Infiniti FX35, FX50 (S51). Manual — part 409
CCS-456
< SYSTEM DESCRIPTION >
[LDW & LDP]
LANE DEPARTURE PREVENTION (LDP) SYSTEM
LANE DEPARTURE PREVENTION (LDP) SYSTEM
System Diagram
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System Description
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OUTLINE
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CCS
LANE DEPARTURE PREVENTION (LDP) SYSTEM
CCS-457
< SYSTEM DESCRIPTION >
[LDW & LDP]
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• Lane Departure Prevention (LDP) system provides a lane departure warning and brake control assistance
when the vehicle is driven at speeds of approximately 72 km/h (45 MPH) or more.
• When the vehicle approaches either the left or the right side of the traveling lane, a warning sounds and the
lane departure warning lamp (yellow) on the combination meter blinks to alert the driver.
• Then, the LDP system automatically applies the brakes for a short period of time to help assist the driver to
return the vehicle to the center of the traveling lane.
• The warning and assist functions stop when the vehicle returns to a position inside of the lane marker.
NOTE:
• LDP system settings can be changed by using the vehicle settings function in the navigation system.
• When the ignition switch is in ACC position, LDP system settings cannot be changed.
BASIC OPERATIONS
Switches and Indicator/Warning Lamps
Bulb Check Action and Fail-safe Indication
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1.
• LDP ON indicator lamp (Green)
• Lane departure warning lamp (Yel-
low)
2.
LDP switch
(Shared with DCA switch)
A.
On the combination meter
B.
On the ICC steering switch
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CCS-458
< SYSTEM DESCRIPTION >
[LDW & LDP]
LANE DEPARTURE PREVENTION (LDP) SYSTEM
LDP SYSTEM CONTROL DESCRIPTION
• LDP system is controlled by lane camera unit and LDP controller [ABS actuator and electric unit (control
unit)].
NOTE:
LDP controller is integrated in the ABS actuator and electric unit (control unit).
• Lane camera unit monitors lane markers of the traveling lane. It transmits the detected lane condition signal
to ABS actuator and electric unit (control unit) via CAN communication.
• ABS actuator and electric unit (control unit) detects vehicle conditions depending on each signal.
• Combination meter turns the lane departure warning lamp and LDP ON indicator lamp ON/OFF according to
the signals from the lane camera unit via CAN communication (through unified meter and A/C amp.).
• When ABS actuator and electric unit (control unit) judges vehicle deviation from the traveling lane, it controls
following actions.
- Requests warning to the lane camera unit via CAN communication to alert the driver. And then lane camera
unit controls the lane departure warning buzzer and it requests the lane departure warning lamp activation to
combination meter.
- Calculates the necessary yaw moment. And then it controls the brake pressure of each wheel individually to
generate the intended movement.
• ICC sensor integrated unit receives signals from the AV control unit and the ECM and transmits an LDP ON
signal to the ABS control unit.
LDP OPERATING CONDITION
• LDP ON indicator lamp: ON
NOTE:
• When the LDP system setting on the navigation screen is ON.
• LDW ON indicator is OFF.
• Vehicle speed: approximately 72 km/h (45 MPH) or more
Vehicle condition/Driver's operation
Indication on the combination meter
Ignition switch:
OFF
⇒
ON
When DTC is detected
(Except “C1B01” or “C1B03”)
Camera aiming is not completed
(“C1B01” is detected)
Temporary disabled status at high temperature
(“C1B03” is detected)
When the LDP switch is turned ON with settings of DCA system and
LDP system OFF
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CCS
LANE DEPARTURE PREVENTION (LDP) SYSTEM
CCS-459
< SYSTEM DESCRIPTION >
[LDW & LDP]
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B
N
P
A
NOTE:
For details of LDP system operating conditions, refer to normal operating condition
SIGNAL INPUT/OUTPUT BY CAN COMMUNICATION
The lane camera unit and ABS actuator and electric unit (control unit) transmit/receive each signals via CAN
communication. They also detect the vehicle conditions necessary for LDP control.
Input
Output
Vehicle speed
(Approx.)
[km/h (MPH)]
Vehicle condition/ Driver's
operation
Action
Indication on the combination meter
Buzzer
Less than 64
(40)
Close to lane marker
No action
—
72 (45) or
more
Close to lane marker
Warning and yawing
• Buzzer sounds
• Warning lamp blinks
• Brake control
Short continu-
ous beeps
• Close to lane marker
• Turn signal ON (Deviate
side)
No action
—
Close to lane with soft brak-
ing
Warning
• Buzzer sounds
• Warning lamp blinks
Short continu-
ous beeps
VDC OFF switch:
OFF
⇒
ON
Cancellation
• Buzzer sounds
• Indicator lamp blinks
NOTE:
When LDP switch is ON
⇒
OFF, indicator lamp is turned
OFF.
Beep
SNOW MODE switch:
OFF
⇒
ON
(If equipped)
Cancellation
• Buzzer sounds
• Indicator lamp blinks
NOTE:
When LDP switch is ON
⇒
OFF, indicator lamp is turned
OFF.
Beep
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