Page 2049 of 4323
I28445
R18
Remote Control Mirror RHFront Passenger
Door ECU
VDD
SV
SH
GNDPVC
VSSR
HSSR
RE1 9
16
10
1511
18 F18
19
12 GR±B
GR±G
GR±L
GR±RF18
F18
F18
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1847
2041 Author: Date:
2005 SEQUOIA (RM1146U)
Remote control mirror position sensor RH 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 passenger 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.
WIRING DIAGRAM
DIDEW±01
Page 2050 of 4323
DI±1848
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2042 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check remote control mirror position sensor (See page DI±1819).
NG Replace outer 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±1818).
Page 2051 of 4323
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1849
2043 Author: Date:
2005 SEQUOIA (RM1146U)
Power window switch circuit
CIRCUIT DESCRIPTION
The power window switch circuit can be checked using the DTC check (refer to DI±1904).
INSPECTION PROCEDURE
1 Check the power window 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.
P±DOOR:
ItemMeasurement Item/Dis-
play (Range)Normal conditionDiagnostic Note
P P/W AUTO SW
Front passenger power
window auto SW signal/
ON or OFFON: Front passenger power window auto UP/DOWN SW
is ON
OFF: Front door power window 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±1818).
NG
Replace the passenger door ECU.
DI94M±05
Page 2052 of 4323
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
Page 2053 of 4323
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
Page 2054 of 4323
DI57D±06
Customer Problem Analysis
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not
occur
Circuit Inspection
Identification of Problem
Repair or replace
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
5
8P. IN±24 P. DI±1853
P. DI±1861 ± DI±1885
Symptom
occurs
Step 4, 6, 8: Diagnostic steps permitting use of the hand±held tester. 7
Problem Symptoms Table
P. DI±1854
P. DI±1904
Multiplex communication system inspection * 4*: Confirm that there is no trouble by
DTC check.
6 DI±1852
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2046 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.
Page 2055 of 4323
DI57E±04
BACK DOOR CONTROL SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date VehicleVIN
Licence Plate No.
Production Date
Odometer Reading / /km
mile
Weather Conditions
When Problem
Occurred
Date Problem First Occurred
Frequency Problem Occurs
Weather
/ /
Once only Brought in
Malfunction
System
Outdoor Temperature
Fine Cloudy Rainy Snowy
Various/Others
Hot Warm Cool
Cold (Approx. °F ( °C))
Constant Sometimes ( times per day, month)
Power Door Lock Control System
Theft Deterrent System
Rear Wiper and Washer System
Back Door Power Window System
Luggage Room Light
Jam Protection System
Other
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1853
2047 Author: Date:
2005 SEQUOIA (RM1146U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 2056 of 4323

DI57H±07
DI±1854
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2048 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
REAR WIPER AND WASHER
SymptomSuspected AreaSee page
Rear wiper does not operate.
1. Wiper switch circuit
2. Rear wiper motor circuit
3. Rear wiper limit switch circuit
4. Back door power window pulse sensor circuit
5. Body ECU
6. Back door ECUDI±1704
DI±1880
DI±1885
DI±1877
IN±35
IN±35
Rear washer does not operate.1. Washer switch and washer motor circuit
2. Body ECUDI±1704
IN±35
Wiper does not operate when washer switch is ON.1. Wiper switch and washer motor circuit
2. Body ECUDI±1704
IN±35
OTHERS
SymptomSuspected AreaSee page
Back door power window does not operate.
1. Back door power window switch circuit
2. Back door power window pulse sensor circuit
3. Back door power window motor circuit
4. Body ECU
5. Back door ECUDI±1718
DI±1877
DI±1874
IN±35
IN±35
Back door lock does not operate.
1. Back door key lock and unlock switch circuit
2. Back door lock motor circuit
3. Back door unlock detection switch circuit
4. Back door courtesy light switch circuit
5. Back door key lock and unlock switch circuit
6. Back door ECUDI±1882
DI±1872
DI±1869
DI±1864
DI±1882
IN±35
Luggage room light does not come on.
1. Luggage room light circuit
2. Back door courtesy light switch circuit
3. Body door ECUDI±1867
DI±1864
IN±35
Whole functions of the back door control system do not operate.1. Power source circuit
2. Back door ECUDI±1861
IN±35