Page 1897 of 4323

± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1695
1889 Author: Date:
2005 SEQUOIA (RM1146U)MIRR POS SW L
Remote control mirror switch L
position/ON or OFF
ON: Remote control mirror switch
L position is selected
OFF: Remote control mirror switch
L position is not selected
±
MIRR POS SW UPRemote control mirror switch UP
position/ON or OFF
ON: Remote control mirror switch
UP position is selected
OFF: Remote control mirror switch
UP position is not selected
±
MIRR POS SW DWNRemote control mirror switch
DOWN position/ON or OFF
ON: Remote control mirror switch
DOWN position is selected
OFF: Remote control mirror switch
DOWN position is not selected
±
AUTO LIGHT SWLight control switch (AUTO)/ON or
OFF
ON: Light control switch position is
AUTO
OFF: Light control switch position
is not AUTO
±
HEAD LIGHT SWLight control switch (HEAD)/ON or
OFF
ON: Light control switch position is
HEAD
OFF: Light control switch position
is not HEAD
±
TAIL LIGHT SWLight control switch (TAIL)/ON or
OFF
ON: Light control switch position is
TAIL
OFF: Light control switch position
is not TAIL
±
ILLUMINATE RATEIllumination rate information/
MIN: 0 MAX: 99.99Condition value will be displayed
Normal value: 0.8 ms to 22.0 ms±
SEAT M1 SWMemory seat switch (M1)/ON or
OFF
ON: Memory seat switch position
is M1
OFF: Memory seat switch position
is not M1
±
SEAT M2 SWMemory seat switch (M2)/ON or
OFF
ON: Memory seat switch position
is M2
OFF: Memory seat switch position
is not M2
±
SEAT SET SWMemory seat switch (SET)/ON or
OFF
ON: Memory seat switch position
is SET
OFF: Memory seat switch position
is not SET
±
GLS BRK DETECTGlass breakage sensor/ON or
OFF
ON: Glass breakage sensor oper-
ates
OFF: Glass breakage sensor does
not operate
±
WIRELESS OPERWireless door lock control func-
tion/ON or OFF
ON: Wireless door lock function
operated
OFF: Wireless door lock function
not operated
±
OPEN DOOR WARNDOOR indicator light/ON or OFFON: Any door is open
OFF: All doors are closed±
AUTO LOCK DELAYAuto lock delay/60s or 30sCustomized value will be dis-
played±
UNLOCK/2OPER2 time operation wireless unlock
signal/ON or OFFCustomized condition will be dis-
played±
Page 1898 of 4323

DI±1696
± DIAGNOSTICSBODY CONTROL SYSTEM
1890 Author: Date:
2005 SEQUOIA (RM1146U)INT/LGT ON/UNLK
ON or OFF
ON: Dome light comes on when
the doors are unlocked by the
wireless transmitter
OFF: Dome light does not come
on when the doors are unlocked
by the wireless transmitter
±
ALARM FUNCTIONPanic function signal/ON or OFFON: Panic function operated
OFF: Panic function not operated±
AUTO LOCKVehicle speed linked door lock/ON
or OFFCustomized condition will be dis-
played±
UNLK/KEY TWICEON or OFF
ON: Pressing the ºUNLOCKº
switch twice unlocks the driver
side door
OFF: Pressing the ºUNLOCKº
switch twice does not unlock the
driver side door
±
ALL UNLK/OPN±CL
Ignition switch OFF, shift lever P
position, driver courtesy lamp
switch ON signal/ON or OFFON: All doors unlock when open-
ing driver door within 10 seconds
after turning ignition switch OFF
OFF: Doors are not unlocked
±
UNLOCK/PARK
Ignition switch OFF, shift lever P
position, vehicle speed 0 km/h /
ON or OFF
ON: All doors unlock when shift
lever is moved to P from any posi-
tion other than P while ignition
switch is ON.
OFF: No door unlocks even when
shift lever is moved to P from any
position other than P while ignition
switch is ON
±
WARNING TIMEWarning time/5S, 15S, 27.5S or
60SCustomized value will be dis-
played±
PASSIVE MODEPassive mode information/ON or
OFFCustomized condition will be dis-
played±
WARN BY GLS SENON or OFF
ON: Warns when glass breakage
is detected
OFF:Does not warn when glass
breakage is detected
±
ENTRY DELAYIlluminated entry delay/0S, 14S or
30SCustomized value will be dis-
played±
AUTO LOCK/SHIFTON or OFF
ON: Auto lock function can be set
by the shift lever
OFF: Auto lock function cannot be
set by the shift lever
±
I/L ON/UNLOCKRoom light signal/ON or OFFON: Room light is on
OFF: Room light is off±
LIGHTING TIMELighting time/7.5S, 15S or 30SCustomized value will be dis-
played±
SENSITIVITY
Turn on luminous intensity/
DARK2, DARK1, NORMAL,
LIGHT1 or LIGHT2Customized condition will be dis-
played±
LIGHT OFF DELAYLight auto off delay/OFF, 30S, 60S
or 90SCustomized condition will be dis-
played±
Page 1899 of 4323

± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1697
1891 Author: Date:
2005 SEQUOIA (RM1146U)DISP EX ON SEN
Display extinction luminous inten-
sity/NORMAL, DARK2, DARK1,
LIGHT1 or LIGHT2Customized condition will be dis-
played±
DISP EX OFF SEN
Display extinction release lumi-
nous intensity/NORMAL, DARK2,
DARK1, LIGHT1 or LIGHT2Customized condition will be dis-
played±
2. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relays, actuators and so on to operate
without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one of the methods
to shorten labor time.
It is possible to display the DATE LIST during the ACTIVE TEST.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) According to the display on the tester, perform the ºACTIVE TESTº.
BODY ECU:
ItemTest DetailsDiagnostic Note
SECURITY INDICTurn security indicator light ON/OFF±
SECURITY HORNTurn theft horn ON/OFFThis test is available only for vehicles equipped
with security horn.
BUZZ CONT SOUNDWireless buzzer continuous sound ON/OFF±
BUZZ RESP SOUNDTurn wireless buzzer ON/OFFTurn volume to MAX if it is a wireless buzzer
equipped vehicle.
HEAD LIGHTHeadlight relay ON/OFF±
TAIL LIGHTTaillight ON/OFF±
ILLUMI OUTPUTIlluminated entry system ON/OFFIG is ON, E/G is stopped and light control SW is
OFF.
ALL COURTESYDOOR indicator light ON/OFF±
VEHICLE HORNTurn vehicle horn ON/OFF±
RL P/W UP/DOWNRear left passenger power window DOWN/UPCaution: This test causes vehicle parts to move.
Watch your hands and feet.
RR P/W UP/DOWNRear right passenger power window DOWN/UPCaution: This test causes vehicle parts to move.
Watch your hands and feet.
DOOR LOCKDoor lock LOCK/UNLOCKAll doors are closed.
