wiper fluid INFINITI QX56 2011 Factory Service Manual

COMPONENT PARTSBRC-143
< SYSTEM DESCRIPTION > [BRAKE ASSIST (WITH PREVIEW FUNCTION)]
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Component DescriptionINFOID:0000000006248457
× : Applicable
13. Steering angle sensor
Refer to BRC-10, "
Component Parts
Location"
14. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Back side of engine room (RH) B. Front bumper (center) C. Upper side of brake pedal
D. Under side of instrument lower driver
panel
Component Function
Description
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode Intelligent Brake Assist (IBA)
Brake Assist (with preview function)
ADAS control unit ×××× ADAS control unit calculates a target distance between vehicles
and a target speed, based on signals received from each sensor
and switch to transmit an engine torque command value to ECM
and a brake fluid pressure cont rol signal to ABS actuator and
electric unit (control unit) via CAN communication
 ADAS control unit transmits buzzer output signal to combination
meter via CAN communication
ICC sensor ×××× ICC sensor detects light reflected from a vehicle ahead by irra-
diating laser forward and calculates a distance from the vehicle
ahead and a relative speed, based on the detected signal
 ICC sensor transmits the presence/absence of vehicle ahead and the distance from the vehicle to ADAS control unit via ITS
communication
ECM ×××× ECM transmits the accelerator pedal position signal, ICC brake
switch signal, stop lamp switch signal, ICC steering switch sig-
nal, etc. to ADAS control unit via CAN communication
 ECM controls the electric throttle control actuator based on the engine torque demand received from the ADAS control unit via
CAN communication
ABS actuator and electric unit
(control unit) ×××× ABS actuator and electric unit (c
ontrol unit) transmits the vehicle
speed signal (wheel speed), stop lamp signal and VDC/TCS/
ABS system operation condition to ADAS control unit via CAN
communication
 ABS actuator and electric unit (c ontrol unit) controls the brake,
based on a brake fluid pressure control signal received from the
ADAS control unit via CAN communication
BCM ×BCM transmits the front wiper request signal to ADAS control unit
via CAN communication
TCM ××TCM transmits the signal related to A/T control to ADAS control
unit via CAN communication
Revision: 2010 May2011 QX56

BRC-150
< SYSTEM DESCRIPTION >[INTELLIGENT BRAKE ASSIST]
COMPONENT PARTS
Component Description
INFOID:0000000006248459
× : Applicable
13. Steering angle sensor
Refer to BRC-10, "
Component Parts
Location"
14. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Back side of engine room (RH) B. Front bumper (center) C. Upper side of brake pedal
D. Under side of inst rument lower driver
panel
Component Function
Description
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode Intelligent Brake Assist (IBA)
Brake Assist (with preview function)
ADAS control unit ×××× ADAS control unit calculates a target distance between vehicles
and a target speed, based on signals received from each sensor
and switch to transmit an engine torque command value to ECM
and a brake fluid pres sure control signal to ABS actuator and
electric unit (control unit) via CAN communication
 ADAS control unit transmits buzzer output signal to combination
meter via CAN communication
ICC sensor ×××× ICC sensor detects light reflected from a vehicle ahead by irra-
diating laser forward and calculates a distance from the vehicle
ahead and a relative speed, based on the detected signal
 ICC sensor transmits the presence/absence of vehicle ahead and the distance from the vehicle to ADAS control unit via ITS
communication
ECM ×××× ECM transmits the accelerator pedal position signal, ICC brake
switch signal, stop lamp switch signal, ICC steering switch sig-
nal, etc. to ADAS control unit via CAN communication
 ECM controls the electric throttle control actuator based on the engine torque demand received from the ADAS control unit via
CAN communication
ABS actuator and electric unit
(control unit) ×××× ABS actuator and electric unit (control unit) transmits the vehicle
speed signal (wheel speed), stop lamp signal and VDC/TCS/
ABS system operation condition to ADAS control unit via CAN
communication
 ABS actuator and electric unit (control unit) controls the brake, based on a brake fluid pressure control signal received from the
ADAS control unit via CAN communication
BCM ×BCM transmits the front wiper request signal to ADAS control unit
via CAN communication
TCM ××TCM transmits the signal related to A/T control to ADAS control
unit via CAN communication
Revision: 2010 May2011 QX56

