sensor INFINITI FX35 2007 Service Manual

SRS-2Revision: 2006 July 2007 FX35/FX45
SIDE AIR BAG (SATELLITE) SENSOR ................
... 51
Removal and Installation ..................................... ... 51
REMOVAL ........................................................ ... 51
INSTALLATION ................................................. ... 51
FRONT SEAT BELT PRE-TENSIONER ................ ... 52
Removal and Installation ..................................... ... 52
DIAGNOSIS SENSOR UNIT .................................. ... 53
Removal and Installation ..................................... ... 53
REMOVAL ........................................................ ... 53
INSTALLATION ................................................. ... 53
ECU DISCRIMINATED NO. .............................. ... 53
OCCUPANT CLASSIFICATION SYSTEM CON- TROL UNIT .............................................................
... 54
Removal and Installation ...................................... ... 54
COLLISION DIAGNOSIS ....................................... ... 55
For Frontal Collision ............................................. ... 55
SRS INSPECTION (FOR FRONTAL COLLI-
SION) ................................................................ ... 55
For Side Collision ................................................. ... 57
WHEN THE SIDE AIR BAG IS ACTIVATED IN
THE SIDE COLLISION: .................................... ... 57
WHEN SRS IS NOT ACTIVATED IN THE SIDE
COLLISION: ...................................................... ... 57
SRS INSPECTION (FOR SIDE COLLISION) ... ... 57

PRECAUTIONS SRS-3
C
D E
F
G
I
J
K L
M A
B
SRS
Revision: 2006 July 2007 FX35/FX45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NHS00073
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” ServiceNHS00074

Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.

Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.

Diagnosis sensor unit must always be installed with their arrow marks “ ⇐” pointing towards the front of the
vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before instal-
lation and replace as required.

The spiral cable must be aligned with the neutral position since its rotations are limited. Do not turn steer-
ing wheel and column after removal of steering gear.

Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad
side facing upward and seat mounted front side air bag module standing with the stud bolt side facing
down.

Conduct self-diagnosis to check entire SRS for proper function after replacing any components.

After air bag inflates, the front instrument panel assembly should be replaced if damaged.

Always replace instrument panel pad following front passenger air bag deployment.

Disposal, recycling, and transportation of air bag modules and seat belt pre-tensioners should be per-
formed in compliance with applicable federal, state and local laws and regulations.
Occupant Classification System PrecautionNHS0009N
Replace occupant classification system control unit and passenger front seat cushion as an assembly.
Refer to Refer to Service Manual .

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) SRS-5
C
D E
F
G
I
J
K L
M A
B
SRS
Revision: 2006 July 2007 FX35/FX45
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)PFP:28556
SRS ConfigurationNHS00076
The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in the ON or START posi-
tion.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module and front passenger air bag module are activated in a frontal col-
lision but not in a side collision.
SRS configurations which are activated for some collision modes are as follows:
PHIA1120E
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module ×——
Front passenger air bag module ×——
Front LH seat belt pre-tensioner ×——
Front RH seat belt pre-tensioner ×——
Front LH side air bag module — ×—
Front RH side air bag module — — ×
LH side curtain air bag module — ×—
RH side curtain air bag module — — ×

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) SRS-7
C
D E
F
G
I
J
K L
M A
B
SRS
Revision: 2006 July 2007 FX35/FX45
Occupant Classification System (OCS)NHS0009O
The occupant classification system identifies different size occupants, out of position occupants, and detects if
child seat is present in the front passenger seat. The occupant classification system receives inputs from the
occupant classification sensor (located inside the passenger seat cushion assembly) and belt tension sensor
(part of the passenger front seat belt assembly and located at the belt anchor location). Depending on classifi-
cation of passenger, the occupant classification system sends a signal to the diagnosis sensor unit. The diag-
nosis sensor unit uses this signal to determine full, partial, or non deployment of passenger front air bag in the
event of a collision. Depending on the signal received, the diagnosis sensor unit can disable the passenger
front air bag completely.
NOTE:
In case of customer concern, CONSULT-ll can be used to confirm the passenger air bag status (readiness).
Passenger Air Bag Status Condition NHS0009P
NOTE:
Passenger does not meet Ocuupant classification System specifications for passenger air bag activation.
Component Parts of Occupant Classification System NHS0009Q
Passenger Seatbelt Warning System NHS0009W
SYSTEM DESCRIPTION
This system warns when passenger seatbelt is not fasten.
This system is composed of the following items.

