2001 INFINITI QX4 tensioner

SRS006-C
4. Connect red clip of deployment tool to battery positive termi-
nal and black clip to negative terminal.
5. The lamp on the right side of the tool, marked ªdeployment tool
powerº, should glow green, not red.
6. Press the button on the deployment tool. The left side lamp on
the tool, marked ªair bag connector voltageº, will illuminate and
the air bag module will deploy.
SBF276H
DISPOSING OF AIR BAG MODULE AND SEAT BELT
PRE-TENSIONER
NBRS0018S04Deployed air bag module and seat belt pre-tensioner are very hot.
Before disposing of air bag module, and seat belt pre-tensioner
wait at least 30 minutes, and 10 minutes, respectively. Seal them
in a plastic bag before disposal.
CAUTION:
INever apply water to a deployed air bag module and seat
belt pre-tensioner.
IBe sure to wear gloves when handling a deployed air bag
module and seat belt pre-tensioner.
INo poisonous gas is produced upon air bag module
deployment. However, be careful not to inhale gas since it
irritates throat and can cause choking.
IDo not attempt to disassemble air bag module and seat
belt pre-tensioner.
IAir bag module and seat belt pre-tensioner cannot be
reused.
IWash your hands clean after finishing work.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Disposal of Air Bag Module and Seat Belt Pre-tensioner (Cont'd)
RS-28

Trouble Diagnoses Introduction=NBRS0040CAUTION:
IDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
IDo not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged,
replace it with a new one.
IKeep ground portion clean.
DIAGNOSIS FUNCTIONNBRS0040S01The SRS self-diagnosis results can be read by using ªAIR BAGº warning lamp and/or CONSULT-II. The read-
ing of these results is accomplished using one of two modes Ð ªUser modeº and ªDiagnosis modeº.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system
malfunction through the operation of the ªAIR BAGº warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the ªAIR BAGº warning lamp and CONSULT-II are as follows:
User mode Diagnosis mode Display type
ªAIR BAGº warning lamp X X ON-OFF operation
CONSULT-II Ð X Monitoring
NOTE:
Seat belt pre-tensioner malfunction is indicated by ªAIR BAGº warning lamp.
DIAGNOSIS MODE FOR CONSULT-IINBRS0040S02IªSELF-DIAG [CURRENT]º
A current Self-diagnosis result (also indicated by the number of warning lamp flashes in the Diagnosis
mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requiring
repairs.
IªSELF-DIAG [PAST]º
Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The stored
results are not erased until memory erasing is executed.
IªTROUBLE DIAG RECORDº
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be displayed
on the CONSULT-II screen.
IªECU DISCRIMINATED NO.º
The diagnosis sensor unit for each vehicle model is assigned with its own, individual classification num-
ber. This number will be displayed on the CONSULT-II screen, as shown below. When replacing the diag-
nosis sensor unit, refer to the part number for the compatibility. After installation, replacement with a cor-
rect unit can be checked by confirming this classification number on the CONSULT-II screen.
SRS851
For INFINITI QX4, the diagnosis sensor unit classification numbers assigned is A540.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses Introduction
RS-29

WORK FLOW=NBRS0041S03NOTE:
Seat belt pre-tensioner malfunction is indicated by ªAIR BAGº warning lamp.
SRS799
*1: RS-32
*2: RS-38*3: RS-39
*4: RS-48*5: RS-42
*6: RS-53
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
How to Perform Trouble Diagnoses for Quick and Accurate Repair (Cont'd)
RS-33

SRS800
SRS Operation CheckNBRS0044DIAGNOSTIC PROCEDURE 1NBRS0044S01Checking Air Bag Operation by Using ªAIR BAGº
Warning Lamp Ð User Mode
NBRS0044S01011. 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 necessary.
Ð
MRS096A
The system is malfunction-
ing and needs to be
repaired as indicated.Go to DIAGNOSTIC PRO-
CEDURE 2 or 6 (RS-39 or
RS-48).
MRS097A
Air bag is deployed.
Seat belt pre-tensioner is
deployed.Go to COLLISION DIAG-
NOSIS (RS-56).
Air bag fuse, diagnosis
sensor unit or harness is
malfunctioning and needs
to be repaired.Go to DIAGNOSTIC PRO-
CEDURE 9 (RS-59).
MRS098A
One of the following has
occurred and needs to be
repaired.
IMeter fuse is blown.
IªAIR BAGº warning
lamp circuit has open or
short.
IDiagnosis sensor unit is
malfunctioning.Go to DIAGNOSTIC PRO-
CEDURE 10 (RS-58).
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-48.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS Operation Check
RS-38

