2008 INFINITI FX35 ESP

BCS-4
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE)
System DescriptionINFOID:0000000001328608
BCM (Body Control Module) controls the operation of various electrical units installed on the vehicle.
BCM FUNCTION
BCM has combination switch reading function for reading the operation of combination switches (light, wiper,
washer and turn signal) in addition to a function for cont rolling the operation of various electrical components.
Also it has an interface function allowing it to receive signals from the unified meter and A/C amp., and send
signals to ECM using CAN communication.
COMBINATION SWITCH READING FUNCTION
Description
 BCM reads combination switch (lighting switch, wiper switch) status, and controls various electrical compo-
nent according to the result.
 BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1-5) and
five input terminals (INPUT 1-5).
Operation Description
 BCM activates transistors of output terminals (OUTPUT 1-5) periodically, and allows current to flow in turn.
 If any (1 or more) switches are turned ON, circui t of output terminals (OUTPUT 1-5) and input terminals
(INPUT 1-5) becomes active.
 At this time, transistors of output terminals (OUTPUT 1- 5) are activated to allow current to flow. When volt-
age of input terminals (INPUT 1-5) corresponding to t hat switch changes, interface in BCM detects voltage
change, and BCM determines that switch is ON.
Operation Table Of BCM and Combination Switches
PKID0853E
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SQUEAK AND RATTLE TROUBLE DIAGNOSISBL-7
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SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Work FlowINFOID:0000000001327780
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interv iew to document the facts and conditions when the noise occurs and any
customer's comments; refer to BL-11, "
Diagnostic Worksheet". This information is necessary to duplicate the
conditions that exist when the noise occurs.
 The customer may not be able to provide a detailed description or the location of the noise. Attempt to obtain all the facts and conditions that exist when the noise occurs (or does not occur).
 If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer is
concerned about. This can be accomplished by test driving the vehicle with the customer.
 After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.
 Squeak —(Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard sur-
faces=higher pitch noise/softer surfaces=lower pitch noises/edge to surface=chirping
 Creak—(Like walking on an old wooden floor)
Creak characteristics include firm contact/slow mo vement/twisting with a rotational movement/pitch depen-
dent on materials/often brought on by activity.
 Rattle—(Like shaking a baby rattle)
Rattle characteristics include the fast repeated contac t/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.
 Knock —(Like a knock on a door)
Knock characteristics include hollow sounding/someti mes repeating/often brought on by driver action.
 Tick—(Like a clock second hand) Tick characteristics include gentle contacting of li ght materials/loose components/can be caused by driver
action or road conditions.
 Thump—(Heavy, muffled knock noise) Thump characteristics include softer k nock/dead sound often brought on by activity.
 Buzz—(Like a bumble bee)
Buzz characteristics include high frequency rattle/firm contact.
 Often the degree of acceptable noise level will vary depending upon the person. A noise that you may judge as acceptable may be very irritating to the customer.
 Weather conditions, especially humidity and temperat ure, may have a great effect on noise level.
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or lo cation of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
SBT842
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BL-64
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
2. Measure voltage between battery positive and negative termi-nals, (+) and ( −).
NOTE:
Key fob does not function if bat tery is not set correctly.
OK or NG
OK >> GO TO 2.
NG >> Replace battery.
2.CHECK KEY FOB FUNCTION
With CONSULT-III
Check key fob function in “DATA MONITOR” mode with CONSULT-III. When pushing each button of key fob,
the corresponding monitor item should be turned as follows.
OK or NG
OK >> Key fob is OK.
NG >> Replace key fob.
Check ACC SwitchINFOID:0000000001327824
1.CHECK ACC SWITCH
With CONSULT-III
Check ACC switch (“ACC ON SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III Voltage : 2.5 – 3.0V
SEL237W
Condition Monitor item
Pushing LOCK KEYLESS LOCK : ON
Pushing UNLOCK KEYLESS UNLOCK : ON
Keep pushing UNLOCK RKE KEEP UNLK : ON
Pushing PANIC KEYLESS PANIC : ON
Pushing LOCK and UNLOCK at the
same time RKE LCK-UNLOCK : ON
Monitor item Condition
ACC SW Ignition switch position is ACC or ON : ON
Ignition switch position is OFF : OFF
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BL-78
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
System Description
INFOID:0000000001327837
 The Intelligent Key system is a system which can lock and unlock the doors (door lock function) and start the engine (engine start function) by carrying around the Intelligent Key, which operates based on the results of
electrical key-ID verification using two-way comm unications between the Intelligent Key and the vehicle
 Operation of the remote control buttons on the Intelli gent Key also provides the same functions as the
remote control entry system. (Remote control entry functions)
 As an ignition key warning function, when a door is lock ed or unlocked with entry switch or remote controller
button operation, the hazard lamps flash and the Intelligent Key warning buzzer sounds.
