2001 TOYOTA AVALON engine
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- 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.
Page 167 of 1897
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
Page 170 of 1897
- BODY ELECTRICALAUDIO SYSTEM
BE-141
1745 Author: Date:
2001 AVALON (RM808U)
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.
Page 188 of 1897
27 Noise NOISE PRODUCED BY VIBRATION OR SHOCK WHILE DRIVING
No
Ye s Is speaker properly installed?
Noise is produced from static eletricity accumulating in the vehicle body. With vehicles stationary lightly tap each system.
Is noise produced?Install properly.
Each system faulty. Is speaker properly installed?
No
No Ye s
Ye s
28 Noise NOISE PRODUCED WHEN ENGINE STARTS
NoYe s Whistling noise which becomes high-pitched when
accelerator strongly depressed, disappears shortly
after engine stops.Generator noise.
A/C noise.
Fuel gauge noise.
Horn noise.
Ignition noise.
Turn signal noise.
Washer noise.
Engine coolant temp. gauge noise.
Wiper noise. Whining noise occurs when A/C is operating.
Scratching noise occurs during sudden acceleration, driving on rough
roads or when ignition switch is turned ON.
Clicking sound is heard when horn button is pressed, then
released. Whirring/grating sound is heard when pushed
continuously.
Murmuring sound stops when engine stops.
Tick-tack noise occurs in co-ordination with blinking
offlasher.
Noise occurs during window washer operation.
Scratching noise occurs while engine is running,
and continues a while even after engine stops.
Scraping noise in line with wiper beat.
Other type of noiseYe s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s No
No
No
No
No
No
No
No
- BODY ELECTRICALAUDIO SYSTEM
BE-159
1763 Author: Date:
2001 AVALON (RM808U)
Page 194 of 1897
I12781
: Fuel receiver gauge
: Engine coolant temperature gauge
: Tachometer F
E
T
F
E
T
P
R
N
D
2
L
IlluminationB2 A11
A
No.Wire Connector Side
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13 BPark/Neutral position switch (P position)
Park/Neutral position switch (R position)
Park/Neutral position switch (N position)
Park/Neutral position switch (D position)
Park/Neutral position switch (2 position)
Park/Neutral position switch (L position)
O/D main switch
-
Turn signal switch (Right)
Turn signal switch (Left)
Headlight dimmer switch
-
ECU-B Fuse
ECU-IG Fuse
F (PANEL) Fuse
-
Multi-information display meter
- 17
18
19
20
21-
-
Rheostat Light Control Volume
Ground
Ground
22
Theft Deterrent ECU
14
15
16-
-
17
18-
- Combination meter:
A15
A22
A9
A10
A1
A2
A3
A4
A5
A6
A16S
E
2
PROMA20 A12
B3
B4
B5
B6
B8
B9
B11
B12
B13
B14
B10
A7
A21
A19Multi
Information
Display
Fuel level warning
O/D off indicator
Security indicator
Left turn indicator
: Speedometer
S
Hi-beam indicator
A14
Right turn indicatorMulti-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter
Multi-information display meter 5
HEAD-LP Fuse BE-44
- BODY ELECTRICALCOMBINATION METER
1648 Author: Date:
2001 AVALON (RM808U)
Page 197 of 1897
C
No.Wire Connector Side
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16ECU-IG No. 2 Fuse
Injector *
1
F (Panel) Fuse
Outside temperature sensor
ECM *
1
ABS ECU
Fuel sender gauge
Fuel sender gauge
Light control volume
RAD No. 1 Fuse Ground
ECU-ACC Fuse
-
Engine coolant temperature sendoer gauge
EFI
Heater control ECU *
117
18
19
20
21Speed control unit
Fuel sender gauge
-
Sender ground
Ground 22Starter Relay
D1
2
3
4
6
7
8
9
10
11
12
13
14
15
16-
Combination meter
-
-
-
- 17
18 -Low oil pressure warning switch *
2
Compressor lock sensor *2
A/C magnet switch
Evaporator temperature sensor *
2
A/C switch *2
A/C indicator *2
-
*1: Hi GradeECM
*2: Lo Grade 5
5Combination meter
Combination meter
Combination meter
Combination meter
Combination meter Combination meter
Combination meter
Combination meter
Combination meter
Combination meter
Combination meter
E
No.Wire Connector Side
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16
17
18
19
205 1
2Compass sensor *1
Compass sensor *1
Compass sensor *1
-
-
-
-
-
-
-
-
-
- Compass sensor *
1
7
Compass sensor *1
- BODY ELECTRICALCOMBINATION METER
BE-47
1651 Author: Date:
2001 AVALON (RM808U)
Page 204 of 1897
I12782
Connector ºGº
Connector ºDºConnector ºFº
Connector ºCº Connector ºEº BE-54
- BODY ELECTRICALCOMBINATION METER
1658 Author: Date:
2001 AVALON (RM808U)
2. INSPECT MULTI INFORMATION DISPLAY CIRCUIT
Disconnect connector ºCº, ºDº, ºEº, ºFº, ºGº from the multi in-
formation display and inspect the connectors on the wire har-
ness side as shown in the table.
Tester connectionConditionSpecified condition
C1 G dIgnition switch OFF or ACCNo voltageC1 - GroundIgnition switch ONBattery positive voltage
C3 - GroundLight control switch TAIL or HEADBattery positive voltage
C4 - C21Outside temperature a + 25 °C (77 °F)Resistance 1.6 - 1.8 kW
C5 G dEngine runningBattery positive voltageC5 - GroundEngine stoppedNo voltage
Ignition switch ON and fuel sender gauge flat UP0.3 - 0.6 V
C8 - C9Ignition switch ON and fuel sender gauge float
DOWN4.9 - 6.9 V
C9 - C19ConstantContinuity
C10 - GroundIgnition switch ON and rheostat ONNo voltage
C10 - GroundIgnition switch ON and rheostat OFF4.5 - 5.5 V
C11 - GroundConstantContinuity
C12 - GroundConstantBattery positive voltage
C13 G dIgnition switch ACC or ONBattery positive voltageC13 - GroundIgnition switch OFFNo voltage
F1 - GroundWindow washer level warning switch ONContinuity
F4 - GroundIgnition switch OFF or ACCNo voltage
F4 - GroundIgnition switch ONBattery positive voltage
G2 - GroundDoor courtesy switch ONContinuity
G3 - GroundConstantBattery positive voltage
G5 - GroundConstantBattery positive voltage
Page 205 of 1897
I12784
Connector ºDº
Connector ºBº
- BODY ELECTRICALCOMBINATION METER
BE-55
1659 Author: Date:
2001 AVALON (RM808U)
G11 G dIgnition switch ONBattery positive voltageG11 - GroundIgnition switch OFF or ACCNo voltage
G12 - GroundEngine runningBattery positive voltage
If circuit is not as specified, wiring diagram and inspect the cir-
cuits connected to other parts.
3. INSPECT BETWEEN COMBINATION METER AND
MULTI INFORMATION DISPLAY CIRCUIT
Disconnect connector ºBº, ºDº from the multi information display
and combination meter inspect the connectors on the wire har-
ness side as shown in the table.
Tester connectionSpecified condition
B2 - D2Continuity
B3 - D3Continuity
B4 - D4Continuity
B5 - D5Continuity
B6 - D6Continuity
B8 - D8Continuity
B9 - D9Continuity
B10 - D10Continuity
B11 - D11Continuity
B12 - D12Continuity
B13 - D13Continuity
B14 - D14Continuity
If circuit is not as specified, wiring diagram and inspect the cir-
cuits connected to other parts.
4. INSPECT SPEEDOMETER ON-VEHICLE
Using a speedometer tester, inspect the speedometer for allow-
able indication error and check the operation of the odometer.
HINT:
Tire wear and tire over or under inflation will increase the indica-
tion error.
USA (mph)CANADA TAIWAN (km/h)
Standard indication Allowable range Standard indication Allowable range
20 18 - 24 20 17 - 24
40 38 - 44 40 38 - 46
60 58 - 66 60 57.5 - 67
80 78 - 88 80 77 - 88
100 98 - 110 100 96 - 109
120 118 - 132 120 115 - 130
140 134 - 151.5
160 153 - 173
If error is excessive, replace the speedometer.