Lexus NX: System Description

SYSTEM DESCRIPTION

GENERAL

(a) This system has front, passenger side, driver side and rear television camera assemblies mounted around the vehicle to display around the vehicle on the multi-display assembly. The display panel also shows a composite view consisting of the area behind the vehicle and parking guidelines to assist the driver in parking the vehicle by monitoring the area around the vehicle.

(b) This system consists of the following components:

(1) Parking assist ECU

(2) No. 2 combination switch assembly (panoramic view monitor main switch)

(3) Rear television camera assembly

(4) Front television camera assembly

(5) Side television camera assembly LH

(6) Side television camera assembly RH

(7) Radio receiver assembly

(8) Multi-display assembly

(9) Steering sensor

(10) Brake booster with master cylinder assembly (skid control ECU)

(11) Main body ECU (multiplex network body ECU)

(12) Clearance warning ECU assembly

(13) Hybrid vehicle control ECU

(14) Blind spot monitor sensor LH*

(15) Park/neutral position switch assembly

(c) This system is equipped with a self-diagnosis system, which is operated from a designated window that appears on the display panel, just as in the audio and visual system*1 or navigation system*2.

FUNCTION OF COMPONENTS

(a) The parking assist ECU controls the system by using information from the following components.

Item	Function
Rear Television Camera Assembly	Mounted on the back door to transmit the rear view of the vehicle to the parking assist ECU. Has a color video camera that uses a Complementary Metal Oxide Semiconductor (CMOS) and a wide-angle lens
Front Television Camera Assembly	Generates a video feed showing the front side of the vehicle and transmits the video to the parking assist ECU
Side Television Camera Assembly LH	Generates a video feed showing the left side of the vehicle and transmits the video to the parking assist ECU
Side Television Camera Assembly RH	Generates a video feed showing the right side of the vehicle and transmits the video to the parking assist ECU
Parking Assist ECU	Turns the panoramic view monitor system ON and OFF according to the display conditions, based on the received panoramic view monitor main switch signals, shift position signals, and vehicle speed signals Sends the display request signals for the panoramic view and wide front view screen, panoramic view and side clearance view screen, panoramic view and cornering view screen, panoramic view and rear view screen, panoramic view and wide rear view screen, see through view screen, or moving view screen to the multi-display assembly according to the display conditions, based on the received panoramic view monitor main switch signals, shift position signals, and vehicle speed signals Sends the display switching request signals for the panoramic view and wide front view screen, panoramic view and side clearance view screen, panoramic view and cornering view screen, panoramic view and rear view screen, panoramic view and wide rear view screen, see through view screen, or moving view screen to the multi-display assembly according to the display conditions, based on the received outer mirror retraction signals Displays the composite image of the surrounding area images taken by each camera and the image calculated from vehicle status information such as the steering angle signals on the multi-display assembly screen Renders each configuration page in the diagnosis window and outputs the screen to the multi-display assembly Stops displaying the buttons and guidelines on the panoramic view and rear view monitor screen, or panoramic view and wide back view monitor screen when the screen is being displayed and a back door open status signal is received Stores each configuration setting from the diagnosis window
No. 2 Combination Switch Assembly (panoramic view monitor main switch)	Sends switch operation signals to the parking assist ECU
Radio Receiver Assembly	Allows remote touch panel operations when the panoramic view monitor screen or diagnosis screen is displayed
Steering Sensor	Sends the steering angle signals and sensor status signals to the parking assist ECU via the CAN communication system
Brake Booster with Master Cylinder Assembly (Skid Control ECU)	Sends the vehicle speed signals, drive type signals, and system status signals to the parking assist ECU via the CAN communication system
Hybrid Vehicle Control ECU	Sends the engine model signals, and system status signals to the parking assist ECU via the CAN communication system Sends the shift position signals to the parking assist ECU via the CAN communication system
Main Body ECU (Multiplex Network Body ECU)	Sends the back door courtesy light switch signal to the parking assist ECU via the CAN communication system. Sends the mirror retract request signal to the parking assist ECU via the CAN communication system
Clearance Warning ECU Assembly	Sends information from each sonar via the CAN communication system

Panoramic View Screen Display

(a) See-through view screen

(1) The entire area surrounding the vehicle is displayed.