Seatbelt warning lamp.

Seatbelt buckle switch (passenger side).

Air bag diagnosis sensor unit.

Occupant classification system.
Seatbelt warning lamp is used for both driver seatbelt warning and passenger seatbelt warning.
Seatbelt warning lamp turns ON when all conditions below are met.

Driver seatbelt is fastened.

Occupant is on passenger seat.

Passenger seatbelt is not fasten.
Front Passenger Seat (Condition) PASS AIR BAG OFF Indicator
(Status) Passenger Air Bag Status
(Readiness) CONSULT-ll Display
Seat occupied OFF Active (enabled) ON
seat occupiedNOTE ON Deactivated (disabled) OFF
Seat empty OFF Deactivated (disabled) OFF
PHIA1334E
1. Occupant classification system con-
trol unit 2.
Occupant classification system sen-
sor 3. Bladder
4. Front passenger air bag OFF indica-
tor (Cutoff telltaile)

SRS-10
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Component Parts LocationNHS0007B
PHIA1352E
1. Driver air bag module 2. Front passenger air bag module 3. Spiral cable
4. Front side air bag module (LH/RH) 5. Diagnosis sensor unit 6. Side air bag (Satellite) sensor (LH/
RH)
7. Seat belt pre-tensioner (LH/RH) 8. Seat belt buckle switch (LH/RH) 9. Side curtain air bag module
10. Crash zone sensor 11. Occupant classification system sen-
sor 12.
Occupant classification system con-
trol unit
13. Belt tension sensor (passenger
side)

SRS-18
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
CONSULT-II FunctionNHS0007E
DIAGNOSIS MODE FOR CONSULT-II

“SELF-DIAG [CURRENT]”
A current self-diagnostic results (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 are not erased 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 diagnosis sensor unit for each vehicle model is assigned
with its own, individual classification number. This number will
be displayed on the CONSULT-II screen, as shown. When
replacing the 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 CONSULT-II screen.
After repair, make sure the discriminated number of diagnosis
sensor unit installed to vehicle are same. Refer to SRS-53,
"ECU DISCRIMINATED NO." .
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, then diagnosis mode automatically changes to User mode.
PHIA0218E
SRS803
SRS804

TROUBLE DIAGNOSIS SRS-21
C
D E
F
G
I
J
K L
M A
B
SRS
Revision: 2006 July 2007 FX35/FX45
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-29,
"DIAGNOSTIC PROCEDURE 5" .

Air bag is deployed.

Seat belt pre-tensioner is deployed. Go to
SRS-55, "
COLLISION DIAG-
NOSIS" .

Diagnosis sensor unit is malfunction-
ing.

Air bag power supply circuit is mal-
functioning.

SRS air bag warning lamp circuit is
malfunctioning. Go to
SRS-39, "
Trouble Diagnosis:
“AIR BAG” Warning Lamp Does Not
Turn OFF" .

Diagnosis sensor unit is malfunction-
ing.

Air bag warning lamp circuit is mal-
functioning. Go to
SRS-40, "
Trouble Diagnosis:
“AIR BAG” Warning Lamp Does Not
Turn ON" .
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E

TROUBLE DIAGNOSIS SRS-23
C
D E
F
G
I
J
K L
M A
B
SRS
Revision: 2006 July 2007 FX35/FX45
DTC No. Index (“SELF-DIAG [CURRENT]”)
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-27, "DIAGNOSTIC PRO-
CEDURE 3" after charging the bat-
tery.

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-29, "DIAGNOSTIC PRO-
CEDURE 4 (CONTINUED FROM
DIAGNOSTIC PROCEDURE 2)" .

Go to SRS-29, "DIAGNOSTIC PRO-
CEDURE 5" .

