2008 INFINITI FX35 ignition

SRS-36
< SERVICE INFORMATION >
SPIRAL CABLE
SPIRAL CABLE
Removal and InstallationINFOID:0000000001327765
WARNING:
 Before servicing SRS, turn ignition switch OFF, disconnect both ba ttery cables and wait at least 3
minutes.
 Do not use air tools or el ectric tools for servicing.
REMOVAL
1. Remove driver air bag module. Refer to SRS-34, "Removal and Installation".
2. Disconnect steering switch harness connector.
3. Set the steering wheel in the neutral position.
4. Removal steering wheel. Refer to PS-10, "
Removal and Installation".
5. Remove steering column covers. Refer to IP-11, "
Removal and Installation".
6. Loosen the spiral cable fixing screws, and then remove the spiral cable. CAUTION:
 Do not disassemble spiral cable.
 Do not apply lubricant to the spiral cable.
 Do not make an impact to the spiral cable by dro pping etc. Replace the spiral cable if it has been
dropped or sustained an impact.
7. Disconnect the horn switch connec tor, and then the spiral cable
connector.
CAUTION:
 Do not tap or bump the steering wheel.
 Also, with the steering li nkage disconnected the cable
may snap by turning the st eering wheel beyond the lim-
ited number of turns.
8. Remove the wiper washer switch and lighting switch from the spiralcable.
INSTALLATION
Install in the reverse order of removal.
PHIA1336E
1. Steering wheel 2. Spiral cable 3. Driver air bag module connector
4. Screw 5. Wiper and washer switch 6. Lighting and turn signal switch
7. Steering column assembly 8. Steering column cover (upper) 9. Steering column cover (lower)
SHIA0193E
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SRS-38
< SERVICE INFORMATION >
FRONT PASSENGER AIR BAG MODULE
FRONT PASSENGER AIR BAG MODULE
Removal and InstallationINFOID:0000000001327766
WARNING:
 Before servicing SRS, turn ignition switch OFF, disconnect both ba ttery cables and wait at least 3
minutes.
 Always work from the side of or under front passenger air bag module.
 Do not use air tools or el ectric tools for servicing.
REMOVAL
1. Disconnect front passenger air bag module connector (1).
2. Remove glove box assembly and instrument passenger lower panel. Refer to IP-11, "
Removal and Instal-
lation".
3. Remove display control unit, if navigation system is equipped.
4. Remove tire pressure warning control unit, if tire pressure warning control system is equipped.
5. Remove the front passenger air bag module fixing bolt and nuts, and then remove front passenger air bag module.
CAUTION:
 Always place front passenger air bag module with caution label side facing upward.
 Do not insert any foreign objects (screwdriver, etc.) into front
passenger air bag module.
 Do not disassemble front passenger air bag module.
 Do not use old bolt after removal; replace with new bolt.
PHIA1337E
PHIA0322E
PHIA0325E
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SRS-40
< SERVICE INFORMATION >
SIDE CURTAIN AIR BAG MODULE
SIDE CURTAIN AIR BAG MODULE
Removal and InstallationINFOID:0000000001327767
WARNING:
 Before servicing SRS, turn ignition switch OFF, disconnect both ba ttery cables and wait at least 3
minutes.
 Always work from the side of th e side curtain air bag module.
 Do not use air tools or el ectric tools for servicing.
REMOVAL
1. Remove headlining. Refer to EI-43, "Component Parts Location".
2. Disconnect side curtain air bag connector. NOTE:
 For installing / removing side curtain air bag module connec-
tor, insert thin screwdriver wrapped in tape into notch, lift lock
and remove connector.
 Install connector with lock raised, and push lock into connec- tor.
 After installing the connector, make sure that the lock is
pushed securely into it.
3. Remove side curtain air bag module fixing bolts, and then remove the side curtain air bag module.
CAUTION:
 Always place the side curtain ai r bag module with the warning
label facing upward.
 Do not disassemble side cu rtain air bag module.
 Do not insert any foreign object s (screwdriver, etc.) into air
bag module connector.
