display TOYOTA AVALON 2001 Service User Guide

Service Check Mode
ºCHECº Detail Display Mode
Physical Address of Component
Logical Address
Number of Occurrence (*2)
DTC (Refer to diagnostic
trouble code chart)
Continued if more than one DTC is identified.Details for 1st
Component
Details for 2nd
Component Old
P3A0
ch2ch3
TUNE UPTUNE DOWN
P190
COdE
DTC (Refer to diagnostic
trouble code chart)
ch5 (Along)
CLr
: Indicates a switch operationAuxiliary Code (*1)
Connection Check Code (*2)
Logical Address
Connection Check Code (*2)
TUNE UP
TUNE DOWN
Detail code is displayed
cyclically.
Auxiliary Code (*1)
Number of Occurrence (*2)
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE UPTUNE DOWN
TUNE UP
(*1): There are some
diagnostic codes witch might
not be displayed.
In this case, º- - -º displayed.
(*2): There are some
diagnostic codes witch
might not be displayed.
In this case, º- -º displayed.1L
**
1dd4
2L**
2d43
2P***
2n**
1P***
1n**
2c
1c- -
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(f) ºOldº Detail Display Mode Screen

I19691
ºTUNE DOWNº Switch
º1chº Switch º2chº Switch º3chº Switchº4chº Switch º5chº Switchº6chº Switch
ºDISCº Switch
ºTUNE UPº Switch
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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.

H: This shows the equipment has a diagnosis code.
190: Physical address
1: This is the number allotted to the diagnosis code
that occurred.
21: DTC No.
Last Code No.: NO DTC No.
Pressing TURN ºDOWNº
Pressing TURN ºUPº
.
.
..
.
.1: This is the number allotted to the diagnosis code
that occurred. BE-134
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HINT:
It sometimes takes approx. 40 secs. till the system inspection is completed.
The chart below is an example of when diagnosis code º21º appears on the physical address (190)
equipment. (ROM error occurs on the radio receiver.)
The smaller code numbers (physical address) are displayed in order (code No., diagnosis code, sup-
port code of diagnosis code (object equipment)).
When no error is detected in the system, º00º is displayed.
When an error code is detected, up to 6 codes per one system are displayed. Pressing TUNE ºUPº
or ºDOWNº switches the display.
In the system check mode, when pressing º6º of PRESET switch the mode returns to LAN check mode.
(d) Diagnosis memory
(1) In LAN check mode, when pressing º2º of PRESET switch the mode turns to the diagnosis
memory mode. (ºCODEº is displayed.)
The results of self diagnosis performed over tuner and connected equipment are memorized and
displayed.
(2) Perform the operation shown in the following illustration, then read the result of the inspection.
HINT:
The smaller code numbers (physical address) are displayed in order (code No. , periodic communica-
tion number when error occurs, diagnosis code, and support code of diagnosis code (object equip-
ment)).
When no error is detected in the system, º00º is displayed. When an error code is detected, up to 6
codes per one system are displayed. Pressing TUNE ºUPº or ºDOWNº switches the display. Each diag-
nosis code is same as code in the system check mode.
When pressing º6º of PRESET switch, the mode returns to LAN check mode.
The following illustration below is an example of when diagnosis code ºD1º appears on the code (190)
and (240 or 360) equipment. (Communication error occurs between the radio receiver and CD chang-
er.)

H: This shows the equipment has a diagnosis code.
190: Physical address
1: This is the number allotted to the diagnosis code
that occurred.
Last Code No.
.
.
..
.
.
06: Periodic communication number of when
occurring in the diagnosis memory code.
Pressing TURN ºDOWNºPressing TURN ºUPº
21: Periodic communication number of when
occurring in the diagnosis memory code.
1: This is the number allotted to the diagnosis code
that occurred.
d1: DTC No.
1: This is the number allotted to the diagnosis code
that occurred.
360: Physical address
(Equipment that is communicating code)
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(e) Diagnosis memory clear
(1) After error is fixed, start up the diagnosis mode.
(2) Continue pressing preset switch º5º for 2 secs. (CLr is displayed.)
(3) Press the preset switch º2º and transfer to the diagnosis memory mode and check that the normal
code (00) is output.

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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.

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*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.

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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

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5. PROBLEM SYSMPTOMS TABLE
NOTICE:
When replacing the internal mechanism (computer part) of the audio system, be careful that no part
of your body or clothing comes in contact with the terminals of the leads from the IC, etc. of the re-
placement part (spare part).
HINT:
This inspection procedure is a simple troubleshooting which should be carried out on the vehicle during sys-
tem operation and was prepared on the assumption of system component troubles (except for the wires and
connectors, etc.).
Always inspect the trouble taking the following items into consideration.
Open or short circuit of the wire harness
Connector or terminal connection fault
ProblemFlow chart No.
RadioRadio not operating when power switch turned to 'ON'.1
Display indicates when power switch turned to 'ON', but no sound (including
'noise') is produced.2
Noise present, but AM - FM not operating.3
Any speaker does not work.4
Any AM or FM does not work.5
Few preset turning bands.5
Reception poor.6
Sound quality poor.7
Preset memory disappears.8
Tape PlayerCassette tape cannot be inserted.9
Cassette tape inserted, but no power.10
Power coming in, but tape player not operating.11
Any speaker does not work.12
Sound quality poor.13
Tape jammed, malfunction with tape speed or auto-reverse.14
Cassette tape will not eject.15
CD Auto ChengerCD magazine cannot be inserted.16
CD magazine inserted, but no power.17
Power coming in, but CD player not operating.18
Sound jumps.19
Sound quality poor (Volume faint).20
Any speaker does not work.21
CD magazine will not be ejected.22
Power AmplifierNo power coming in.23
Power coming in, but power amplifier not operating.24
Any speaker does not work.25
NoiseNoise occurs26
Noise produced by vibration or shock while driving.27
Noise produced when engine starts.28
The term ºAMº includes LW,MW and SW, and the term ºFWº includes UKW.

2 RadioDISPLAY INDICATES WHEN POWER SWITCH TURNED TO
ºONº, BUT NO SOUND (INCLUDING ºNOISEº) IS PRODUCED
+ B wire harness faulty.
GND faulty.
Power amplifier faulty.
Speaker wire harness faulty. GND faulty. Is tape player operating normally?
Check if RAD-No.2 fuse is OK?Ye s
NG
No OK No
No
No
No OK
OK
OK Ye s
Ye s
Ye s
Ye sNG
NG
NG Check if RAD-No.1 fuse is OK?
Radio assembly faulty. Recheck system after repair.Replace fuse.
ACC wire harness faulty. Radio assembly faulty.
Replace fuse.
Does continuity exist in speaker wire harness?
Temporarily install another speaker. Functions OK?
Hiss noise from speaker?Ye s
Ye s NoNo
No Ye sPower amplifier faulty.
Power amplifier faulty.
Recheck system after repair. Speaker faulty.
Is power supplied to ACC terminal of power amplifier?
Check if GND (wire harness side) of power amplifier
grounded normally? Is power supplied to +B terminal of power amplifier?
Is power supplied to ACC terminal of radio receiver?
Is power supplied to +B terminal of radio receiver?
Check if GND (wire harness side) of power amplifier
grounded normally?
- BODY ELECTRICALAUDIO SYSTEM
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BE1DO-01
I12772
Connector ºAº
Connector ºFº
Connector ºGº
Connector ºDº Connector ºEºConnector ºBº
Multi Information Display:
Connector ºCº Combination Meter:
- BODY ELECTRICALCOMBINATION METER
BE-43
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CIRCUIT