2001 TOYOTA AVALON Master switch

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.

BE-136
- BODY ELECTRICALAUDIO SYSTEM
1740 Author
: Date
:
2001 AVALON (RM808U)
3. Europe models:
DIAGNOSIS CODE LIST
TermsMeaning
Physical addressThree-digit code (shown in hexadecimal) which is given to each component com-
prising the AVC-LAN.
Corresponding to the function, individual symbols are specified.
Logical addressTwo-digit code (shown in hexadecimal) which is given to each function comprising
the inner system of the AVC-LAN.
(a) Physical address 190: Radio receiver assembly
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 is stored when 180 sec. has passed after the power supply connector is pulled out after engine
start.
*3: It may be stored when the engine key is turned 1 min. 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
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 system of
multi-display.
Check harness for communication system
of multi-display.
Check harness for power supply system of
radio and player.
Check harness for communication system
of radio and player.
D8
*2No Response to Connection CheckComponent shown by auxiliary code is or
had been disconnected from system after
engine is start.
D9Check harness for power supply system of
component shown by auxiliary code.
Check harness for communication system
of component shown by auxiliary code.
D9
*1Last Mode ErrorComponent 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.
DANo Response to ON/OFF InstructionNo 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.
DB
*1Mode Status ErrorDual alarm is detected.Check harness for power supply of compo-
nent shown by auxiliary code.
Check harness for communication system
of component shown by auxiliary code.
DC
*3Transmission 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.

- BODY ELECTRICALAUDIO SYSTEM
BE-137
1741 Author
: Date
:
2001 AVALON (RM808U) DD
*4
Master Reset (Momentary Interruption)After engine is started, multi-display assem-
bly was disconnected from system.Check harness for power supply system of
multi-display.
Check harness for communication system
of multi-display.
Check harness for power supply system of
radio and player.
Check harness for communication system
of radio and player.
If this error occurs frequently, replace mul-
ti-display assembly.
DE
*4Slave Reset (Momentary Interruption)After engine is started, slave component
was disconnected from system.Check harness for power supply of compo-
nent shown by auxiliary code.
Check harness for communication system
of component shown by auxiliary code.
DF
*5Master ErrorDue 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 multi-
display assembly.
Check harness for communication system
of multi-display assembly.
Check harness for communication system
between multi-display assembly and sub-
master component.
E0
*1Registration Completion Instruction ErrorºRegistration Completion Instructionº com-
mand from master cannot be received.Since this DTC is provided for engineering
purpose, it may be detected when no actual
failure exists.
E1
*1Audio processor ON errorWhile source equipment is operating, AMP
output is stopped.Check harness for power supply of multi-
display assembly.
Check harness for communication system
of multi-display assembly.
E2ON/OFF Instruction Parameter ErrorError occurs in ON/OFF controlling com-
mand from multi-display assembly.Replace multi-display assembly.
E3
*1Registration Request TransmissionRegistration 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
purpose, it may be detected when no actual
failure exists.
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.Since this DTC is provided for engineering
purpose, it may be detected when no actual
failure exists.
(2) Logical address: 61 (Cassette switch)
DTCDiagnosis itemDiagnosis contentCountermeasure and inspected parts
40Mechanical of Media ErrorMalfunction due to mechanical failure is
identified.
Or cassette tape is cut or entangled.Inspect cassette tape.
Replace radio and player.
(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 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: 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.

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

BE0IE-03
I12531
Brake Master Cylinder

Brake Fluid Level
Warning Switch
Engine Room
Junction Block

SRS WRN Fuse
Washer Tank

Washer Fluid Level
Warning Switch
Combination Meter

Meter Circuit
Light Control
Rheostat
Driver Side Junction Block

GAUGE No.1 Fuse

PANEL Fuse

ECU-B No.1, 2 Fuss

ECU-IG No.2 Fuse

RAD No.1 Fuse

DOME Fuse

ECU ACC Fuse Parking Brake
Switch
Ignition Switch
Multi Information Display
- BODY ELECTRICALCOMBINATION METER
BE-41
1645 Author
: Date
:
2001 AVALON (RM808U)
COMBINATION METER
LOCATION

Insert already registered master key in the key cylinder
and turn the ignition switch ON.
Listing hand-held tester select master key registration.
Remove the master key.
Insert key to be registered in key cylinder.
(Security indicator blinks)
After 60 secs., additional master key is registered.
(Security indicator OFF)
The registration mode completes when pulling out the key
within 10 secs. and the brake pedal is depressed or after
indicator is off 10 secs. pass.Within 20 secs.
Within 10 secs.
HINT:
Please follow the screen of the hand-held tester for more detailed procedure.
- BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE-175
1779 Author
: Date
:
2001 AVALON (RM808U)
(2) Using hand-held tester:

Listing TOYOTA hand-held tester select sub-key regis-
tration.
Remove the master key.
Insert key to be registered in key cylinder.
(Security indicator blinks)
After 60 secs., additional sub-key is registered.
(Security indicator OFF)
The registration mode completes when pulling out the key
within 10 secs. and the brake pedal is depressed or after
indicator is off 10 secs. pass.Within 20 secs.
Within 10 secs.
Insert already registered master key in the key cylinder
and turn the ignition switch ON.
HINT:
Please follow the screen of the hand-held tester for more detailed procedure.
- BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE-177
1781 Author
: Date
:
2001 AVALON (RM808U)
(2) Using hand-held tester:

2. Require key code deletion from hand-held tester.
(Security indicator blinks)
3. Remove the master key.
HINT: END
Within 10 secs.
(Key code erased) 1. Insert already registered master key in the key cylinder
and turn the ignition switch ON.

When the key cannot be pulled out in the step 3, key code deletion is canceled.
(Security indicator is OFF)

Please follow the screen of the hand-held tester for more detailed procedure.
- BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE-179
1783 Author
: Date
:
2001 AVALON (RM808U)
(2) Using hand-held tester: