Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Problem Symptoms Table

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Park Assist / Monitoring / Parking Assist Monitor System(for Gasoline Model) / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

  • The following inspection procedures for the parking assist monitor system are based on the assumption that the audio and visual system*1 or navigation system*2 is normal. If the audio and visual system*1 or navigation system*2 has any malfunctions, first proceed with troubleshooting the audio and visual system*1 or navigation system*2.
  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system may be needed.

    Click here

    • *1: w/o Navigation System
    • *2: w/ Navigation System

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
General

Symptom

Suspected Area

Link

When the shift lever is in R, an image of the area behind the vehicle is not displayed (screen is not black)

Proceed to "Reverse Signal Circuit"*1

Proceed to "Reverse Signal Circuit"*2

Radio and display receiver assembly

When the shift lever is in R, an image of the area behind the vehicle is not displayed (screen is black)

Proceed to "Black Screen"

When the shift lever is not in R, an image of the area behind the vehicle is displayed

Proceed to "Reverse Signal Circuit"*1

Proceed to "Reverse Signal Circuit"*2

Radio and display receiver assembly

When the shift lever is in R, an image of the area behind the vehicle is displayed and then switches to another image

Proceed to "Reverse Signal Circuit"*1

Proceed to "Reverse Signal Circuit"*2

Radio and display receiver assembly

Display Malfunction

Symptom

Suspected Area

Link

Parking assist monitor display malfunction (distortion of the color/screen) occurs continuously

Proceed to "Image from Camera for Parking Assist Monitor is Abnormal"

Parking assist monitor display malfunction (distortion of the color/screen) occurs temporarily

Check the usage conditions (Explain to the customer that the display may be temporarily distorted when the vehicle is close to an object that transmits radio waves, such as a telecommunication tower, an airport or a truck equipped with a transceiver)

-
Parking Assist Monitor System Malfunction

Symptom

Suspected Area

Link

Estimated course lines are not displayed

Parking assist monitor screen display mode settings (Check that estimated course line display mode is selected)

-

Correct the steering angle neutral point (Initialization)

Steering angle setting (Calibration)

Television camera assembly

Steering sensor

Estimated course lines stop moving before the steering wheel is turned fully left.

Steering angle setting (Calibration)

The estimated course lines do not match the vehicle width extension lines when the steering wheel points straight ahead.

Check the installation of steering wheel

Correct the steering angle neutral point (Initialization)

Steering angle setting (Calibration)

Check that the television camera assembly is correctly installed

Back camera position setting (Calibration)

Television camera assembly

Steering sensor

The guide lines are not displayed even though the luggage compartment door is closed

Check that the No. 1 luggage compartment light assembly illuminates normally (if not, refer to Lighting System (INT) - Problem Symptoms Table)

Television camera assembly

The guide lines remain displayed even though the luggage compartment door is open

Check that the No. 1 luggage compartment light assembly illuminates normally (if not, refer to Lighting System (INT) - Problem Symptoms Table)

Television camera assembly

"!" mark is displayed.

Correct the steering angle neutral point (Initialization)

"!" mark remains displayed after the steering neutral point is corrected.

Steering angle setting (Calibration)

Steering sensor

Television camera assembly

When adjusting the camera optical axis, "You can not calibrate the camera when the door is open. Please close the door." is displayed even after the has been closed

Check that the No. 1 luggage compartment light assembly illuminates normally (if not, refer to Lighting System (INT) - Problem Symptoms Table)

Television camera assembly

"CHK" message(s) are displayed on the signal check screen

Signal check (Diagnosis system)

When an image of the area behind the vehicle is displayed, the lines are misaligned (the image from the camera is tilted)

Back camera position setting (Calibration)

Others

Symptom

Suspected Area

Link

A switch displayed on the parking assist monitor screen does not respond when pushed, or a switch other than the pushed switch responds.

Proceed to "Touch Panel Switch does not Function"*1

Proceed to "Touch Panel Switch does not Function"*2

Television camera assembly

Radio and display receiver assembly

A beep sound is not emitted when a switch displayed on the parking assist monitor screen is pushed.

Check the setting on the audio screen (General setting)

-

Proceed to "Touch Panel Switch does not Function"*1

Proceed to "Touch Panel Switch does not Function"*2

Television camera assembly

Radio and display receiver assembly

The language of the messages displayed on the parking assist monitor screen cannot be changed.

Check the setting on the audio screen (General setting)

-

Television camera assembly

Radio and display receiver assembly

The switches displayed on the parking assist monitor screen are grayed out.

Television camera assembly

Radio and display receiver assembly

The color of the switches displayed on the parking assist monitor screen are abnormal, or the switches are not dimmed when the headlights are turned on.

Check the setting on the audio screen (Screen adjustment)

-

Proceed to "Display does not Dim when Light Control Switch is Turned ON"*1

Proceed to "Display does not Dim when Light Control Switch is Turned ON"*2

Television camera assembly

Radio and display receiver assembly

  • *1: w/o Navigation System
  • *2: w/ Navigation System
    Precaution

    System Description

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