2001 TOYOTA SEQUOIA battery

DI1PQ±11
I28436
Instrument Panel J/B
BDR
CPUB
GND W±R
W±B
AW±R Engine Room J/B F10
Fusible Link BlockI18
Ignition SW
IF Battery BB 4 5ALT
8
W1L1AM1
121C6
17
1FW±L1 2 B±YIG1 AM1
1C4 ECU±IG
4
1F B±R AAJ/C
B±R
II27
B±R19
L±Y20
II23
L±Y
1
2D 2C8 SHORT PIN
ECU±B
Sub J/B No. 3
3D
3ASIG
PWR No. 2
Instrument Panel J/B
3
1J2
1E
11
II2
W±B J12
J/C12
8 6
II2 W±RFront Passenger Door ECU
W±R 11F18 J37
B±R
Sub J/B No. 3
3A 3C88J38 F18
F18 F18
F18 F18
F18 F1821
25
23
13 (*1) (*2)
(*1) (*2)
(*1) (*2)
(*1) (*2)
*1: w/ Driving Position Memory
*2: w/o Driving Position Memory DI±1826
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2020 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Power source circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the passenger door ECU.
WIRING DIAGRAM

DI±1828
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2022 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check wire harness and connector between passenger door ECU and battery
(See page IN±35).
NG Repair or replace wire harness or connector.
OK
4 Check wire harness and connector between passenger door ECU and body
ground (See page IN±35).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1782).

DID9F±01
DI±1850
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2044 Author: Date:
2005 SEQUOIA (RM1146U)
BACK DOOR CONTROL SYSTEM
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System NameSee Page
Back Door Power Window Control SystemBE±77

DID9G±01
I28586
From
Battery
From
Battery
From
Battery
From
DOME
FuseBack Door ECU
PWR No. 5
IG Switch
Luggage Room Light
BODY ECUECU±B
ECU±IG
Back Door Key Lock and Unlock Switch
Back Door Lock Assy
Back Door Unlock
Detection Switch
Back Door Courtesy
Light Switch
Back Door
Lock MotorDOOR
ONBRD
BECU
SIG
LGLP
ILE
BKUL
BKL
KEYE
LSWB
LSWE
BDCY
CTYE
ACT+
ACT±WIP+
WIP±
W
P
SGND
BDDN
BDUP
DSV
DS1
DS2
DSGBEAN
Driver Door
ECU
Rear Wiper Motor
Wiper
Motor
Reverse Position SW
String Position SW
Back Door Power Window Motor
Window
Motor
*1: Pulse Sensor*1*1 A/C ECU BEANBEAN
BEAN
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1851
2045 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM

DID9H±01
I18655
BACK DOOR ECU:
B11
B10
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1855
2049 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECU
Symbols (Terminal No.)Wiring ColorTerminal De-
scriptionConditionSpecified Condition
BDR e GND
(B11±4 e B11±3)L±W e W±BBatteryAlways10 to 14 V
BECU e GND
(B11±5 e B11±3)W±R e W±BBatteryAlways10 to 14 V
SIG e GND
(B11±6 e B11±3)B±R e W±BIgnition switchIgnition switch OFFBelow 1.0 V
SIG e GND
(B11±6 e B11±3)B±R e W±BIgnition switchIgnition switch ON10 to 14 V
LGLP e GND
(B11±7 e B11±3)R±L e W±BLuggage room
lightLuggage room light switch OFF or ONBelow 1.0 V
LGLP e GND
(B11±7 e B11±3)R±L e W±BLuggage room
lightLuggage room light switch DOOR, any door open10 to 14 V
BDCY e CTYE
(B10±7 e B10±20)R e W±BBack door cour-
tesy light switchBack door courtesy ON (Back door Open)Below 1.0 V
BDCY e CTYE
(B10±7 e B10±20)R e W±BBack door cour-
tesy light switchOFF (Back door Close)10 to 14 V
BKUL e KEYE
(B10±4 e B10±19)G e R±W
Back door key
lock and unlock
switch (UN-
LOCK)
Back door key lock and unlock switch UNLOCKBelow 1.0 V
BKUL e KEYE
(B10±4 e B10±19)G e R±W
Back door key
lock and unlock
switch (UN-
LOCK)
Back door key lock and unlock switch OFF or LOCK10 to 14 V
BKL e KEYE
(B10±5 e B10±19)L e R±W
Back door key
lock and unlock
switch (LOCK)
Back door key lock and unlock switch LOCKBelow 1.0 V
BKL e KEYE
(B10±5 e B10±19)L e R±W
Back door key
lock and unlock
switch (LOCK)
Back door key lock and unlock switch OFF or UNLOCK10 to 14 V
BDUP e BDDN
(B10±13 e B10±25)P e W
Back door pow-
er window motor
(UP)
Back door power window not operatingBelow 1.0 V

DI57I±08
I28430
SIG 6
15B11
1FECU±IG
W±L
BI18
Ignition SW
2
F10
Fusible Link Block1 4Back Door ECU
B±R B±R
B±R B±R J37
J/C
AA11
BD2 BF15
B±R
BDR
BECU
GND 1C4
B±YAM1 IG1
1L1
1C6
1G
12AM1
12
PWR No. 5
B48 5
L±W
L±W L±WL±W4
B11 10
BF1 BD13
2D1
2C8
1J3
1E2
W±R ECU±B SHORT PIN
W±R
3A1
3C2
W±R
10
BD2 BF115
B11
3
B11 W±R
W±RW±R
W±B W±B
W±B W±B
J19
J/CBD12
12
BF1J22
J/C
BB BJ BatteryALT
A Engine Room J/B
Instrument Panel J/B
Sub J/B No. 3 Instrument Panel J/B
W
W±R 11
IN1
2
IC4
12
IN1 B±R
3C 3A88Sub J/B No. 3
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1861
2055 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Power source circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the back door ECU.
WIRING DIAGRAM

± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1863
2057 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check wire harness and connector between back door ECU and battery
(See page IN±35).
NG Repair or replace wire harness or connector.
OK
4 Check wire harness and connector between back door ECU and body ground
(See page IN±35).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1854).

I28431
Back Door ECU
ILE B118
2 1
R±L S8
Step Light
LGLP
B117 BF18
BD29
W W
W
W
WR
R
R
R
R
R
R B
BAA 1G6
1G13
1G14
1E8
1J5
2C3
2D1SHORT PIN
DOME
4
5F10
FL Block
Battery3C
3A J21
J/C
BD211
2R±L BF13 L2
Luggage Room Light Instrument Panel J/B
Engine Room J/BInstrument Panel J/B
DOOR
ONOFF J29
J/C
MF
J29J30
6
16 Sub J/B No. 3
2
IN1
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1867
2061 Author: Date:
2005 SEQUOIA (RM1146U)
Luggage Room Light Circuit
CIRCUIT DESCRIPTION
When the luggage room light and the rear room light are turned to the DOOR position, and any door is
opened, voltage is applied to the LGLP terminal of the back door ECU, and voltage is output from the ILE
terminal.
WIRING DIAGRAM
DI57L±11