System Description
PARK ASSIST / MONITORING: ADVANCED PARKING GUIDANCE SYSTEM: SYSTEM DESCRIPTION
1. GENERAL
(a) The parking assist ECU uses vehicle condition signals from the spiral cable with sensor sub-assembly, power steering ECU, skid control ECU, power management control ECU, etc. to make calculations and estimates. These results are used to make various guide lines, which are combined together with video from the rear television camera, and output to the navigation computer sub-assembly. Also, control signals are output to each ECU and various advanced parking guidance system controls are performed.
(b) This system has a rear television camera assembly mounted on the back door to display an image of the area behind the vehicle on the navigation computer sub-assembly display. The display panel also shows a composite view consisting of the area behind the vehicle and parking guide lines to assist the driver in parking the vehicle by monitoring the area behind the vehicle.
(c) This system is equipped with a self-diagnosis system, which is operated on a designated window that appears on the display panel, just as in the navigation system.
2. FUNCTION OF COMPONENTS
(a) The parking assist ECU controls the system by using information from the following components.
3. OPERATION EXPLANATION
(a) The parking assist ECU receives the rear television camera assembly activation information from the navigation computer sub-assembly. Then, the parking assist ECU switches the display signal for the navigation computer sub-assembly from the navigation system to the advanced parking guidance system.
4. SWITCHING OF ADVANCED PARKING GUIDANCE DISPLAY MODE
(a) When either the navigation or information display is shown and the shift lever is moved to R with a shift state other than reverse (R) previously selected, the display switches to the advanced parking guidance display and the advanced parking guidance system on/off button is shown. Under this condition, the advanced parking guidance system display and guide line display are alternately selected each time the button is pressed
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5. DISPLAY MODE SETTING
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(a) While the guide line mode monitor is displayed, pressing the line mode button switches the guide line mode monitor display mode.
Guide Line Mode Monitor Display Mode
6. PRE SUPPORT FUNCTION
(a) Function Description
(1) A pre support function is provided to assist the driver with initial positioning of the vehicle when backing-in mode or parallel parking mode operation is used.
(b) Pre Support Function Operation Condition
(1) For the pre support function, when the advanced parking guidance system is operating normally (no DTCs are stored) and the following conditions are met, pressing the parking assist pre support switch assembly changes the image displayed on the screen and pre support operation starts.
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* *1: A tone sounds when the screen transfers.
(c) Backing-in Mode Operation
(1) Press the parking assist pre support switch assembly before the target parking space to turn on the pre support function (backing-in mode).
(2) Drive the vehicle slowly while keeping a distance of approximately 1 m (3.3 ft.) from and perpendicular to the target parking space or vehicles around the target parking space. When the ultrasonic sensor (No. 1 ultrasonic sensor) detects an available parking space, start to turn the steering wheel from the straight ahead position when the tone sounds.
HINT
* An available parking space may not be detected by the ultrasonic sensor (No. 1 ultrasonic sensor) depending on the distance between the vehicle being parked and the target parking space or vehicles around the target parking space, vehicle orientation and vehicle speed.
* A target parking space may not be detected by the ultrasonic sensor (No. 1 ultrasonic sensor) depending on the conditions around the target parking space. For details, refer to Precautions for the parking space detection sensor Advanced Parking Guidance System.
* When the ultrasonic sensor (No. 1 ultrasonic sensor) cannot detect a target parking space, a tone will not sound.
(3) Drive the vehicle while turning the steering wheel and when the vehicle reaches the support start position (the tone will sound twice), stop the vehicle, return the steering wheel to the straight ahead position, and move the shift lever to R.
(4) When the advanced parking guidance screen is displayed, the target parking frame will also be displayed for the target parking space that is detected by the ultrasonic sensor (No. 1 ultrasonic sensor) during the pre support function operation.
(d) Parallel Parking Mode Operation
(1) Press the parking assist pre support switch assembly before the target parking space to turn on the pre support function (parallel parking mode).
(2) Drive the vehicle slowly while keeping a distance of approximately 1 m (3.3 ft.) from and parallel to the target parking space or vehicles around the target parking space to allow the ultrasonic sensor (No. 1 ultrasonic sensor) to start detection.
HINT
* For parallel parking mode, a tone will not sound when the ultrasonic sensor (No. 1 ultrasonic sensor) detects the available parking space.
* An available parking space may not be detected by the ultrasonic sensor (No. 1 ultrasonic sensor) depending on the distance between the vehicle being parked and the target parking space or vehicles around the target parking space, vehicle orientation and vehicle speed.
* A target parking space may not be detected by the ultrasonic sensor (No. 1 ultrasonic sensor) depending on the conditions around the target parking space. For details, refer to Precautions for the parking space detection sensor Advanced Parking Guidance System.
(3) Drive as is and stop the vehicle when the vehicle reaches the support start position (the tone will sound twice), and move the shift lever to R.
HINT
When the ultrasonic sensor (No. 1 ultrasonic sensor) cannot detect a target parking space, the tone will not sound.
(4) When the advanced parking guidance screen is displayed, the target parking frame will also be displayed for the target parking space that is detected by the ultrasonic sensor (No. 1 ultrasonic sensor) during the pre support function operation.
7. EASY SET FUNCTION (ONLY WHEN PARKING)
HINT
* Under the following conditions, the easy set function may not operate because parking lines (white) cannot be recognized:
* Parking spaces without parking lines (parking spaces marked with rope, blocks etc.)
* Unclear, dirty or chipped parking lines
* Parking spaces with lines that are difficult to differentiate from the road surface due to a small brightness difference (such as yellow lines on concrete)
* Under the following conditions, the easy set function may misrecognize a target parking space:
* Parking spaces with interfering lines or objects (lines other than parking lines or obstacles such as poles)
* Parking spaces on a slope
* If detection of the space is affected by nearby vehicles (such as the shadow, grill or side step of a nearby vehicle)
* Unclear, dirty or chipped parking lines
* Parking spaces with lines that are difficult to differentiate from the road surface due to a small brightness difference (such as yellow lines on concrete)
(a) Move the shift lever to R
HINT
* Advanced parking guidance system ON/OFF button is on.
* Parking assist pre support switch assembly has not been pressed.
(b) A short sound is emitted when the system recognizes a parking space. After this, when OK on the navigation screen is selected, the system starts parking assist.
8. COMMUNICATION SYSTEM OUTLINE
(a) The components of the advanced parking guidance system communicate with each other through the AVC-LAN.
(b) If a short circuit or open circuit occurs in the AVC-LAN, communication is interrupted and this system will stop functioning.
9. DIAGNOSTIC FUNCTION OUTLINE
(a) This advanced parking guidance system has a diagnostic function displayed on the navigation computer sub-assembly. This function enables the calibration (adjustment and verification) of the advanced parking guidance system Calibration.
(b) The following items for the advanced parking guidance system can be checked using the Techstream.