 Even if the vehicle or Intelligent Key battery r uns down, the door can be locked and unlocked and the engine
started with the mechanical key built into the Intelligent Key.
 If an Intelligent Key was lost, a new Intelligent Key can be registered. A maximum of 4 Intelligent Keys can be registered.
 It has been made possible to diagnose the system, c hange the function setting and register an Intelligent
Key with the CONSULT-III.
DOOR LOCK FUNCTION
Operation Description
 When the driver door, passenger door, or back door request switch is pressed, Intelligent Key unit sends a request signal from the transmission antenna corresponding to the pressed door request switch, key-ID ver-
ification is performed using two-way communication with In telligent Key, and if ID is successfully verified, a
door lock/unlock request signal is sent to BCM (Body Control Module) using CAN communication to lock/
unlock the door lock.
 When door is locking, door is unlocked, when door is unlocking, door is locked.
 When door is locked/unlocked by door request switch operation, hazard lamps flash and Intelligent Key
warning buzzer sounds.
 With the locking operation of door request switch , door lock actuators of all door are locked.
Driver side door request switch operation
 When door request switch (driver side) is pushed (unlock), driver side door lock actuator is unlocked. (Selec-
tive door unlock function)
 When door request switch (driver side) is pushed (unlock) for the second time within 5 seconds after the first
operation, door lock actuators on pass enger's and other's doors are unlocked.
PIIB4645E
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BL-82
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
Warning Procedure
CHANGE SETTINGS FUNCTION
The settings for each function can be changed with the CONSULT-III or Intelligent Key operation.
Changing Settings With the Intelligent Key
Warning for take out of Intelligent
Key to outside the car (from win-
dow) When the ignition knob is pressed in so that it can be rotated (or has been rotated), if the
vehicle speed is no greater than 5 km per hour, the Intelligent Key unit compares the key-ID
with that of the Intelligent Key every 30 seconds using the inside key antenna, if the results
of the comparison are NG (the Intelligent Key is not found)
Note: The factory setting for this function is OFF.
Door lock non-operation warningWhen any of the following conditions are met
Intelligent Key Lock-in Prevention Warning
 When the Intelligent Key is inside the car and the ignition knob is not pressed, when an
attempt is made to lock a door lock with a door request switch
NOTE:
This warning is issued even if the Intelligent Key is not in the out side key antenna detec-
tion area corresponding to the door request switch was operated.
Knob Return Forgotten Warning
 When the ignition knob is pressed, when an attempt is made to lock a door lock with a door
request switch
NOTE:
This warning is only issued if the Intelligent Key is in the out side key antenna detection
area corresponding to the door request switch was operated.
Door Ajar Alarm
 When any of the doors is open, when an attempt is made to lock a door lock with a door
request switch
NOTE:
This warning is only issued if the Intelligent Key is in the out side key antenna detection
area corresponding to the door request switch was operated.
Intelligent Key low battery pre-warn-
ing This warning is issued when it is detected that the battery in the Intelligent Key has been
used up.
