wiring diagram TOYOTA AVALON 2001 Service User Guide

F09800
ABS Actuator
and ECU
A714
STP Driver Side J/B
BatteryJ/B No. 4
S4
Stop Light SwitchR7
Rear Combination
Light LH
G-W
14
IE1 G-W
G-W
J/B No. 3
16
4D 16
4F G-W3
3F 3
3C 5
1B 3
1D
4
1E
12R
11
1D STOP
FL Block
FL MAIN
L5
Light Failure
SensorStop
J12
J/C 1
1G W
1
F101
F6B5
IK1
7
Stop
36
G-R
B BBW-B
C
C
W-B
R8
Rear Combination
Light RH
36
G-R
G-R 2
1R-WH11
High Mounted
Stop Light
21
W-BC
C
W-B
BM ALTG-W G-W
G-W Driver Side J/B
J12
J/C DI-234
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
390 Author
: Date
:
2001 AVALON (RM808U)
DTC 58 Stop Light Switch Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
58
Stop light switch circuit is open, and stop light switch volt-
age is in the level between 55 % and 75 % of the battery
voltage.
Stop light switch

Stop light switch circuit
WIRING DIAGRAM
DI6NI-02

F09805
ABS Actuator and ECU
DLC2LG-R
LG-RLG-RTc 12
A7 7
1H 3B 4
Tc 4
EB5
1I 4
133A 3G
22 II2
W-BLG-R
DLC1 LG-R
LG-R6
4H 6
4A
Tc
E13J/B No. 4
Driver Side J/B J/B No. 3
11
F10163
DLC2
Tc E1
DLC1
Tc ON
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-245
401 Author
: Date
:
2001 AVALON (RM808U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting between terminals Tc and E1 of the DLC1 causes the ECU to display the DTC by flashing the
ABS warning light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Tc and E1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Tc and E
1 of
DLC1 or terminal Tc of DLC2 and body ground.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Tc
and E
1 are connected, the ECU may be defec-
tive.
NG
DI6NN-01

F09804
ABS Actuator and ECU
LG-B LG-B
Ts 11
A7 13
IE1 3
4BLG-B LG-B DLC1
Ts
W-BJ/B No. 4
E112
4A 11
II2
16
3
EB
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-247
403 Author
: Date
:
2001 AVALON (RM808U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalily in the speed sensor signal which cannot be detected by the
DTC check.
Connecting terminals Ts and E
1 of the DLC1 starts the check.
WIRING DIAGRAM
DI6NO-01

F09823
ABS & BA &
TRAC & VSC ECU
WA A2081
47 1
B
W-B
B
BJ4
J/C
W-B W-B
IG Battery FL MAINA21
Active
Light
Relay
F10F8 F61 1
1ALT
W W
W-B
B-L
2G
2H 11
5512 AM1
B
W-LIF17 W-L 22
Y-R
IG1 AM1 4
Ignition Switch W-R 1B 1C1G1B1D
4
3 4 3 1
1
213 10 GAUGE No. 1
ECU-IG
No. 2
Y-R3C
3D 2
11 R-B
R-B 4D
4FM6M6
4
Multi
Display 13 45 R-LR-L
4A4B
4H15
15 15
R-L 14
E1
ABS D2
DLC2
ABS
J/B No. 4
J/B No. 3 Driver Side J/B
Engine Room J/B
Engine Room R/B No. 5J/B No. 4
FL Block IG1
Relay
B
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI-325
481 Author
: Date
:
2001 AVALON (RM808U)
ABS Warning Light Circuit
WIRING DIAGRAM
DI6OI-03

