NISSAN PATROL 2000 Electronic Repair Manual

TRS012M
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Wiring Diagram Ð SRS Ð/RHD Models (Cont'd)
RS-1029

WITH CONSULT-II (Except for Australia with TD engine)
TRS014M
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Wiring Diagram Ð SRS Ð/RHD Models (Cont'd)
RS-1030

TRS015M
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Wiring Diagram Ð SRS Ð/RHD Models (Cont'd)
RS-1031

Self-diagnosis
DIAGNOSTIC PROCEDURE 1 (without
CONSULT-II)
Checking SRS 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-1034
or 1044).
MRS097A
Air bag is deployed. Go to COLLISION DIAG-
NOSIS (RS-1052).
Air bag fuse, diagnosis
sensor unit or harness is
malfunctioning and needs
to be repaired.Go to DIAGNOSTIC PRO-
CEDURE 9 (RS-1050).
MRS098A
One of the following has
occurred and needs to be
repaired.
+Meter fuse is blown.
+ªAIR BAGº warning lamp
circuit has open or
short.
+Diagnosis sensor unit is
malfunctioning.Go to DIAGNOSTIC PRO-
CEDURE 10 (RS-1051).
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-1044.
SRS465
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
RS-1032

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 connec-
tor terminals
V3andV8.
2.After turning ignition switch from ªOFFº to ªONº, 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 necessary.
Ð
MRS096A
+Seat belt pre-tensioner cir-
cuit is opened, or
+Seat belt pre-tensioner
power supply or ground cir-
cuit is shorted.+If CONSULT-II is available,
go to DIAGNOSTIC PRO-
CEDURE 2 (RS-1034).
+If CONSULT-II is not
available, repair the system
as follows.*
1. Visually check the wiring
harness connections.
2. Replace the harness if it
has visible damage.
3. Replace driver's and front
passenger seat belt assem-
blies.
(Before disposing, they
must be deactivated.)
4. Replace diagnosis sensor
unit.
MRS097A
Seat belt pre-tensioner (and
air bag) is deployed.Go to COLLISION DIAGNO-
SIS (RS-1052).
* Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is eliminated
using a bulb or CONSULT-II 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.
SRS848
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1033

DIAGNOSTIC PROCEDURE 2 (with CONSULT-II)
Inspecting SRS malfunctioning parts by using CONSULT-II
Ð Diagnosis mode
1. Turn ignition switch ªOFFº.
2. Connect CONSULT-II to data link connector.
3. Turn ignition switch ªONº.
4. Touch ªSTARTº.
5. Touch ªAIR BAGº.
6. Touch ªSELF-DIAG [CURRENT]º.
7. Diagnostic codes are displayed on ªSELF-DIAG [CUR-
RENT]º.
SRS468-A
SRS695
SRS771
SRS697
SRS772
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1034

If no malfunction is detected on ªSELF-DIAG [CURRENT]º even
though malfunction is detected by the ªAIR BAGº warning lamp,
go to DIAGNOSTIC PROCEDURE 4, page RS-1040 to diagnose
the following cases:
+Self-diagnostic result ªSELF-DIAG [PAST] (previously stored
in the memory) might not be erased after repair.
+The SRS system malfunctions intermittently.
8. Touch ªPRINTº.
9. Compare diagnostic codes to the CONSULT-II DIAGNOS-
TIC CODE CHART, page RS-1036.
10. Touch ªBACKº key of CONSULT-II until SELECT SYSTEM
appears in order to return to User mode from Diagnosis
mode.
11. Turn ignition switch ªOFFº, then turn of and disconnect CON-
SULT-II and both battery cables.
12. Repair the system as outlined by the ªRepair orderº in CON-
SULT-II DIAGNOSTIC CODE CHART, that corresponds to
the self-diagnostic result. For replacement procedure of com-
ponent parts, refer to RS-1008 and ªRemoval and Installa-
tionº in RS section of Service Manual (Pub. No. SM7E-
2Y61G0 or SM7E-2Y61G1).
13. After repairing the system, go to DIAGNOSTIC PROCE-
DURE 3 for final checking, page RS-1038.
SRS701
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1035

