2005 INFINITI FX35 Service Manual

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Page 4641 of 4731

INFINITI FX35 2005 Service Manual TF-8
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2005 July 2005 FX
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartADS000RM
Use the chart belo

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INFINITI FX35 2005 Service Manual TRANSFER FLUID TF-9
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Revision: 2005 July 2005 FX
TRANSFER FLUIDPFP:31001
ReplacementADS000RN
DRAINING
1. Run the vehicle to warm up the transfer unit sufficiently

Page 4643 of 4731

INFINITI FX35 2005 Service Manual TF-10
AWD SYSTEM
Revision: 2005 July 2005 FX
AWD SYSTEMPFP:41650
Power Transfer DiagramADS000RV
System DescriptionADS000RW
DESCRIPTION
Electronic control allows optimal distribution of torque to fron

Page 4644 of 4731

INFINITI FX35 2005 Service Manual AWD SYSTEM TF-11
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Revision: 2005 July 2005 FX
ELECTRIC CONTROLLED COUPLING
Operation Principle
1. AWD control unit supplies command current to electric controlle

Page 4645 of 4731

INFINITI FX35 2005 Service Manual TF-12
AWD SYSTEM
Revision: 2005 July 2005 FX
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

Page 4646 of 4731

INFINITI FX35 2005 Service Manual AWD SYSTEM TF-13
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Revision: 2005 July 2005 FX
COMPONENTS FUNCTION DESCRIPTION
CAN CommunicationADS000RY
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a ser

AWD SYSTEM TF-13
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Revision: 2005 July 2005 FX
COMPONENTS FUNCTION DESCRIPTION
CAN CommunicationADS000RY
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
For details, refer to LAN-30, "
CAN Communication Unit" .
Component parts Function
AWD control unit
Controls driving force distribution by signals from each sensor and switch from rear wheel driving
mode (0:100) to AWD mode (50:50).
2WD mode is available by fail-safe function if malfunction is detected in AWD system.
Wheel sensors Detects wheel speed.
AWD solenoid Controls electric controlled coupling by command current from AWD control unit.
Electric controlled coupling Transmits driving force to front final drive.
AWD warning lamp
Illuminates if malfunction is detected in electrical system of AWD system.
There is 1 blink in 2 seconds if rotation difference of front wheels and rear wheels is large.
There are 2 blinks in 1 second if load is still applied to driving parts.
ABS actuator and electric unit
(control unit) Transmits the following signals via CAN communication to AWD control unit.
Vehicle speed signal
Stop lamp switch signal (brake signal)
ECM Transmits the following signals via CAN communication to AWD control unit.
Accelerator pedal position signal
Engine speed signal
Unified meter and A/C amp. Transmits conditions of parking brake switch via CAN communication to AWD control unit.

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INFINITI FX35 2005 Service Manual TF-14
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
TROUBLE DIAGNOSISPFP:00004
Fail-Safe FunctionADS000S1
If any malfunction occurs in AWD electrical system, and control unit detects the malfunction,

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INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS TF-15
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Revision: 2005 July 2005 FX
Location of Electrical PartsADS000ST
SDIA2272E

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