2000 NISSAN PATROL Electronic Repair Manual

5. Malfunctioning part is indicated by the number of flashes
(part
VdorVf). Compare the number of flashes to AIR BAG
WARNING LAMP FLASH CODE CHART, page RS-1045,
and locate malfunctioning part.
6.Turn ignition switch ªOFFº, and disconnect both battery cables.
7. Repair the system as outlined by the ªRepair orderº 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-1008 and ªRemoval and Installa-
tionº in RS section of Service Manual (Pub. No. SM7E-
2Y61G0).
8. After repairing the system, go to DIAGNOSTIC PROCE-
DURE 7, page RS-1048.
AIR BAG WARNING LAMP FLASH CODE CHART (DIAGNOSIS MODE)
+Diagnosis results
(previously stored in
the memory) might
not be erased after
repair.
+Intermittent malfunc-
tion has been
detected in the past.Flash pattern
SRS333
VathroughVbare repeated.
Repair order
+Go to DIAGNOSTIC PROCEDURE 8 (RS-1050).
The driver's air bag
module circuit is mal-
functioning.
(
Vd: 2 flashes)Flash patternSRS334
VathroughVdare repeated.
VdÐ Two flashes indicate
malfunctioning driver's
air bag module circuit.
Repair order (ªRecheck SRS at each replacement.º)
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, it must be deployed.)
5. Replace the diagnosis sensor unit.
6. Replace the related harness.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1045

The diagnosis sensor
unit is malfunctioning.
(
Vd: 7 flashes)Flash pattern
SRS335
VathroughVdare repeated.
VdÐ Seven flashes indicate
malfunctioning diagno-
sis sensor unit.
Repair order (ªRecheck SRS at each replacement.º)
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.
The front passenger air
bag module circuit is
malfunctioning.
(
Vd: 8 flashes)Flash patternSRS336
VathroughVdare repeated.
VdÐ Eight flashes indicate
malfunctioning front
passenger air bag
module circuit.
Repair order (ªRecheck SRS at each replacement.º)
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.
The front side air bag
module (RH) circuit is
malfunctioning.
(
Vf: 1 flash)Flash patternSRS338
VathroughVfare repeated.
VfÐ One flash indicates
malfunctioning side air
bag module (RH) cir-
cuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness 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.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1046

The front side air bag
module (LH) circuit is
malfunctioning.
(
Vf: 2 flashes)Flash patternSRS337
VathroughVfare repeated.
VfÐ Two flashes indicate
malfunctioning side air
bag module (LH) cir-
cuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness 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.
The satellite sensor
(RH) is malfunctioning.
(
Vf: 3 flashes)Flash patternSRS340
VathroughVfare repeated.
VfÐ Three flashes indicate
malfunctioning satellite
sensor (RH) circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness 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.
The satellite sensor
(LH) is malfunctioning.
(
Vf: 4 flashes)Flash patternSRS339-A
VathroughVfare repeated.
VfÐ Four flashes indicate
malfunctioning satellite
sensor (LH) circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness 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.
* Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is eliminated
using the air bag warning lamp (in User mode) 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-1047

DIAGNOSTIC PROCEDURE 7 (without
CONSULT-II)
Final checking after repairing SRS by using ªAIR BAGº
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 ªOFFº to ªONº.
4. ªAIR BAGº warning lamp operates in Diagnosis mode as fol-
lows:
No. ªAIR BAGº warning lamp flash pattern Ð Diagnosis mode Ð SRS condition
1
SRS333
VathroughVbare repeated. No malfunc-
tion is
detected or
repair is com-
pleted.
No further
action is nec-
essary.
2
SRS341
VathroughVdare repeated.
VbÐ Driver and passenger air
bag marker (For identifying
driver and/or passenger air
bag malfunctioning)
VdÐ 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.
3
SRS342-A
VathroughVfare repeated.
Vb,jc,VdÐ Side air bag
marker (For
identifying side
air bag malfunc-
tioning)
VfÐ 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.)
NOTE:
When diagnosis sensor unit is replaced with new one, ªAIR
BAGº warning lamp will operate in User mode. Checking
ªAIR BAGº warning lamp operation in Diagnosis mode is
not required. Go to step 6.
5. If ªAIR BAGº warning lamp operates as shown in No. 1 in
chart above, turn ignition switch ªOFFº to reset from Diagno-
sis mode to User mode and to erase the memory of the mal-
function. Then go to step 6.
If ªAIR BAGº warning lamp operates as shown in No. 2 or No.
3 in chart above, the malfunctioning part is not repaired
SRS465
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1048

completely, or another malfunctioning part is detected. Go to
DIAGNOSTIC PROCEDURE 6, page RS-1044, and repair
malfunctioning part completely.
6. Turn ignition switch ªONº. ªAIR BAGº warning lamp operates
in User mode. Compare ªAIR BAGº 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
ªOFFº to ªONº. Then press driver's door switch at least 5
times within 7 seconds after turning ignition switch ªONº.
SRS is now in User mode.
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).
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1049

