Intuitive Parking Assist System (Diagnostics - Introduction): Other Lexus GS III рестайлинг

PRECAUTION

1. NOTICE FOR INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See procedure Theft Deterrent System Refer to «INITIALIZATION»(ref-386951-S21829001392011022400000) Intuitive Parking Assist System Variable Gear Ratio Steering System
2. PRECAUTIONS FOR INTUITIVE PARKING ASSIST SYSTEM Under the following conditions, the detection function may not function properly: The sensor is covered with foreign matter, such as mud or snow (detection function returns to normal if sensor is cleaned). The sensor is frozen (detection function returns to normal when defrosted). A hand is blocking the sensor. HINT: In very cold weather where a malfunction display appears, the sensor may not detect obstacles. If the malfunction display appears, visually check the sensor first. If the sensor is free of foreign matter but the malfunction display remains, the sensor may have a malfunction. The detection range may be affected by the following conditions: The sensor is covered with foreign matter, such as mud or snow. The vehicle is in a very hot or cold area. Under the following conditions, a detection error may occur: Driving on a bumpy road, on an unpaved road or in tall grass. Another vehicle's horn, motorcycle engine sounds, a large vehicle's air brake sound, another vehicle's sonar or other things that transmit ultrasonic waves are near the vehicle. It is raining heavily or water is sprayed on the sensor. The vehicle is extremely tilted. The vehicle is equipped with a commercial fender pole or a wireless mechanism antenna. The sensor is covered with foreign matter, such as mud or snow. The vehicle is moved forward or backward towards high curbs or objects that are perpendicular to the ground. The sensor cannot detect the following objects: Thin objects, such as wires and ropes. Materials that easily absorb ultrasonic waves, such as cotton, snow, etc. Objects with sharp edges. Short objects. Tall objects with a projected upper part. Other objects. Other notices: The sensor cannot detect objects directly under the bumper. (The sensor may detect low objects and thin poles, and then lose track of the objects.) The sensor may be unable to detect obstacles that are too close to the sensor. The sensor may be unable to detect obstacles if it is dropped or subjected to a strong impact.
3. PRECAUTIONS FOR STEERING SENSING FUNCTION Under the following conditions, the steering sensing function may not operate properly: The vehicle is equipped with tires of the wrong size specification. The steering angle mid-point is not set properly. If the system has any of the following malfunctions, it operates in normal clearance sonar mode: Area information cannot be detected due to one of the following: 1) a depleted vehicle battery, 2) a steering angle sensor malfunction, or 3) a variable gear ratio steering system malfunction. A malfunction is detected in a sensor (sensor is frozen or has an open circuit). Whether the steering wheel is centered or not cannot be detected.

Scheme 52

Scheme 53

Scheme 54

INPUT SIGNAL TO CLEARANCE WARNING ECU

OUTPUT SIGNAL FROM CLEARANCE WARNING ECU

Scheme 55

1. GENERAL When the vehicle is driven at 10 km/h (6 mph) or less, the ultrasonic sensors on the front and rear bumper detect obstacles near the vehicle. Based on signals from the steering angle sensor, the ultrasonic sensors perform a collision/avoidance judgment. Then they communicate the information through the multi-display, multi-information display, and buzzer.
2. FUNCTION OF COMPONENTS Components Function Ultrasonic sensor Transmits ultrasonic waves to detect obstacles near vehicle and outputs signal to clearance warning ECU Clearance sonar main switch Built into integration control and panel Outputs system ON / OFF signals to clearance warning ECU via BEAN Clearance warning buzzer Sounds according to commands from clearance warning ECU Clearance warning ECU Receives signals from various systems and determines system operation condition Amplifies and processes sent and received ultrasonic waves, makes judgments about obstacles, controls indicator light and warning buzzer, and detects sensor malfunctions Steering angle sensor Built into steering column Outputs steering angle and direction signals (avoidance judgment condition) to clearance warning ECU via CAN Combination meter Receives vehicle speed signal (system operation condition) from skid control ECU, and then outputs it to clearance warning ECU via BEAN. Combination meter then receives information from clearance warning ECU through BEAN communication, and detection information is displayed on multi-information display and multi-display. Steering control ECU Outputs variable gear ratio steering signal (in either steering direction) to clearance warning ECU via CAN Multi-display Receives information from clearance warning ECU through BEAN and AVC-LAN, and then displays detection information Park/Neutral position switch Outputs shift lever position information (system operation condition) to clearance warning ECU via BEAN
3. OPERATION EXPLANATION This system has a steering sensing mode and a normal clearance sonar mode. Steering sensing mode The ultrasonic sensors on the front bumper estimate the distance to an obstacle, and the angle of the obstacle in relation to the vehicle. When the sensor receives information about the obstacle and signals from the steering angle sensor, and the obstacle is within the sensor's detection area, an approximate collision/avoidance judgment is made (to be used as an estimate to increase the possibility of avoiding a collision), and the information is communicated through the displays and buzzer. HINT: The displays mentioned above, refer to multi-information display and multi-display. see scheme 17 Refer to «OPERATION CHECK»(ref-387168-S36657764622011022400000). Normal clearance sonar mode All obstacles in the sensor detection range are detected regardless of the information from the steering angle sensor. Conditions in which system will change to normal clearance sonar mode "Normal clearance sonar mode" is selected using customization function Sensor(s) are malfunctioning Steering angle sensor signal and variable gear ratio steering signal stop When performing mid-point learning operation Normal clearance sonar mode detection range HINT: The value within the [ ] marks is a customization setting.