2006 INFINITI QX56 belt

SRS-36
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
FR CURTN MODULE RH
[OPEN]
[B1193]
The RH side front curtain air bag module circuit is open. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace RH side curtain air bag module.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
FR CURTN MODULE RH
[VB-SHORT][B1194]

The RH side front curtain air bag module circuit is shorted
to some power supply circuits.
FR CURTN MODULE RH [GND-SHORT][B1195]

The RH side front curtain air bag module circuit is shorted
to ground.
FR CURTN MODULE RH [SHORT]
[B1196]

The circuits for the RH side front curtain air bag module are
shorted to each other.
CURTAIN MODULE LH [OPEN]
[B1150]

The LH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace LH side curtain air bag module.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
CURTAIN MODULE LH
[VB-SHORT][B1151]

The LH side rear curtain air bag module circuit is shorted to
some power supply circuits.
CURTAIN MODULE LH [GND-SHORT][B1152]

The LH side rear curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE LH [SHORT]
[B1153]

The circuits for the LH side rear curtain air bag module are
shorted to each other.
CURTAIN MODULE RH [OPEN]
[B1145]

The RH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace RH side curtain air bag module.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
CURTAIN MODULE RH
[VB-SHORT][B1146]

The RH side rear curtain air bag module circuit is shorted
to some power supply circuits.
CURTAIN MODULE RH [GND-SHORT]
[B1147]

The RH side rear curtain air bag module circuit is shorted
to ground.
CURTAIN MODULE RH [SHORT][B1148]

The circuits for the RH side rear curtain air bag module are
shorted to each other.
CONTROL UNIT [B1XXX]

Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the air bag diagnosis sen- sor unit.
OCCUPANT SENS C/U [UNIT FAIL]
[B1017] or [B1021]

The OCS control unit is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
OCCUPANT SENS C/U [UNIT FAIL] [B1020]

The OCS control unit is malfunctioning. 1. Replace the harness if it has visible
damage.
2. Replace the RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
3. Replace the RH front seat belt assembly.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-37
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SRS
Revision: November 2009 2006 QX56
OCCUPANT SENS C/U
[COMM FAIL][B1022]

Communication between the OCS control unit and air bag
diagnosis sensor unit is interrupted. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
OCCUPANT SENS [UNIT FAIL]
[B1018]

OCS sensor is malfunctioning. 1. Visually check the wiring harness
connection to the OCS sensor.
2. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
BELT TENSION SENS [UNIT FAIL][B1019]

Belt tension sensor is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace RH front seat belt assem- bly.
4. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
5. Replace the related harness.
PASS A/B INDCTR CKT [B1023]

Front passenger air bag off indicator is malfunctioning. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace front passenger air bag off indicator.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
FRONTAL COLLISION DETECTION[B1209]

Driver and front passenger air bag modules are deployed. 1. Refer to SRS-60, "COLLISION
DIAGNOSIS" .
SIDE COLLISION DETECTION
[B1210]

Side or curtain air bag modules are deployed (with side air
bags only). 1. Refer to SRS-60, "COLLISION
DIAGNOSIS" .
ROLLOVER DETECTION [B1211]

Curtain air bag module and seat belt pre-tensioner are
deployed. 1. Refer to SRS-60, "COLLISION
DIAGNOSIS" .
Diagnostic item Explanation
Repair order
Recheck SRS at each replacement

SRS-44
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn OffEHS0016V
DIAGNOSTIC PROCEDURE 6
1. CHECK CONDITION OF AIR BAG MODULE
Inspect for any deployed air bag modules or seat belt pre-tensioners.
Are any air bag modules or seat belt pre-tensioners deployed?
Yes >> Refer to SRS-60, "COLLISION DIAGNOSIS" .
No >> GO TO 2.
2. CHECK THE AIR BAG FUSE
Check 10A fuse [No. 13, located in the fuse block (J/B)].
Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK AIR BAG FUSE AGAIN
Replace 10A fuse [No. 13, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Repair harness.
No >> Inspection End.
4. CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch “START”.
Is
“AIR BAG” displayed on CONSULT-II?
Yes >> GO TO 5.
No >> Visually inspect the air bag diagnosis sensor unit har- ness connections. If the connections are OK, replace
the air bag diagnosis sensor unit. Refer to SRS-58,
"Removal and Installation" .
5. CHECK HARNESS CONNECTION
Check for loose connections between the combination meter and the air bag diagnosis sensor unit.
OK or NG
OK >> Replace air bag diagnosis sensor unit. Refer to SRS-58, "Removal and Installation" .
NG >> Properly connect the combination meter and air bag diagnosis sensor unit harness connectors. If “AIR BAG” warning lamp still does not turn off, replace the wiring harness.
BCIA0030E

SRS-56
SIDE AIR BAG (SATELLITE) SENSOR
Revision: November 20092006 QX56
SIDE AIR BAG (SATELLITE) SENSORPFP:98830
Removal and InstallationEHS00173
REMOVAL
CAUTION:

Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
1. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
2. Remove seat belt pre-tensioner. Refer to SB-3, "
Removal and
Installation of Front Seat Belt" .
3. Remove side air bag (satellite) sensor nuts.
4. 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 make sure 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
Installation is in the reverse order of removal.