DIAGNOSTIC PROCEDURE 8 (Continued from
DIAGNOSTIC PROCEDURE 3) (
without
CONSULT-II)
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 7, step 5 (RS-
1048).
GO TO DIAGNOSTIC PROCEDURE 5
(RS-1040).Further inspection cannot be
performed without CONSULT-II.
Trouble Diagnoses for Air Bag Warning
Lamp
DIAGNOSTIC PROCEDURE 9
SYMPTOM:ªAIR BAGº 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-1052).
Is SRS ªAIR BAGº fuse OK?
Yes
cNo
Replace fuse and turn igni-
tion switch ON. If SRS ªAIR
BAGº fuse is blown again,
repair related harness.
Connect CONSULT-II and touch
ªSTARTº.
+Is ªAIRBAGº displayed on
CONSULT-II?
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.
SRS307
SRS771
.
.
.
.
.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Self-diagnosis (Cont'd)
RS-1050

DIAGNOSTIC PROCEDURE 10
SYMPTOM: ªAIR BAGº warning lamp does not turn on.
Is warning lamp fuse OK?
YescNo
Replace fuse and turn igni-
tion switch ON. If meter
fuse is blown again, repair
related harness.
Is warning lamp LED OK?
YescNo
Replace warning lamp
LED.
1. Disconnect diagnosis sensor unit con-
nector.
2. Turn the ignition key to ON position.
+Does 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.
DIAGNOSTIC PROCEDURE 11
SYMPTOM: SRS does not enter Diagnostic mode.
Disconnect both battery cables and check
battery voltage using circuit tester.
+Is battery voltage more than 9V?
Yes
cNo
Charge battery.
Remove driver's door switch and check
continuity between driver's door switch
connector terminals
V1andV3under the
following conditions.
Yes
cNo
Replace driver's door
switch.
Check harness continuity between driver's
door switch connector terminal
V3and
body ground.
+Does continuity exist?
Yes
cNo
Replace or repair harness.
Replace diagnosis sensor unit.
Go to DIAGNOSTIC PROCEDURE 1 (RS-
1032).
Condition Continuity
Door switch is depressed
(Door is closed).NO
Door switch is released (Door
is open).YES
SRS469
SRS058
SRS470
SRS265-D
.
.
.
.
.
.
.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses for Air Bag Warning
Lamp (Cont'd)
RS-1051

FOR FRONTAL COLLISION
To repair the SRS for a frontal collision, perform the following steps.
When SRS (except the side air bag) is activated in a collision:
V1Replace the diagnosis sensor unit.
V2Remove the air bag modules (except the side air bag module) and seat belt pre-tensioner assemblies.
V3Check the SRS components using the table shown below:
+Replace any SRS components showing visible signs of damage (dents, cracks, deformation).
V4Install new air bag modules (except the side air bag module) and seat belt pre-tensioner assemblies.
V5Conduct self-diagnosis using CONSULT-II, and ªAIR BAGº and ªSEAT BELTº warning lamps (Models
except for Europe). Refer to ªSelf-diagnosisº for details (RS-1032). Ensure entire SRS operates prop-
erly.
When SRS is not activated in a collision:
V1Check the SRS components using the table shown below:
+Replace any SRS components showing visible signs of damage (dents, cracks, deformation).
V2Conduct self-diagnosis using CONSULT-II, and ªAIR BAGº and ªSEAT BELTº warning lamps (Models
except for Europe). Refer to ªSelf-diagnosisº for details (RS-1032). Ensure entire SRS operates prop-
erly.
SRS inspection
Part SRS (except the
side air bag) is acti-
vatedSRS is NOT activated
Air bag module
(driver and passen-
ger side)REPLACE
Install air bag mod-
ule with new bolts.1. Remove air bag module. Check harness cover and connectors for damage, ter-
minals for deformities, and harness for binding.
2-1. Install driver air bag module into the steering wheel to check fit and alignment
with the wheel.
2-2. Install passenger air bag module into the instrument panel to check fit with the
instrument panel.
3. No damage found, reinstall with new bolts coated with bonding agent.
4. If damagedÐREPLACE. Air bag must be deployed before discarding.
Seat belt pre-ten-
sioner assemblyREPLACE
Install seat belt pre-
tensioner with new
bolts.1. Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities, and
harness for binding.
2. Check belts for damage and anchors for loose mounting.
3. Check retractor for smooth operation.
4. If no damage is found, reinstall with new bolts coated with bonding agent.
5. If damagedÐREPLACE. Install the seat belt pre-tensioners with new bolts coated
with bonding agent. Seat belt pre-tensioners must be deployed before discarding.
Diagnosis sensor
unitREPLACE
Install diagnosis sen-
sor unit with new
bolts.1. Check case and bracket for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall with new bolts.
4. If damagedÐREPLACE. Install diagnosis sensor unit with new bolts coated with
bonding agent.
Steering wheel 1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
3. Install air bag module to check fit or alignment with steering wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall the steering wheel.
6. If damagedÐREPLACE.
Spiral cable 1. Visually check spiral cable and combination switch for damage.
2. Check connectors, flat cable and protective tape for damage.
3. Check steering wheel for noise, binding or heavy operation.
4. If no damage is found, reinstall the spiral cable.
5. If damagedÐREPLACE.
Harness and Con-
nectors1. Check connectors for poor connection, damage, and terminals for deformities.
2. Check harness for binding, chafing, cuts, or deformities.
3. If no damage is found, reinstall harness and connectors.
4. DamagedÐREPLACE damaged section of harness. Do not attempt to repair, splice or modify any SRS
harness.
Instrument panel Refer to the table on next page.
COLLISION DIAGNOSIS
RS-1052