CCS-10
< SYSTEM DESCRIPTION >[ICC]
COMPONENT PARTS
Component Description
INFOID:0000000006224266
× : Applicable
13. Steering angle sensor
Refer to BRC-10, "
Component Parts
Location"
14. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Back side of engine room (RH) B. Front bumper (center) C. Upper side of brake pedal
D. Under side of inst rument lower driver
panel
Component Function
Description
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode Intelligent Brake Assist (IBA)
Brake Assist (with preview function)
ADAS control unit ×××× ADAS control unit calculates a target distance between vehicles
and a target speed, based on signals received from each sensor
and switch to transmit an engine torque command value to ECM
and a brake fluid pres sure control signal to ABS actuator and
electric unit (control unit) via CAN communication
 ADAS control unit transmits buzzer output signal to combination
meter via CAN communication
ICC sensor ×××× ICC sensor detects light reflected from a vehicle ahead by irra-
diating laser forward and calculates a distance from the vehicle
ahead and a relative speed, based on the detected signal
 ICC sensor transmits the presence/absence of vehicle ahead and the distance from the vehicle to ADAS control unit via ITS
communication
ECM ×××× ECM transmits the accelerator pedal position signal, ICC brake
switch signal, stop lamp switch signal, ICC steering switch sig-
nal, etc. to ADAS control unit via CAN communication
 ECM controls the electric throttle control actuator based on the engine torque demand received from the ADAS control unit via
CAN communication
ABS actuator and electric unit
(control unit) ×××× ABS actuator and electric unit (control unit) transmits the vehicle
speed signal (wheel speed), stop lamp signal and VDC/TCS/
ABS system operation condition to ADAS control unit via CAN
communication
 ABS actuator and electric unit (control unit) controls the brake, based on a brake fluid pressure control signal received from the
ADAS control unit via CAN communication
BCM ×BCM transmits the front wiper request signal to ADAS control unit
via CAN communication
TCM ××TCM transmits the signal related to A/T control to ADAS control
unit via CAN communication
Revision: 2010 May2011 QX56

CCS
SYSTEMCCS-17
< SYSTEM DESCRIPTION > [ICC]
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With ICC system, the driver can maintain the same speed as other vehicles without the constant need to
adjust the set speed as driver would with a normal cruise control system.
The following items are controlled in the vehicle-to-vehicle distance control mode
 When there are no vehicles traveling ahead, the vehi cle-to-vehicle distance control mode maintains the
speed set by the driver. The set speed range is between approximately 32 and 144 km/h (20 and 90 MPH).
 When there is a vehicle traveling ahead, the vehicle- to-vehicle distance control mode adjusts the speed to
maintain the distance, selected by driver, from a vehicle ahead. The adjusting speed range is up to the set
speed.
 When the vehicle traveling ahead has moved out from its lane of travel, the vehicle-to-vehicle distance con-
trol mode accelerates and maintains vehicle speed up to the set speed.
CAUTION:
If the vehicle ahead comes to stop, the vehicle decel erates to a standstill within the limitations of the
system. The system will cancel once it judges that the vehicle has come to a standstill and sound a
warning chime.
To prevent the vehicle from moving, th e driver must depress the brake pedal.
NOTE:
When the accelerator pedal is depressed, the brake oper ation and the warning are not performed by the ICC
system.
OPERATION DESCRIPTION
Quickly push (less than 1.5 seconds) and release the MAIN switch ON.
The MAIN switch indicator, set distance indicator, own vehicle indicator, and set vehicle speed indicator come
on and ICC system is set to a standby state.
ADAS control unit performs the control as per the following:
Set Condition
Under a standby state, pushing down the SET/ COAST switch will start system control.
 When vehicle speed is between approximately 32 km/h and 144 km/h (20 MPH and 90 MPH).
 When vehicle speed is below approximately 32 km/h ( 20 MPH) if the vehicle ahead is detected. The set
vehicle speed becomes 32 km/h (20 MPH).
If the system is canceled by conditi ons 1-6 below, the system will resume c ontrol at the last set cruising speed
by pushing up the RESUME/ACCELERATE switch.
NOTE:
 When the SET/COAST switch is pushed under the following condi- tions, the system cannot be set and the set vehicle speed indicator
will blink for approximately 2 seconds.
- When traveling below 32 km/h (20 MPH) and the vehicle ahead is not detected.
- When the selector lever is not in the “D” position or manual mode.
- When the front wipers are operating at HI.
(If the vehicle is equipped with a rain sensing auto-wiper, the sys-
tem may cancel when the wipers are set to AUTO)
- When the parking brakes are applied.
- When the brakes are operated by the driver.
Constant
speed Comparing the set vehicle speed with the current vehicle speed, transmit the command to ECM via CAN communication
to reach the set vehicle speed, and controls the electric throttle control actuator
Decelera-
tion When a vehicle ahead (slower than driver set vehicle speed) appears or when a vehicle ahead slows down, the system
controls the electric throttle control actuator into the close direction and decelerates the vehicle. If greater deceleration
is necessary, the system
transmits the brake fluid pressure control signal to the ABS actuator and electric unit (control
unit) via CAN communication and operates the brake
Following The system controls the electric throttle control actuator and the brake fluid pressure to keep the proper distance between
the vehicles according to the vehicle speed change of the vehicle ahead
Accelera-
tion When a vehicle ahead is not detected because of it changes lanes or own vehicle changes lanes during the following
driving, the system controls the electric throttle control actu
ator in the open direction and accelerates the vehicle to the
set vehicle speed slowly
JPOIA0222ZZ
Revision: 2010 May2011 QX56

