AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: SYSTEM DESCRIPTION; 2006 MY LX470 [05/2005

Last Modified: 4-30-2014	6.6 D	Doc ID: RM00000102C003X
Model Year: 2006	Model: LX470	Prod Date Range: [05/2005 - ]
Title: AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: SYSTEM DESCRIPTION; 2006 MY LX470 [05/2005 - ]

SYSTEM DESCRIPTION

CAUTION:

The CD player uses an invisible laser beam which could cause hazardous radiation exposure. Be sure to operate the player as instructed.

1. COMPACT DISC PLAYER

(a) The Compact Disc (CD) player uses a laser beam pickup to read the digital signals recorded on CDs and reproduce analog signals of music, etc. The CD player can play 12 cm (4.7 in.) discs.

NOTICE:

Never disassemble or apply oil to any part the player unit.
Only insert discs into the CD player.

2. MAINTENANCE

(a) Tape player / head cleaning:

(1) Raise the cassette door with your finger. Using a pencil or similar object, push in the guide.

(2) Using a cleaning pen or cotton applicator soaked in cleaner, clean the head surface, pinch rollers and capstans.

(b) CD cleaning:

(1) If a disc is dirty, clean the disc by wiping the CD's underside radially with a soft cloth.

NOTICE:

Do not use a conventional record cleaner or anti-static preservative.

3. 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 manufacturers associated with Toyota Motor Corporation.

The Unified standard covers signals, visual signals, signal for switch indication and communication signal. Radio receiver assembly and RSA (Rear Seat Audio) panel have a resistance (60-80 Ω) required for communication.

(b) Objectives

Recently the car audio system has been rapidly developed and functions have been changed drastically. The conventional system has been switched to the multi-media type such as a navigation system. At the same time, the level of customers needs to audio has been upgraded. This lies behind this standardization.

The concrete objectives are explained below.

(1) Step1: When products by different manufacturers were combined together, there used to be a case that malfunction occurred such as sound did not come out. This problem has been resolved by standardization of signals.

(2) Step2: Various types of after market products have been able to add or replace freely.

(3) Step3: Because of the above step2, each manufacturer has become able to concentrate on developing products in their strongest field. This has enabled many types of products to be provided inexpensively.

(4) Step4: In general, a new product developed by one particular manufacturer could not be used due to a lack of compatibility with other manufacturers products. Because of this new standard, users can enjoy many compatible products from different manufacturer anytime they went.

(c) The above descriptions are the objectives to introduce AVC-LAN. By this standardization, development of new products will no longer cause systematic errors.

HINT:

When +B short or GND short is detected in AVC-LAN circuit, communication stops. And audio system does not function normally.
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, multi-display is the master unit.
This system has 2 kinds of AVC-LAN, Main AVC-LAN and Sub AVC-LAN.
Stereo component controller assembly panel works as a master using AVC-LAN circuit has a diagnosis function.
The car audio system using AVC-LAN circuit has a diagnosis function.
(w/ Navigation system )
Each product has its own specified number called physical address. Numbers are also allotted to each function in one product, which are called logical address.

4. DIAGNOSIS CODE LIST

HINT:

w/ Navigation system

(a) Physical address: 190 Radio receiver assembly

HINT:

*1: It may be stored when the ignition switch is turned 1 min. again after engine start.

*2: It may be stored when the ignition switch is turned again after engine start.

