Toyota Tundra (2015 year). Manual — part 930
(2) Multipath
One signal is reflected off buildings or mountains and the
other signal is received directly from the transmitter.
Text in Illustration
*a
Multipath
(3) Fade out
Fade out is caused by objects (buildings, mountains and
between the transmitter and vehicle. High frequency radio
waves, such as FM broadcasts, are easily deflected by
obstructions. Low frequency radio waves, such as AM
broadcasts, are less likely to deflect.
Text in Illustration
*a
Fade Out
(d) Noise problem
Technicians must have a clear understanding about each customer's noise complaint. Use the following
table to diagnose noise problems.
RADIO
FREQUENCY
NOISE OCCURRENCE CONDITION
PRESUMABLE CAUSE
AM
Noise occurs in a specific area
Foreign noise
Noise occurs when listening to an
intermittent broadcast
An identical program transmitted from multiple towers
can cause noise where the signals overlap
Noise occurs only at night
Signal phasing
FM
Noise occurs while driving in a
specified area
Multipath resulting from a change in FM frequency
6. "HD Radio" FUNCTION OUTLINE (w/ HD Radio Function)
(a) The "HD Radio" system is a radio system that broadcasts in the IBOC (In-Band On-Channel) form that the
"HD Radio" technology is manufactured under license from iBiquity Digital Corporation. U.S. and Foreign
Information for the music currently being listened to is stored in the system and can be transmitted to an
"iPod" connected to the system. The information transferred to the "iPod" can be used for purchasing the
music through the "iTunes" music store. Also, traffic and weather information can be received and
AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: SYSTEM DES...
displayed on the audio and visual screen.
7. SDARS SYSTEM FUNCTION OUTLINE (w/ SDARS System)
(a) Satellite Digital Audio Radio Service (SDARS) is a satellite digital radio broadcast provided by Sirius XM
Radio Inc. The broadcast (pay-type) is performed through satellites and terrestrial repeater networks.
Several unique channels are available, and even if a vehicle changes locations, the same information can
be received without breaks. Information such as song names, broadcast station names, etc. can be
received. Also, traffic information can be received and displayed on the audio and visual screen.
NOTICE:
To receive audio-visual pay-type broadcasts, the customer must enter into a pay-type contract with XM
the communication between a cellular phone and the radio and display receiver assembly, before using the
Entune service on the audio and visual system, the cellular phone needs to be registered with the audio
9. VEHICLE CUSTOMIZATION OUTLINE
HINT:
Items available for customization via the audio and visual system can also be customized by using the
Techstream.
Some customize parameters displayed on the Techstream will be displayed on the "Vehicle Customization"
screen for the audio and visual system. Users can customize these items.
10. RBDS FUNCTION OUTLINE (w/ RBDS Function)
(a) The Radio Broadcast Data System (RBDS) is broadcast through conventional FM radio broadcasts.
Information such as song names, traffic information, broadcast station names, etc. can be received.
11. USB AUDIO SYSTEM FUNCTION OUTLINE
(a) The No. 1 stereo jack adapter assembly is equipped with a USB terminal. Connecting a USB device or
"iPod" to the No. 1 stereo jack adapter assembly allows music files to be played. Not only is it possible to
play music from a USB device with audio functions, is also possible to play MP3 or WMA music files that are
stored on a USB device. In addition, "iPod" control software is installed, allowing file selection from
playlists and operation using shuffle mode.
HINT:
(1) USB device
The following device formats can be used:
Compatible USB device
formats
USB communication format: USB 2.0 HS (480Mbps) and FS
(12Mbps)
File format: FAT16/32 (Windows)
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Class: Mass storage class
MP3, WMA and AAC files written in any format other than those listed above may not play correctly,
and their names and folder names may not be displayed correctly.
Items related to standards and limitations are as follows:
Maximum directory hierarchy: 8 levels
The following "iPod", "iPod nano", "iPod classic", "iPod touch" and "iPhone" devices can be used with
this system.
Made for:
"iPod touch" (5th generation)
"iPod touch" (4th generation)
"iPod touch" (3rd generation)
"iPod touch" (2nd generation)
"iPod touch" (1st generation)
"iPod classic"
"iPod with video"
"iPod nano" (7th generation)
"iPod nano" (6th generation)
"iPod nano" (5th generation)
"iPod nano" (4th generation)
"iPod nano" (3rd generation)
"iPod nano" (2nd generation)
"iPod nano" (1st generation)
"iPhone 5"
"iPhone 4S"
"iPhone 4"
"iPhone 3GS"
"iPhone 3G"
"iPhone"
HINT:
Depending on differences between models or software versions etc., some models might be incompatible
with this system.
12. CUSTOMIZE STARTUP IMAGE OR SCREEN OFF IMAGE FUNCTION OUTLINE
(a) An image can be copied from a USB device. The image can be used as the startup image or screen off
(a) The Automatic Sound Levelizer (ASL) function automatically adjusts the audio system volume level in
order to compensate for increased vehicle noise (vehicle noise tends to increase as vehicle speed
increases). The ASL adjusts the volume level based upon vehicle speed signals that it receives from the
combination meter assembly.
AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: SYSTEM DES...
14. DIAGNOSTIC FUNCTION OUTLINE
(a) The audio and visual system has a diagnostic function (the result is indicated on the master unit).
15. COMMUNICATION SYSTEM
(a) CAN Communication Outline
(1) The audio and visual system uses CAN communication between the radio and display receiver assembly
and ECUs.
(b) LVDS Communication Outline
(1) The audio and visual system uses LVDS communication, between the radio and display receiver
assembly and stereo component tuner assembly.
(2) If a short or open circuit occurs in the LVDS communication line, communication is interrupted and the
system will not operate normally.
AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: SYSTEM DES...
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