Advanced Parking Guidance System

PARK ASSIST / MONITORING: ADVANCED PARKING GUIDANCE SYSTEM: SYSTEM DIAGRAM

SYSTEM DESCRIPTION

1. GENERAL

(a) The parking assist ECU uses vehicle condition signals from the steering angle sensor, power steering ECU, skid control ECU, ECM, etc. to make calculations and estimates. These results are used to make various guidelines, which are combined together with video from the television camera assembly, and output to the display and navigation module display. Also, control signals are output to each ECU and the advanced parking guidance system's various controls are performed.

(b) This system has a television camera to display an image of the area behind the vehicle on the display and navigation module display. The display panel also shows a composite view consisting of the rear view and parking guidelines to assist the driver with parking the vehicle.

(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 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 ECM, through the CAN communication system, sends the R position signal from the shift lever position sensor to the parking assist ECU when the shift lever is moved to R.

After receiving the R position signal, the parking assist ECU switches the display signal for the display and navigation module display from the navigation system to the advanced parking guidance system.

4. PRE SUPPORT FUNCTION

(a) Function Description

(1) A pre support function is provided to assist the driver with initial positioning of the vehicle when back-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 changes the image displayed on the screen and pre support operation starts.

* *: A tone sounds when the screen changes.

(1) Press the parking assist pre support switch before the target parking space to turn on the pre support function (parallel parking mode).

(2) Drive the vehicle slowly and parallel to the target parking space or vehicles around the target parking space while keeping a distance of approximately 1 m (3.3 ft.) in order to start the detection function of the No. 2 ultrasonic sensor.

HINT
* For parallel parking mode, a tone will not sound when the No. 2 ultrasonic sensor detects the available parking space.
* An available parking space may not be detected by the No. 2 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 No. 2 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 then move the shift lever to R.

HINT
When the No. 2 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 space detected by the No. 2 ultrasonic sensor during the pre support function operation is displayed with the target parking frame.

(d) Back-in Mode Operation

(1) Press the parking assist pre support switch before the target parking space to turn on the pre support function (back-in mode).

(2) Drive the vehicle slowly and perpendicular to the target parking space or vehicles around the target parking space while keeping a distance of approximately 1 m (3.3 ft.). When the No. 2 ultrasonic sensor detects an available parking space, turn the steering wheel from the straight ahead position to the left or right as necessary when the tone sounds.

HINT
* An available parking space may not be detected by the No. 2 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 No. 2 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 No. 2 ultrasonic sensor cannot detect a target parking space, a tone will not sound.
(3) Drive the vehicle while turning the steering wheel until the vehicle reaches the support start position (the tone will sound twice), and then 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 displayed for the target parking space that is detected by the No. 2 ultrasonic sensor during the pre support function operation.

5. COMMUNICATION SYSTEM OUTLINE

(a) The components of the advanced parking guidance system communicate with each other through the AVC-LAN. Also, "PARALLEL PARKING ASSIST MODE" judges the vehicle angle data transmitted via AVC-LAN from the navigation ECU. The data is calculated by the navigation ECU by integrating the yaw rate of the gyro built into the navigation ECU.

(b) If a short or open circuit occurs in the AVC-LAN circuit, communication is interrupted and the advanced parking guidance system will stop functioning.

6. DIAGNOSTIC FUNCTION OUTLINE

(a) This advanced parking guidance system has a diagnostic function displayed an the display and navigation module display. This function enables calibration (adjustment and verification) of the advanced parking guidance system Calibration.

(b) The following items can be checked by using the Techstream.