*a

Vehicle interior view

*b

Upper view

(b) Moving view screen

(1) The entire area surrounding the vehicle is displayed.

*a

Slant upper view

*b

Upper view

(c) Panoramic view and cornering view screen

(1) If the steering wheel is turned approximately 180° or more from the straight condition, the system automatically changes from the side clearance view to the cornering view.

The cornering view is displayed until the steering wheel is turned back within 90° of the straight condition.

*a

When turning left

*b

When turning right

HINT:

Cornering view does not display when the vehicle speed is 12 km/h (7 mph) or more.

Panoramic View and Cornering View Screen Description

Signal	Name	Color
(1)	Front distance guide line	Blue
(2)	Front wheel ground contact line	Gray
(3)	Vehicle width parallel line	Gray
(4)	Forward estimated course line	Yellow

(d) Panoramic view and wide front view screen

*a

Estimated course line display mode

*b

Distance guide line display mode

Panoramic View and Wide Front View Screen Description

Signal	Name	Color	Panoramic View and Wide Front View Screen
			Estimated course line display mode	Distance guide line display mode
(1)	Front distance guide line	Blue	Displayed	Displayed
(2)	Front wheel ground contact line	Yellow	Displayed	Not displayed

(e) Panoramic View and Side Clearance View Screen

*a

When the outer rear view mirror assembly is deployed.

-

-

Panoramic View and Side Clearance View Screen Description

Signal	Name	Color
(1)	Front distance guide line	Blue
(2)	Front wheel ground contact line	Gray
(3)	Vehicle width parallel line	Gray

(f) Panoramic view and wide rear view screen

*a	Estimated course line display mode	*b	Parking guide line display mode
*c	Distance guide line display mode	*d	Display mode switching button
*e	Guide line display mode switching button	-	-

HINT:

The screen changes to the panoramic view and rear view screen when the display mode switch button or rear view screen is selected.

Panoramic View and Wide Rear View Screen Description

Signal	Name	Color	Panoramic View and Wide Rear View Screen
			Estimated course line display mode	Parking guide line display mode	Distance guide line display mode
(1)	Front distance guide line	Blue	Displayed	Displayed	Displayed
(2)	Rear distance guide line	Red/Black	Displayed	Displayed	Displayed
(3)	Rear vehicle width extension line	Blue	Displayed	Displayed	Not displayed
(4)	Parking guide line	Blue	Not displayed	Displayed	Not displayed
(5)	Rear distance guide line	Blue	Displayed	Not displayed	Not displayed
(6)	Side estimated course line	Yellow	Displayed	Not displayed	Not displayed
(7)	Rear estimated course line	Yellow	Displayed	Not displayed	Not displayed
(8)	Vehicle center line	Blue	Displayed	Displayed	Not displayed

(g) Panoramic view and rear view screen

*a	Estimated course line display mode	*b	Parking guide line display mode
*c	Distance guide line display mode	*d	Guide line display mode switching button
*e	Guide line display mode switching button	-	-

HINT:

In the rear view screen, the screen display mode can be switched by pressing the guide line display mode switching button or rear view screen on the screen.

Panoramic View and Rear View Screen Description

Signal	Name	Color	Panoramic View and Rear View Screen
			Estimated course line display mode	Parking guide line display mode	Distance guide line display mode
(1)	Front distance guide line	Blue	Displayed	Displayed	Displayed
(2)	Rear distance guide line	Red/Black	Displayed	Displayed	Displayed
(3)	Rear vehicle width extension line	Blue	Displayed	Displayed	Not displayed
(4)	Parking guide line	Blue	Not displayed	Displayed	Not displayed
(5)	Rear distance guide line	Blue	Displayed	Not displayed	Not displayed
(6)	Side estimated course line	Yellow	Displayed	Not displayed	Not displayed
(7)	Rear estimated course line	Yellow	Displayed	Not displayed	Not displayed
(8)	Vehicle center line	Blue	Displayed	Displayed	Not displayed

(h) Side view screen

*a	Side view and wide front view screen	*b	Side view and rear view screen
*c	Side view and wide rear view screen	-	-

HINT:

Refer to the content of panoramic view and rear view screen and panoramic view and wide front view screen for information about the rear view and wide front view screens.

