Toyota Avalon Service & Repair Manual: Operation Check

OPERATION CHECK

Self-diagnosis System

(a) If the clearance warning ECU assembly detects that an ultrasonic sensor is malfunctioning, a malfunction indication is displayed on the combination meter assembly and combination meter assembly.

Malfunctioning Item

Detection Condition

Warning Message

(Multi-information Display)

Buzzer Sounding

(No. 1 Clearance Warning Buzzer and No. 2 Clearance Warning Buzzer)

Suspected Area

Frozen indication

  • The ultrasonic sensor is covered with foreign matter, such as mud or snow
  • The ultrasonic sensor is frozen

Parking Assist Unavailable Clean Parking Assist Sensor

  • Check if any foreign matter is attached to the ultrasonic sensors and their surrounding areas

    Click here

  • If there is no foreign matter attached to the ultrasonic sensors and their surrounding areas, check for DTCs

    Click here

Open circuit indication

  • There is an open circuit between the clearance warning ECU assembly and the ultrasonic sensor
  • The ultrasonic sensor is malfunctioning

Parking Assist Malfunction Visit Your Dealer

Check for DTCs

Click here

Communication malfunction indication

The ultrasonic sensor is malfunctioning

Parking Assist Unavailable

Check for DTCs

Click here

(1) Buzzer Sounding (No. 1 Clearance Warning Buzzer and No. 2 Clearance Warning Buzzer)

HINT:

Buzzer sounding is stopped after approximately 7.5 seconds elapsed.

DETECTION RANGE MEASUREMENT AND DISPLAY INSPECTION

NOTICE:

Perform the following measurement and inspection with the shift lever in a position other than P. Be sure to apply the parking brake and depress the brake pedal firmly to prevent the vehicle from moving.

(a) Turn the engine switch on (IG).

(b) Turn the intuitive parking assist system on.

(c) Detection range measurement:

(1) Move the shift lever according to the table below.

Measurement Area

Shift Lever Position

Front Corner

In any position other than P

Front Center

In any position other than P or R

Rear Corner

R

Rear Center

(2) Move a 60 mm (2.4 in.) diameter pole near each sensor to measure its detection range. When measuring the longest-range detection of the front center sonar and the rear center sonar, use a wall or equivalent.

NOTICE:

These detection ranges are applicable when positioning the 60 mm (2.4 in.) diameter pole parallel or perpendicular to the ground. The detection range varies depending on the measuring method and type of obstacle (such as walls).

HINT:

Have an assistant move the pole.

Corner Sonar Detection Range Front Center Sonar Detection Range Rear Center Sonar Detection Range

(d) Front corner sonar display and buzzer operation check

(1) When the front corner ultrasonic sensor have detected an obstacle, check the displays and check that the buzzer sounds.

Operation Condition

Engine Switch

Intuitive Parking Assist System

Shift Lever Position

Vehicle Speed

On (IG)

On

In any position other than P

Less than approximately 10 km/h (6 mph) if speed is increasing

*a

Example (Front Corner Sonar)

*b

Multi-information Display

*c

Headup Display (w/ Headup Display System)

*d

Multi-display

*e

Close-range Detection

*f

Medium-range Detection

*g

Long-range Detection

*h

Cooperated Display

*i

w/ Parking Assist Monitor System

*j

w/ Panoramic View Monitor System

Standard:

Multi-information Display and Buzzer

Detection Range

During Judgment

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 800 +/- 80 mm (17.7 +/- 1.97 to 31.5 +/- 3.15 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Headup Display and Buzzer (Cooperated Display (w/ Headup Display System))

Detection Range

During Judgment

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 800 +/- 80 mm (17.7 +/- 1.97 to 31.5 +/- 3.15 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Multi-display and Buzzer (Cooperated Display)

Detection Range

During Judgment

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Color of bars displayed: Red (illuminated)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 800 +/- 80 mm (17.7 +/- 1.97 to 31.5 +/- 3.15 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

HINT:

Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

(e) Front center sonar display and buzzer operation check

(1) When the front center ultrasonic sensor have detected an obstacle, check the display and check that the buzzer sounds.

Operation Condition

Engine Switch

Intuitive Parking Assist System

Shift Lever Position

Vehicle Speed

On (IG)

On

In any position other than P or R

Less than approximately 10 km/h (6 mph) if speed is increasing

*a

Example (Front Center Sonar)

*b

Multi-information Display

*c

Headup Display (w/ Headup Display System)

*d

Multi-display

*e

Close-range Detection

*f

Medium-range Detection

*g

Long-range Detection

*h

Longest-range Detection

*i

Cooperated Display

*j

w/ Parking Assist Monitor System

*k

w/ Panoramic View Monitor System

-

-

Standard:

Multi-information Display and Buzzer

Detection Range

During Detection

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 730 +/- 60 mm (17.7 +/- 1.97 to 28.7 +/- 2.36 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Longest-range detection

From approx. 730 +/- 60 to 1000 +/- 100 mm (28.7 +/- 2.36 to 39.4 +/- 3.94 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.5 sec.)