LAN-32
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
Steering calibration signal R T R
Hazard request signalRT
RT
Horn request signal R T
Low tire pressure warning
lamp signal RT
Tire pressure data signal R T
A/C compresso r feedback
signal RRT
Detention switch signal R T R
Engine restart control sig-
nal RT
Front wiper stop position
signal RT
High beam status signal R T
Hood switch signal R T
Low beam status signal R R T
Push-button ignition switch
status signal RT
Starter control relay signal R T
Steering lock unit status
signal RT
CK SUSP indi cator lamp
signal RT
Brake fluid pressure control
signal R
T
BSW warning lamp signal R T
IBA OFF indicator lamp sig-
nal RT
IBA operation signal RT
ICC operation signal R T
ICC warning lamp signal R T
Lane departure warning
lamp signal RT
LDP ON indicator lamp sig-
nal RT
Target yaw moment signal R T
Signal name
ECM
4WD
ABS
TCM
A-BAG
AFSAV
BCM
CGW
HVAC
M&A
STRG
TPMS
IPDM-E ADP
PSB
E-SUS ICC
PWBD
Revision: 2010 May2011 QX56

WW-6
< SYSTEM DESCRIPTION >
COMPONENT PARTS
Component Description
INFOID:0000000006300449
Washer SwitchINFOID:0000000006300450
 Washer switch is integrated combination switch.
 Combination switch switches polarity between front washer operating and rear washer operating to supply
power to the washer pump on ground.
Part Description
IPDM E/R  Controls the integrated relay according to the request (via CAN communication) from BCM.
 Performs the auto stop control of the front wiper.
BCM  Judges the each switch status by the combination switch reading function.
 Requests (via CAN communication) the front wiper relay and the front wiper high relay ON to
IPDM E/R.
 Supplies power to the rear wiper motor.
 Performs the auto stop control of the rear wiper.
 Requests (via CAN communication) the headlamp washer relay ON to IPDM I/R.
TCM Transmits the shift position signal to BCM via CAN communication.
Light & rain sensor Detects water droplets on the windshield with infrared rays, and transmits the rain sensor signal
to BCM via the rain sensor serial link.
Combination switch
(Wiper & washer switch) Refer to
BCS-7, "
COMBINATION SWITCH READING S YSTEM : System Description".
Washer switch Refer to WW-6, "
Washer Switch".
Washer pump  Washer fluid is sprayed according to washer switch states.
 Switching between front washer and rear washer is performed according to the voltage polarity
change to washer pomp.
Headlamp washer pump Washer fluid is sprayed according to washer switch states and headlamp switch status.
Front wiper motor  IPDM E/R controls front wiper operation.
 Front wiper auto stop signal is transmitted to IPDM E/R.
Rear wiper motor  BCM controls rear wiper operation.
 Rear wiper auto stop signal is transmitted to BCM.
Combination meter Transmits the vehicle speed signal to BCM via CAN communication.
JPLIA0163GB
Revision: 2010 May2011 QX56

