2007 INFINITI QX56 sensor

SRS-6
< SERVICE INFORMATION >
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Seat Belt Pre-tensioner with Load Limiter
INFOID:0000000003532858
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.
Occupant Classification System (OCS)INFOID:0000000003532859
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).
Passenger Air Bag Status Conditions
NOTE:
Passenger does not meet Occupant Classification System specifications for passenger air bag activation.
Direct-connect SRS Component ConnectorsINFOID:0000000003532860
The following SRS components use direct-connect style harness connectors.
• Driver air bag module
• Front passenger air bag module
• LH side front curtain air bag module
• LH side rear curtain air bag module
• RH side front curtain air bag module
• RH side rear curtain air bag module
• Front LH seat belt pre-tensioner
• Front RH seat belt pre-tensioner
• Seat belt buckle pre-tensioner assembly LH
WHIA0324E
Front Passenger Seat
(Condition)PASS AIR BAG OFF Indicator
(Status)Passenger Air Bag Status
(Readiness)CONSULT-II Display
Seat occupied OFF Active (enabled) ON
Seat occupied
NOTEON Deactivated (disabled) OFF
Seat empty OFF Deactivated (disabled) OFF
WHIA0187E

SRS-10
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SRS Component Parts Location
INFOID:0000000003532862
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-tension-
er6. Seat belt buckle pre-tensioner assembly
RH
7. Occupant classification system sen-
sor8. Occupant classification system
control unit9. 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 module 15. 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
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
CONSULT-II Function
INFOID:0000000003532866
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 requiring
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 RECORDWith 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 discriminated
number assigned is F649.
PASSENGER AIR BAGThe 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, "
Oc-
cupant Classification System (OCS)" for more in-
formation.
ARS366
WHIA0290E
SRS803

TROUBLE DIAGNOSIS
SRS-21
< SERVICE INFORMATION >
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SRS
N
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Warning lamp examples
Trouble Diagnosis with CONSULT-IIINFOID:0000000003532869
DIAGNOSTIC PROCEDURE 2
Refer to GI-36, "CONSULT-II Start Procedure" .
“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-21, "
Trouble Diagnosis
with CONSULT-II" with CONSULT-
II or SRS-28, "
Trouble Diagnosis
without CONSULT-II" without CON-
SULT-II.
• Air bag is deployed.
• Seat belt pre-tensioner is deployed.
• Seat belt buckle pre-tensioner as-
sembly is deployed.Go to SRS-49
.
• 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-32, "
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-33, "
Trouble Diagnosis:
"AIR BAG" Warning Lamp Does Not
Turn On" .
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E

SRS-22
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Diagnostic code is displayed on "SELF-DIAG [CURRENT]".
If no malfunction is detected on "SELF-DIAG [CURRENT]", but mal-
function is detected in "SRS Operation Check", the following cases
may exist:
• "SELF-DIAG [PAST]" memory might not be erased.
• The SRS system malfunctions intermittently.
Refer to "DIAGNOSTIC PROCEDURE 4".
CONSULT-II Diagnostic Code Chart
WHIA0151E
SRS701
Diagnostic item ExplanationRepair order
Recheck SRS at each replacement
NO DTC IS DETECTEDMalfunction is indicat-
ed by the “AIR BAG”
warning lamp in User
mode.Low battery voltage (Less than 9V) 1. Go to SC-4
.
2. Go to "DIAGNOSTIC PROCE-
DURE 3" .
“SELF-DIAG [PAST]” memory might
not be erased.Go to "DIAGNOSTIC PROCEDURE 4"
.
Intermittent malfunction has been
detected in the past.Go to "DIAGNOSTIC PROCEDURE 5"
.
No malfunction is detected in User mode. —
DRIVER AIRBAG MODULE
[OPEN]
[B1049] or [B1054]Driver air bag module circuit is open (including the spiral ca-
ble).1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis
sensor unit.
6. Replace the related harness. DRIVER AIRBAG MODULE
[VB-SHORT]
[B1050] or [B1055]Driver air bag module circuit is shorted to some power supply
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.

TROUBLE DIAGNOSIS
SRS-23
< SERVICE INFORMATION >
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SRS
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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 visi-
ble damage.
3. Replace front passenger air bag
module.
4. Replace the air bag diagnosis
sensor 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 visi-
ble damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis
sensor 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 visi-
ble damage.
3. Replace front LH seat back as-
sembly (front LH side air bag
module).
4. Replace the air bag diagnosis
sensor 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 oth-
er.
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 visi-
ble damage.
3. Replace front RH seat back as-
sembly (front RH side air bag
module).
4. Replace the air bag diagnosis
sensor 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 oth-
er.
SATELLITE SENS LH
[UNIT FAIL]
[ B 111 8 ] o r [ B 111 9 ]
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 visi-
ble damage.
3. Replace the LH side air bag (sat-
ellite) sensor.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

SRS-24
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SATELLITE SENS RH
[UNIT FAIL]
[B1113] or [B1114]
SATELLITE SENS RH
[COMM FAIL]
[ B 111 5 ]RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace the RH side air bag (sat-
ellite) sensor.
4. Replace the air bag diagnosis
sensor 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 visi-
ble damage.
3. Replace front LH seat belt pre-
tensioner.
4. Replace the air bag diagnosis
sensor 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 visi-
ble damage.
3. Replace front RH seat belt pre-
tensioner.
4. Replace the air bag diagnosis
sensor 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 short-
ed 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 visi-
ble damage.
3. Replace front LH seat belt buckle
pre-tensioner.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. PRE-TEN2 FRONT LH
[VB-SHORT]
[B1183]The circuit for front LH seat belt buckle pre-tensioner is short-
ed to some power supply circuit.
PRE-TEN2 FRONT LH
[GND-SHORT]
[B1184]The circuit for front LH seat belt buckle pre-tensioner is short-
ed to ground.
PRE-TEN2 FRONT LH
[SHORT]
[B1185]The circuits for the front LH seat belt buckle pre-tensioner are
shorted to each other.
PRE-TEN2 FRONT RH
[OPEN]
[B1177]The circuit for front RH seat belt buckle pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front RH seat belt buckle
pre-tensioner.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. PRE-TEN2 FRONT RH
[VB-SHORT]
[B1178]The circuit for front RH seat belt buckle pre-tensioner is short-
ed to some power supply circuit.
PRE-TEN2 FRONT RH
[GND-SHORT]
[B1179]The circuit for front RH seat belt buckle pre-tensioner is short-
ed to ground.
PRE-TEN2 FRONT RH
[SHORT]
[B1180]The circuits for the front RH seat belt buckle pre-tensioner are
shorted to each other. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

TROUBLE DIAGNOSIS
SRS-25
< SERVICE INFORMATION >
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SRS
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FR CURTN MODULE LH
[OPEN]
[B1198]The LH side front curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace LH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. FR CURTN MODULE LH
[VB-SHORT]
[B1199]The LH side front curtain air bag module circuit is shorted to
some power supply circuits.
FR CURTN MODULE LH
[GND-SHORT]
[B1200]The LH side front curtain air bag module circuit is shorted to
ground.
FR CURTN MODULE LH
[SHORT]
[B1201]The circuits for the LH side front curtain air bag module are
shorted to each other.
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 visi-
ble damage.
3. Replace RH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor 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 visi-
ble damage.
3. Replace LH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor 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 visi-
ble damage.
3. Replace RH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor 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
sensor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017], [B1020] or [B1021]Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system
control unit assembly. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement