2001 TOYOTA AVALON CD changer

BE214-01
I10058
Radio Receiver Assembly Power Amplifier CD Auto Changer BE-126
- BODY ELECTRICALAUDIO SYSTEM
1730 Author
: Date
:
2001 AVALON (RM808U)
AUDIO SYSTEM
DESCRIPTION
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.
(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, there used to be a case that
malfunction occurred such as sound did not come out. This problem has been resolved by stan-
dardization 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) Conventionally, a new product developed by a manufacture could not be used due to a lack of
compatibility with other manufactures products. Because of this new standard, users can enjoy
compatible products provided for them timely.
(c) The above descriptions are the objectives to introduce AVC-LAN. By this standardization, develop-
ment of new products will no longer cause systematic errors. Thus, this is very effective standard for
a product in the future.
HINT:

When +B short or GND short is detected in AVC-LAN circuit, communication stops. Accordingly the
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, radio receiver is the master unit.)

The car audio system using AVC-LAN circuit has a diagnosis function.

Each product has its own specified numbers called physical address. Numbers are also allotted to
each function in one product, which are called logical address.

Normal Mode
Service Check Mode
 A long beep (3 sec.)  3 beeps
Memory Clear ModeAfter 3 sec.
P240
ECHn
CLr Example:
Connection parts ( physical address): Radio receiver (P190), CD Auto Changer (P240), MD chnger (P3A0)
Turn ignition switch ON.
Push the ºDISCº switch 3 times
while pressing ºch1º and ºch6º
swithes.
HINT:
To exit from diagnosis mode,
press the ºDISCº switch for 1.7
sec. or turn ignition switch to
OFF
ºECHnº Detail
Display Mode
(Refer to (f))
CHEC
ºCHECº Detail
Display Mode
(Refer to (g))
Physical AddressP190
Physical AddressP3A0
Old
ºOldº Detail
Display Mode
(Refer to (h))
Result (Replaceing)
Result (Check)
Result (Old)
 After the memory is cleared, only the physical address is displayed cyclically.TUNE UP
TUNE UP
TUNE UP
TUNE UP TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE UP
ch5 (1.7 sec.)
: Indicates a switch operation
ch2
ch3
ch2
ch3
ch2
ch3
 When re-checking (ch1 switch is pressed) in that condition, the result is also
displayed as shown above.
- BODY ELECTRICALAUDIO SYSTEM
BE-129
1733 Author
: Date
:
2001 AVALON (RM808U)
(c) Display Screen for Service Check.

I19691
ºTUNE DOWNº Switch
º1chº Switch º2chº Switch º3chº Switchº4chº Switch º5chº Switchº6chº Switch
ºDISCº Switch
ºTUNE UPº Switch
- BODY ELECTRICALAUDIO SYSTEM
BE-133
1737 Author
: Date
:
2001 AVALON (RM808U)
2. Except Europe models:
DIAGNOSIS FUNCTION
Error codes over tuner and connected equipment are displayed on the screen of tuner.
(a) Diagnosis start-up
For shifting to diagnosis mode, push ºDISCº switch 3 times with pressing º1º and º6º of PRESET switch
at the same time while the audio power is OFF and ACC is ON.
To exit from diagnosis mode, press ºDISCº switch for 2 seconds or turn the ignition key OFF.
(When º1-190º is displayed, the mode is transferred to LAN check mode.)
(b) LAN check
When starting up the diagnosis mode, the mode turns to LAN check mode, the screen displays the
code numbers (physical address) of tuner and connected equipment. Smaller codes are displayed in
order, displayed code numbers are switched by operating TUNE ºUPº or ºDOWNº switch. In LAN check
mode, by pressing º5º of PRESET switch for more than 2 secs., diagnosis memory of each equipment
can be deleted, when deletion is completed, the mode returns to LAN check mode.
Code No. (physical address) List
Code No. (physical address)Equipment name
190Radio receiver assembly (Audio head unit)
240CD changer (in Luggage room)
360CD changer (in center console and glove compartment box)
440Power amplifier
(c) System check
When pressing º1º of PRESET switch in LAN check mode, the mode turns to the system check
mode, the system performs self diagnosis of connected equipment and displays the re-
sults.(ºSYSº (showing the system is under detection) is displayed.)
Perform the operation shown in the following illustration, then read the result of the inspection.

BE-138
- BODY ELECTRICALAUDIO SYSTEM
1742 Author
: Date
:
2001 AVALON (RM808U)
Logical address: 01 (Communication control)
DTCDiagnosis itemDiagnosis contentCountermeasure and inspected parts
D6
*1Absence of MasterComponent in which this code is recorded
has been disconnected from system with
ignition in ACC or ON. Or, when this code
was recorded, multi-display assembly was
disconnected.Check harness for power supply of radio
and player.
Check harness for communication system
of radio and player.
Check harness for power supply of stereo
component amplifier.
Check harness for communication system
of stereo component amplifier.
D4Communication Check ErrorComponent in which this code is recorded is
or was disconnected from system after en-
gine start. Or, when recording this code,
multi-display assembly was disconnected.Check harness for power supply of radio
and player.
Check harness for communication system
of radio and player.
Check harness for power supply of stereo
component amplifier.
Check harness for communication system
of stereo component amplifier.
D1
*2Transmission ErrorTransmission to component shown by auxil-
iary code has been failed.
(Detecting this DTC does not necessarily
mean actual failure.)If same auxiliary code is recorded in order
component, check harness for power supply
and communication system of all compo-
nents shown by code.
(c) Physical address: 240 CD Auto Changer
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 engine key is turned 1 min. again after engine start.
*3: It may be stored when the engine key is turned again after engine start.
*4: It may be stored when the engine key is turned again after engine start.
*5: 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.
(1) Logical address: 01 (Communication control)
DTCDiagnosis itemDiagnosis contentCountermeasure and inspected parts
DITransmission ErrorTransmission to component shown by auxil-
iary code has been failed.
(This code does not necessarily mean actu-
al failure.)If same auxiliary code is recorded in other
component(s), check harness for power
supply and communication system of com-
ponents shown sub code.
D4
*5Connection check Error
Component in which this code is recorded is
or was disconnected from system after en-
gine start. Or, when recording this code,
multi-display assembly was disconnected.Check harness for power supply of multi-
display.
Check harness for communication system
of multi-display.
Check harness for power supply of CD
auto changer.
Check harness for communication system
of CD auto changer.
(2) Logical address: 63 (CD Auto Changer)
DTCDiagnosis itemDiagnosis contentCountermeasure and inspected parts
60CD ErrorError is detected in CD auto changer.Replace CD auto changer
61EJECT ErrorMagazine cannot be ejected.Replace CD auto changer
62No Disc ReadoutDisc cannot be read.Inspect CD

DTCDiagnosis item
Diagnosis contentCountermeasure
and inspected parts
D1
FF
60Radio receiver check.
50Cassette error
Transmitter error
Diagnosis no response
CD error
61
EJECT error
62
63
64
67DISC inside out/flaw
Pickup temperature
detection
Excessive current
detection
Tray insertion/
discharging errorThere is an error in cassette
deck.
Communication with the
equipment that is
communicating has failed
successively.
Result of diagnosis is not
issued from start to finish.
Error codes other than
61-69 are detected.
CD is not ejected.
CD is inserted inside
out or it has a flaw.
High temperature of CD
changer is detected.
Excessive current to
CD changer is detected.
An error occurs in insertion
and discharging operation of
CD changer tray.Radio receiver check.
CD changer check.
CD changer check.
Magazine check.
CD check.
CD changer check.
CD changer check.
Magazine check.Radio receiver check.
Wire harness and
connecter check.
CD
(240)
(360)System
Check
Diagnosis
memory

X

X
X
X
X
X
X
X



 Head
Unit
(190) Parts
Name
D2Periodic
communication
no response
Error in periodic
communication. Wire harness and
connector X

68
D1
D4Elevator error
Periodic communication
errorAn error occurs in
elevator of CD changer
elevator.X

X

 Transmitter error
 Radio receiver check.
 Wire harness check.
CD changer check.
Communication with the
equipment that is
communicating has failed
successively.
Connection confirmation
has not come from the
equipment that is
communicating
- BODY ELECTRICALAUDIO SYSTEM
BE-139
1743 Author
: Date
:
2001 AVALON (RM808U) 63
CD Auto Changer Temp. Too HighReadout cannot be done because tempera-
ture around player's pick-up (reading part)
is too high.With IG switch OFF, leave vehicle in cool
shaded place for a while and re-check.
After deleting the DTC memory, if same
code detected, replace CD auto changer.
64CD Changer Excess CurrentExcess current is applied CD auto changer.Replace CD auto changer
4. Except Europe models:
DIAGNOSIS CODE LIST
If there is ºOº in the column of system check, an error can be detected when the mode is switched to
the system check mode.
If there is ºOº in the column of diagnosis mode, each unit is monitoring whether or not it has failure.
In case of detectng failure, it memorizes DTC.