Page 183 of 1897
CD auto chenger faulty.
Power amplifier faulty.
Recheck system after repair. Temporarily install another speaker.
Function OK?21 CD Auto Chenger ANY SPEAKER DOES NOT WORK
Speaker wire harness faulty.
Speaker faulty. Is hiss noise produced by non-functioning speaker?
Does continuity exist in speaker wire harness? Is radio operating normally?
Ye sYe s
Ye s
Ye s No
No
NoNoRadio assembly faulty.
Recheck system after repair.
CD auto chenger faulty. 22 CD Auto Chenger CD MAGAZINE WILL NOT BE EJECTED
Is auto search button of radio
operating normally?
NoRadio assembly
faulty.
Replace fuse.
+B wire harness faulty.
Power amplifier faulty.
Radio assembly faulty. Check if RADIO No.1 fuse is OK?No
No
No Ye s
NG
OK
Ye s
Ye sYe s
Is power supplied to +B terminal of power amplifier?
Is power supplied to +B terminal of radio receiver?Is power supplied to +B terminal
of CD auto chenger? BE-154
- BODY ELECTRICALAUDIO SYSTEM
1758 Author: Date:
2001 AVALON   (RM808U) 
     
        
        Page 184 of 1897
23 Power Amplifier NO POWER COMING IN
+ B wire harness faulty.
GND faulty.
Power amplifier or wire harness faulty.
Power amplifier or 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.Replace fuse.
ACC wire harness faulty. Radio assembly faulty.
Replace fuse.
Check if GND (wire harness side) of power amplifier
grounded normally?Is power supplied to ACC terminal of power amplifier?
Is power supplied to +B terminal of power amplifier?
Is power supplied to ACC terminal of radio assembly?
Is power supplied to +B terminal of radio assembly?
Check if GND (wire harness side) of radio assembly
grounded normally?
- BODY ELECTRICALAUDIO SYSTEM
BE-155
1759 Author: Date:
2001 AVALON   (RM808U) 
     
        
        Page 185 of 1897

24 Power AmplifierPOWER COMIMG IN, BUT WOOFER (POWER) AMPLIFIER NOT
OPERATING
+ 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.
Is there continuity 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 assembly?
Is power supplied to +B terminal of radio assembly?
Check if GND (wire harness side) of radio assembly
grounded normally? BE-156
- BODY ELECTRICALAUDIO SYSTEM
1760 Author: Date:
2001 AVALON   (RM808U) 
     
        
        Page 191 of 1897
BE0I4-04
I12528
Ignition Switch
Back-Up Light Relay
Back-Up Light
Driver Side Junction Block
 ECU-ACC Fuse
- BODY ELECTRICALBACK-UP  LIGHT SYSTEM
BE-33
1637 Author: Date:
2001 AVALON   (RM808U)
BACK-UP  LIGHT SYSTEM
LOCATION 
     
        
        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 198 of 1897
No.Wire Connector Side
1
2
3
4
6
7
8
9
10
14
15
16Washer fluid level warning switch
Body ECU
Brake fluid level warning switch
GAUGE Fuse
Lo oil pressure warning switch
ECM
-
TRAC
VSC ECU
Light failure Sensor
-
-
G1
2
3
4
6
7
8
9
10
11
12
13-
Driver's door courtesy switch
DOME Fuse
Cruise ECU
Airbag ECU
ABS&BA&DRAC&VSC ECU
-
Body ECU
Generator L terminal Ignition switch 5 ABS ECU
5 AIR BAG WRN Fuse F
-
- BE-48
- BODY ELECTRICALCOMBINATION METER
1652 Author: Date:
2001 AVALON   (RM808U) 
     
        
        Page 214 of 1897
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