2001 TOYOTA SEQUOIA key

± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1795
1989 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check the door key lock and unlock switch (See page BE±79).
NG Replace the door key lock and unlock switch.
OK
2 Check wire harness and connector between door key lock and unlock switch
and driver door ECU (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±1686).

DIDES±01
I28585
Power Main From
BatteryTo Rear
Power Window
SW RH PWR No. 3
To Rear
Power Window
SW LH PWR No. 4
Passenger Door ECU
(Power Window Switch Assembly)
Driver Door ECU
Back Door ECU
Front Passenger
Courtesy Light
BEAN Door Unlock
Detection Switch
Door Key Lock and
Unlock SwitchLSW
MPX2
GND
MPX1
CTYB
LSWP
PKL
PKULPCYLFrom
Battery
From
Ignition SWFrom
Battery
ECU±IG
PWR
ECU±B
Passenger Door Power Window Motor
DOWN
UP
Pulse Sensor
Limit Switch
Remote Control Mirror RH
LEFT
RIGHT
DOWN UP
DOWN
UPOUT
IN SIG
BDR
CPUB
PU
PDN
PLS
LMT
SGND
PM+R
PMHR
PMVR
PVC
VSSR
HSSR
RE1Instrument
Panel J/B
LSWE
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1815
2009 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM

DI1PV±06
DI±1818
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2012 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
POWER WINDOW CONTROL SYSTEM
SymptomSuspected AreaSee page
Power window does not operate.
1. Power source circuit
2. Power window motor circuit
3. Window lock switch circuit
4. Passenger door ECUDI±1826
DI±1836
DI±1843
IN±35
Auto up (or down) function does not operate.1. Power source circuit
2. Passenger door ECUDI±1826
IN±35
Jam protection function and auto up (or down) function do not
operate.1. Jam protection limit switch circuit
2. Jam protection pulse sensor circuit
3. Passenger door ECUDI±1838
DI±1841
IN±35
OTHER
SymptomSuspected AreaSee page
Door parts do not function.1. Power source circuit
2. Passenger door ECUDI±1826
IN±35
Door key related function does not operate.1. Door key lock and unlock switch circuit
2. Passenger door ECUDI±1832
IN±35
Courtesy light does not come on.
(Passenger's)1. Door courtesy light circuit
2. Passenger door ECUDI±1834
IN±35
Remote control mirror RH does not operate.
(w/ Driving position memory)1. Remote control mirror motor RH circuit
2. Remote control mirror position sensor RH circuit
3. Passenger door ECUDI±1845
DI±1847
IN±35
Door lock control does not operate.
1. Door unlock detection switch circuit
2. Door lock motor circuit
3. Passenger door ECUDI±1829
DI±1720
IN±35

I18633
F18PASSENGER DOOR ECU
(w/ Driving Position Memory): DI±1820
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2014 Author: Date:
2005 SEQUOIA (RM1146U) PKL e LSWE
(3 e 13)
LG±B e W±B
Door key lock
and unlock
switch (LOCK)
Door key lock and unlock switch LOCKBelow 1 V
PKL e LSWE
(3 e 13)LG±B e W±B
Door key lock
and unlock
switch (LOCK)
Door key lock and unlock switch OFF or UNLOCK10 to 14 V
PKUL e LSWE
(2 e 13)LG±R e W±B
Door key lock
and unlock
switch (UN-
LOCK)
Door key lock and unlock switch UNLOCKBelow 1 V
PKUL e LSWE
(2 e 13)LG±R e W±B
Door key lock
and unlock
switch (UN-
LOCK)
Door key lock and unlock switch OFF or LOCK10 to 14 V
LSWP e LSWE
(4 e 13)R±Y e W±BDoor unlock
detection switchFront passenger's door is locked10 to 14 V
LSWP e LSWE
(4 e 13)R±Y e W±BDoor unlock
detection switchFront passenger's door is unlockedBelow 1 V
LSW e GND
(7 e 8)R±L e W±BWindow lock
switchWindow lock switch position UNLOCKBelow 1 V
LSW e GND
(7 e 8)R±L e W±BWindow lock
switchWindow lock switch position LOCK10 to 14 V
CTYB e PCYL
(6 e 5)R e R±WDoor courtesy
light (Front RH)Front passenger's door closed10 to 14 V
CTYB e PCYL
(6 e 5)R e R±WDoor courtesy
light (Front RH)Front passenger's door openBelow 1 V
LSWE e Body ground
(13 e Body ground)W±B e Body
groundGroundAlwaysBelow 1 V
SGND e Body ground
(18 e Body ground)W±B e Body
groundGroundAlwaysBelow 1 V
Symbols (Terminal No.)Wiring ColorTerminal De-
scriptionConditionSpecified Condition
MPX1 e ±
(20 e ±)B e ±Multiplex com-
munication lineMultiplex communication circuitPulse generation
SIG e GND
(21 e 13)B±R e W±BIgnition switchIgnition switch ON10 to 14 V

