2006 INFINITI QX56 sensor

SRS-6
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Revision: November 20092006 QX56
Front Seat Belt Pre-tensioner with Load LimiterEHS0016H
The seat belt pre-tensioner system with load limiter is installed for
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
Front Side Air BagEHS0016I
Front side air bag modules are built into the front seatback assemblies.
Vehicles with side air bags are equipped with labels as shown.
Side Curtain Air BagEHS0016J
Side curtain air bag modules are located above the vehicle headlining.
Vehicles with side curtain air bags are equipped with labels as
shown.
Occupant Classification System (OCS) EHS001MY
The occupant classification system (OCS) identifies different size occupants, out of position occupants, and
detects if child seat is present in the front passenger seat. The OCS receives inputs from the occupant classi-
fication sensor (located inside the passenger seat cushion assembly) and belt tension sensor (part of the pas-
senger front seat belt assembly and located at the belt anchor location). Depending on classification of the
passenger, the OCS sends a signal to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit
uses this signal and the seat belt buckle switch RH signal to determine deployment or non deployment of the
passenger front air bag in the event of a collision. Depending on the signals received, the air bag diagnosis
sensor unit can disable the passenger front air bag completely.
NOTE:
In case of customer concern, CONSULT-II can be used to confirm the passenger air bag status (readiness).
SRS444
WHIA0008E
WHIA0041E

SRS-10
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
SRS Components Parts LocationEHS0016N
1. Side curtain air bag modules 2. Front RH side air bag module 3. Belt tension sensor
4. RH side air bag (satellite) sensor 5. Front RH seat belt pre-ten-
sioner6. Seat belt buckle pre-tensioner assembly
RH
7. Occupant classification system sen- sor 8. Occupant classification system
control unit 9. Front passenger air bag off indicator
10. Front passenger air bag module 11. Crash zone sensor 12. Air bag warning lamp
13. Spiral cable 14. Driver air bag module15. LH side air bag (satellite) sensor
16. Front LH seat belt pre-tensioner 17. Air bag diagnosis sensor unit 18. Front LH side air bag module
WHIA0216E

SRS-18
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
CONSULT-II Function (AIR BAG)EHS001BA
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II FunctionEHS0016Q
HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II
From User Mode to Diagnosis Mode
After selecting “AIR BAG ” on the “SELECT SYSTEM ” screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears, Diagnosis mode automatically changes to User mode.
AIR BAG diagnostic mode Description
SELF-DIAG [CURRENT] 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 requir-
ing repairs.
SELF-DIAG [PAST] Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The
stored results will remain until memory erasing is executed.
TROUBLE DIAG RECORD With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be dis-
played on the CONSULT-II screen.
ECU DISCRIMINATED NO. The air bag diagnosis sensor unit for each vehicle
model is assigned with its own, individual classifi-
cation number. This number will be displayed on
the CONSULT-II screen, as shown. When replac-
ing the air bag diagnosis sensor unit, refer to the
part number for the compatibility. After installation,
replacement with a correct unit can be checked by
confirming this classification number on the CON-
SULT-II screen.
The air bag diagnosis sensor unit discrimi-
nated number assigned is F62F.
PASSENGER AIR BAG The STATUS (readiness) of the front passenger air
bag module is displayed. The STATUS displayed
(ON/OFF) depends on the signals supplied to the
occupant classification system control module and
air bag diagnosis sensor unit. Refer to
SRS-6,
"Occupant Classification System (OCS)" for more
information.
ARS366
WHIA0290E
SRS803

TROUBLE DIAGNOSISSRS-21
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Revision: November 2009 2006 QX56
Warning lamp examples
“AIR BAG ” warning lamp operation-User mode- SRS condition Reference item

No malfunction is detected.

No further action is necessary. —
The system is malfunctioning and
needs to be repaired as indicated. Go to
SRS-22, "
DIAGNOSTIC
PROCEDURE 2" or SRS-38,
"DIAGNOSTIC PROCEDURE 6" .

Air bag is deployed.

Seat belt pre-tensioner is deployed.

Seat belt buckle pre-tensioner
assembly is deployed. Go to
SRS-60, "
COLLISION DIAG-
NOSIS" .

Air bag diagnosis sensor unit is mal-
functioning.

Air bag power supply circuit is mal-
functioning.

SRS air bag warning lamp circuit is
malfunctioning. Go to
SRS-44, "
Trouble Diagnosis:
“AIR BAG” Warning Lamp Does Not
Turn Off" .

Air bag diagnosis sensor unit is mal-
functioning.

Air bag warning lamp circuit is mal-
functioning. Go to
SRS-45, "
Trouble Diagnosis:
“AIR BAG” Warning Lamp Does Not
Turn On" .
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E

SRS-24
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
ASSIST A/B MODULE
[OPEN]
[B1065] or [B1070]
Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace front passenger air bag module.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
ASSIST A/B MODULE
[VB-SHORT]
[B1066] or [B1071]

Front passenger air bag module circuit is shorted to some
power supply circuit.
ASSIST A/B MODULE [GND-SHORT]
[B1067] or [B1072]

Front passenger air bag module circuit is shorted to
ground.
ASSIST A/B MODULE [SHORT]
[B1068] or [B1073]

Front passenger air bag module circuits are shorted to
each other.
CRASH ZONE SEN [UNIT FAIL]
[B1033] or [B1034]
CRASH ZONE SEN
[COMM FAIL][B1035]

Crash zone sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
SIDE MODULE LH [OPEN]
[B1134]