Number of bars displayed: 4 (illuminated)

Wall

Headup Display and Buzzer (Cooperated Display (w/ Headup Display System))

Detection Range

During Detection

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 730 +/- 60 mm (17.7 +/- 1.97 to 28.7 +/- 2.36 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Longest-range detection

From approx. 730 +/- 60 to 1000 +/- 100 mm (28.7 +/- 2.36 to 39.4 +/- 3.94 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.5 sec.)

Number of bars displayed: 4 (illuminated)

Wall

Multi-display and Buzzer (Cooperated Display)

Detection Range

During Detection

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Color of bars displayed: Red (illuminated)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 730 +/- 60 mm (17.7 +/- 1.97 to 28.7 +/- 2.36 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

Longest-range detection

From approx. 730 +/- 60 to 1000 +/- 100 mm (28.7 +/- 2.36 to 39.4 +/- 3.94 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.5 sec.)

Color of bars displayed: Yellow (blinking)

Wall

HINT:

Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

(f) Rear corner sonar display and buzzer operation check

(1) When the rear corner ultrasonic sensor have detected an obstacle, check the display and check that the buzzer sounds.

Operation Condition

Engine Switch

Intuitive Parking Assist System

Shift Lever Position

Vehicle Speed

On (IG)

On

R

Less than approximately 10 km/h (6 mph) if speed is increasing

*a

Example (Rear Corner Sonar)

*b

Multi-information Display

*c

Headup Display (w/ Headup Display System)

*d

Multi-display

*e

Close-range Detection

*f

Medium-range Detection

*g

Long-range Detection

*h

Cooperated Display

*i

w/ Parking Assist Monitor System

*j

w/ Panoramic View Monitor System

Standard:

Multi-information Display and Buzzer

Detection Range

During Judgment

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 800 +/- 80 mm (17.7 +/- 1.97 to 31.5 +/- 3.15 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Headup Display and Buzzer (Cooperated Display (w/ Headup Display System))

Detection Range

During Judgment

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 800 +/- 80 mm (17.7 +/- 1.97 to 31.5 +/- 3.15 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Multi-display and Buzzer (Cooperated Display)

Detection Range

During Judgment

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Color of bars displayed: Red (illuminated)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 800 +/- 80 mm (17.7 +/- 1.97 to 31.5 +/- 3.15 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

HINT:

Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

(g) Rear center sonar display and buzzer operation check

(1) When the rear center ultrasonic sensor have detected an obstacle, check the display and check that the buzzer sounds.

Operation Condition

Engine Switch

Intuitive Parking Assist System

Shift Lever Position

Vehicle Speed

On (IG)

On

R

Less than approximately 10 km/h (6 mph) if speed is increasing

*a

Example (Rear Center Sonar)

*b

Multi-information Display

*c

Headup Display (w/ Headup Display System)

*d

Multi-display

*e

Close-range Detection

*f

Medium-range Detection

*g

Long-range Detection

*h

Longest-range Detection

*i

Cooperated Display

*j

w/ Parking Assist Monitor System

*k

w/ Panoramic View Monitor System

-

-

Standard:

Multi-information Display and Buzzer

Detection Range

During Detection

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 750 +/- 60 mm (17.7 +/- 1.97 to 29.5 +/- 2.36 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Longest-range detection

From approx. 750 +/- 60 to 1500 +/- 150 mm (29.5 +/- 2.36 to 59.1 +/- 5.91 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.5 sec.)

Number of bars displayed: 4 (illuminated)

Wall

Headup Display and Buzzer (Cooperated Display (w/ Headup Display System))

Detection Range

During Detection

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Number of bars displayed: 1 (blinking)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Number of bars displayed: 2 (illuminated)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 750 +/- 60 mm (17.7 +/- 1.97 to 29.5 +/- 2.36 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Number of bars displayed: 3 (illuminated)

60 mm (2.4 in.) diameter pole

Longest-range detection

From approx. 750 +/- 60 to 1500 +/- 150 mm (29.5 +/- 2.36 to 59.1 +/- 5.91 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.5 sec.)

Number of bars displayed: 4 (illuminated)

Wall

Multi-display and Buzzer (Cooperated Display)

Detection Range

During Detection

Obstacle

Close-range detection

Within approx. 350 +/- 40 mm (13.8 +/- 1.57 in.)

Buzzer: Sounds continuously

Color of bars displayed: Red (illuminated)

60 mm (2.4 in.) diameter pole

Medium-range detection

From approx. 350 +/- 40 to 450 +/- 50 mm (13.8 +/- 1.57 to 17.7 +/- 1.97 in.)

Buzzer: Sounds intermittently (ON: 0.1 sec. / OFF: 0.1 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

Long-range detection

From approx. 450 +/- 50 to 750 +/- 60 mm (17.7 +/- 1.97 to 29.5 +/- 2.36 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.2 sec.)

Color of bars displayed: Yellow (blinking)

60 mm (2.4 in.) diameter pole

Longest-range detection

From approx. 750 +/- 60 to 1500 +/- 150 mm (29.5 +/- 2.36 to 59.1 +/- 5.91 in.)

Buzzer: Sounds intermittently (ON: 0.2 sec. / OFF: 0.5 sec.)

Color of bars displayed: Yellow (blinking)

Wall

HINT:

Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

    No. 2 Clearance Warning Buzzer Circuit

    Parts Location

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