployed.)
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 eliminated
using the air bag warning lamp or CONSULT each time repair is finished. If malfunction is still observed, proceed to the
next step. When malfunction is eliminated, further repair work is not required.
DIAGNOSTIC PROCEDURE 4 (with CONSULT)
Final checking after repairing SRS by using CONSULT Ð
Diagnosis 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''.
SRS733
SRS046
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-2030

10. Check that no malfunction is detected on ``SELF-DIAG
[PAST]''.
11. Touch ``BACK'' key of CONSULT until SELECT SYSTEM
appears, turn off CONSULT, then disconnect CONSULT.
12. Turn ignition switch ``OFF''.
13. Go to DIAGNOSTIC PROCEDURE 1, page RS-2025 to
check SRS operation by using ``AIR BAG'' warning lamp with
User mode.
DIAGNOSTIC PROCEDURE 5 (without CONSULT)
Final checking after repairing SRS by using ``AIR BAG''
warning 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 ``OFF'' to ``ON''.
4. ``AIR BAG'' warning lamp operates in Diagnosis mode as
follows:
No. ``AIR BAG'' warning lamp flash pattern Ð Diagnosis mode Ð SRS condition
1
SRS333
V0athroughV0bare repeated. No malfunc-
tion is
detected or
repair is com-
pleted.
No further
action is nec-
essary.
2
SRS341
V0athroughV0dare repeated.
V0bÐ Driver and passenger air
bag marker (For identifying
driver and/or passenger air
bag malfunctioning)
V0dÐ Indicates malfunctioning
part. The number of
flashes varies with mal-
functioning part (0.5 sec.
ON and 0.5 sec. OFF is
counted as one flash.)The system is
malfunctioning
and needs to
be repaired.
SRS062
SRS170
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-2032

NOTE:
When diagnosis sensor unit is replaced with new one, ``AIR
BAG'' warning lamp will operate in User mode. Checking
``AIR BAG'' warning lamp operation in Diagnosis mode is
not required. Go to step 6.
5. If ``AIR BAG'' warning lamp operates as shown in No. 1 in
chart above, turn ignition switch ``OFF'' to reset from Diag-
nosis mode to User mode and to erase the memory of the
malfunction. Then go to step 6.
If ``AIR BAG'' warning lamp operates as shown in No. 2 in
chart above, the malfunctioning part is not repaired
completely, or another malfunctioning part is detected. Go to
DIAGNOSTIC PROCEDURE 3, page RS-2029, and repair
malfunctioning part completely.
6. Turn ignition switch ``ON''. ``AIR BAG'' warning lamp operates
in User mode. Compare ``AIR BAG'' warning lamp operation
to the chart below.
NOTE:
If switching Diagnosis mode to User mode is required while
malfunction is being detected, turn ignition switch from
``OFF'' to ``ON''. Then press driver's door switch at least 5
times within 7 seconds after turning ignition switch ``ON''.
SRS is now in User mode.
``AIR BAG'' 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 3 (RS-2026
or 2029).
MRS097A
Air bag is deployed. Go to COLLISION DIAG-
NOSIS (RS-2039).
Air bag fuse diagnosis
sensor unit or harness is
malfunctioning and needs
to be repaired.Go to DIAGNOSTIC PRO-
CEDURE 9 (RS-2037).
MRS098A
One of the following has
occurred and needs to be
repaired.
lMeter fuse is blown.
l``AIR BAG'' warning lamp
circuit has open or short.
lDiagnosis sensor unit is
malfunctioning.Go to DIAGNOSTIC PRO-
CEDURE 10 (RS-2037).
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-2033

DIAGNOSTIC PROCEDURE 6 (Continued from
DIAGNOSTIC PROCEDURE 2)
Inspecting SRS malfunctioning record
Is it the first time for maintenance of
SRS?
Yes
cNo
``SELF-DIAG [PAST]''
(which was previously
entered) is still retained in
memory.
Go to DIAGNOSTIC PRO-
CEDURE 4 (RS-2030).
Go to DIAGNOSTIC PROCEDURE 8
(RS-2034).
DIAGNOSTIC PROCEDURE 7 (Continued from
DIAGNOSTIC PROCEDURE 3) (
without
CONSULT)
Inspecting SRS malfunctioning record
Is it the first time for maintenance of
SRS?
Yes
cNo
Diagnosis results (previ-
ously stored in the
memory) might not be
erased after repair.
Go to DIAGNOSTIC PRO-
CEDURE 5, step 5 (RS-
2032).
GO TO DIAGNOSTIC PROCEDURE 8
(RS-2034).Further inspection cannot be
performed without CONSULT.
DIAGNOSTIC PROCEDURE 8 (with CONSULT)
Inspecting SRS intermittent malfunction 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''.
SRS733
SRS046
.
.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-2034

