2001 TOYOTA SEQUOIA ECU

± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1809
2003 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check remote control mirror motor (See page BE±115).
NG Replace remote control mirror motor.
OK
2 Check wire harness and connector between remote control mirror motor and
driver door ECU (See page IN±35).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
DI±1782).

DI±1810
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
2004 Author: Date:
2005 SEQUOIA (RM1146U)
Remote control mirror position sensor LH circuit (w/ Driving posi-
tion memory)
CIRCUIT DESCRIPTION
SEQUOIA features a driving position memory function, and up to 2 driver positions can be memorized.
The driver door ECU operates 2 motors built into the remote control mirror. The motors move the mirror to
the memorized positions based on information from the position sensor.
DIDEQ±01

I28456
R17
Remote Control Mirror LHD22
Driver Door ECU
VDD
SV
SHBR±W
BR±Y
L±BDVC
VSSR
HSSR
GNDL±R
LE1 9
16
10
1518 11
12 19
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1811
2005 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

DI±1812
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
2006 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check remote control mirror position sensor (See page DI±1783).
NG Replace remote control mirror.
OK
2 Check wire harness and connector between remote control mirror position sen-
sor and driver door ECU (See page IN±35).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
DI±1782).

± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1813
2007 Author: Date:
2005 SEQUOIA (RM1146U)
Power window master switch circuit
CIRCUIT DESCRIPTION
The power window master switch circuit can be checked using the DTC check (refer to DI±1904).
INSPECTION PROCEDURE
1 Check the power window master switch using hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
CHECK:
According to the display on the tester, read the DATA LIST.
D±DOOR:
ItemMeasurement Item/Dis-
play (Range)Normal ConditionDiagnostic Note
D P/W AUTO SWP/W auto SW signal/
ON or OFFON: P/W auto UP/DOWN SW is ON
OFF: P/W auto UP/DOWN SW is OFF±
P P/W AUTO SWP/W auto SW signal/
ON or OFFON: P/W auto UP/DOWN SW is ON
OFF: P/W auto UP/DOWN SW is OFF±
OK:
Indication on the tester switches between ON and OFF in accordance with the window auto up
operation status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1782).
NG
Replace the driver door ECU.
DI94N±04

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

DI1PP±07
Customer Problem Analysis
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not
occur
Circuit Inspection
Identification of Problem
Repair
Confirmation Test
EndTitles inside
are titles of pages in this
manual, with the page number indicated in
the bottom portion. See the indicated pages
for detailed explanations.
1
23
65
8P. IN±24
P. DI±1904 P. DI±1817
P. DI±1826 ± DI±1849
Symptom
occurs
Step 6, 8: Diagnostic steps permitting use of the
hand±held tester. 7
Multiplex Communication System Inspection * 4
Problem Symptoms Table
P. DI±1818
*: Confirm that there is no trouble by
DTC check.
DI±1816
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2010 Author: Date:
2005 SEQUOIA (RM1146U)
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
This ECU is connected to the multiplex communication system. Therefore, be sure to check that there is no
trouble in the multiplex communication system before performing the troubleshooting.

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