electrical INFINITI FX35 2006 Service Manual

AWD SYSTEM TF-13
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Revision: 2006 December 2006 FX35/FX45
COMPONENTS FUNCTION DESCRIPTION
CAN CommunicationNDS0009X
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-32, "
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.

TF-14
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
Fail-Safe FunctionNDS0009Y

If any malfunction occurs in AWD electrical system, and control unit detects the malfunction, AWD warn-
ing lamp on combination meter turns ON to indicate system malfunction.

When AWD warning lamp is ON, vehicle changes to rear-wheel drive or shifting driving force-AWD (Front-
wheels still have some driving torque).
How to Perform Trouble DiagnosisNDS0009Z
BASIC CONCEPT

To perform trouble diagnosis, it is the most important to have understanding about vehicle systems (con-
trol and mechanism) thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptoms, and understand them fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptoms by driving vehicle with
customer.
CAUTION:
Customers are not professional. It is dangerous to make an
easy guess like “maybe the customer means that...,” or
“maybe the customer mentions this symptom”.

It is essential to check symptoms right from the beginning in
order to repair malfunctions completely.
For intermittent malfunctions, reproduce symptoms based on
interview with customer and past examples. Do not perform
inspection on ad hoc basis. Most intermittent malfunctions are
caused by poor contacts. In this case, it will be effective to shake
suspected harness or connector by hand. When repairing with-
out any symptom diagnosis, you cannot judge if malfunctions
have actually been eliminated.

After completing diagnosis, always erase diagnostic memory.
Refer to TF-23, "
How to Erase Self-Diagnostic Results" .

For intermittent malfunctions, move harness or harness connec-
tor by hand. Then check for poor contact or reproduced open circuit.
SEF233G
SEF234G

TROUBLE DIAGNOSIS TF-15
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Revision: 2006 December 2006 FX35/FX45
Location of Electrical PartsNDS000A0
SDIA2272E

PRECAUTIONS WT-3
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Revision: 2006 December 2006 FX35/FX45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NES000LR
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.
PrecautionsNES000LS

Before connecting or disconnecting the BCM harness con-
nector, turn ignition switch “OFF” and disconnect the bat-
tery cable from the negative terminal. Battery voltage is
applied to BCM even if ignition switch is turned “OFF”.

When connecting or disconnecting pin connectors into or
from BCM, take care not to damage pin terminals (bend or
break).
When connecting pin connectors make sure that there are
not any bends or breaks on BCM pin terminals.

Before replacing BCM, perform control unit input/output
signal inspection and make sure whether BCM functions
properly or not. Refer to WT-17, "
Control Unit Input/Output
Signal Standard" .
SEF289H
SEF291H
SDIA1848E

WW-1
WIPER, WASHER & HORN
K ELECTRICAL
CONTENTS
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SECTION WW
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Revision: 2006 December 2006 FX35/FX45
WIPER, WASHER & HORN
PRECAUTION ....................................................... ..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
FRONT WIPER AND WASHER SYSTEM ............. ..... 4
Components Parts and Harness Connector Loca-
tion ...................................................................... ..... 4
System Description ............................................. ..... 4
OUT LINE ......................................................... ..... 4
LOW SPEED WIPER OPERATION ................. ..... 5
HI SPEED WIPER OPERATION ...................... ..... 5
INTERMITTENT OPERATION ......................... ..... 5
AUTO STOP OPERATION ............................... ..... 6
WASHER OPERATION .................................... ..... 6
MIST OPERATION ........................................... ..... 6
FAIL-SAFE FUNCTION .................................... ..... 7
COMBINATION SWITCH READING FUNCTION ..... 8
CAN Communication System Description ........... ... 10
CAN Communication Unit ................................... ... 10
Schematic ........................................................... .... 11
Wiring Diagram — WIPER — ............................. ... 12
Terminals and Reference Values for BCM .......... ... 15
Terminals and Reference Values for IPDM E/R .. ... 18
How to Proceed With Trouble Diagnosis ............. ... 19
Preliminary Check ............................................... ... 19
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ................................................................. ... 19
CONSULT-II Functions (BCM) ............................ ... 20
CONSULT-II BASIC OPERATION .................... ... 20
WORK SUPPORT ............................................ ... 20
DATA MONITOR .............................................. ... 20
ACTIVE TEST .................................................. ... 21
CONSULT-II Functions (IPDM E/R) .................... ... 22
CONSULT-II BASIC OPERATION .................... ... 22
DATA MONITOR .............................................. ... 22
ACTIVE TEST .................................................. ... 22
Front Wiper Does Not Operate ........................... ... 23
Front Wiper Does Not Return to Stop Position .... ... 25
Only Front Wiper Low Does Not Operate ........... ... 26
Only Front Wiper Hi Does Not Operate ............... ... 28 Only Front Wiper Intermittent Does Not Operate ... 29
Front Wiper Interval Time Is Not Controlled by Vehi-
cle Speed ............................................................. ... 29
Front Wiper Intermittent Operation Switch Position
Cannot Be Adjusted ............................................. ... 30
Wiper Does Not Wipe When Front Washer Operates ... 30
After Front Wiper Operate for 10 Seconds, They
Stop for 20 Seconds, and After Repeating the Oper-
ations Five Times, They Become Inoperative ..... ... 31
Front Wiper Does Not Stop .................................. ... 32
Removal and Installation of Front Wiper Arms,
Adjustment of Wiper Arms Stop Location ............ ... 33
REMOVAL ........................................................ ... 33
INSTALLATION ................................................ ... 33
ADJUSTMENT ................................................. ... 33
Removal and Installation of Front Wiper Drive
Assembly ............................................................. ... 33
REMOVAL ........................................................ ... 33
INSTALLATION ................................................ ... 33
Disassembly and Assembly of Front Wiper Drive
Assembly ............................................................. ... 34
DISASSEMBLY ................................................ ... 34
ASSEMBLY ...................................................... ... 34
Washer Nozzle Adjustment ................................. ... 34
Washer Tube Layout ........................................... ... 36
Removal and Installation of Front Washer Nozzle ... 36
Removal and Installation of Front Washer Tube
Joint ..................................................................... ... 36
REMOVAL ........................................................ ... 36
INSTALLATION ................................................ ... 36
Inspection of Washer Nozzle ............................... ... 36
CHECK VALVE ................................................. ... 36
Removal and Installation of Front Wiper and Washer
Switch .................................................................. ... 37
REMOVAL ........................................................ ... 37
INSTALLATION ................................................ ... 37
Removal and Installation of Washer Tank ........... ... 37
REMOVAL ........................................................ ... 37

PRECAUTION WW-3
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Revision: 2006 December 2006 FX35/FX45
PRECAUTIONPFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS00325
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.