Toyota 4Runner manuals

Toyota 4Runner: USB Audio System Recognition/Play Error

DESCRIPTION

When a USB device or "iPod" is connected to the USB jack of the No. 1 stereo jack adapter assembly, it must have playable files. The device must also communicate with and be recognized by the navigation receiver assembly. This diagnosis procedure is for when a device is not recognized, or files from the device cannot be played normally.

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

After replacing the navigation receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.

HINT:

  • When a large amount of data is in a USB device, it may take a while to begin play.
  • 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 No. 1 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 (See page ).


(c) Check if the USB device is a compatible format or "iPod" is a compatible version.

HINT:

Refer to System Description for compatible formats and versions (See page ).


Result

Proceed to

No playable files exist, or incompatible device format or version

A

Playable files exist, and compatible device format or version

B


A

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

B

2.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the G53 No. 1 stereo jack adapter assembly connector.


(b) Disconnect the G40 navigation receiver assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

G53-1 (UPI) - G40-1 (USV1)

Always

Below 1 Ω

G53-2 (UDO-) - G40-2 (US1-)

Always

Below 1 Ω

G53-3 (UDO+) - G40-3 (US1+)

Always

Below 1 Ω

G53-4 (UJSG) - G40-4 (UGD1)

Always

Below 1 Ω

G53-5 (UJSS) - G40-5 (USG1)

Always

Below 1 Ω

G53-1 (UPI) - Body ground

Always

10 kΩ or higher

G53-2 (UDO-) - Body ground

Always

10 kΩ or higher

G53-3 (UDO+) - Body ground

Always

10 kΩ or higher

G53-4 (UJSG) - Body ground

Always

10 kΩ or higher

G53-5 (UJSS) - Body ground

Always

10 kΩ or higher

Text in Illustration

*a

Front view of wire harness connector

(to Navigation Receiver Assembly)

*b

Front view of wire harness connector

(to No. 1 Stereo Jack Adapter Assembly)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT NAVIGATION RECEIVER ASSEMBLY (NO. 1 STEREO JACK ADAPTER ASSEMBLY POWER SOURCE)

(a) Reconnect the G40 navigation receiver assembly connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

G53-1 (UPI) - G53-4 (UJSG)

Ignition switch ACC

4.5 to 5.5 V

Text in Illustration

*a

Front view of wire harness connector

(to No. 1 Stereo Jack Adapter Assembly)



NG

REPLACE NAVIGATION RECEIVER ASSEMBLY

OK

4.

FORMAT USB DEVICE OR RESTORE "iPod" AND RECHECK

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

NOTICE:

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

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

OK:

Malfunction disappears.


OK

END

NG

5.

REPLACE USB DEVICE OR "iPod"

(a) Turn the ignition switch off.

HINT:

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

(b) Turn the ignition switch to ACC.

(c) Connect a known good USB device or "iPod" to the No. 1 stereo jack adapter assembly.

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 (See page ).

NEXT

6.

CHECK USB DEVICE OR "iPod"

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

OK:

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


OK

USB DEVICE OR "iPod" WAS INCOMPATIBLE OR DEFECTIVE


NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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