CONSULT-II DIAGNOSTIC CODE CHART (ªSELF-DIAG [CURRENT]º)
Diagnostic item ExplanationRepair order
Recheck SRS at each
replacement.
NO DTC IS DETECTED When malfunction is indicated
by the ªAIR BAGº warning lamp
in User mode+Self-diagnostic result ªSELF-
DIAG [PAST]º (previously
stored in the memory) might
not be erased after repair.
+Intemittent malfunction has
been detected in the past.+Go to DIAGNOSTIC PROCE-
DURE 4 (RS-1040).
+No malfunction is detected.+Go to DIAGNOSTIC PROCE-
DURE 3 (RS-1038).
AIRBAG MODULE
[OPEN]+Driver's air bag module circuit is open. (including the spiral cable) 1. Visually check the wiring har-
ness connection.
2. Replace the harness if it has
visible damage.
3. Replace the spiral cable.
4. Replace driver's air bag mod-
ule.
(Before disposal of it, it must
be deployed.)
5. Replace the diagnosis sensor
unit.
6. Replace the related harness. AIRBAG MODULE
[VB-SHORT]+Driver's air bag module circuit is shorted to some power supply
circuit. (including the spiral 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 har-
ness 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 related 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.
SIDE MODULE LH
[OPEN]+Side air bag module (LH) circuit is open. 1. Visually check the wiring har-
ness connection.
2. Replace the harness if it has
visible damage.
3. Replace side air bag module
(LH).
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor
unit.
5. Replace the related harness. SIDE MODULE LH
[VB-SHORT]+Side air bag module (LH) circuit is shorted to some power supply
circuits.
SIDE MODULE LH
[GND-SHORT]+Side air bag module (LH) circuit is shorted to ground.
SIDE MODULE LH
[SHORT]+Side air bag module (LH) circuits are shorted to each other.
SIDE MODULE RH
[OPEN]+Side air bag module (RH) circuit is open. 1. Visually check the wiring har-
ness connection.
2. Replace the harness if it has
visible damage.
3. Replace side air bag module
(RH).
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor
unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]+Side air bag module (RH) circuit is shorted to some power supply
circuits.
SIDE MODULE RH
[GND-SHORT]+Side air bag module (RH) circuit is shorted to ground.
SIDE MODULE RH
[SHORT]+Side air bag module (RH) circuits are shorted to each other.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1036

Diagnostic item ExplanationRepair order
Recheck SRS at each
replacement.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]+Satellite sensor (LH) 1. Visually check the wiring har-
ness connection.
2. Replace the harness if it has
visible damage.
3. Replace the satellite sensor
(LH).
4. Replace the diagnosis sensor
unit.
5. Replace the related harness.
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]+Satellite sensor (RH) 1. Visually check the wiring har-
ness connection.
2. Replace the harness if it has
visible damage.
3. Replace the satellite sensor
(RH).
4. Replace the diagnosis sensor
unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[OPEN/VB-SHORT]+The circuit for front LH pre-tensioner is open or shorted to some
power supply circuit.1. Visually check the wiring har-
ness connections.
2. Replace the harness if it has
visible damage.
3. Replace front LH seat belt.
(Before disposing, it must be
deactivated.)
4. Replace the diagnosis sensor
unit.
5. Replace the related harness. PRE-TEN FRONT LH
[GND-SHORT]+The circuit for front LH pre-tensioner is shorted to ground.
PRE-TEN FRONT RH
[OPEN/VB-SHORT]+The circuit for front RH pre-tensioner is open or shorted to some
power supply circuit.1. Visually check the wiring har-
ness connections.
2. Replace the harness if it has
visible damage.
3. Replace front RH seat belt.
(Before disposing, it must be
deactivated.)
4. Replace the diagnosis sensor
unit.
5. Replace the related harness. PRE-TEN FRONT RH
[GND-SHORT]+The circuit for front RH pre-tensioner is shorted to ground.
CONTROL UNIT+Low battery voltage (Less than 9V)+Go to DIAGNOSTIC PROCE-
DURE 3 (RS-1038) after
charging battery.
+Diagnosis sensor unit is malfunctioning. 1. Visually check the wiring har-
ness connections.
2. Replace the harness if it has
visible damage.
3. Replace the diagnosis sensor
unit.
4. Replace the air bag 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 malfunction is eliminated, further repair work is not required.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1037

DIAGNOSTIC PROCEDURE 3 (with CONSULT-II)
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.
4. Touch ªSTARTº.
5. Touch ªAIR BAGº.
6. Touch ªSELF-DIAG [CURRENT]º.
7. If no malfunction is detected on ªSELF-DIAG [CURRENT]º,
repair of SRS is completed. Go to step 8.
(When the malfunction was only in seat belt pre-tensioner
system, go to step 11.)
If any malfunction is detected on ªSELF-DIAG [CURRENT]º,
the malfunctioning part is not repaired completely or another
malfunctioning part is detected. Go to DIAGNOSTIC PRO-
CEDURE 2, page RS-1034, and repair malfunctioning part
completely.
SRS468-A
SRS695
SRS771
SRS697
SRS701
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1038