TOYOTA AVALON 2001 Service Repair Manual

I13637
B2
2G Engine Room J/B
DOOR No. 2
12
2C 2CW-L
L-RW-G
1
F7
F61FL Block
ALT1
F10
F81W
B-L
1
1
2H 2G
B
B52 1AM1
5
7
IF1
W-L
R-G
3
ACC
AM1 2IG1
W-R
FL MAIN
Battery 41B514
3C 3D
W-G24
B4Body ECU
B
9
1B
1J
1J
1C
1G W-L
L-R
W
R-G1 105 9ECU-B
7
ECU-ACC
3
1 DOOR No. 1BDR2
ACC
BDR1
1IG1 RELAY
42
3ECU-IG No. 2
2
SIG
4
1C
W-B
W-BW-B
W-B BB
IF J4 J/C
11
B4
B5 14GND2
GND1 DCC
1
Engine Room J/B
Engine Room R/B No. 5J/B No. 3
Driver Side J/B
3
Ignition Switch
IG W-L DI-628
- DIAGNOSTICSBODY CONTROL SYSTEM
784 Author
: Date
:
2001 AVALON (RM808U)
WIRING DIAGRAM

- DIAGNOSTICSBODY CONTROL SYSTEM
DI-629
785 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check ECU-ACC, DOOR No. 1, DOOR No. 2, ECU-IG No. 2, ECU-B No. 1 and
ECU-B No. 2 fuse.
CHECK:
Check continuity of ECU-ACC, DOOR No. 1, DOOR No. 2, ECU-IG No. 2, ECU-B No. 1 and ECU-B No.
2 fuse.
OK:
Continuity
NG Replace the failure fuse.
OK
2 Check voltage between terminals ACC, B, BDR 1, BDR 2, SIG and GND or GND2
of Body ECU connector.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals ACC, SIG, BDR 1, and GND, GND2.
OK:
Voltage: 10 - 14V
PREPARATION:
(a) Turn ignition switch OFF.
(b) Disconnect the Body ECU connector.
CHECK:
Measure voltage between terminals B, BDR 2, BSUB and GND, GND2.
OK:
Voltage: 10 - 14V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI-622).
NG

DI-630
- DIAGNOSTICSBODY CONTROL SYSTEM
786 Author
: Date
:
2001 AVALON (RM808U)
3 Check wireharness and connector between Body ECU and body ground (See
page IN-30).
NG Repair or replace wireharness or connector.
OK
Check and repair wireharness and connector
between Body ECU and battery (See page
IN-30).

I13652
BatteryW-B
BM12
BB1
W-B
P151 22
5
Power WIndow
Motor RH
GP11
Power WIndow
Control Switch
Rear RH
D E
UB
DOWN
UP4
1
6L-W
R-BR-B R-B
G-B
G-BG-B 34
3 11 2 FL MAINB 1 1
F6 F10ALT W1G 1153
2
22
B5
B510RRD
RRU 12
1L PWR RELAY
P-B
6
IB2
P-B7
WLSWLG
D19
Driver
Door
ECU
1
1L RL P/W
10
1A BKJ11
J/C
A
W-B12
BA1
W-BP10
Power WIndow Control
Switch Rear LH
E
D
U R 212 P14
Power Window
Motor LHG
5DOWN
UP
B11
188
BA1
Y-R
Y-R
G-YG-Y
G-Y
PL-Y 4 6 3
3
2ID1
17
1B4
B422RLD
RLU
RBA1
ID1
BA1
IA1
RR P/W
FL Block
BB1
BB1
BB1IM2
IM2
IM2Body ECU
Driver Side J/BY-R
P
LG 3
- DIAGNOSTICSBODY CONTROL SYSTEM
DI-645
801 Author
: Date
:
2001 AVALON (RM808U)
Rear power window switch circuit
CIRCUIT DESCRIPTION
Power window switch circuit can be checked using DTC check. (Refer to DI-738)
WIRING DIAGRAM
DI6LS-01

DI-646
- DIAGNOSTICSBODY CONTROL SYSTEM
802 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check the power window switch. (See page BE-73)
NG Replace the power window switch.
OK
2 Check wireharness and connector between power window switch and Body
ECU. (See page IN-30)
NG Repair or replace wireharness or connector.
OK
3 Check wireharness and connector between power window switch and power
window master switch. (See page IN-30)
NG Repair or replace wireharness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table.
(See page DI-622)

I13638
Battery FL MAIN
B 1 1
ALT
F10 F6 W111 STOP
1G 1D
R2
S4
Stop Light Switch
1
G-W3
1D11
STOP Engine Room J/BBody ECU
Engine
Room J/B DI-662
- DIAGNOSTICSBODY CONTROL SYSTEM
818 Author
: Date
:
2001 AVALON (RM808U)
Stop light switch circuit
CIRCUIT DESCRIPTION
The Body ECU is detecting the condition of the stop light switch.
WIRING DIAGRAM
DI6M0-01

- DIAGNOSTICSBODY CONTROL SYSTEM
DI-663
819 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check stop light switch. (See page BE-36)
NG Replace the stop light switch.
OK
2 Check wireharness and connector between stop light switch and Body ECU, bat-
tery and stop light switch (See page IN-30).
NG Repair or replace wireharness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table
(See page DI-622).

I13646
FL Block
11
F6 F10
B
FL MAINALT
BatteryW1
1GTAIL RELAY
53
12
to Taillight9Body ECU
TRLY Driver Side J/B
- DIAGNOSTICSBODY CONTROL SYSTEM
DI-633
789 Author
: Date
:
2001 AVALON (RM808U)
Taillight relay circuit
CIRCUIT DESCRIPTION
Taillight relay will be ºONº by operating the taillight switch. The transistor which activates the tail light relay
has two sorts: one activates by the tail light switch for fail safe and the other activates by CPU.
WIRING DIAGRAM
DI6LM-01

DI-634
- DIAGNOSTICSBODY CONTROL SYSTEM
790 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check taillight relay (See page BE-19).
NG Replace the taillight relay.
OK
2 Check wireharness and connector between taillight relay and Body ECU, battery
and taillight relay (See page IN-30).
NG Repair or replace wireharness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table (See page
DI-622).

I13656
IJJ9
J/C AW-B1W6
Wireless Door
Lock Buzzer
Buzzer2
P-L20
B4Body ECU
BZ
- DIAGNOSTICSBODY CONTROL SYSTEM
DI-653
809 Author
: Date
:
2001 AVALON (RM808U)
Wireless door lock buzzer circuit
WIRING DIAGRAM
DI6LW-01