F09818
ABS & BA &
TRAC & VSC ECU
VSCW A2070
P-B
R-B 15
4D
4F 134 4F15
4C P-BJ/B No. 4
M6 M6
R-B4
10 Multi Display
Driver Side J/B
1G1
1D 10
1B3
1C4
3
4 12 IG1 RelayGAUGE
No. 1
W-R 2
IG1 AM1
4 Ignition Switch
W-L W
IF1
7
W-L
5
5 1 2AM1 Engine Room R/B No. 5
B2G 2H11W-B
IG B-L
Battery
FL MAIN
B
F61 F10 F81 1
ALT
FL BlockVSC
Engine Room J/B DI-322
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
478 Author
: Date
:
2001 AVALON (RM808U)
DTC Always ON Malfunction in ECU
VSC Warning Light Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
Always ON
Either of the following 1. or 2. is detected:
1. There is a malfunction in the ECU internal circuit.
2. There is a malfunction in VSC warning light circuit.
Charging system

VSC warning light circuit
HINT:
TOYOTA hand-held tester may not be able to be used when ECU is defective.
WIRING DIAGRAM
DI6OH-03

F09823
ABS & BA &
TRAC & VSC ECU
WA A2081
47 1
B
W-B
B
BJ4
J/C
W-B W-B
IG Battery FL MAINA21
Active
Light
Relay
F10F8 F61 1
1ALT
W W
W-B
B-L
2G
2H 11
5512 AM1
B
W-LIF17 W-L 22
Y-R
IG1 AM1 4
Ignition Switch W-R 1B 1C1G1B1D
4
3 4 3 1
1
213 10 GAUGE No. 1
ECU-IG
No. 2
Y-R3C
3D 2
11 R-B
R-B 4D
4FM6M6
4
Multi
Display 13 45 R-LR-L
4A4B
4H15
15 15
R-L 14
E1
ABS D2
DLC2
ABS
J/B No. 4
J/B No. 3 Driver Side J/B
Engine Room J/B
Engine Room R/B No. 5J/B No. 4
FL Block IG1
Relay
B
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI-319
475 Author
: Date
:
2001 AVALON (RM808U)
DTC Always ON Malfunction in ECU
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
Always ON
Either of the following 1., 2. or 3. is detected:
1. The ECU connectors are OFF the ECU.
2. There is a malfunction in the ECU internal circuit.
3. There is a malfunction in ABS warning light circuit.

Charging system

ABS warning light circuit
HINT:
TOYOTA hand-held tester may not be able to be used when the ECU is defective.
WIRING DIAGRAM
DI6OG-02

F09824
Battery
FL MAIN F10 F8
F611 1
ALT
BFL BlockB-L 2G 2H1 1 Engine Room J/B B5512 AM1 Engine Room R/B No. 5 W-LIF17
W-L
2
IG1 AM1 4Ignition Switch W-R W
1C 1G
1B 1D
4
4 3 1
1
2
3 10 GAUGE No. 1 Driver Side J/B
IG1 Relay
W-B
IG
ED CUP
BRAKE
Multi DisplayM6 M3M6R-B
3 4
74D 4F13
4 J/B No. 4
R-B
L-O L-O6
IL1
R-WR-W
R-W
R-W
7
IC13A21
Active
Light
RelayR-Y 8A20
6040 74 68
32 ABS & BA &
TRAC & VSC ECU
FSS LBL PKB EBDW SP1
T5
T5
T5
T5 T5
Y-G
L-B
BR (Shielded)15
25 16
2
11
LBL LVL2PKB2BRL
PKB
Y-G Y-G
R-W
R-WJ/B No. 3
3B 3A
3A 3B 5
15
15 14
1Driver Side J/B
B1
Brake Fluid Level
Warning Switch Translate ECU
1H
1I 12
8
R-W
1 2
W-B J1 J/C
B B
W-BEngine Room J/B
44
2D2FW-B P3
Parking
Brake
SwitchA20
A20
A20
A20 DI-330
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
486 Author
: Date
:
2001 AVALON (RM808U)
BRAKE Warning Light Circuit
CIRCUIT DESCRIPTION

The BRAKE warning light lights up when the brake fluid is insufficient, when the parking brake is ap-
plied or when the EBD is defective.

If the translate ECU detects trouble, it makes VSC warning light lights up while prohibiting VSC & TRAC
control. At this time, the ECU records a DTC in memory. Connect terminals Tc and E
1 of the DLC1 or
DLC2 to make BRAKE warning light blink and output the DTC.
WIRING DIAGRAM
DI6OK-02

F09825
(Shielded)
FR-
2
IE1A2016
BR B-W
J4
J/C (Shielded) 1
A9
Right Front
Speed Sensor
19
IE1 18
IE120
BR-W
A
AA
A
BR
(Shielded)ABS & BA & TRAC
& VSC ECU
FR+ A2017
FL-
A2010
FL+ A208 L
B-R
BR (Shielded)
B-R
BR
2 1
A8
Left Front
Speed Sensor
A
(Shielded)RR-
A2012
RR+ A2011
RL-
A2014
RL+ A2013 V
LG
(Shielded) V
LG
(Shielded)Y
GIK110
IK1 11
IK112Y
G
ID111
ID1 21
ID122 2
1 A30
Right
Rear
Speed
Sensor
2
1 A29
Left
Rear
Speed
Sensor
IGBR
BR-W DI-268
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
424 Author
: Date
:
2001 AVALON (RM808U)
WIRING DIAGRAM

F09826
ABS & BA & TRAC
& VSC ECU
R+
SR
SFRH
SFRR
SFLH
SFLR
SRRH
SRRR
SRLH
SRLR
SMC1
SMC2
SRC1
SRC2 GR-R J/B No. 3
IF3Engine Room J/B No. 3
ABS
No. 2Engine
Room
J/BIE1
B-W2
A20
63A 19
3H GR-R
21
GR-RABS Solenoid Relay
FL
Block3
3 3 4
1
3 3
32 W
W-B
8 2F
10 2F
1 2G
1 F8
1 F6
B
FL
MAIN
Battery
EDW-BABS & BA & TRAC
& VSC ActuatorW-L RR176
36
A20
BS
SFRH
SFRR
SFLH
SFLR
SRRH
SRRR
SRLH
SRLR
SMC1
SMC2
SRC1
SRC226
A20
55
A20
5
A20
3
A20
6
A20
4
A20
53
A20
25
A20
49
A20
50
A20
54
A20
52
A20 W-G
W-R
G-O
GR
G-R
Y-B
L-Y
G-Y
V-W
B-Y
R-B B-W
W-G
W-R
G-O
GR
G-R
Y-B
L-Y
G-Y
V-W
B-Y
R-BIE12
IE13
IE14
IE15
IE16
IE17
IE110
IE111
IE112
IE113
IE114
IE115 2
A5
9
A5
11
A5
7
A5
8
A5
4
A5
5
A5
1
A5
3
A5
3
A6
2
A6
5
A6
4
A6 4
2F
B-L
ALT DI-274
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
430 Author
: Date
:
2001 AVALON (RM808U)
WIRING DIAGRAM

F09816
ABS & BA & TRAC
& VSC ECU
Engine RoomR/B No. 3
J/B No. 3
FL Block
FL MAIN7
A20
MR
2
A20 R+
27
A20
MT GR-L
ABS Motor Relay
W
B-L
Battery6
IE1
W-B
ABS GR-L
6
3AGR-R GR-R GR-R
3
3 3
31
23 4
Engine Room J/B 21
IF3
ALTABS No. 419
3H
ABS & BA & TRAC& VSC Actuator
6
A510
A5 L
L
OOEE
IF3
3 Engine Room R/B No. 5
12
215
5 5
5
B1
F61
F81
2G1
2H B DI-276
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
432 Author
: Date
:
2001 AVALON (RM808U)
DTC C0273 / 13 ABS Motor Relay Circuit
CIRCUIT DESCRIPTION
The ABS motor relay supplies power to the brake actuator pump motor. While the ABS & BA & TRAC & VSC
are activated, the ECU switches the motor relay ON and operates the brake actuator pump motor.
DTC No.DTC Detecting ConditionTrouble Area
C0273 / 13Open or short circuit is detected.
ABS motor relay

ABS motor relay circuit
WIRING DIAGRAM
DI6NZ-03