SYSTEMWW-7
< SYSTEM DESCRIPTION >
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SYSTEM
FRONT WIPER AND WASHER SYSTEM
FRONT WIPER AND WASHER SYSTEM : System DiagramINFOID:0000000006300451
FRONT WIPER AND WASHER S YSTEM : System DescriptionINFOID:0000000006300452
OUTLINE
The front wiper is controlled by each function of BCM and IPDM E/R.
Control by BCM
 Combination switch reading function
 Front wiper control function
Control by IPDM E/R
 Front wiper control function
 Relay control function
Combination meter indicates low washer fluid level warning judged by the signal from the washer level switch.
For details of low washer fluid level warning, refer to MWI-16, "
MASTER WARNING LAMP : System Descrip-
tion".
FRONT WIPER BASIC OPERATION
 BCM detects the combination switch condition by the combination switch reading function.
 BCM transmits the front wiper request signal to IPDM E/R via CAN communication depending on each oper-
ating condition of the front wiper.
 IPDM E/R turns ON/OFF the integrated front wiper rela y and the front wiper high relay according to the front
wiper request signal. IPDM E/R provides the power supply to operate the front wiper HI/LO operation.
FRONT WIPER LO OPERATION
 BCM transmits the front wiper request signal (LO) to IPDM E/R via CAN communication according to the
front wiper LO operating condition.
Front wiper LO operating condition
- Ignition switch ON
- Front wiper switch LO or front wiper switch MIST (while pressing)
 IPDM E/R turns ON the integrated front wiper rela y according to the front wiper request signal (LO).
FRONT WIPER HI OPERATION
 BCM transmits the front wiper request signal (HI) to IPDM E/R via CAN communication according to the
front wiper HI operating condition.
Front wiper HI operating condition
- Ignition switch ON
- Front wiper switch HI
 IPDM E/R turns ON the integrated front wiper relay and the front wiper high relay according to the front wiper
request signal (HI).
JPLIA1630GB
Revision: 2010 May2011 QX56

WW-66
< REMOVAL AND INSTALLATION >
FRONT WIPER ARM
FRONT WIPER ARM
Exploded ViewINFOID:0000000006220408
Removal and InstallationINFOID:0000000006220409
REMOVAL
1. Operate front wiper to move it to the auto stop position.
2. Open the hood.
3. Remove front wiper arm caps.
4. Remove front wiper arm mounting nuts.
5. Raise front wiper arm, and then remove front wiper arm from the vehicle.
INSTALLATION
1. Clean wiper arm mount as shown in the figure to prevent nuts
from being loosened.
2. Operate front wiper motor to move the front wiper to the auto stop position.
3. Adjust front wiper blade position. Refer to WW-66, "
Adjustment".
4. Install front wiper arm by tightening the mounting nuts.
5. Inject the washer fluid.
6. Operate front wiper to move it to the auto stop position.
7. Check that the front wiper blades stop at the specified position.
8. Install front wiper arm caps.
AdjustmentINFOID:0000000006220410
WIPER BLADE POSITION ADJUSTMENT
1. Front wiper blade RH 2. Front wiper arm RH 3. Front wiper arm cap
4. Front wiper drive assembly 5. Front wiper motor 6. Front wiper arm LH
7. Front wiper blade LH
Refer to GI-4, "
Components" for symbols in the figure.
JMLIA0940GB
ELH0717D
Revision: 2010 May2011 QX56

WW-74
< REMOVAL AND INSTALLATION >
REAR WIPER ARM
REAR WIPER ARM
Exploded ViewINFOID:0000000006220420
Removal and InstallationINFOID:0000000006220421
REMOVAL
1. Operate rear wiper to the auto stop position.
2. Remove rear wiper arm cover.
3. Remove rear wiper arm mounting nut.
4. Remove wiper arm from the vehicle.
INSTALLATION
1. Clean wiper arm mount as shown in the figure to prevent nutfrom being loosened.
2. Operate the rear wiper motor to the auto stop position.
3. Adjust the rear wiper blade position. Refer to WW-74, "
Adjust-
ment".
4. Install the rear wiper arm by tightening the mounting nut.
5. Inject the washer fluid.
6. Operate the rear wiper to the auto stop position.
7. Check that the rear wiper blades stop at the specified position.
8. Install the rear wiper arm cover.
AdjustmentINFOID:0000000006220422
REAR WIPER BLADE POSITION ADJUSTMENT
Set the wiper blade top on the defrosting wire (A) (c learance between the end of back door glass and the top
of wiper blade center).
1. Rear wiper motor 2. Pivot seal 3. Rear wiper arm
4. Rear wiper arm cover 5. Rear wiper blade
Refer to GI-4, "
Components" for symbols in the figure.
JMLIA0942GB
SKIA0082J
Revision: 2010 May2011 QX56