Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 21nfa dsc40001
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download dsc40001 documenatation <<
Text preview - extract from the document
05-1417
DIAGNOSTICS - REAR SEAT ENTERTAINMENT SYSTEM
REAR SEAT ENTERTAINMENT SYSTEM
05BVA-02
DESCRIPTION
1. OUTLINE OF AVC-LAN
(a) What is AVC-LAN?
AVC-LAN is the abbreviation, which stands for Audio Visual Communication-Local Area Network.
This is a unified standard co-developed by 6 audio manufactures associated with Toyota Motor Corpo-
ration.
The Unified standard covers signals, such as audio signal, visual signal, signal for switch indication
and communication signal.
Stereo Component
Example: Amplifier Assy
Multi-display (CRT display) Multi-display Controller
Gateway ECU Display Sub-assy Navigation ECU
Radio Receiver Assy : AVC-LAN
I34376
(b) Objectives
Recently the car audio system has been rapidly developed and functions have been changed drasti-
cally. The conventional system has been switched to the multi-media type such as a navigation sys-
tem. At the same time the level of customers needs to audio system has been upgraded. This lies be-
hind this standardization.
The concrete objectives are explained below.
(1) When products by different manufactures were combined together, malfunctions used to occur
such as sound failure. This problem can be solved by standardization of signals.
(2) Various types of after market products have been able to add or replace freely.
(3) Because of the above (2), each manufacture has become able to concentrate on developing
products in their strongest field. This has enabled many types of products provided inexpensive-
ly.
(4) In general, a new product developed by one particular manufacture could not be used due to
a lack of compatibility with other manufactures products. By developing this new standard, users
can enjoy many compatible products from different manufacture anytime they went.
HINT:
S When +B short or GND short is detected in AVC-LAN circuit, communication stops, and audio system
does not function normally.
S When audio system is not equipped with a navigation system, audio head unit is the master unit. When
audio system is equipped with a navigation system, radio receiver and navigation assy is the master
unit.
S The master unit is equipped with a resistor (60 to 80 ) for communication.
S The car audio system using AVC-LAN circuit has a diagnosis function.
S Each product has its own specified numbers called physical address (three-digit number). Numbers
are also allotted to each function in one product, which are called logical address (two-digit number).
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1600
05-1418
DIAGNOSTICS - REAR SEAT ENTERTAINMENT SYSTEM
2. COMMUNICATION SYSTEM
(a) This system performs communication between components through the Main AVC-LAN and Sub
AVC-LAN.
Main AVC-LAN
Television Display Assy Radio Receiver Assy
Sub AVC-LAN
Multi-display
Controller Sub-assy
I35063
(b) The multi-display controller sub-assy functions as a master unit, which performs communication be-
tween the multi-display controller sub-assy and television display assy, in the Sub AVC-LAN circuit.
HINT:
Refer to "NAVIGATION SYSTEM" (See page 05-1379 ) and "AUDIO SYSTEM" (See page 05-1222 ) for the
Main AVC-LAN circuit.
(c) The multi-display controller sub-assy is equipped with a resistor (60 to 80 ) for communication.
3. DIAGNOSIS FUNCTION
(a) The multi-display controller sub-assy functions as a master unit in the Sub AVC-LAN circuit on this
system. It identifies the trouble in this circuit, and the identified information is displayed on the television
display assy.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1601
◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo