INTUITIVE PARKING ASSIST SYSTEM

FUNCTION OF MAIN COMPONENTS

Component	Function
Clearance Warning ECU Assembly	Judges the approximate distance between the vehicle and an obstacle based on signals from the No. 1 ultrasonic sensors. Output signals are sent to the multi-information display. Sounds the No. 1 clearance warning buzzer.
No. 1 Ultrasonic Sensor (6)	Detects the distance between the vehicle and an obstacle.
No. 1 Clearance Warning Buzzer	Sounds to inform the driver according to the distance to the obstacle.
Combination Meter Assembly - Multi-information Display	Displays the location of the obstacle and the approximate distance between the vehicle and the obstacle. Displays an indication of malfunction or freezing of a No. 1 ultrasonic sensor to inform the driver.
Back Sonar or Clearance Sonar Switch Assembly	Operating this switch allows the operation of intuitive parking assist-sensor system to be enabled or disabled.
Air Conditioning Amplifier Assembly	Sends outside temperature information to the clearance warning ECU assembly to adjust the distance rate from the No. 1 ultrasonic sensors.
Main Body ECU (Multiplex Network Body ECU)	Sends model destination information (information to indicate the market the vehicle was built for - such as Canada) to the clearance warning ECU assembly.
Power Management Control ECU	Transmits the shift position signals to the clearance warning ECU assembly.

OPERATING CONDITION

The operating condition of each sensor differs according to its installed position as shown in the table below:

Installation Position	Operating Condition
Front Corner	Power switch is on (IG). System is activated. Shift lever is in a position other than P. Vehicle speed is approximately 10 km/h (6 mph) or less.
Rear Corner	Power switch is on (IG). System is activated. Shift lever is in R.
Rear Center	Power switch is on (IG). System is activated. Shift lever is in R.

CONSTRUCTION

No. 1 Ultrasonic Sensor

The No. 1 ultrasonic sensors consist of a microphone and a circuit portion that transmits and receives ultrasonic waves.

The circuit portion is filled with urethane to prevent water from entering.

Text in Illustration
*1	Circuit Portion	*2	Microphone
*a	A-A Cross Section	-	-

OPERATION

No. 1 Clearance Warning Buzzer

Depending on the detection distance and the detection area, the sound pattern of the No. 1 clearance warning buzzer will vary.

Detection Area	Detection Distance (mm (in.))		Buzzer Sound Pattern
Detection Area	Detection Distance (mm (in.))		On (msec.)	Off (msec.)
Front Corner	Long	500 +/- 50 to 400 +/- 40 (19.7 +/- 2.0 to 15.7 +/- 1.6)	150 +/- 15	150 +/- 15
	Middle	400 +/- 40 to 300 +/- 30 (15.7 +/- 1.6 to 11.8 +/- 1.2)	75 +/- 7.5	75 +/- 7.5
	Short	300 +/- 30 or less (11.8 +/- 1.2 or less)	Continuous Sound	0
Rear Corner	Long	600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0)	150 +/- 15	150 +/- 15
	Middle	450 +/- 50 to 300 +/- 30 (17.7 +/- 2.0 to 11.8 +/- 1.2)	75 +/- 7.5	75 +/- 7.5
	Short	300 +/- 30 or less (11.8 +/- 1.2 or less)	Continuous Sound	0
Rear Center	Longest	1500 +/- 150 to 600 +/- 60 (59.1 +/- 5.9 to 23.6 +/- 2.4)	150 +/- 1.5	650 +/- 65
	Long	600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0)	150 +/- 1.5	150 +/- 1.5
	Middle	450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6)	75 +/- 7.5	75 +/- 7.5
	Short	350 +/- 40 or less (13.8 +/- 1.6 or less)	Continuous Sound	0

The No. 1 ultrasonic sensors are divided into 2 groups: a front section group (front corners) and a rear section group (rear corners and rear centers). If multiple No. 1 ultrasonic sensors detect obstructions at the same time, the No. 1 clearance warning buzzer sounds as follows, in accordance with the detection distance and detection area of each group:

Buzzer Sound Pattern ON/OFF Time (msec.)
Detection Distance	Short (*A)	Middle (*A)	Long (*A)	Not detected
Short (*B)	Timing 1	Timing 2	Timing 2	Continuous Sound/0
Middle (*B)	Timing 2	75/75	75/75	75/75
Long (*B)	Timing 2	75/75	150/150	150/150
Longest (*B)	Timing 2	75/75	150/150	150/650
Not detected	Continuous Sound/0	75/75	150/150	None

*A: Front section
*B: Rear section

Multi-information Display

The items displayed by the multi-information display are the location of the obstacle and the approximate distance between the vehicle and the obstacle.

The number of lines shown on the display changes based on the actual distance and flashes when the distance is short.

Text in Illustration
*1	Front Corner LH	*2	Front Corner RH
*3	Rear Corner LH	*4	Rear Corner RH
*5	Rear Center	*6	Distance
*7	Longest	*8	Long
*9	Middle	*10	Short
*11	Flashes	-	-

The items displayed by the multi-information display are warning messages relating to No. 1 ultrasonic sensor malfunction, No. 1 ultrasonic sensor freezing, or presence of dirt on the No. 1 ultrasonic sensor.

Text in Illustration

*1 Malfunctioning *2 Frozen/Dirty

Text in Illustration
*1	Malfunctioning	*2	Frozen/Dirty

Detection Area

The detection areas of the No. 1 ultrasonic sensor are as shown in the following illustration.

These detection areas are applicable when positioning a 60 mm (2.36 in.) diameter pole parallel or perpendicular to the ground. The ranges vary depending on the measuring method and type of obstacle.

Text in Illustration (Corner Area:)
*a	Approximately 700 mm (27.6 in.)	*b	Approximately 750 mm (29.5 in.)
*c	Approximately 500 mm (19.7 in.)	*d	Approximately 600 mm (23.6 in.)
*e	Approximately 400 mm (15.7 in.)	*f	Approximately 400 mm (15.7 in.)
*g	Approximately 200 mm (7.9 in.)	-	-

Text in Illustration (Rear Center Area:)
*a	Approximately 1800 mm (70.9 in.)	*b	Approximately 200 mm (7.9 in.)
*c	Approximately 1000 mm (39.4 in.)	*d	Approximately 500 mm (19.7 in.)

DIAGNOSIS

If a system malfunction is detected, the clearance warning ECU assembly stores Diagnostic Trouble Codes (DTCs) in its memory. For details, refer to the Repair Manual.

INTUITIVE PARKING ASSIST SYSTEM DETAILS