Panoramic View Screen Description

(a) Manual display mode

(1) When the No. 2 combination switch assembly (panoramic view monitor main switch) is pressed with the power switch on (IG) or (READY), the panoramic view monitor system switches to a screen shown below according to the shift lever position.

Screen Transition Chart (Manual Display Mode)

*a	Shift lever not in P or R	*b	Shift lever in P and Intuitive parking assist system on
*c	Shift lever in R	*d	Panoramic view and wide front view screen
*e	Panoramic view and side clearance view screen	*f	Panoramic view and cornering view screen
*g	See-through view screen	*h	Moving view screen
*i	Panoramic view and rear view screen	*j	Panoramic view and wide rear view screen
*k	Navigation screen, etc.	-	-

Screen Transition Conditions (Manual Display Mode)

No.	Screen Transition Conditions
(1)	Panoramic view monitor main switch is pressed
(2)	Shift lever is moved to R
(3)	Shift lever is moved to other than P or R
(4)	Shift lever is moved to other than P or R and operation (1) is performed
(5)	"MAP/VOICE" switches, etc. on the multi-display assembly are pressed
(6)	Operation (1) is performed with the shift lever in P
(7)	Shift lever is moved to P
(8)	Switch image mode button or rear view screen is selected
(9)	Switch image mode button or wide rear view screen is selected
(10)	Moving view switch button is selected
(11)	See through view switch button is selected
(12)	When the steering wheel is moved to the approximately 180° or more from the straight condition
(13)	The steering wheel is moved approximately 90° or less from the straight condition

HINT:

If the panoramic view monitor main switch is pressed at a vehicle speed of approximately 12 km/h (7 mph) or lower, the panoramic view monitor system screen is displayed. If the vehicle speed exceeds approximately 12 km/h (7 mph), the display switches to the navigation screen or information settings screen.

(b) Screen transition chart (automatic display mode)

(1) When the shift lever is not in P or R, in addition to switching screens by pressing the No. 2 combination switch assembly (panoramic view monitor main switch), the automatic display mode can be selected by pressing the automatic display mode switching button.

*a	Panoramic view and wide front view screen	*b	Panoramic view and side clearance view screen
*c	Automatic display mode	-	-

Automatic Display Mode Switching Button (Indicator in Button)	Screen Switching Mode
ON (Illuminated)	Automatic display mode
OFF (Not illuminated)	Manual display mode

(2) The automatic display mode automatically switches the display according to the vehicle status.

Screen Transition Chart (Automatic Display Mode)

*a	Shift lever not in P or R	*b	Panoramic view and wide front view screen
*c	Panoramic view and side clearance view screen	*d	Navigation screen, etc.

Screen Transition Conditions (Automatic Display Mode)

No.	Screen Transition Conditions
*: The panoramic view and wide front view screen is the first screen displayed after the power switch was turned off.
(1)	No. 2 combination switch assembly (panoramic view monitor main switch) is pressed
(2)	Current location switches, etc. on the multi-display are pressed
(3)	Vehicle speed changes from above approximately 10 km/h (6 mph) to approximately 10 km/h (6 mph) or lower. The screen that was last displayed is displayed on the multi-display assembly.*
(4)	Vehicle speed changes from approximately 10 km/h (6 mph) or lower to above approximately 10 km/h (6 mph)

(c) Panoramic View Zoom Function

(1) When detail within the image on the panoramic view screen is too small and difficult to see, the user can magnify the image by selecting one of the 4 areas on the panoramic view screen.

