2001 TOYOTA SEQUOIA wiring diagram

I18739
2
1
BUZZERLG7
IA1
EDBody ECU
W1
Wireless Door
Lock Buzzer
BZR LG
B715
W±B
A
J28
J/C
A
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1741
1935 Author: Date:
2005 SEQUOIA (RM1146U)
Wireless door lock buzzer circuit
CIRCUIT DESCRIPTION
The body ECU receives a door OPEN/CLOSE demand signal from the wireless transmitter via the wireless
door lock receiver. The ECU then sounds the wireless door lock buzzer as an answer back.
WIRING DIAGRAM
DI6LW±13

I24358
Body ECU
P2
Parking
Brake SWPKB
14
B53
4
LG±R LG±RSub J/B No. 4
4D 4C DI±1744
± DIAGNOSTICSBODY CONTROL SYSTEM
1938 Author: Date:
2005 SEQUOIA (RM1146U)
Parking brake switch circuit
CIRCUIT DESCRIPTION
The body ECU determines if the parking brake switch is ON or OFF and sends the parking brake switch ON/
OFF signal to the combination meter via BEAN.
WIRING DIAGRAM
DI29Y±18

I28519
W±B
BA1
P8
Power Window
Motor Rear LHP3
Power Window Control
Switch Rear LH
G±R
B7
B7RLU
RLD BA1
B5
B5 BC1
BC1G±R G±R
G±Y
G±Y G±Y
RRU
RRD L
W±BUP
BH DWNLL
BK W±B D U E25
13
BA1 BC1
13 W±BD UE
UP
DWN
P4
Power Window Control
Switch Rear RH
P9
Power Window
Motor Rear RHLL
L26 1
4
119
20
4 6
1 2
G 2
15 R
2
G 2 13
16
3Body ECU
J/C
B
J CI
J30 J29
J/C
D
J45 J44K
EL
J45J44 J30
J29
5 RB
B4
4From PWR No. 4 Fuse
From PWR No. 3 Fuse
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1747
1941 Author: Date:
2005 SEQUOIA (RM1146U)
Rear power window switch circuit
CIRCUIT DESCRIPTION
The rear power window switch controls the UP/DOWN function of the rear power window motor.
The driver door ECU (power window master switch) operates the remote control of each window UP/DOWN
function via BEAN.
WIRING DIAGRAM
DI6LS±11

I18747
Body ECU
Instrument Panel J/BHEAD
TAIL
A G±Y
G
L±R (*1)B6
137 9
H
TELA
OFF
TAIL
HEAD
AUTO Light
Control
Switch
16
W±B
1B7 9
1F J8
J/C
W±B
A
IE10
14 12
(*1): w/ Automatic Light ControlB6
B6
C8
Combination Switch DI±1750
± DIAGNOSTICSBODY CONTROL SYSTEM
1944 Author: Date:
2005 SEQUOIA (RM1146U)
Light control switch circuit
CIRCUIT DESCRIPTION
The body ECU detects the light control switch position and drives the DRL No. 4 and HEAD relays.
If the vehicle is equipped with an automatic light control system, the light control switch includes the AUTO
position.
The body ECU turns the headlights ON and OFF based on the ambient light level outside the vehicle, which
is detected by the automatic light control sensor.
WIRING DIAGRAM
DI1OL±27

I03114
A27
Automatic Light
Control Sensor
CLTS Y
R±G
BRCLTB
CLTEBody ECU
12
B6 4
1
34
B6
3
B6 CLTS
CLTB
CLTE
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1753
1947 Author: Date:
2005 SEQUOIA (RM1146U)
Automatic light control sensor circuit
CIRCUIT DESCRIPTION
The body ECU detects the ambient light level outside the vehicle via the automatic light control sensor.
The body ECU turns the headlights ON and OFF based on the ambient light level sensed by the automatic
light control sensor.
WIRING DIAGRAM
DI1OL±28

I28521
1B
1B1
2
7
1B 1F9Y±R
B6
B6 11
8
R±L Instrument Panel J/B
Y±R
W±BHF HU
J8
J/C A
IE16 LOW
HIGH
FLASH Headlight
Dimmer
Switch
W±BC8 Combination Switch
EL HF HU87Body ECU w/ Daytime Running Light:
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1755
1949 Author: Date:
2005 SEQUOIA (RM1146U)
Headlight dimmer switch circuit
CIRCUIT DESCRIPTION
This circuit detects the headlight dimmer switch condition.
w/ daytime running light:
The body ECU detects the headlight dimmer switch position and turns on the DIMMER relay.
The body ECU informs the combination meter of the headlight dimmer switch condition via BEAN.
When the headlight dimmer switch position is HI or FLASH, the HI beam indicator light on the combination
meter comes on.
w/o daytime running light:
When the headlight dimmer switch position is HI or FLASH, the HI beam indicator light on the combination
meter comes on.
When the HI beam headlights come on, current is supplied to the HI beam indicator light on the combination
meter to turn the indicator light on.
WIRING DIAGRAM
DI94U±08

I28523
Back Door ECU
Sub J/B No. 3 ILE
B118
BF18
BD29
WWWW
J30J/C
J29 FMInstrument Panel J/BBody ECU
1G6
1G5
1M10
1E3
1G13
1G14
1E81M6
1J5ILE B73
1F 10
1M7W
3C
3A3A
3D6 6
16 6I17
Ignition Key
Cylinder Light
12W
R
R6R
J48R
J/C
J49
BC1 LF R
D13 Door Courtesy
Light Rear RH
12
D17 Door Courtesy
Light Switch Rear RH2 1
W±B
BA161
2
2
IN1R
A AJ21
J/C R
R 1B±O
2 1 D8 Diode
(Interior Light No. 1)BC17
R±YR±YW±B RW±B W±BRRRW (*1)
W (*2)
W
R
12 S8 Step Light
V7 Vanity Light RH
V6 Vanity Light LH
R11 Rear Interior Light
(*4) (*3) To Dome Fuse
W±B
W±B
W
G±R(*2)
(*2)
(*2) 1
2
4
de f g bc aR
(*2)
3ON
DoorOFF R
R DI±1760
± DIAGNOSTICSBODY CONTROL SYSTEM
1954 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
(*1): w/o Sliding Roof, RSE and RSA
(*2): w/ Sliding Roof, RSE or RSA
(*3): w/ Sliding Roof w/ RSE or RSA
(*4): w/ Sliding Roof w/o RSE and RSA

I24147
B7
HORN HORN Relay
2
1Body ECU
1
2D18
HR
HORN
B5 B±Y
6 C9
Horn SW
B54 F10
FL Block H8
Horn (low)
1
1 B B8
2H
7
2F5
3W±R W±R19
IA1
26
Battery H7
Horn (high)Engine Room J/B
B DI±1764
± DIAGNOSTICSBODY CONTROL SYSTEM
1958 Author: Date:
2005 SEQUOIA (RM1146U)
Horn circuit
CIRCUIT DESCRIPTION
The vehicle horn sounds when the horn switch is pressed. It also sounds as an alarm for the theft deterrent
system when the body ECU detects any alert condition.
WIRING DIAGRAM
DI94T±08