*3: When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

Logical address	DTC	Diagnosis item	Diagnosis content	Countermeasure and inspected parts
01 (Communication Control)	21	ROM Error	Error is detected in internal ROM.	Replace radio receiver assembly.
01 (Communication Control)	22	RAM Error	Error is detected in internal RAM.	Replace radio receiver assembly.
01 *1 (Communication Control)	D6	Absence of Master	Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, radio receiver assembly was disconnected.	Check harness for power supply system of radio receiver assembly. Check harness for communication system of radio receiver assembly.
01 *2 (Communication Control)	D8	NO Response to Connection Check	Component shown by auxiliary code is or had been disconnected from system after engine start. D9	Check harness for power supply system of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code.
01 *1 (Communication Control)	D9	Last Mode Error	Component operated (sounds and / or images were provided) before engine stop is or has been disconnected with ignition switch in ACC or ON.	Check harness for power supply system of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code.
01 (Communication Control)	DA	NO Response to ON / OFF Instruction	No response is identified when changing mode (audio and visual mode change). Detected when sound and picture does not change by button operation.	Check harness for power supply system of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code. If error occurs again, replace component shown by auxiliary code.
01 *1 (Communication Control)	DB	Mode status Error	Dual alarm is detected.	Check harness for power supply system of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code.
01 *3 (Communication Control)	DC	Transmission Error	Transmission to component shown by auxiliary code has been failed. (Detecting this DTC does not necessarily mean actual failure.)	If same auxiliary code is recorded in other component, check harness for power supply and communication system of components shown by sub code.
01 *2 (Communication Control)	DD	Master Reset (Momentary Interruption)	After engine is started, radio receiver assembly was disconnected from system.	If this error occurs frequently, replace radio receiver assembly.
01 *2 (Communication Control)	DE	Slave Reset (Momentary Interruption)	After engine is started, slave component was disconnected from system.	Check harness for power supply of component shown by auxiliary code. Check harness or communication system of component shown by auxiliary code.
01 *3 (Communication Control)	DF	Master Error	Due to defective of radio receiver assembly, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and radio receiver assembly.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. Check harness for communication system between radio receiver assembly and sub-master component.
01 (Communication Control)	E0	Registration Completion Instruction Error	"Registration Completion Instruction" command from radio receiver assembly cannot be received.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 *1 (Communication Control)	E1	Audio processor ON error	While source equipment is operating, AMP output is stopped.	Check harness for power supply of radio receiver assembly. Check harness for communication of radio receiver assembly.
01 (Communication Control)	E2	ON / OFF Instruction Parameter Request Transmission	Error occurs in ON / OFF controlling command from radio receiver assembly.	Replace radio receiver assembly.
01 (Communication Control)	E3	Registration Request Transmission	Registration Request command is output from slave component. Receiving Connection Check Instruction, Registration Request command is output from sub-master component.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 (Communication Control)	E4	Plural Frame Abort	Plural frame transmission is aborted.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
60 (Radio receiver assembly)	43	AM Tuner Error	Abnormal condition is detected in AM tuner. Inspect radio receiver assembly.	Replace radio receiver assembly.
60 (Radio receiver assembly)	44	FM Tuner Error	Abnormal condition is detected in FM tuner.	Replace radio receiver assembly.
61 (Cassette switch)	40	Mechanical or Media Error	Malfunction due to mechanical failure is identified. Or, cassette tape is cut or entangled.	Inspect cassette tape.
61 (Cassette switch)	41	EJECT Malfunction	Malfunction due to mechanical failure.	Replace radio receiver assembly.
63 (In-dash CD auto Changer)	42	No Disc Readout	Disc cannot be read.	Inspect CD.
63 (In-dash CD auto Changer)	44	CD Error	Error is detected in CD auto changer.	Replace radio receiver assembly.
63 (In-dash CD auto Changer)	45	EJECT Error	CD cannot be ejected.	Replace radio receiver assembly.
63 (In-dash CD auto Changer)	47	CD High Temp.	High temperature is detected in CD auto changer.	Replace radio receiver assembly.
63 (In-dash CD auto Changer)	48	CD Excess Current	Excess current is applied in CD auto changer.	Replace radio receiver assembly.

(b) Physical address: 440 Stereo component amplifier

HINT:

*1: Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting engine.

*2: It may be stored when the ignition switch is turned 1 min. again after start.

*3: It may be stored when the ignition switch is again after engine start.

*4: When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

Logical address	DTC	Diagnosis item	Diagnosis content	Countermeasure and inspected parts
01 (Communication Control)	21	ROM Error	Abnormal condition of ROM is detected.	Replace stereo component amplifier.
01 (Communication Control)	22	RAM Error	Abnormal condition of RAM is detected.	Replace stereo component amplifier.
01 (Communication Control)	D6 *1	Absence of Master	Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, radio receiver assembly was disconnected.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. Check harness for power supply of stereo component amplifier. Check harness for communication system of stereo component amplifier.
01 *6 (Communication Control)	D7	Connection Check Error	Component in which this code is recorded has been disconnected from system after engine start. Or, when this code was recorded, radio receiver assembly was disconnected.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. Check harness for power supply of stereo component amplifier. Check harness for communication system of stereo component amplifier.
01 (Communication Control)	DC *2	Transmission Error	Transmission to component shown by auxiliary code has been failed. (This code does not necessarily mean actual failure.)	If same auxiliary code is recorded in other component(s), check harness for power supply and communication system of components shown by sub code.
01 (Communication Control)	DD *3	Master Reset (Momentary Interruption)	After engine is started, radio receiver assembly was disconnected from system.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. If error occurs frequently, replace radio receiver assembly.
01 (Communication Control)	DF *4	Master Error	Due to defective condition of component with a display, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and master component.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. Check harness for communication system between radio receiver assembly and sub-master component.
01 (Communication Control)	E0 *1	Registration Completion Instruction Error	"Registration Completion Instruction" command from radio receiver assembly cannot be received.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 (Communication Control)	E1 *1	Audio processor ON error	While source equipment is operating, AMP output is stopped.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly.
01 (Communication Control)	E2	ON / OFF Instruction Parameter Error	Error is detected in ON / OFF control command from radio receiver assembly.	Replace radio receiver assembly.
01 (Communication Control)	E3	Registration Request Transmission	Registration Request command is output from slave component. By reception of connection check instruction, Registration Request command is output from sub-master component.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 (Communication Control)	E4	Plural Frame Abort	Plural frame transmission is aborted.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.

HINT:

*1:Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.

*2: It may be stored when the ignition switch is turned 1 min. again after engine start.

*3: It may be stored when the ignition switch is turned again after engine start.

*4: When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

Logical address	DTC	Diagnosis item	Diagnosis content	Countermeasure and inspected parts
01 (Communication Control)	D6 *1	Absence of Master	Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, radio receiver assembly was disconnected.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. Check harness for power supply of RSA panel. Check harness for communication system of RSA panel.
01 *6 (Communication Control)	D7	Connection Check Error	Component in which this code is recorded has been disconnected from system after engine start. Or, when this code was recorded, radio receiver assembly was disconnected.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. Check harness for power supply of RSA panel. Check harness for communication system of stereo component controller assembly panel.
01 (Communication Control)	DC *2	Transmission Error	Transmission to component shown by auxiliary code has been failed. (This code does not necessarily mean actual failure.)	If same auxiliary code is recorded in other component(s), check harness for power supply and communication system of components shown by sub code.
01 (Communication Control)	DD *3	Master Reset (Momentary Interruption)	After engine is started, radio receiver assembly was disconnected from system.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. If error occurs frequently, replace radio receiver assembly.
01 (Communication Control)	DF *4	Master Error	Due to defective of component with a display, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and master component.	Check harness for power supply of radio receiver assembly. Check harness for communication system of radio receiver assembly. Check harness for communication system between radio receiver assembly and sub-master component.
01 (Communication Control)	E0 *1	Registration Completion Instruction Error	"Registration Completion Instruction" command from radio receiver assembly cannot be received.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 (Communication Control)	E3	Registration Request Transmission	Registration Request command is output from slave component. By reception of connection check instruction, Registration Request command is output from sub-master component.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 (Communication Control)	E4	Plural Frame Abort	Plural frame transmission is aborted.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.

(d) Physical address: 16A, 16C RSA Panel (stereo component controller assembly) (Sub AVC-LAN)

HINT:

*1: It may be stored when the ignition switch is turned 1 min. again after start.

*2: It may be stored when the ignition switch is turned again after start.

*3: When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

Logical address	DTC	Diagnosis item	Diagnosis content	Countermeasure and inspected parts
01 *2 (Communication Control)	D8	No Response to Connection Check	Component shown by auxiliary code is or had been disconnected from system after engine start. D9	Check harness for power supply system of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code.
01 *2 (Communication Control)	D9	Last Mode Error	Component operated (sounds and / or images were provided) before engine stop is or has been disconnected with ignition switch in ACC or ON.	Check harness for power supply system of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code.
01 (Communication Control)	DA	No Response to ON / OFF Instruction	No response is identified when changing mode (audio and visual mode change). Detected when sound and picture does not change by button operation.	Check harness for power supply of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code. If error occurs again, replace component shown by auxiliary code.
01 *1 (Communication Control)	DB	Mode Status Error	Dual alarm is detected.	Check harness for power supply of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code.
01 *3 (Communication Control)	DC	Transmission Error	Transmission to component shown by auxiliary code has been failed. (Detecting this DTC does not necessarily mean actual failure.)	If same auxiliary code is recorded in other component, check harness for power supply and communication system of components shown by sub code.
01 *2 (Communication Control)	DE	Slave Reset (Momentary Interruption)	After engine is started, slave component was disconnected from system.	Check harness for power supply of component shown by auxiliary code. Check harness for communication system of component shown by auxiliary code.
01 (Communication Control)	E4	Plural Frame Abort	Plural frame transmission is aborted.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.

(e) Physical address: 250DVD Auto Player (disc player changer)

HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or starting an engine.

*2: This code may be stored when the ignition switch is turned again 1 min. after engine start.

*3: This code may be stored when the ignition switch is turned again after engine start.

*4: When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

Logical address	DTC	Diagnosis item	Diagnosis content	Countermeasure and inspected parts
01 (Communication Control)	D6 *1	Absence of Master	Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, stereo component controller assembly was disconnected.	Check harness for power supply of stereo component controller assembly. Check harness for communication system of stereo component controller assembly. Check harness for power supply of disc player changer. Check harness for communication system of disc player changer.
01 (Communication Control)	D7	Communication Check Error	Component in which this code is recorded is was disconnected from system after engine start. Or, when recorded this code, stereo component controller assembly was disconnected.	Check harness for power supply of stereo component controller assembly. Check harness for communication system of stereo component controller assembly. Check harness for power supply of disc player changer. Check harness for communication system of disc player changer.
01 *4 (Communication Control)	DC	Transmission Error	Transmission to component shown by sub-code has been failed. (Detecting this DTC does not necessarily mean actual failure.)	If same sub-code is recorded in other component, check harness for power supply and communication system of components shown by sub code.
01 (Communication Control)	DD *3	Master Reset (Momentary Interruption)	After engine is started, radio receiver assembly assembly was disconnected from system.	Check harness for power supply of stereo component controller assembly. Check harness for communication system of stereo component controller assembly. Check harness for power supply of disc player changer. Check harness for communication system of disc player changer.
01 (Communication Control)	DF *4	Master Error	Due to defective condition of component with a display, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and master component.	Check harness for power supply of stereo component controller assembly. Check harness for communication system of stereo component controller assembly. Check harness for communication system between stereo component controller assembly.
01 (Communication Control)	E0 *1	Registration Completion Instruction Error	"Registration Completion Instruction" command from master cannot be received.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 (Communication Control)	E2	ON / OFF Instruction Parameter Error	Error is detected in ON / OFF control command from disc player changer.	Replace DVD player.
01 (Communication Control)	E3	Registration Request Transmission	Registration Request command is output from slave component. Registration connection check instruction, Registration Request command is output from sub-master component.	Since this DTC is provided for engineering purposes, it may be detected when actual exists.
01 (Communication Control)	E4	Multiple Frame Abort	Multiple frame transmission is aborted.	Since this DTC is provided for engineering purposes, it may be detected when no actual failure exists.
01 (Communication Control)	22	RAM Error	Abnormal condition of RAM is detected.	Replace disc player changer.
45 (DVD)	44	DVD Error	Error is detected in disc player changer.	Replace radio and player.
45 (DVD)	45	EJECT Error	Disk cannot be ejected.	Check for foreign matter in disc player changer.
45 (DVD)	46	Disc crack	A crack and dirt are in a disc.	Inspect disc.
45 (DVD)	47	DVD High Temp	High temperature is detected in disc player changer.	Do not stop the operation for a period od time.
45 (DVD)	48	DVD Excess Current	Excess current malfunction in insertion / ejection.	Replace disc player changer.
45 (DVD)	50	A Malfunction in insertion / ejection	Operating malfunction in insertion / ejection.	Replace disc player changer.
45 (DVD)	51	A malfunction in switching disc	Operating malfunction in switching disc.	Replace disc player changer.