Warning and alarm names Operating conditions (when all the conditions below are met)
Warning and alarm names
Buzzer Warning lamp
Inside car Outside car “KEY” “P” shift
Ignition switch return forgotten
warning Buzzer: Continuous — — —
Selector lever return for gotten
warning — — — Illuminate
Ignition key warning
(When mechanical key used) Buzzer: Continuous — — —
Ignition switch OFF position
warning (for inside car: when
door closed) Buzzer: Continuous — — —
Ignition switch OFF position
warning (for outside car: when
door opened/closed) Buzzer: Continuous
Buzzer (10 sec-
onds) ——
Warning for removal of Intelli-
gent Key to outside the car
(when door open/closed) —
Buzzer (3 sec-
onds) Red illuminate —
Warning for removal of Intelli-
gent Key to outside the car
(from window) Buzzer (3 seconds) — Red illuminate —
Door lock non-o peration warn-
ing —Buzzer (2 sec-
onds) ——
Intelligent Key low battery pre-
warning ——Green illuminate
(30 seconds after ignition switch comes ON) —
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INTELLIGENT KEY SYSTEMBL-83
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Intelligent Key remote controller button and door reques t switch operations change the engine startup function
settings (startup enabled/disabled) for each Intelligent Key independently.
Settings Change Procedure1. With the ignition switch is in the LOCK positi on (ignition knob not pressed), hold down both the LOCK and
UNLOCK remote control buttons on the Intelligent Key at the same time for at least 10 seconds (The yard-
stick is that the Intelligent Key LED flashes 20 times.)
2. Within 5 seconds of releasing the Intelligent Key remote controller buttons, press the driver door request
switch.
3. The KEY warning lamp in combination meter lights up for 3 seconds (engine starting enabled → starting
disabled: lights up red, engine starting disabled → flashes green). This completes the settings change.
Changing Settings Using CONSULT-III
The settings for the Intelligent Key system func tions can be changed using CONSULT-III (WORK SUPPORT).
Refer to BL-104, "
CONSULT-III Application Item".
NOTE:
Once a function setting is changed, it will remain effective even if the battery is disconnected.
Changing Settings Using Display Unit
The settings of the Intelligent Key system can be changed, using CONSULT-III, display unit, Intelligent Key
and door request switch in the cent er of the instrument panel.
NOTE:
Once a function setting is changed, it will remain effective even if the battery is disconnected.
INTELLIGENT KEY REGISTRATION
Intelligent Key-ID registration is executed using the CONSULT-III. Up to 4 can be registered.
CAUTION:
 After a new Intelligent Key-ID is regi stered, be sure to check the function.
 When registering an additional Intelligent Key-ID , take any Intelligent Keys already registered and
Intelligent Keys for any other vehicles out of the vehicle before starting.
CONSULT-III can be used to check and delete Intelligent Key-IDs.
For future information, see the CO NSULT-III Operation Manual NATS.
STEERING LOCK UNIT REGISTRATION
Steering Lock Unit ID Registration
CAUTION:
 The method for registering a steering lock unit ID depends on the status of the steering lock unit and
Intelligent Key unit (new or old unit).
 After registration is completed, press ignition knob with a portable unit in the vehicle so that it can
be rotated, and confirm that it cannot be rotated even when ignition switch is pressed without a por-
table unit in the vehicle.
For further information, see the CONS ULT-III Operation Manual NATS.
CAN Communication System DescriptionINFOID:0000000001327838
CAN (Controller Area Network) is a serial communication li ne 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.
Setting item Description
Intelligent Key Lock Response-Sound The sound pattern of the Intelligent Key operation can be set as desired. (Setting value:
OFF, Beeper or Horn chirp)
Intelligent Key Unlock Response-Beep
Sound The beep sound when unlocking door with the Intelligent Key operation can be turned ON
or OFF.
Intelligent Key Engine Start Function This function can be performed to ON or OFF.
Intelligent Key Lock/Unlock Function The door handle request switch lock/unlock operation with the Intelligent Key can be can-
celed or activated.
Return All Settings to Default The all settings made by VEHICLE ELECTRONICS will return to default.
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FRONT DISC BRAKEBR-19
< SERVICE INFORMATION >
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 While removing cylinder body, never depr ess brake pedal because piston will pop out.
 It is not necessary to remove bolts on torq ue member and brake hose except for disassembly or
replacement of caliper assembly. In this case, suspe nd cylinder body with wire so as not to stretch
brake hose.
 Do not damage piston boot.
 If any shim is subject to serious corrosion, replace it with a new one.
 Always replace shims and shim covers as a set when replacing brake pads.
 Keep rotor clean, from brake fluid.
 Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or it a soft
pedal occurs at very low mileage. Refer to BR-23, "
Brake Burnishing Procedure".
Removal and Installation of Brake PadINFOID:0000000001327629
REMOVAL
1. Remove tires from vehicle with power tool.
2. Remove lower sliding pin bolt.
3. Hang cylinder body with a wire, and remove pads, pad retainers,
shims from torque member.
CAUTION:
When removing pad retainer from torque member, lift pad
retainer in the direction show n by arrow (shown in the fig-
ure) so as not to deform it.
INSTALLATION
1. Apply PBC (Poly Butyl Cuprysil) or silicone-based grease to the both sides of inner shim and outer shim, install inner shim and
inner shim cover to inner pad, and outer shim and outer shim
cover to outer pad.
2. Apply PBC (Poly Butyl Cuprysil) or silicone-based grease to pad contact surface on pad retainers, and install pad retainers and
pads to torque member.
CAUTION:
Inner pad and outer pad have pad-return mechanism on
upper side of pad retainer. When installing pad to torque
member, be sure to install pad return lever to pad wear sen-
sor securely.
3. Install cylinder body to torque member. CAUTION:
When replacing pads with new ones, press in piston until pads can be installed. In this case, care-
fully monitor brake fluid level in reservoir tank because brake fluid will return to master cylinder
reservoir tank.
4. Install lower sliding pin bolt, and tighten it to the specified torque. Refer to BR-18, "
Component".
5. Secure disc rotor with wheel nuts. Depress brake pedal a few times until it gets a responsive touch.
6. Check brake for drag.
7. Install tires to vehicle.
Removal and Installation of Brake Caliper AssemblyINFOID:0000000001327630
REMOVAL
1. Remove tires from vehicle with power tool.
2. Fasten disc rotor using wheel nut.
3. Drain brake fluid. Refer to BR-8, "
Drain and Refill".
SBR556E
SBR557E
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TROUBLE DIAGNOSISBRC-33
< SERVICE INFORMATION > [VDC/TCS/ABS]
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× : ON –: OFF
Note 1:Brake warning lamp will turn on in case of operating parking brake (switch turned on) or of actuating brake fluid level switch
(brake fluid is insufficient).
Note 2:After starting engine, turn OFF.
1. Make sure ABS warning lamp, VDC OFF indicator lamp (when VDC OFF switch is OFF), and SLIP indica- tor lamp turn on approximately 2 second, and brake warning lamp turns on when ignition switch is turned
ON. If they do not, check VDC OFF indicator lamp and then VDC OFF switch. Refer to BRC-48, "
Compo-
nent Inspection". Check CAN communications. Refer to “CAN Communication Inspection”. If there are no
errors with VDC OFF switch and CAN communication system, check combination meter. Refer to DI-5
.
2. Make sure ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp turn off approximately 2 sec- ond after turn ignition switch ON, and brake warning lamp turns off after engine starts. If lamps do not turn
off, perform self-diagnosis.
3. With engine running, make sure VDC OFF indicator lamp turns on and off when VDC OFF switch is turned ON and OFF. If indicator lamp status does not correspond to switch operation, check the VDC OFF
switch system. Refer to BRC-48, "
Component Inspection".
4. Make sure ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn off 2 seconds after engine is started. If ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp have not turned
off 10 seconds after engine has been started, perform self-diagnosis of ABS actuator and electric unit
(control unit).
5. After performing the self-diagnosis, be sure to erase the error memory. Refer to BRC-26, "
Self-Diagnosis".
NOTE:
Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or of brake fluid level
switch should not stay “ON” position.
Condition ABS warning
lamp VDC OFF in-
dicator lamp SLIP indicator
lamp Brake warning
lamp (Note 1) Remarks
Ignition switch OFF. – – – — —
Approx. 2 seconds after ignition
switch is turned ON. ×× ××
(Note 2) —
Approx. 2 seconds later after ig-
nition switch ON. –– –
× (Note 2) Go out 2 seconds after igni-
tion switch is turned ON.
VDC OFF switch is turned ON.
(VDC/TCS function is OFF.) –
× –— —
VDC/TCS/ABS error. ×× × —There is an ABS actuator
and electric unit (control unit)
error. (Power, ground or sys-
tem malfunction)
When VDC/TCS is not function-
ing normally. –
×× ——
EBD error. ×× × × —
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