Page 1900 of 4323

DI94R±07
I28393
Hood Courtesy Switch Engine Room J/B
ECU±B Fuse
Door No. 2 Fuse
H±LP RH Fuse (*2)
H±LP LH Fuse (*2)
DRL Fuse (*1)
Rear Washer Motor
Horn
Headlight
Rear washer switch
Ignition Switch
Key Unlock Switch
DLC3 Body ECU
Instrument Panel J/B
ECU±IG Fuse
RAD No. 2 Fuse
FOG Fuse
FOG LIGHT Relay
POWER MAIN Relay
WSH Fuse
STOP Fuse
TAILLIGHT Relay Back Door Power
Window SwitchTheft Horn
Engine Room R/B
No.2
DIMMER Relay
DRL No. 4 Relay
H±LP RH Fuse (*1)
H±LP LH Fuse (*1)
H±LP RL Fuse (*1)
H±LP LL Fuse (*1)
Fog Light
Wireless Door
Control Receiver Wireless Door Lock Buzzer
Combination Meter Memory Seat Switch
(*1): w/ Daytime Running Light
(*2): w/o Daytime Running Light (Located behind
the instrument panel)
(Located behind
the heater control panel)
DOME Fuse
HEAD Relay
HORN Relay
DOME Fuse
Automatic Light Control Sensor
Stop Light Switch
Remote Control Mirror SwitchGlass Breakage
Sensor Microphone Glass Breakage
Sensor ECU
Combination Switch
Light Control Switch
Headlight Dimmer Switch
Fog Light Switch DI±1698
± DIAGNOSTICSBODY CONTROL SYSTEM
1892 Author: Date:
2005 SEQUOIA (RM1146U)
PARTS LOCATION
Page 1901 of 4323
I28394
Parking Brake Switch
Door Lock Motor
Rear Power
Window Motor Courtesy Light
Switch
Courtesy LightRear Courtesy Light Switch Horn Switch
Stop Light Rear Room Light Front Map Light
Courtesy Light Rear Courtesy
Light Switch Door Lock Motor
Rear Power
Window MotorRear Window Control
Switch RH Door Lock Motor
Power Window Switch
Passenger Door ECU
Door Lock Control Switch
Power Window Switch
Stop Light
Power Window
Master Switch
Driver
Door ECU
Door Lock
Control Switch
Power
Window Switch
Window Lock
Switch
Door Lock Motor
Rear Window
Control Switch LH
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1699
1893 Author: Date:
2005 SEQUOIA (RM1146U)
Page 1902 of 4323
DI94S±08
DI±1700
± DIAGNOSTICSBODY CONTROL SYSTEM
1894 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Power source circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the body ECU.
BDR terminal: Power source for door lock motor
S+B terminal: Power source for security horn
ACC terminal: Power source for accessory
BECU terminal: Power source for backing up body ECU
IG terminal: Power source for starting body ECU
WIG terminal: Power source for washer motor
Page 1903 of 4323
I28515
Engine Room J/B
Body ECU
Instrument Panel J/B SECURITY
I18
Ignition SWBDR
ACC
BECU S+B B6 L±W
IA5 2D
2C2H
1C 1E
1G
1L
1G
1G1C 1C 1J12
3
45
6 7
10
11
5
6 2
58 1101332
1
6L±W
IA510
B6
B7
B6 1
2 1
8
12DOOR No. 2
ECU±BShort
Pin
2W±L
W±L
W±R
B B
WGR
W±R
P RAD No. 2
AM1
WSH
ECU±IG12AM1
ACC
B7 IG1 W±L
ALT R/B
F10
FL Block
BatteryL±YB±RB±Y
B
W±BB7
B6
IE 12
IG
WIG
GND1 1W±R 12
3A 3ESub J/B No. 3
4Engine Room R/B No. 2
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1701
1895 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
Page 1904 of 4323
DI±1702
± DIAGNOSTICSBODY CONTROL SYSTEM
1896 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check RAD No. 2, AM1, WSH, ECU±IG, Door No. 2 and ECU±B fuses.
CHECK:
Check for continuity of the RAD No. 2, AM1, WSH, ECU±IG, door No. 2 and ECU±B fuses.
OK:
Continuity
NG Replace defective fuse.
OK
2 Check voltage between terminals ACC, WIG, IG, BECU, S+B, BDR and GND1 of
body ECU connector.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals ACC, WIG, IG and GND1.
OK:
Voltage: 10 to 14 V
PREPARATION:
Turn the ignition switch OFF.
CHECK:
Measure the voltage between terminals BECU, BDR, S+B and GND1.
OK:
Voltage: 10 to 14 V
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1686).
NG