engine TOYOTA AVALON 2001 Service Repair Manual

DI6K7-01
D01054
ECM Terminals
E8 E7 E6
E5 E4 DI-174
- DIAGNOSTICSAUTOMATIC TRANSAXLE
330 Author
: Date
:
2001 AVALON (RM808U)
TERMINALS OF ECM
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
IG ON10 - 14
S1 (E4-7) e E1 (E5-17)
P e BR1st or 2nd gear10 - 14S1 (E4 7) e E1 (E5 17)

P e BR
3rd or O/D gearBelow 1
IG ONBelow 1
S2 (E6-1) e E1 (E5-17)G-Y e BR2nd or 3rd gear10 - 14S2 (E6 1) e E1 (E5 17)GY e BR
1st or O/D gearBelow 1
SL (E6 15)E1 (E5 17)GWBRIG ONBelow 1SL (E6-15) e E1 (E5-17)G-W e BRVehicle driving under lock-up position10 - 14
NC2+ (E4-24)eNC2-
(E4-23)R e GEngine is running (Except 2nd gear)Pulse signal is output
Below 1 e 4 - 5
SLN+
(E4-20) e SLN-
(E4-19)P-L e YIG ON10 - 14
OD1 (E7-24) e E1 (E5-17)GR e BRIG ON5 - 6
ODLP (E8 9)E1 (E5 17)GOBRExcept O/D gear10 - 14ODLP (E8-9) e E1 (E5-17)G-O e BRO/D gearBelow 1
L (E6 13)E1 (E5 17)YBRIG ON and Shift lever L position10 - 14L (E6-13) e E1 (E5-17)Y e BRIG ON and Shift lever other than L positionBelow 1
2 (E6 14)E1 (E5 17)GYBRIG ON and Shift lever 2 position10 - 142 (E6-14) e E1 (E5-17)G-Y e BRIG ON and Shift lever other than 2 positionBelow 1
R (E6 8)E1 (E5 17)RBBRIG ON and Shift lever R position10 - 14R (E6-8) e E1 (E5-17)R-B e BRIG ON and Shift lever other than R positionBelow 1
NSW (E7 20)E1 (E5 17)BWBRIG ON and Shift lever P or N position10 - 14NSW (E7-20) e E1 (E5-17)B-W e BRIG ON and Shift lever other than P or N positionBelow 1
ODMS (E6 12)E1 (E5 17)GOBRIG ON10 - 14ODMS (E6-12) e E1 (E5-17)G-O e BRIG ON and Press continuously O/D main switchBelow 1.5
IG ON and vehicle stationaryBelow 1.5
SPD (E7-22) e E1 (E5-17)V-W e BRIG ON and one front wheel is turned slowlyPulse signal is output
Below 1.5 e 4 - 5

I14524
RDRL No. 2 Relay
2
22
2 43
1
2R-B R-B8
B410Body ECU
DRL
6
EA1
8
IF1R
2
R-B2
2 1 2 HEAD RH-UPR
HEAD LH-UPR
12
L
10 9
IF1
L L 2 1
G 2
G
GGH2
Headlight High RH
1
2
R-W9
IC1
R-W
2
EA1
G2
22
2
2
2
2 2
21
42
3 DRL No. 4 Relay
DRL No. 3 Relay
12
53
4 W-R
W-R W-R
5W-B
W-B
10
R-L11
W-B W-B
2E 4
1
2E
MAIN
2
2GR-B
21
BatteryFL MAIN1
F6 F71 FL Block
B
to Body ECU5
5
5
5DRL
21
5
HEAD Relay
3
21 4
5
to Headlight
Low LH and RHEA R-L H1
Headlight High LH REngine Room R/B No. 2
Engine Room R/B No. 7R-BEA1
Engine Room R/B No. 2 IF1 EA1
EA1
IF3
EA1
Engine Room J/B
Engine Room R/B No. 5
B
R-B
RW-B R
R
9
EA1
R-W DI-668
- DIAGNOSTICSBODY CONTROL SYSTEM
824 Author
: Date
:
2001 AVALON (RM808U)
Daytime running light No.2, 3 and 4 relay circuit
WIRING DIAGRAM
DI6M3-01

I13647
Battery FL
MAINB1
1
F6
F7B 2
21 1MAIN
2E
2G R-BR5
55
5 21 34 Headlight Relay
R-BR-B4
1J8Body ECU
HRLY
5
55 1
21
2 HEAD
RH
LW RHEAD
LH
LW R
3
IF1
G-W
2
1
W-BG-W
*1Headlight
Low RHR-B
2
1H3
Headlight
Low LH
W-B
ED *1 EB: Canada
EA: Except Canada Engine Room J/B
FL Block
H4
Engine Room R/B No. 5
Engine Room R/B No. 5Driver Side J/B
- DIAGNOSTICSBODY CONTROL SYSTEM
DI-635
791 Author
: Date
:
2001 AVALON (RM808U)
Headlight relay circuit
CIRCUIT DESCRIPTION
Head light relay will be ºONº by operating the headlight switch. The transistor which activates the taillight
relay has two sorts: one activates directly by the headlight switch for fail safe and the other activates by CPU.
the one that activates by CPU has two systems and prevents the headlight from turning off at the time of
one system trouble in the automatic operation circuit.
WIRING DIAGRAM
DI6LN-01