9. Diagnostic code is displayed on ``TROUBLE DIAG
RECORD''.
10. Touch ``PRINT''.
11. Compare diagnostic codes to the INTERMITTENT MAL-
FUNCTION DIAGNOSTIC CODE CHART, page RS-2036.
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
INTERMITTENT MALFUNCTION DIAGNOSTIC CODE
CHART, that corresponds to the self-diagnosis result. For
replacement procedure of component parts, refer to
RS-2007.
15. Go to DIAGNOSTIC PROCEDURE 4, page RS-2030.
INTERMITTENT MALFUNCTION 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
lLow battery voltage
(Less than 9V)lGo to DIAGNOSTIC PROCEDURE 4 (RS-
2030) after charging battery.
lNo malfunction is detected.lGo to DIAGNOSTIC PROCEDURE 4 (RS-
2030).
AIRBAG MODULE
[OPEN]
lDriver's air bag module circuit is open. (includ-
ing the spiral cable)1. Visually check the wiring harness connection.
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 the driver air
bag module, it must be deployed.) AIRBAG MODULE
[VB-SHORT]
lDriver's air bag module circuit is shorted to
some power supply circuit. (including the spi-
ral cable)
AIRBAG MODULE
[GND-SHORT]
lDriver's air bag module circuit is shorted to
ground. (including the spiral cable)
AIRBAG MODULE
[SHORT]
lDriver's air bag module circuits are shorted to
each other.
ASSIST A/B MODULE
[VB-SHORT]
lFront 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 is OK, replace the diag-
nosis sensor unit and passenger air bag
module. (Before disposing the passenger air
bag module, it must be deployed.) ASSIST A/B MODULE
[OPEN]
lFront passenger air bag module circuit is
open.
ASSIST A/B MODULE
[GND-SHORT]
lFront passenger air bag module circuit is
shorted to ground.
ASSIST A/B MODULE
[SHORT]
lFront passenger air bag module circuits are
shorted to each other.
CONTROL UNIT
lDiagnosis 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 is OK, replace the diag-
nosis sensor unit.
* Follow the procedures in numerical order when repairing malfunctioning parts, then make the final system check.
SRS056
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-2036

Trouble Diagnoses for Air Bag Warning
Lamp
DIAGNOSTIC PROCEDURE 9
SYMPTOM: ``AIR BAG'' warning lamp does not turn off.
Is air bag module deployed?
No
cYes
Replace air bag module
and diagnosis sensor unit.
Refer to COLLISION
DIAGNOSIS, (RS-2039).
Is SRS ``AIR BAG'' fuse OK?
Yes
cNo
Replace fuse and turn
ignition switch ON. If SRS
``AIR BAG'' fuse is blown
again, repair related har-
ness.
Connect CONSULT and touch
``START''.
lIs ``AIRBAG'' displayed on
CONSULT?
Yes
cNo
Replace diagnosis sensor
unit.
Is harness connection between warning
lamp and diagnosis sensor unit OK?
Yes
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.
DIAGNOSTIC PROCEDURE 10
SYMPTOM: ``AIR BAG'' warning lamp does not turn on.
Is meter fuse OK?
Yes
cNo
Replace fuse and turn
ignition switch ON. If
meter fuse is blown again,
repair related harness.
Is warning lamp LED OK?
Yes
cNo
Replace warning lamp
LED.
1. Disconnect diagnosis sensor unit con-
nector.
2. Turn the ignition key to ON position.
lDoes warning lamp turn on?
Yes
cNo
Connect warning lamp and
diagnosis sensor unit con-
nector properly. If warning
lamp still does not come
on, replace harness.
Replace diagnosis sensor unit.
SRS734
SRS543
SRS745
.
.
.
.
.
.
.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
RS-2037