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-20, "
SRS Operation Check" .
LHIA0062E

FRONT SEAT BELT PRE-TENSIONERSRS-57
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SRS
Revision: November 2009 2006 QX56
FRONT SEAT BELT PRE-TENSIONERPFP:86884
Removal and Installation EHS00174
For removal and installation procedures for seat belt and seat belt buckle pre-tensioners, refer to SB-3,
"Removal and Installation of Front Seat Belt" .

SRS-58
DIAGNOSIS SENSOR UNIT
Revision: November 20092006 QX56
DIAGNOSIS SENSOR UNITPFP:28556
Removal and InstallationEHS00175
REMOVAL
CAUTION:

Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
1. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
2. Disconnect the harness connectors for each air bag module and seat belt pre-tensioner.
3. Remove center console. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
4. Disconnect diagnosis sensor unit harness connectors.
5. 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
Installation is in the reverse order of removal.

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)" .
LHIA0063E

SRS-60
COLLISION DIAGNOSIS
Revision: November 20092006 QX56
COLLISION DIAGNOSISPFP:00015
For Frontal CollisionEHS001N3
Check the SRS components using the following table.

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-20, "
SRS Operation Check" .
SRS INSPECTION (FOR FRONTAL COLLISION)
PartSRS is activated SRS is NOT activated
Driver air bag module If the driver air bag has deployed:
REPLACE
Install with new fas-
teners. If the driver air bag has NOT been activated:
1. Remove driver air bag module. Check harness cover and connectors for damage,
terminals for deformities, and harness for binding.
2. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
3. If no damage is found, reinstall with new fasteners.
4. If damaged —REPLACE. Install driver air bag modules with new fasteners.
Front passenger air
bag module If the front passenger
air bag has deployed:
REPLACE
Install with new fas-
teners. If the front passenger air bag has NOT been activated:
1. Remove front passenger air bag module. Check harness cover and connectors for
damage, terminals for deformities, and harness for binding.
2. Install front passenger air bag module into the instrument panel to check fit with the instrument panel.
3. If no damage is found, reinstall with new fasteners.
4. If damaged —REPLACE. Install front passenger air bag modules with new fasten-
ers.
Crash zone sensor If any of the front air bags or seat belt pre-
tensioners* have
been activated:
REPLACE the crash
zone sensor and
bracket with new fas-
teners.
*: Confirm seat belt
pre-tensioner activa-
tion using CONSULT-
II only. If the front air bags or seat belt pre-tensioners have NOT been activated:
1. Remove the crash zone sensor. Check harness connectors for damage, terminals
for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the crash zone sensor and bracket.
3. Install the crash zone sensor to check fit.
4. If no damage is found, reinstall with new fasteners.
5. If damaged —REPLACE the crash zone sensor and bracket with new fasteners.
Seat belt pre-ten-
sioner assemblies
(All applicable loca-
tions: buckle, reel, lap
outer) If either the driver or
passenger seat belt
pre-tensioner* has
been activated:
REPLACE all seat
belt pre-tensioner
assemblies with new
fasteners.
*: Confirm seat belt
pre-tensioner activa-
tion using CONSULT-
II only. If the pre-tensioners have NOT been activated:
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. Check seat belt adjuster for damage.
5. Check for deformities of the center pillar inner.
6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner assembly.
7. If no damage is found, reinstall seat belt pre-tensioner assembly.
8. If damaged —REPLACE. Install the seat belt pre-tensioners with new fasteners.
Diagnosis sensor unit If any of the SRS components have
been activated:
REPLACE the diag-
nosis sensor unit.
Install with new fas-
teners. If none of the SRS components have been activated:
1. Check case for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall with new fasteners.
4. If damaged
—REPLACE. Install diagnosis sensor unit with new fasteners.

COLLISION DIAGNOSISSRS-63
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SRS
Revision: November 2009 2006 QX56
Seat belt pre-ten-
sioner assemblies
(All applicable loca-
tions: buckle, reel, lap
outer)If either the driver or
passenger seat belt
pre-tensioner* has
been activated:
REPLACE all seat
belt pre-tensioner
assemblies with new
fasteners.
*: Confirm seat belt
pre-tensioner activa-
tion using CONSULT-
II only.If the pre-tensioners have NOT been activated:
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. Check seat belt adjuster for damage.
5. Check for deformities of the center pillar inner.
6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner assembly.
7. If no damage is found, reinstall seat belt pre-tensioner assembly.
8. If damaged— REPLACE. Install the seat belt pre-tensioners with new fasteners.
Seat (with front side
air bag) If either the front LH
or front RH side air
bag modules has
been deployed:
REPLACE front seat-
back assembly on the
deployed side.If the front LH or front RH side air bag modules have NOT deployed:
1. Visually check the seat on the collision side.
2. Remove the seat on the collision side and check the following for damage and
deformities.
–Harness, connectors and terminals
–Frame and recliner (for front and rear seat), and also adjuster and slides (for front
seat)
3. If no damage is found, reinstall the seat.
4. If damaged —REPLACE the damaged seat parts using new fasteners. If the front
seat back is damaged, the front seat back assembly must be replaced.
Center inner pillar 1. Check the center inner pillar on the collision side for damage (dents, cracks, deformation). 2. If damaged—REPAIR the center inner pillar.
Trim/headlining 1. Check for visible signs of damage (dents, cracks, deformation) of the interior trim on the collision side. 2. If damaged—REPLACE the damaged trim parts.
Part
SRS is activated SRS is NOT activated