I13640
2
Battery B
11
F7 F6FL Block
FL MAINB 2GHORNHORN RELAY
1
2
3 53
2C
2F3G-B1
1J
1110
1CBody ECU
HORN
G-B
6 G-W
1G-W
H5
Horn
LHH6Horn
RHC12Horn Switch
(in Combination
Switch)Driver Side J/B Engine Room J/B DI-672
- DIAGNOSTICSBODY CONTROL SYSTEM
828 Author
: Date
:
2001 AVALON (RM808U)
Horn circuit
CIRCUIT DESCRIPTION
The horn is connected to the body ECU and activated by the body ECU during warning of the theft deterrent
system.
WIRING DIAGRAM
DI6M4-01

I13641
P-LP-LP-LP-L
P-L
P-L
P-L 1
4F
4D
4C 11
7
1D 1J9 DOME
W-L
1
11 1
1
12C DCC
2
2G
B
F7 F6FL Block
FL MAINB
BatteryV11
Vanity Light RH
2
V10
Vanity Light RH
2W-B
W-B
2
3P9
Personal Light
ON
OFF
DOOR
I17
Interior Light
ON
OFF
DOOR
4
4D
R-B13
4F
R-BG-R
G-R3
1C5
ILL
10
1D2 GAUGE No. 1IG1 RELAY
11
4
3 4
1C 1B3 1GMulti Display
3
42
2 M7
M6M7
M6 Open Door
Driver Seat Belt
10
M7R
G-W
G-R25
B5
B5
B523
11AJAR
DBEW
PBEW
FL MAIN FL Block
ALT W
1
F101
F6
F81B
B-L
Battery
11
2H 2G W-B W-R
4
IG1 AM1 I15
Ignition Switch
2
W-L7
IF1
IG
AM1
21
55W-L
B2BLBody ECU
IG1 5
G-R
IG1
G-R 11 4C10
P-L
2
1
I14
Ignition
Key
Cylinder
LightG-R Engine Room J/B
Engine Room R/B No.5Engine Room J/B J/B No.4
Driver Side J/B
Passenger
Seat Belt
Driver Side J/B J/B No.4
Driver Side J/B
8W-B
1
G-R
IG1
DI-656
- DIAGNOSTICSBODY CONTROL SYSTEM
812 Author
: Date
:
2001 AVALON (RM808U)
WIRING DIAGRAM

I13659
P1
Park/Neutral
Position Switch
2PL7
G-W3
II2
G-W18 18
3A 3H
G-W1
B4Body ECU
R-L 20
3D
3C20 7
3C R-L D6
Diode
A/T Indicator Light
3 2
R-Y
*2
*1
R-L R-L
20
II1
11
1C
1B3 GAUGE No. 2
12
34 4IG1 RELAY
1C 1G
W
W-R
4Ignition Switch
IG1
AM1
2
W-LW-L 7
IF1 5 5AM1
21
BW-B
1
2H
2G1
B-L 1
F8 FL Block
1
F10
F61
BALT
FL MAINBattery
IGP
*1: FLOOR SHIFT
*2: COLUMN SHIFTJ/B No. 3
J/B No. 3
Driver Side J/B
J/B No. 5
Engine Room J/B
*2
I15 DI-664
- DIAGNOSTICSBODY CONTROL SYSTEM
820 Author
: Date
:
2001 AVALON (RM808U)
Park/Neutral Position Switch Circuit
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever p position and sends signals to the Body ECU.
WIRING DIAGRAM
DI6M1-01

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

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

I13655
W-B88
4F 4E
W-B1
2 D8
Wireless Door
Control Receiver
L-WL-W 9
IK221Body ECU
B4 RDA RDA
E
PRG
+B
P-L1
1
4D
4E
P-L5320
G-R G-R7
B4 PRG
B
BJ6
J/C
II7
1D
FL
MAIN DOME
9
1J
W-L
2
2G 2C1
B
1
1
F7 F6
BBattery J/B No. 4
J/B No. 4
IK2
Driver Side J/B
DCC Engine Room J/B
FL Block W-B
- DIAGNOSTICSBODY CONTROL SYSTEM
DI-651
807 Author
: Date
:
2001 AVALON (RM808U)
Wireless door lock tuner circuit
CIRCUIT DESCRIPTION
The signal from the transmitter will be input to the body ECU through RDA line. RDA line is diagnosed by
the Body ECU, so check DTC also in case of the failure of the wireless function.
WIRING DIAGRAM
DI6LV-01

DI6LH-01
I11666
Engine Room Junction Block

Headlight Control Relay
Light Control Switch
Luggage Compartment Door
Opener Switch
DLC3
Ignition Switch

Key Unlock Warning Switch
Instrument Panel Junction Block

Body ECU

DOME Fuse
- DIAGNOSTICSBODY CONTROL SYSTEM
DI-617
773 Author
: Date
:
2001 AVALON (RM808U)
PARTS LOCATION