Toyota Avalon (XX50): Voice Guidance does not Function. Voice is not Recognized

Voice Guidance does not Function

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.
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When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.

PROCEDURE

1.	CHECK VOICE GUIDANCE SETTING

(a) Check that the voice guidance setting is not off.

OK:

Voice guidance setting is not off.

CHANGE THE VOICE GUIDANCE SETTING TO ON

2.	CHECK AUDIO FUNCTION

(a) Check that sound can be heard from a front speaker.

OK:

Sound can be heard.

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

PROCEDURE

1.	CHECK CONDITION

(a) While paying attention to the condition of the spoken voice command, perform a voice recognition operation.

OK:

Voice command is recognized normally.

HINT:

When the voice command is recognized, the content of the voice command is displayed in the voice recognition result display area to the right of the mic icon. (Example: When "Cancel" is spoken, "Cancel" is displayed in the voice recognition result display area.)
If an unnecessary word (such as "um" or "ah") is spoken before or after the recognition word, the system incorrectly recognizes the recognition word.
The system cannot recognize voice commands when multiple people are speaking simultaneously.
If the speaking speed is too fast or too slow, the recognition rate may decrease.
The system may have difficulty recognizing voice commands depending on the voice quality (such as a hoarse voice due to poor physical condition).

END (VOICE RECOGNITION MAY BE DIFFICULT DUE TO SPEECH CONDITION)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Automatic Transaxle System: System Voltage Circuit Short to Ground or Open (P056014). Starter Relay Circuit Short to Battery (P061512). Brake Switch "B" Circuit Short to Battery (P070312)
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