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1821
2015 Author: Date:
2005 SEQUOIA (RM1146U) BDR e GND
(25 e 13)
L±Y e W±BBatteryAlways10 to 14 V
CPUB e GND
(23 e 13)W±R e W±BBatteryAlways10 to 14 V
LMT e SGND
(2 e 4)L±W e W±BPower window
limit switchFront passenger's door window not fully closedBelow 1 V
LMT e SGND
(2 e 4)L±W e W±BPower window
limit switchFront passenger's door window fully closed10 to 14 V
PLS e SGND
(3 e 4)L±R e W±BPower window
pulse sensorPower window is operatedPulse generation
SGND e Body ground
(4 e Body ground)W±B e Body
groundGroundAlwaysBelow 1 V
PU e PDN
(1 e 14)R e GPower window
motor (UP)Ignition switch ON and front passenger's window switch
OFFBelow 1 V
PU e PDN
(1 e 14)R e GPower window
motor (UP)Ignition switch ON and front passenger's window switch
UP10 to 14 V
PDN e PU
(14 e 1)G e RPower window
motor (DOWN)Ignition switch ON and front passenger's window switch
OFFBelow 1 V
PDN e PU
(14 e 1)G e RPower window
motor (DOWN)Ignition switch ON and front passenger's window switch
DOWN10 to 14 V
LSW e GND
(7 e 13)R±L e W±BWindow lock
switchWindow lock switch position UNLOCKBelow 1 V
LSW e GND
(7 e 13)R±L e W±BWindow lock
switchWindow lock switch position LOCK10 to 14 V
MPX2 e ±
(8 e ±)G±B e ±Multiplex com-
munication lineMultiplex communication circuitPulse generation
GND e Body ground
(13 e Body ground)W±B e Body
groundGroundAlwaysBelow 1 V
LSWP e LSWE
(24 e 9)R±Y e W±BDoor unlock
detection switchFront passenger's door is locked10 to 14 V
LSWP e LSWE
(24 e 9)R±Y e W±BDoor unlock
detection switchFront passenger's door is unlockedBelow 1 V
LSWE e Body ground
(9 e Body ground)W±B e Body
groundGroundAlwaysBelow 1 V
PKUL e GND
(10 e 13)LG±R e W±B
Door key lock
and unlock
switch (UN-
LOCK)
Door key lock and unlock switch UNLOCKBelow 1 V
PKUL e GND
(10 e 13)LG±R e W±B
Door key lock
and unlock
switch (UN-
LOCK)
Door key lock and unlock switch OFF or LOCK10 to 14 V
PKL e GND
(22 e 13)LG±B e W±B
Door key lock
and unlock
switch (LOCK)
Door key lock and unlock switch LOCKBelow 1 V
PKL e GND
(22 e 13)LG±B e W±B
Door key lock
and unlock
switch (LOCK)
Door key lock and unlock switch OFF or UNLOCK10 to 14 V
CTYB e PCYL
(5 e 6)R e R±WDoor courtesy
light (Front RH)Front passenger's door closed10 to 14 V

DI1PS±08
I28391
Power Window Motor

Pulse Sensor

Limit Switch
Door Courtesy Light Switch Power Window Switch Assembly

Passenger Door ECU

Door Lock Control Switch

Power Window Switch
Door Courtesy Light
Passenger door ECU is the same with Power Window Switch
Door Lock Assembly

Door Lock Motor

Door Unlock Detection
Switch Remote Control Mirror
(w/ Driving Position Memory)
Door Key Lock and
Unlock Switch
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1825
2019 Author: Date:
2005 SEQUOIA (RM1146U)
PARTS LOCATION

I28437
D21
Door Unlock Detection
SW Front RH
3 R±Y4
LSWP
LSWE W±B 4Front Passenger
Door ECU
13 24
9 F18 F18
F18 F18
*1: w/ Driving Position Memory
*2: w/o Driving Position Memory(*1) (*2)
(*1) (*2)
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1829
2023 Author: Date:
2005 SEQUOIA (RM1146U)
Door unlock detection switch circuit
CIRCUIT DESCRIPTION
The door unlock detection switch is built in the door lock motor. This switch is ON when the door lock knob
is in the unlock position and OFF when the lock knob is in the lock position. The ECU detects the door lock
knob conditions in this circuit. It is used as one of the operating conditions for the key confinement prevention
function.
WIRING DIAGRAM
DI1Q8±09

I28438
D21
Door Key Lock and
Unlock SW Front RH
LSWE
PKUL
PKL 13
2
3 W±B
LG±R
LG±B 4
1
2Front Passenger
Door ECU
F18 F18
*1: w/ Driving Position Memory
*2: w/o Driving Position Memory(*1) (*2)
F18 F18
F18 F189
10
22 (*1) (*2)
(*1) (*2) DI±1832
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2026 Author: Date:
2005 SEQUOIA (RM1146U)
Door key lock and unlock switch circuit
CIRCUIT DESCRIPTION
The door key lock and unlock switch is built in the door lock motor. When the key is turned to the lock side,
terminal 2 of the switch is grounded and when the key is turned to the unlock side, terminal 1 of the switch
is grounded.
The door key lock and unlock switch can be checked using the DTC check (refer to DI±1904).
WIRING DIAGRAM
DI1Q9±09