NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HV Model): USB Audio System Recognition/Play Error; 2021 - 2022 MY Avalon HV [08/2020

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001RUJ6
Model Year Start: 2021	Model: Avalon HV	Prod Date Range: [08/2020 - ]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HV Model): USB Audio System Recognition/Play Error; 2021 - 2022 MY Avalon HV [08/2020 - ]

USB Audio System Recognition/Play Error

DESCRIPTION

When a USB device or "iPod" is connected to the USB jack of the stereo jack adapter assembly, it must have playable files. The device must also communicate with and be recognized by the radio and display receiver assembly. This diagnostic procedure is for when a device is not recognized, or files from the device cannot be played normally.

WIRING DIAGRAM

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 Navigation System.
Click here
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.

HINT:

When a large amount of data is in a USB device, it may take a while to begin playback.
When using a USB device, files that are protected by copyright cannot be played.
When files are not played in the sorted order, perform the following procedure before inspection.
1. Add numbers in front of the file names.
2. Put the files in a folder and copy the folder data to the USB device.

PROCEDURE

1.	CHECK USB DEVICE OR "iPod"

(a) Disconnect the USB device or "iPod" from the stereo jack adapter assembly.

(b) Check if playable files are present on the USB device or "iPod".

HINT:

Refer to System Description for playable files.

Click here

HINT:

Refer to System Description for compatible formats and versions.

Click here

Result	Proceed to
No playable files exist, or incompatible device format or version.	A
Playable files exist, and compatible device format or version.	B

END (USB DEVICE FORMAT WAS INCOMPATIBLE, "iPod" VERSION IS INCOMPATIBLE, OR NO PLAYABLE FILES EXIST)

2.	CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the G106 radio and display receiver assembly connector.

(b) Disconnect the G121 stereo jack adapter assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G106-1 (USV1) - G121-1 (UPI)	Always	Below 1 Ω
G106-2 (US1-) - G121-2 (UDO-)	Always	Below 1 Ω
G106-3 (US1+) - G121-3 (UDO+)	Always	Below 1 Ω
G106-4 (UGD1) - G121-4 (UJSG)	Always	Below 1 Ω
G106-5 (USG1) - G121-5 (UJSS)	Always	Below 1 Ω
G106-1 (USV1) or G121-1 (UPI) - Body ground	Always	10 kΩ or higher
G106-2 (US1-) or G121-2 (UDO-) - Body ground	Always	10 kΩ or higher
G106-3 (US1+) or G121-3 (UDO+) - Body ground	Always	10 kΩ or higher
G106-4 (UGD1) or G121-4 (UJSG) - Body ground	Always	10 kΩ or higher
G106-5 (USG1) or G121-5 (UJSS) - Body ground	Always	10 kΩ or higher

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

Front view of wire harness connector

(to Stereo Jack Adapter Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (STEREO JACK ADAPTER ASSEMBLY POWER SOURCE)

(a) Disconnect the G121 stereo jack adapter assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
G121-1 (UPI) - G121-4 (UJSG)	Power switch on (ACC)	5 V

*a	Front view of wire harness connector (to Stereo Jack Adapter Assembly)

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

4.	FORMAT USB DEVICE OR RESTORE "iPod" AND RECHECK

(a) Delete all files in the USB device or "iPod" and format/restore it.

(b) Save the data again and check if it can be played on the in-vehicle device.

NOTICE:

Formatting a USB device or restoring an "iPod" erases all music on the device. Ensure that a backup of the music data is available before performing this operation.

OK:

Malfunction disappears.

END

5.	REPLACE USB DEVICE OR "iPod"

(a) Turn the power switch off.

HINT:

When this malfunction occurs, it is necessary to turn the power switch off to make it possible for the vehicle to recognize a new device when it is connected.

(b) Turn the power switch on (ACC).

HINT:

If the malfunction occurred when a USB device was in use, use another USB device for the inspection. If the malfunction occurred when an "iPod" was in use, use another "iPod" for the inspection.
Refer to System Description for compatible formats and versions.
Click here

6.	CHECK USB DEVICE OR "iPod"

(a) Check if a USB device or "iPod" is recognized by the radio and display receiver assembly, and if information such as track, artist and album names is displayed on the screen.

OK:

USB device or "iPod" is recognized properly and the information is displayed on the screen.

USB DEVICE OR "iPod" WAS INCOMPATIBLE OR DEFECTIVE

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE