Page 1977 of 4323
I28589
Glass Breakage
Sensor ECU
G5 Glass Breakage
Sensor Microphone
(Shielded) G4 GBSI
MI+
MI±
GND
GBIG
GB+BMIC
GNDBody ECU
DOP B5
G4
G4
G4
G4
G4Sub J/B No. 4
Sub J/B No. 3 4C 4D
3B 3A
Instrument Panel J/B
F10
Fusible LBI18
Ignition SW
Engine Room J/BHTR
AM1 1E
1J
1L1C
1E
1C
ALT
2C 2DECU±BShort Pin
Battery
IG AM1 IG1J43
J/CA
A
81
45 812 4
2
6 3 4
1 W±R
W
BW±L
B W±RB±Y W±R
O 11
R±Y R±Y33O
18 4
6 3
5P
439
B
2 1
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1775
1969 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
Page 1978 of 4323
DI±1776
± DIAGNOSTICSBODY CONTROL SYSTEM
1970 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check voltage between terminals GBIG, GB+B and GND of glass breakage sen-
sor ECU.
PREPARATION:
Disconnect the glass breakage sensor ECU connector.
CHECK:
Measure the voltage between terminals GB+B and GND of the glass breakage sensor ECU.
OK:
Voltage: 10 to 14 V
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals GBIG and GND of the glass breakage sensor ECU.
OK:
Voltage: 10 to 14 V
NG Repair or replace wire harness or connector.
OK
2 Check wire harness and connector between glass breakage sensor ECU and
body ECU (See page IN±35).
NG Repair or replace harness or connector.
OK
3 Check wire harness and connector between glass breakage sensor ECU and
glass breakage sensor microphone (See page IN±35).
NG Repair or replace harness or connector.
OK
Page 1979 of 4323
I28726
G4
I28727
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1777
1971 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check glass breakage sensor ECU (microphone output).
PREPARATION:
(a) Reconnect the glass breakage sensor ECU, glass break-
age sensor microphone and body ECU connectors.
(b) Connect an oscilloscope to terminal G4±3 of the glass
breakage sensor ECU and body ground.
(c) Turn the ignition switch ON.
CHECK:
Check the signal waveform according to the condition(s) in the
table below.
ItemCondition
Tool setting12 V/DIV, 300 ms/DIV
Vehicle condition
Tap the glass breakage sensor micro-
phone with a hard object such as your
fingernail.
OK:
As shown in the illustration.
NG Replace glass breakage sensor microphone.
HINT:
If the problem recurs even after replacement, replace the glass
breakage sensor ECU.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1686).
Page 1980 of 4323
DIDEI±01
DI±1778
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1972 Author: Date:
2005 SEQUOIA (RM1146U)
DRIVER 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 1981 of 4323
DIDEK±01
I28584
From
Battery
From
Ignition Switch To Rear
Power Window
SW RH PWR No. 3
Power Main
Driver Door ECU
(Power Window Master Switch)To Rear
Power Window
SW LH PWR No. 4From
Battery From
Battery
ECU±IG
PWR No.1
ECU±B IG +BSIG
BDR
CPUB
CPU
Window
Lock
Switch WLSW
MPX1
GND
MPX2 Passenger
Door ECU
Body ECUDriver Door Power Window Motor
DOWN
UP
Pulse Sensor
Limit Switch DU
DDN
PLS
LMT
SGND
CTYB
Driver Side Door
Courtesy LightRemote Control Mirror LH
DM+R
DMHR
DMVRLEFT
RIGHT
DOWN UP
DVC
VSSR
HSSR
LE1 LSWD
KL
KUL
BEAN Door Unlock
Detection Switch
Door Key Lock and
Unlock Switch
LSWEDOWN
UPOUT
IN PCYLEngine Room J/B
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1779
1973 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM
Page 1982 of 4323
DI1P8±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±1781
P. DI±1788 ± DI±1813
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±1782
*: Confirm that there is no trouble by
DTC check.
DI±1780
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1974 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 1983 of 4323
DI1P9±06
DRIVER 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 Window Control System
Power Door Lock Control System
Theft Deterrent System
Other
Jam Protection System
Driver Side Door Courtesy Light System
Remote Control Mirror LH System
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1781
1975 Author: Date:
2005 SEQUOIA (RM1146U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1984 of 4323

DI1PC±06
DI±1782
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1976 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
POWER WINDOW CONTROL SYSTEM
SymptomSuspected AreaSee page
All the power windows do not operate.
4. Power source circuit
5. Window lock switch circuit
6. Body ECUDI±1788
DI±1805
IN±35
Power window does not operate.
1. Power source circuit
2. Power window motor circuit
3. Window lock switch circuit
4. Driver door ECUDI±1788
DI±1798
DI±1805
IN±35
Auto up (or down) function does not operate.1. Power source circuit
2. Driver door ECUDI±1788
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. Driver door ECUDI±1800
DI±1803
IN±35
OTHER
SymptomSuspected AreaSee page
Door parts do not function.1. Power source circuit
2. Driver door ECUDI±1788
IN±35
Door key related function does not operate.1. Door key lock and unlock switch circuit
2. Driver door ECUDI±1794
IN±35
Courtesy light does not come on.
(driver's)1. Door courtesy light circuit
2. Driver door ECUDI±1796
IN±35
Remote control mirror LH does not operate.
(w/ Driving position memory)1. Remote control mirror motor LH circuit
2. Remote control mirror position sensor LH circuit
3. Driver door ECUDI±1808
DI±1810
IN±35
Door lock control does not operate.
1. Door unlock detection switch circuit
2. Door lock motor circuit
3. Driver door ECUDI±1791
DI±1720
IN±35