No malfunction is detected. —
DRIVER AIR BAG
MODULE
[OPEN]
[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 the driver air bag module.
4. Replace the spiral cable.
5. Replace the diagnosis sensor unit.
6. Replace the related harness.
DRIVER AIR BAG
MODULE
[VB-SHORT]
[B1055]

Driver air bag module circuit is shorted to a power supply circuit
(including the spiral cable).
DRIVER AIR BAG
MODULE
[GND-SHORT]
[B1056]

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

Driver air bag module circuit is shorted between lines.
ASSIST A/B MODULE
[OPEN]
[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 the front passenger air bag module.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
ASSIST A/B MODULE
[VB-SHORT]
[B1071]

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

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

Front passenger air bag module circuit is shorted between lines.
CRASH ZONE SEN
[UNIT FAIL]
[B1033]
[B1034]
CRASH ZONE SEN
[COMM FAIL]
[B1035]
CRASH ZONE SEN
[UNMATCH]
[B1036]

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 diagnosis sensor unit.
5. Replace the related harness.

SRS-24
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
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 the front LH seatback assembly (front LH side air bag
module).
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
SIDE MODULE LH
[VB-SHORT]
[B1135]

Front LH side air bag module circuit is shorted to a power sup-
ply 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 circuit is shorted between lines.
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 the front RH seatback assembly (front RH side air bag
module).
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
SIDE MODULE RH
[VB-SHORT]
[B1130]

Front RH side air bag module circuit is shorted to a power sup-
ply 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 circuit is shorted between lines.
SATELLITE SENS LH
[UNIT FAIL]
[ B 111 8 ]
[ B 111 9 ]
SATELLITE SENS LH
[COMM FAIL]
[B1120]
SATELLITE SENS LH
[UNMATCH]
[B1121]

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 diagnosis sensor unit.
5. Replace the related harness.
SATELLITE SENS RH
[UNIT FAIL]
[ B 111 3 ]
[ B 111 4 ]
SATELLITE SENS RH
[COMM FAIL]
[ B 111 5 ]
SATELLITE SENS RH
[UNMATCH]
[ B 111 6 ]

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 diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[OPEN]
[B1086]

Front LH pre-tensioner circuit is open.
1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace the front LH seat belt.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[VB-SHORT]
[B1087]

Front LH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT LH
[GND-SHORT]
[B1088]

Front LH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT LH
[SHORT]
[B1089]

Front LH pre-tensioner circuit is shorted between lines.
Diagnostic item Explanation
Repair order
“Recheck SRS at each replacement”

TROUBLE DIAGNOSIS SRS-25
C
D E
F
G
I
J
K L
M A
B
SRS
Revision: 2006 July 2007 FX35/FX45
PRE-TEN FRONT RH
[OPEN]
[B1081]
Front RH pre-tensioner circuit is open.
1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. Replace the front RH seat belt.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN FRONT RH
[VB-SHORT]
[B1082]

Front RH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT RH
[GND-SHORT]
[B1083]

Front RH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT RH
[SHORT]
[B1084]

Front RH pre-tensioner circuit is shorted between lines.
CURTAIN MODULE LH
[OPEN]
[B1150]

LH side 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 the LH side curtain air bag module.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
CURTAIN MODULE LH
[VB-SHORT]
[B1151]

LH side curtain air bag module circuit is shorted to a power sup-
ply circuit.
CURTAIN MODULE LH
[GND-SHORT]
[B1152]

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

LH side curtain air bag module circuit is shorted between lines.
CURTAIN MODULE RH
[OPEN]
[B1145]

RH side 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 the RH side curtain air bag module.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
CURTAIN MODULE RH
[VB-SHORT]
[B1146]

RH side curtain air bag module circuit is shorted to a power sup-
ply circuit.
CURTAIN MODULE RH
[GND-SHORT]
[B1147]

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

RH side curtain air bag module circuit is shorted between lines.
CONTROL UNIT
[B1001-B1015]
[B1026-B1031]
[B1042-B1047]
[B1058-B1063]
[B1074-B1079]
[ B 11 0 6 - B 1111 ]
[B1122-B1127]
[B1138-B1143]
[B1202-B1207]

Diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the diagnosis sensor unit.
PASS A/B INDCTR
CKT
[B1023]

Cutoff telltale circuit is open or shorted to grand or the circuits
are shorted each other. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace cutoff telltale.
4. Replace the diagnosis sensor unit.
Diagnostic item Explanation
Repair order
“Recheck SRS at each replacement”