Infiniti FX35, FX50 (S51). Manual - part 410

CCS-460

< SYSTEM DESCRIPTION >

[LDW & LDP]

LANE DEPARTURE PREVENTION (LDP) SYSTEM

Reception Unit

Signal Name

Transmission Unit

Description

(Reception unit uses...)

Lane camera unit

LDP operation signal

ABS actuator and elec-
tric unit (control unit)

Detects the LDP operating condition

LDP condition signal

Detects the LDP conditions

LDP buzzer request signal

Controls the lane departure warning buzzer ac-
cording to the request

LDP meter indication request 
signal

Controls the LDP ON indicator lamp and lane de-
parture warning lamp according to the request

Vehicle speed signal

Detects the vehicle speed

Front wiper status signal

Detects operation of the front wiper

Turn indicator signal

BCM

Detects operation of turn signals

Ambient temperature signal

Unified meter and A/C 
amp.

Detects the ambient temperature

ABS actuator and 
electric unit (control 
unit)

Detected lane condition signal

Lane camera unit

Detects the lane marker condition

Lane camera status signal

Detects the lane camera status

LDW operation signal

Detects the LDW operation

Lane departure buzzer opera-
tion signal

Detects the lane departure warning buzzer opera-
tion

LDW switch signal

Detects LDW switch status

LDP ON indicator lamp signal

Detects the LDP ON indicator lamp condition

Lane departure warning lamp 
signal

Detects the lane departure warning lamp condition

Snow mode switch signal

ECM

Detects the snow mode status

Accelerator pedal position sig-
nal

Detects vehicle conditions to calculate the acceler-
ation/deceleration of the vehicle

Engine speed signal

Shift position signal

TCM

Detects the transmission conditions

Output shaft revolution signal

Input speed signal

Current gear position signal

Steering angle sensor signal

Steering angle sensor

Detects the steering angle

ICC operation signal

ICC sensor integrated 
unit

Detects ICC system conditions

Target approach warning signal 

Buzzer output signal

LDP ON signal

Detects the LDP ON status

Turn indicator signal

BCM

Detects operation of turn signals

Front wiper request signal

Detects operation of the front wiper

Combination meter
(through unified meter 
and A/C amp.)

LDP ON indicator lamp signal

Lane camera unit

Turns the LDP ON indicator lamp ON/OFF accord-
ing to the request

Lane departure warning lamp 
signal

Turns the lane departure warning lamp ON/OFF 
according to the request

ICC sensor integrated 
unit

ICC steering switch signal
(LDP switch signal)

ECM

Detects the LDP switch status

System selection signal

AV control unit

Detects the LDP system setting status

CCS

LANE DEPARTURE PREVENTION (LDP) SYSTEM

CCS-461

< SYSTEM DESCRIPTION >

[LDW & LDP]

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Component Parts Location

INFOID:0000000005502070

Component Description

INFOID:0000000005502071

1.

Lane camera unit
Refer to 

CCS-454, "Component 

Parts Location"

.

2.

TCM
Refer to the following.
VQ35HR: 

TM-11, "Component Parts 

Location"

VK50VE: 

TM-193, "Component 

Parts Location"

3.

BCM
Refer to 

BCS-7, "Component Parts 

Location"

.

4.

ECM
Refer to the following.
VQ35HR: 

EC-31, "Component Parts 

Location"

VK50VE: 

EC-589, "Component 

Parts Location"

5.

Unified meter and A/C amp.
Refer to 

MWI-10, "METER SYSTEM 

: Component Parts Location"

.

6.

AV control unit
Refer to the following.
With single monitor: 

AV-160, "Com-

ponent Parts Location"

With twin monitor: 

AV-365, "Compo-

nent Parts Location"

7.

ICC sensor integrated unit
Refer to 

CCS-27, "Component Parts 

Location"

.

8.

ABS actuator and electric unit (con-
trol unit)
Refer to 

BRC-14, "Component Parts 

Location"

.

9.

Lane departure warning buzzer
Refer to 

CCS-454, "Component 

Parts Location"

.

10. • LDP ON indicator lamp (Green)

• Lane departure warning lamp (Yel-

low)

11.

Steering angle sensor
Refer to 

BRC-14, "Component Parts 

Location"

.

12. Steering switch

(LDP switch)

13. Yaw rate/side G sensor

Refer to 

BRC-14, "Component Parts 

Location"

.

JSOIA0156GB

Component

Description

Lane camera unit

• Detects the lane marker by the built-in camera.
• Judges the lane departure depending on the lane detection result and each signal.
• Transmits the detected lane conditions to ABS actuator and electric unit (control unit) via CAN com-

munication.

• Controls the lane departure warning buzzer, lane departure warning lamp, LDW ON indicator and 

LDP ON indicator lamp.

ABS actuator and electric unit 
(control unit)

• Transmits vehicle speed signal to lane camera unit via CAN communication.
• Judges necessary yaw moment depending on each signal.
• Controls the brake pressure of each wheel individually to generate the intended movement.

Lane departure warning buzz-
er

Gives a warning according to the direction from lane camera unit.

CCS-462

< SYSTEM DESCRIPTION >

[LDW & LDP]

LANE DEPARTURE PREVENTION (LDP) SYSTEM

LDP switch
(On the ICC steering switch)

Inputs the switch signal to ECM.

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.).

LDP ON indicator lamp 
(Green)

Indicates LDP system status.

Lane departure warning lamp 
(Yellow)

• Blinks when LDP is functioning to alert the driver.
• Stays ON when LDW/LDP system is malfunctioning.

BCM

• Transmits turn indicator signal to lane camera unit via CAN communication.
• Transmits vehicle conditions to ABS actuator and electric unit (control unit) via CAN communica-

tion.

ECM

Transmits vehicle conditions and ICC steering switch signal (LDP switch signal) to ICC sensor inte-
grated unit via CAN communication.

Unified meter and A/C amp.

Transmits ambient temperature signal to lane camera unit via CAN communication.

Steering angle sensor

Transmits steering angle sensor signal to ABS actuator and electric unit (control unit) via CAN com-
munication.

TCM 

Transmits vehicle conditions to ABS actuator and electric unit (control unit) via CAN communication.

ICC sensor integrated unit

• Transmits ICC system conditions to ABS actuator and electric unit (control unit) via CAN communi-

cation.

• Transmits LDP ON signal to ABS actuator and electric unit (control unit) via CAN communication.

Yaw rate/side G sensor

Inputs detected yaw rate signal to ABS actuator and electric unit (control unit).

AV control unit

Transmits system selection signal to ICC sensor integrated unit via CAN communication.

Component

Description

CCS

DIAGNOSIS SYSTEM (LANE CAMERA UNIT)

CCS-463

< SYSTEM DESCRIPTION >

[LDW & LDP]

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DIAGNOSIS SYSTEM (LANE CAMERA UNIT)

CONSULT-III Function (LANE CAMERA)

INFOID:0000000005502072

DESCRIPTION

CONSULT-III performs the following functions by communicating with the lane camera unit.

WORK SUPPORT

Cause of Auto-Cancel Display Item List

When LDP control is canceled under the operating condition, “CAUSE OF AUTO-CANCEL” is memorized.
• Last five cancel (system cancel) causes are displayed.
• “CAUSE OF AUTO-CANCEL” displays the number of times of ignition switch ON/OFF up to a maximum of

“39”. “39” is kept even when the number exceeds “39”. The number returns to 0 when detecting the same
cancellation causes are detected. 

Select diag mode 

Function

Work support

• Performs the camera aiming.
• Displays causes of automatic cancellation of the LDP function.

Self Diagnostic Result

Displays memorized DTC in the lane camera unit.

Data Monitor

Displays real-time data of lane camera unit.

Active Test

Enables operation check of electrical loads by sending driving signal to them.

Ecu Identification

Displays part number of lane camera unit.

Work support item

Function

CAUSE OF AUTO-CANCEL

Indicates causes of automatic cancellation of the LDP.

AUTO AIM

Outputs camera unit, calculates dislocation of the camera, and displays adjustment direction. 
Refer to 

CCS-445, "CAMERA AIMING ADJUSTMENT : Description"

.

Cause of cancellation

Description

NO RECORD

—

Operating VDC/ABS

VDC or ABS function was operated.

Vehicle dynamics

Vehicle behavior exceeds specified value.

Steering speed

Steering speed was more than the specified value in evasive direction.

End by yaw angle

Yaw angle was the end of LDP control.

Departure yaw large

Detected more than the specified value of yaw angle in departure direction. 

ICC WARNING

Target approach warning of ICC system or IBA system was activated.

VDC OFF SW

VDC OFF switch was pressed.

CURVATURE

Road curve was more than the specified value.

Steering angle large

Steering angle was more than the specified value.

ICC main SW hold ON

ICC MAIN switch was held ON for more than a certain period.

Brake is operated

Brake pedal was operated.

Lateral offset

Distance of vehicle and lane was detached in lateral direction more than the specified value.

Lane marker lost

Lane camera unit lost the trace of lane marker.

Lane marker unclear

Detected lane marker was unclear.

Bank

Road bank angle was more than the specified value.

Yaw acceleration

Detected yawing speed was more than the specified value.

Deceleration large

Deceleration in a longitudinal direction was more than the specified value.

Accel is operated

Accelerator pedal was depressed.

Departure steering

Steering wheel was steered more than the specified value in departure direction.