2001 TOYOTA SEQUOIA O2 sensor

DI±1754
± DIAGNOSTICSBODY CONTROL SYSTEM
1948 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check automatic light control sensor.
When using hand±held tester:
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch and hand±held tester main switch ON.
BODY ECU:
ItemMeasurement Item/Display
(Range)Normal ConditionDiagnostic Note
ILLUMINATE RATEIllumination rate information/
MIN: 0 MAX: 99.99Condition value will be displayed
Normal value: 0.8 ms to 22.0 ms±
CHECK:
The illumination rate value should change within the following range such as when the light sensor is ex-
posed to light or covered by hand.
OK:
0.8 ms to 22.0 ms
HINT:
Time needed for the light sensor to generate one cycle of frequency according to the brightness.
When not using hand±held tester (See page BE±27):
NG Replace automatic light control sensor.
OK
2 Check harness and connector between automatic light control sensor and body
ECU (See page IN±35).
NG Repair or replace wire harness or connector.
OK
Proceed to next inspection shown in problem
symptoms table (See page DI±1686).

DI±1774
± DIAGNOSTICSBODY CONTROL SYSTEM
1968 Author: Date:
2005 SEQUOIA (RM1146U)
Glass breakage sensor ECU circuit
CIRCUIT DESCRIPTION
The glass breakage sensor microphone detects the sound of metal (and other) objects striking the windows
and outputs a signal to the glass breakage sensor ECU. Sound of breaking window glass is amplified (fixed
frequency) by the resonator provided in front of the microphone.
The glass breakage sensor ECU receives a signal from the glass breakage sensor microphone. If the signal
matches the specification, the ECU outputs the glass breakage signal to the body ECU.
The body ECU receives the signal from the glass breakage sensor ECU and outputs a warning.
DID9E±01

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

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

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).

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

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

DI1PB±09
I18633
D22
DRIVER DOOR ECU :
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1783
1977 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECU
Symbols (Terminal No.)Wiring ColorTerminal DescriptionConditionSpecified Condi-
tion
CPUB e GND
(23 e 13)W±R e W±BBatteryAlways10 to 14 V
BDR e GND
(25 e 13)L±W e W±BBatteryAlways10 to 14 V
CTYB e DCYL
(5 e 6)R e R±WCourtesy switch driver
sideDriver's door closed10 to 14 V
CTYB e DCYL
(5 e 6)R e R±WCourtesy switch driver
sideDriver's door openBelow 1 V
SIG e GND
(21 e 13)B±R e W±BIgnition switchIgnition switch ON10 to 14 V
GND e Body Ground
(13 e Body Ground)W±B e Body
GroundGroundAlwaysBelow 1 V
PLS e SGND
(3 e 4)L±R e W±BPower window pulse
sensorPower window is operatedPulse
Generation
PLS e SGND
(3 e 4)L±R e W±BPower window pulse
sensorPower window is not operated (Switch ON)Below 1 V
PLS e SGND
(3 e 4)L±R e W±BPower window pulse
sensorPower window is not operated (Switch OFF)10 to 14 V
LMT e SGND
(2 e 4)L±Y e W±BPower window limit
switchDriver's door window not fully closed positionBelow 1 V
LMT e SGND
(2 e 4)L±Y e W±BPower window limit
switchDriver's door window fully closed position10 to 14 V
DU e DDN
(1 e 14)R e GPower window motor
(UP)Ignition switch ON and driver's window switch OFFBelow 1 V
DU e DDN
(1 e 14)R e GPower window motor
(UP)Ignition switch ON and driver's window switch UP10 to 14 V
DDN e DU
(14 e 1)G e RPower window motor
(DOWN)Ignition switch ON and driver's window switch OFFBelow 1 V
DDN e DU
(14 e 1)G e RPower window motor
(DOWN)Ignition switch ON and driver's window switch DOWN10 to 14 V
MPX1 e ±
(20 e ±)G±B e ±Multiplex communica-
tion lineMultiplex communication circuit±