Front LH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace front LH seat back assem- bly (front LH side air bag module).
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
SIDE MODULE LH
[VB-SHORT]
[B1135]

Front LH side air bag module circuit is shorted to some
power supply circuit.
SIDE MODULE LH [GND-SHORT] [B1136]

Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH [SHORT][B1137]

Front LH side air bag module circuits are shorted to each
other.
SIDE MODULE RH [OPEN]
[B1129]

Front RH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace front RH seat back assem- bly (front RH side air bag module).
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
SIDE MODULE RH
[VB-SHORT][B1130]

Front RH side air bag module circuit is shorted to some
power supply circuit.
SIDE MODULE RH [GND-SHORT] [B1131]

Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH [SHORT]
[B1132]

Front RH side air bag module circuits are shorted to each
other.
SATELLITE SENS LH [UNIT FAIL]
[B1118] or [B1119]
SATELLITE SENS LH [COMM FAIL][B1120]

LH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace the LH side air bag (satel- lite) sensor.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-25
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Revision: November 2009 2006 QX56
SATELLITE SENS RH
[UNIT FAIL]
[ B 111 3 ] o r [ B 111 4 ]
SATELLITE SENS RH [COMM FAIL]
[B1115]

RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace the RH side air bag (satel- lite) sensor.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
PRE-TEN FRONT LH [OPEN]
[B1086]

The circuit for front LH seat belt pre-tensioner is open. 1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace front LH seat belt pre-ten- sioner.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[VB-SHORT][B1087]

The circuit for front LH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT LH [GND-SHORT] [B1088]

The circuit for front LH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT LH [SHORT]
[B1089]

The circuits for the front LH seat belt pre-tensioner are
shorted to each other.
PRE-TEN FRONT RH [OPEN]
[B1081]

The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace front RH seat belt pre-ten- sioner.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
PRE-TEN FRONT RH
[VB-SHORT][B1082]

The circuit for front RH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT RH [GND-SHORT]
[B1083]

The circuit for front RH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT RH [SHORT][B1084]

The circuits for the front RH seat belt pre-tensioner are
shorted to each other.
PRE-TEN2 FRONT LH [OPEN][B1182]

The circuit for front LH seat belt buckle pre-tensioner is
open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible damage.
3. Replace front LH seat belt buckle pre-tensioner.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
PRE-TEN2 FRONT LH
[VB-SHORT]
[B1183]

The circuit for front LH seat belt buckle pre-tensioner is
shorted to some power supply circuit.
PRE-TEN2 FRONT LH [GND-SHORT][B1184]

The circuit for front LH seat belt buckle pre-tensioner is
shorted to ground.
PRE-TEN2 FRONT LH [SHORT][B1185]

The circuits for the front LH seat belt buckle pre-tensioner
are shorted to each other.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-27
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Revision: November 2009 2006 QX56
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.
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.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-33
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SRS
Revision: November 2009 2006 QX56
14. Repair the system as outlined by the “Repair order” in “Intermittent Malfunction Diagnostic Code Chart ”,
that corresponds to the self-diagnostic result. For replacement procedure of component parts, refer to the
Removal and Installation procedure for the appropriate component.
15. Go to SRS-28, "
DIAGNOSTIC PROCEDURE 3" , for final checking.
CONSULT-II Diagnostic Code Chart ("SELF-DIAG [PAST]" or "TROUBLE DIAG RECORD")
Diagnostic item Explanation Repair order
Recheck SRS at each replacement
NO DTC IS DETECTED When malfunction is
indicated by the “
AIR
BAG ” warning lamp in
User mode.

Low battery voltage (Less than
9V)
Go to SRS-28, "DIAGNOSTIC PRO-
CEDURE 3" .

Self-diagnostic result “SELF-DIAG
[PAST] ” (previously stored in the
memory) might not be erased
after repair.

Intermittent malfunction has been
detected in the past.

Go to SRS-31, "DIAGNOSTIC PRO-
CEDURE 4 (CONTINUED FROM
DIAGNOSTIC PROCEDURE 2)" .

Go to SRS-31, "DIAGNOSTIC PRO-
CEDURE 5" .

No malfunction is detected. —
DRIVER AIRBAG MODULE [OPEN]
[B1049] or [B1054]

Driver air bag module circuit is open (including the spiral
cable). 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis sen- sor unit.
6. Replace the related harness.
DRIVER AIRBAG MODULE
[VB-SHORT]
[B1050] or [B1055]

Driver air bag module circuit is shorted to some power sup-
ply circuit (including the spiral cable).
DRIVER AIRBAG MODULE [GND-SHORT]
[B1051] or [B1056]

Driver air bag module circuit is shorted to ground (including
the spiral cable).
DRIVER AIRBAG MODULE [SHORT]
[B1052] or [B1057]

Driver air bag module circuits are shorted to each other.
ASSIST A/B MODULE [OPEN]
[B1065] or [B1070]

Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace front passenger air bag module.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
ASSIST A/B MODULE
[VB-SHORT]
[B1066] or [B1071]

Front passenger air bag module circuit is shorted to some
power supply circuit.
ASSIST A/B MODULE [GND-SHORT]
[B1067] or [B1072]

Front passenger air bag module circuit is shorted to
ground.
ASSIST A/B MODULE [SHORT]
[B1068] or [B1073]

Front passenger air bag module circuits are shorted to
each other.
CRASH ZONE SEN [UNIT FAIL]
[B1033] or [B1034]
CRASH ZONE SEN [COMM FAIL]
[B1035]

Crash zone sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.