Screen Transition

*a	Panoramic view and wide front view screen displayed while shift lever is not in P or R	*b	Panoramic view and rear view screen displayed
*c	Panoramic view and wide front view screen	*d	Panoramic view and wide front view screen (Front left view magnified)
*e	Panoramic view screen	*f	Panoramic view and rear view screen
*g	Panoramic view and rear view screen (Front left view magnified)	-	-

Screen Transition Conditions

No.	Screen Transition Conditions
(1)	Any of the 2 areas on the panoramic view screen is selected while the vehicle speed is approximately 12 km/h (7 mph) or less and the Intuitive parking assist system is turned on.
(2)	The remote touch switch is pressed on the panoramic view zoom screen, or either of the following conditions is met: The vehicle speed changes from approximately 12 km/h (7 mph) or less to over approximately 12 km/h (7 mph). The Intuitive parking assist system is turned off.

(d) When the outer rear view mirror assembly is retracted

(1) When the outer rear view mirrors are retracted, the screen changes according to the current screen display, as follows.

Screen Transition

*a	See through view screen	*b	Moving view screen
*c	Panoramic view and wide front view screen	*d	Panoramic view and side clearance view screen
*e	Panoramic view and rear view screen	*f	Panoramic view and wide rear view screen
*g	Side view and wide front view screen	*h	Side view and rear view screen
*i	Side view and wide rear view screen	-	-

Screen Transition Conditions

No.	Screen Transition Conditions
(1)	When outer rear view mirror assembly is retracted

OPERATION EXPLANATION

(a) The reverse position signal is sent from the shift lever position switch to the parking assist ECU when the shift lever is moved to R.

(b) An appropriate steering angle and timing information can be provided for the driver. This is based on the information from the steering angle sensor signal and the vehicle angle data signal that are sent to the parking assist ECU.

HINT:

The steering angle sensor signal is used to control parking assist only for estimated guide line mode.

COMMUNICATION SYSTEM OUTLINE

(a) CAN communication system

(1) The panoramic view monitor system uses CAN communication for data communications between the parking assist ECU and each ECU.

(2) If a problem occurs in the CAN communication line, the parking assist ECU outputs a CAN communication malfunction DTC. (To check, use the Techstream.)

Click here

(3) If a problem occurs in the CAN communication line, the parking assist ECU outputs a CAN communication malfunction DTC. (To check, use the multi-display assembly diagnosis screen.)

Click here

(4) If a CAN communication line malfunction DTC is output, repair the malfunction in the communication line and troubleshoot the panoramic view monitor system when data communication is normal.

(5) Since the CAN communication line has its own length and route, it cannot be repaired temporarily with a bypass wire, etc.

VIDEO SIGNALS

(a) Video signal circuit

(1) Video signals from the front television camera assembly are input into the parking assist ECU via analog communication lines (vehicle wire harness).

(2) Video signals from the side television camera assembly LH are input into the parking assist ECU via analog communication lines (vehicle wire harness).

(3) Video signals from the side television camera assembly RH are input into the parking assist ECU via analog communication lines (vehicle wire harness).

(4) Video signals from the rear television camera assembly are input into the parking assist ECU via analog communication lines (vehicle wire harness).

(5) Video signals from the parking assist ECU are input into the multi-display assemly via GVIF cable.

(b) Screen display

(1) Video signals input from each camera are processed in the parking assist ECU and displayed on the multi-display assembly as the panoramic view monitor system screen.

DIAGNOSTIC FUNCTION OUTLINE

(a) This panoramic view monitor system has a diagnostic function displayed in the multi-display assembly. This function enables the calibration (adjustment and verification) of the panoramic view monitor system.

Click here

(b) The panoramic view monitor system can check the following items by using the Techstream.

Item	Proceed to
DTC
Data List / Active Test

CALIBRATION

(a) Use the panoramic view monitor system diagnosis screen for calibration and checking of the panoramic view monitor system.

Click here

NOTICE:

Part replacement and work performed during servicing may require calibration of the panoramic view monitor system and other systems.

Click here

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