INFINITI QX56 2004 Factory Service Manual

SRS-50
FRONT PASSENGER AIR BAG MODULE
Revision: August 20072004 QX56
FRONT PASSENGER AIR BAG MODULEPFP:K8515
Removal and InstallationEHS000WN
The passenger air bag module originally installed in the vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use tab-locking style harness connectors. If the passenger
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of the service replacement passenger air bag module. Refer to
SRS-51, "
WIRING HARNESS MODIFICATION" for wiring harness modification procedure.
REMOVAL
CAUTION:

Do not attempt to repair or replace damaged direct-connect front passenger air bag module con-
nectors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiring harness modified.

Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.

Always work from the side of or under front passenger air bag module.
1. Remove the glove box. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
2. Remove 2 nuts (through glove box opening) retaining front pas-
senger air bag module to instrument panel crossmember.
3. Disconnect the air bag module electrical connectors.

For removal/installation of the direct-connect SRS connec-
tors, refer to SRS-7, "
Direct-connect SRS Component Con-
nectors" .
4. Remove the instrument panel assembly from the vehicle. Refer
to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
5. Remove front passenger air bag module nuts and remove air
bag module from the instrument panel assembly.
CAUTION:

When servicing the SRS, do not work from directly in front
of air bag module.

Always place front passenger air bag module with caution
label side facing upward.

Do not insert any foreign objects (screwdriver, etc.) into air
bag module or harness connectors.

Do not disassemble air bag module.

Do not use old nuts after removal; replace with new nuts.

Do not expose the front passenger air bag module to tem-
peratures exceeding 90°C (194°F).

Replace the air bag module if it has been dropped or sus-
tained an impact.

Do not allow oil, grease or water to come in contact with the
air bag module.

For removal/installation of the direct-connect SRS connec-
tors, refer to SRS-7, "
Direct-connect SRS Component Con-
nectors" .
INSTALLATION
Original Passenger Air Bag Module
To install, reverse the removal procedure.
WHIA0110E
W H I A 0111 E
SBF 8 14 E

FRONT PASSENGER AIR BAG MODULE
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SRS
Revision: August 20072004 QX56

For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS Com-
ponent Connectors" .
CAUTION:

Always work from the side of or under front passenger air bag module.

After the work is completed, perform self-diagnosis to check that no malfunction is detected.
Refer to SRS-20, "
SRS Operation Check" .
Service Replacement Passenger Air Bag Module
1. Install the front passenger air bag module to the instrument
panel pad assembly.
2. Install the instrument panel assembly. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
3. Connect the front passenger air bag module harness connector to yellow 4-pin service replacement air
bag connector and fasten connector to mounting bracket.
CAUTION:

Always work from the side of or under front passenger air bag module.

After the work is completed, perform self-diagnosis to check that no malfunction is detected.
Refer to SRS-20, "
SRS Operation Check" .
WIRING HARNESS MODIFICATION
The passenger air bag module originally installed in the vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use tab-locking style harness connectors. If the passenger
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of the service replacement passenger air bag module.
NOTE:
The wiring harness modification is to be performed only if the vehicle is equipped with the original passenger
air bag which uses direct-connect harness connectors. If the passenger air bag is to be replaced in a vehicle
that has already had the service replacement passenger air bag installed, the wiring harness modification is
not required.
CAUTION:

Do not attempt to repair or replace damaged direct-connect front passenger air bag module con-
nectors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiring harness modified.

Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.

Always work from the side of or under front passenger air bag module.

After the work is completed, perform self-diagnosis to check that no malfunction is detected.
Refer to SRS-20, "
SRS Operation Check" .
1. Locate the yellow and orange direct-connect passenger air bag module harness connectors.
2. Use wire cutters to cut back both previously used direct-connect passenger air bag module harness con-
nectors from the vehicle wiring harness approximately 50 mm (1.9 in) from the connectors.
3. Remove approximately 150 mm (5.9 in) of the vehicle harness covering from the cut end.
WHIA0110E

SRS-52
FRONT PASSENGER AIR BAG MODULE
Revision: August 20072004 QX56
4. Slide a piece of dual-wall heat shrink tubing (provided in the pas-
senger air bag service kit) onto each wire of the previously used
vehicle wiring harness.
5. Fold each wire back and insert into the end of the heat shrink
tubing so that the end of the wire is approximately centered in
the heat shrink tubing.
6. Use a heat gun to shrink the heat shrink tubing and seal the wire.
7. Use electrical tape to secure the modified circuits to the outside of the wiring harness.
8. Locate the front passenger air bag service replacement connec-
tor that is taped back to the main harness. Unwrap the tape to
access the yellow service replacement connector and remove
the dust cover from the connector.
LHIA0017E
WHIA0062E
WHIA0118E

SIDE CURTAIN AIR BAG MODULE
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SRS
Revision: August 20072004 QX56
SIDE CURTAIN AIR BAG MODULEPFP:985P0
Removal and InstallationEHS0 00 W P
REMOVAL
CAUTION:

Do not attempt to repair or replace damaged direct-connect SRS component connectors. If a
direct-connect harness connector is damaged, the harness must be replaced.

Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.

When servicing the SRS, do not work from directly in front of air bag module.
1. Remove headlining. Refer to EI-37, "
Removal and Installation" .
2. Disconnect front and rear side curtain air bag module connectors.

For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS
Component Connectors" .
3. Remove the bolts in order starting at the front or rear, and remove the side curtain air bag module.
CAUTION:

When servicing the SRS, do not work from directly in front of air bag module.

Do not insert any foreign objects (screwdriver, etc.) into air bag module or harness connectors.

Do not disassemble air bag module.

Do not expose the air bag module to temperatures exceeding 90°C (194°F).

Replace side curtain air bag module if it has been dropped
or sustained an impact.

Do not allow oil, grease or water to come in contact with the
air bag module.
INSTALLATION
To install, reverse the removal procedure.

For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS Com-
ponent Connectors" .
LHIA0079E
SBF 8 14 E

SRS-54
SIDE CURTAIN AIR BAG MODULE
Revision: August 20072004 QX56

After replacement of side curtain air bag module, perform self-diagnosis to check that no malfunction is
detected. Refer to SRS-20, "
SRS Operation Check" .

CRASH ZONE SENSOR
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SRS
Revision: August 20072004 QX56
CRASH ZONE SENSORPFP:98531
Removal and InstallationEHS000WQ
REMOVAL
CAUTION:

Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
1. Open hood.
2. Disconnect the crash zone sensor harness connector.
3. Remove crash zone sensor nuts.
CAUTION:

Replace crash zone sensor if it has been dropped or sustained an impact.

Do not disassemble crash zone sensor.
INSTALLATION
To install, reverse the removal procedure.

After the work is complete, perform self-diagnosis to check that no malfunction is detected. Refer to SRS-
20, "SRS Operation Check" .
LHIA0056E

SRS-56
SIDE AIR BAG (SATELLITE) SENSOR
Revision: August 20072004 QX56
SIDE AIR BAG (SATELLITE) SENSORPFP:98830
Removal and InstallationEHS000WR
REMOVAL
CAUTION:

Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
1. Remove seat belt pre-tensioner. Refer to SB-3, "
Removal and
Installation of Front Seat Belt" .
2. Remove side air bag (satellite) sensor nuts.
3. Disconnect the side air bag (satellite) sensor harness connector.
CAUTION:

Do not use old nuts after removal; replace with new nuts.

Check side air bag (satellite) sensor to ensure it is free of deformities, dents, cracks or rust. If it
shows any visible signs of damage, replace it with new one.

Do not disassemble side air bag (satellite) sensor.

Replace side air bag (satellite) sensor if it has been dropped or sustained an impact.
INSTALLATION
To install, reverse the removal procedure.

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-20, "
SRS Operation Check" .
LHIA0057E

FRONT SEAT BELT PRE-TENSIONER
SRS-57
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SRS
Revision: August 20072004 QX56
FRONT SEAT BELT PRE-TENSIONERPFP:86884
Removal and Installation EHS0 00 W S
For removal and installation procedures, refer to SB-3, "Removal and Installation of Front Seat Belt" .

SRS-58
DIAGNOSIS SENSOR UNIT
Revision: August 20072004 QX56
DIAGNOSIS SENSOR UNITPFP:28556
Removal and InstallationEHS0 00 W T
REMOVAL
CAUTION:

Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
1. Disconnect the harness connectors for each air bag module and seat belt pre-tensioner.
2. Remove center console. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
3. Disconnect diagnosis sensor unit harness connectors.
4. Remove fixing bolts from the diagnosis sensor unit.
CAUTION:

Do not use old bolts; replace with new bolts.

Check diagnosis sensor unit bracket to ensure it is free of deformities, dents, cracks or rust. If it
shows any visible signs of damage, replace with new one.

Replace diagnosis sensor unit if it has been dropped or sustained an impact.
INSTALLATION
To install, reverse the removal procedure.

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-20, "
SRS Operation Check" .
CAUTION:

The diagnosis sensor unit must always be installed with the arrow mark "⇐" pointing toward the
front of the vehicle for proper operation.
ECU DISCRIMINATED NO.
After replacing the diagnosis sensor unit, confirm that the diagnosis sensor unit identification is correct for the
vehicle as equipped. Refer to SRS-18, "
CONSULT-II Function (AIR BAG)" .
LHIA0053E

OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT
SRS-59
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SRS
Revision: August 20072004 QX56
OCCUPANT CLASSIFICATION SYSTEM CONTROL UNITPFP:98852
Removal and InstallationEHS000WU
The occupant classification control unit, occupant classification (pressure) sensor, and bladder are an integral
part of the front passenger seat cushion and are replaced as an assembly. Refer to SE-99, "
REMOVAL" to
remove the seat, and SE-101, "
SEAT CUSHION TRIM AND PAD" to replace the seat cushion.