1. Side curtain air bag Inflator 2. Side curtain air bag 3. Bolt
4. Assist grip bracket 5. Bolt (There is no torque control)
PHIA0656E
PHIA0953J
PHIA0317E
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SRS-42
< SERVICE INFORMATION >
CRASH ZONE SENSOR
CRASH ZONE SENSOR
Removal and InstallationINFOID:0000000001327768
WARNING:
 Before servicing SRS, turn ignition switch OFF, disconnect both ba ttery cables and wait at least 3
minutes.
 Do not use air tools or el ectric tools for servicing.
REMOVAL
1. Remove front grille. Refer to EI-22, "Component Parts Location".
2. Remove crash zone sensor connector.
3. Remove crash zone sensor fixing nuts.
CAUTION:
 Replace crash zone sensor if it has b een dropped or sustained an impact.
 Do not disassemble crash zone sensor.
 Do not use old fixing nuts afte r removal; replace with new nuts.
 Replace the crash zone sensor of deployed SRS dr iver air bag and deployed SRS front passenger air
bag.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
 Be careful not to damage the crash zone sensor harness.
 After the work is completed, make sure no system malfunction is detected by air bag warning lamp.
 In case that malfunction is detected by the air ba g warning lamp, reset by the self-diagnosis function
and delete the memory by CONSULT −III.
 In case that malfunction is still de tected after the above operation, perform self-diagnosis to repair
malfunctions. Refer to SRS-23, "
SRS Operation Check".
PHIA0316E
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SRS-44
< SERVICE INFORMATION >
DIAGNOSIS SENSOR UNIT
DIAGNOSIS SENSOR UNIT
Removal and InstallationINFOID:0000000001327771
WARNING:
 Before servicing SRS, turn ignition switch OFF, disconnect both ba ttery cables and wait at least 3
minutes.
 Do not use air tools or el ectric tools for servicing.
REMOVAL
1. Disconnect each harness connector for the ai r bag module and seat belt pre-tensioner.
2. Remove center console. Refer to IP-11, "
Removal and Installation".
3. Disconnect diagnosis sensor unit connector.
4. Remove TORX bolts from the diagnosis sensor unit.
CAUTION:
 Do not use old TORX bolts. Replace with new ones.
 Check diagnosis sensor unit bracket to ensure it is free of deformities, dents, cracks or rust. If it
shows any visible things of damage, replace with new one.
 Replace diagnosis sensor unit if it has been dropped or sustained an impact.
 Replace the diagnosis sensor unit of deployed SRS air bag and deployed SRS front seat belt pre-ten-
sioner.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
 Be careful not to damage the diagnosis sensor harness.
 After the work is completed, make sure no system malfunction is detected by air bag warning lamp.
 In case that malfunction is detected by the air ba g warning lamp, reset by the self-diagnosis function
and delete the memory by CONSULT −III.
 In case that malfunction is still de tected after the above operation, perform self-diagnosis to repair
malfunctions. Refer to SRS-23, "
SRS Operation Check".
ECU DISCRIMINATED NO.
After replacing the diagnosis sensor unit, confirm that t he diagnosis sensor unit identification is correct for the
vehicle as equipped.
PHIA0315E
Specification ECU DISCRIMINATED No.
Models with driver and passenger air bags, seat belt pre-tensioner, side air bags and curtain air bags FB04
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TF-1
DRIVELINE/AXLE
CEF
G H
I
J
K L
M
SECTION TF
A
B
TF
N
O P
CONTENTS
TRANSFER
SERVICE INFORMATION .. ..........................3
DTC INDEX ..................................................... .....3
C1201-C1210, U1000 ......................................... ......3
PRECAUTIONS ...................................................4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
Precaution .................................................................4
Service Notice or Precaution .....................................5
PREPARATION ...................................................6
Special Service Tool ........................................... ......6
Commercial Service Tool ..........................................7
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
9
NVH Troubleshooting Chart ................................ ......9
TRANSFER FLUID .............................................10
Replacement ....................................................... ....10
Inspection ................................................................10
AWD SYSTEM ................................................ ....11
Power Transfer Diagram ..................................... ....11
System Description .................................................11
Schematic ...............................................................13
CAN Communication ...............................................13
TROUBLE DIAGNOSIS .....................................14
Fail-Safe Function ............................................... ....14
How to Perform Trouble Diagnosis .........................14
Location of Electrical Parts ......................................15
Circuit Diagram .......................................................16
Wiring Diagram - AWD - ..........................................17
Trouble Diagnosis Chart by Symptom ....................20
AWD Control Unit Input/Output Signal Reference
Value ................................................................... ....