Diagnostic item ExplanationRepair order
ªRecheck SRS at each replace-
ment.º
PRE-TEN FRONT LH
[OPEN/VB-SHORT]IThe circuit for front LH 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 front LH seat belt.
(Before disposing, it must be deacti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[GND-SHORT]IThe circuit for front LH pre-tensioner is shorted to ground.
PRE-TEN FRONT RH
[OPEN/VB-SHORT]IThe circuit for front RH 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 front RH seat belt.
(Before disposing, it must be deacti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[GND-SHORT]IThe circuit for front RH pre-tensioner is shorted to ground.
CONTROL UNITIDiagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the diagnosis sensor unit.
* 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.
SRS844
DIAGNOSTIC PROCEDURE 3NBRS0045S02Final 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.
SRS695
4. Touch ªSTARTº.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-42

Diagnostic item Explanation Repair order
SIDE MODULE LH
[OPEN]ISide air bag module (LH) circuit is open. 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 diagnosis sensor unit and side
air bag module (LH). (Before dis-
posing the side air bag module
(LH), it must be deployed.) SIDE MODULE LH
[VB-SHORT]ISide air bag module (LH) circuit is shorted to some power
supply circuits.
SIDE MODULE LH
[GND-SHORT]ISide air bag module (LH) circuit is shorted to ground.
SIDE MODULE LH
[SHORT]ISide air bag module (LH) circuits are shorted to each other.
SIDE MODULE RH
[OPEN]ISide air bag module (RH) circuit is open. 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 diagnosis sensor unit and side
air bag module (RH). (Before dis-
posing the side air bag module
(RH), it must be deployed.) SIDE MODULE RH
[VB-SHORT]ISide air bag module (RH) circuit is shorted to some power
supply circuits.
SIDE MODULE RH
[GND-SHORT]ISide air bag module (RH) circuit is shorted to ground.
SIDE MODULE RH
[SHORT]ISide air bag module (RH) circuits are shorted to each other.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]ISatellite sensor (LH) 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 diagnosis sensor unit and satel-
lite sensor (LH).
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]ISatellite sensor (RH) 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 diagnosis sensor unit and satel-
lite sensor (RH).
PRE-TEN FRONT LH
[OPEN/VB-SHORT]IThe circuit for front LH 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. If the harness check is OK, replace
the diagnosis sensor unit and front
LH seat belt.
(Before disposing the front LH seat
belt pre-tensioner, it must be
deployed.) PRE-TEN FRONT LH
[GND-SHORT]IThe circuit for front LH pre-tensioner is shorted to ground.
PRE-TEN FRONT RH
[OPEN/VB-SHORT]IThe circuit for front RH 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. If the harness check is OK, replace
the diagnosis sensor unit and front
RH seat belt.
(Before disposing the front RH seat
belt pre-tensioner, it must be
deployed.) PRE-TEN FRONT RH
[GND-SHORT]IThe circuit for front RH pre-tensioner is shorted to ground.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-47

Air Bag Warning Lamp Flash Code Chart (Diagnosis
mode)
NBRS0046S0101
IDiagnosis results (pre-
viously stored in the
memory) might not be
erased after repair.
IIntermittent malfunc-
tion has been detected
in the past.Flash pattern
SRS333
athroughbare
repeated.
Repair order
IGo to DIAGNOSTIC PROCEDURE 8 (RS-55).
The front RH seat belt
pre-tensioner circuit is
malfunctioning.
(d: 1 flash)Flash pattern
SRS801
athroughdare
repeated.
dÐ One flash indicates
malfunctioning front RH
pre-tensioner circuit.
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 front RH seat belt pre-tensioner.
(Before disposing, it must be deactivated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The driver's air bag mod-
ule circuit is malfunction-
ing.
(d: 2 flashes)Flash pattern
SRS334
athroughdare
repeated.
dÐ Two flashes indi-
cate malfunctioning driv-
er's air bag module 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 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.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II (Cont'd)
RS-50

The front LH seat belt
pre-tensioner circuit is
malfunctioning.
(d: 3 flashes)Flash pattern
SRS802
athroughdare
repeated.
dÐ Three flashes indi-
cate malfunctioning front
LH pre-tensioner circuit.
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 front LH seat belt pre-tensioner.
(Before disposing, it must be deactivated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The diagnosis sensor
unit is malfunctioning.
(d: 7 flashes)Flash pattern
SRS335
athroughdare
repeated.
dÐ Seven flashes indi-
cate malfunctioning diag-
nosis 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.
(d: 8 flashes)Flash pattern
SRS336
athroughdare
repeated.
dÐ Eight flashes indi-
cate malfunctioning front
passenger air bag mod-
ule 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.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II (Cont'd)
RS-51