20
CONSULT-III Function (ALL MODE AWD/4WD) ....21
TROUBLE DIAGNOSIS FOR SYSTEM .............24
DTC C1201 CONTROLLER FAILURE ................ ....24
DTC C1203 ABS SYSTEM ......................................24
DTC C1204 4WD SOLENOID ............................. ....25
DTC C1205 4WD ACTUATOR RLY ........................27
DTC C1210 ENGINE SIGNAL 1 ..............................28
DTC U1000 CAN COMM CIRCUIT .........................28
Power Supply Circuit for AWD Control Unit .............28
TROUBLE DIAGNOSIS FOR SYMPTOMS ......30
AWD Warning Lamp Does Not Turn ON When the
Ignition Switch Is Turned to ON ...............................
30
AWD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started ..................................
30
Heavy Tight-Corner Braking Symptom Occurs
When the Vehicle Is Driven and the Steering
Wheel Is Turned Fully to Either Side after the En-
gine Is Started .........................................................
32
Vehicle Does Not Enter AWD Mode Even Though
AWD Warning Lamp Turned to OFF .......................
33
While Driving, AWD Warning Lamp Flashes Rap-
idly (When Flashing in Approx. 1 Minute and Then
Turning OFF) ....................................................... ....
33
While Driving, AWD Warning Lamp Flashes Slow-
ly (When Continuing to Flash until Turning Ignition
Switch OFF) .............................................................
33
AWD CONTROL UNIT ......................................35
Removal and Installation .........................................35
FRONT OIL SEAL .............................................36
Removal and Installation .........................................36
REAR OIL SEAL ...............................................37
Removal and Installation .........................................37
AIR BREATHER HOSE ....................................39
Removal and Installation .........................................39
TRANSFER ASSEMBLY ..................................40
Removal and Installation .........................................40
Disassembly and Assembly .....................................40
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TF-4
< SERVICE INFORMATION >
PRECAUTIONS
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612930
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 performed by
an authorized NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PrecautionINFOID:0000000001327424
 Before connecting or disconnect ing the AWD control unit har-
ness connector, turn ignition switch “OFF” and disconnect
battery ground cable. Because battery voltage is applied to
AWD control unit even if igni tion switch is turned “OFF”.
 When connecting or disconnect ing pin connectors into or
from AWD control unit, take care not to damage pin terminals
(bend or break).
When connecting pin connectors, make sure that there are no
bends or breaks on AWD control unit pin terminal.
SEF289H
SEF291H
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TF-12
< SERVICE INFORMATION >
AWD SYSTEM
1. AWD control unit supplies command current to electric controlled coupling (AWD solenoid).
2. Control clutch is engaged by electromagnet and torque is detected in control clutch.
3. The cam operates in response to control clutch torque and applies pressure to main clutch.
4. Main clutch transmits torque to front wheels according to pressing power.  Transmission torque to front wheels is determined accordingto command current.
AWD CONTROL UNIT
 Controls distribution of drive power between rear-wheel drive(0:100) and AWD (50:50) conditions according to signals from sen-
sors.
 Self-diagnosis can be done with CONSULT-III.
AWD WARNING LAMP
Turns ON when there is a malfunction in AWD system. It indicates that fail-safe mode is engaged and vehicle
change to rear-wheel drive or shifting driving force- AWD (Front-wheels still have some driving torque).
Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
seconds after the engine starts if system is normal.
AWD Warning Lamp Indication
SDIA2270E
SDIA1844E
SDIA2273E
Condition AWD warning lamp
Lamp check Turns ON when ignition switch is turned ON. Turns OFF ap-
prox. 1 second after engine start.
AWD system malfunction ON
Protection function is activated due to heavy load to electric controlled
coupling. (AWD system is not malfunctioning and AWD system chang-
es to 2WD mode.) Rapid flashing: 2 times/second
(Flashing in approx. 1 minute and then turning OFF.)
Large difference in diameter of front/rear tires Slow flashing: 1 time/2 seconds
(Continuing to flash until turning ignition switch OFF)
Other than above (system normal) OFF
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