TOYOTA SEQUOIA 2001 Service Repair Manual

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

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.

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

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±

DI±1784
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1978 Author: Date:
2005 SEQUOIA (RM1146U) MPX2 e ±
(8 e ±)
W±L e ±Multiplex communica-
tion lineMultiplex communication circuit±
KL e LSWE
(22 e 9)LG±B e W±BDoor key lock and un-
lock switch (LOCK)Door key lock and unlock switch LOCKBelow 1 V
KL e LSWE
(22 e 9)LG±B e W±BDoor key lock and un-
lock switch (LOCK)Door key lock and unlock switch OFF or UNLOCK10 to 14 V
KUL e LSWE
(10 e 9)LG±R e
W±BDoor key lock and un-
lock switch (UNLOCK)Door key lock and unlock switch UNLOCKBelow 1 V
KUL e LSWE
(10 e 9)LG±R e
W±BDoor key lock and un-
lock switch (UNLOCK)Door key lock and unlock switch OFF or LOCK10 to 14 V
LSWD e LSWE
(24 e 9)R±Y e W±BDoor unlock detection
switchDriver door is locked10 to 14 V
LSWD e LSWE
(24 e 9)R±Y e W±BDoor unlock detection
switchDriver door is unlockedBelow 1 V
WLSW e GND
(7 e 13)R±L e W±BWindow lock switchDriver side window lock switch position UNLOCKBelow 1 V
WLSW e GND
(7 e 13)R±L e W±BWindow lock switchDriver side window lock switch position LOCK10 to 14 V
SGND e Body Ground
(4 e Body Ground)W±B e Body
GroundGroundAlwaysBelow 1 V
LSWE e Body Ground
(9 e Body Ground)W±B e Body
GroundGroundAlwaysBelow 1 V
DM+R (*1) e GND
(15 e 13)L±W e W±BOuter mirror motorRemote control mirror is not operatedBelow 1 V
DM+R (*1) e GND
(15 e 13)L±W e W±BOuter mirror motorRemote control mirror is operated DOWN or RIGHT10 to 14 V
DMVR (*1) e GND
(17 e 13)BR±B e
W±BOuter mirror motorRemote control mirror is not operatedBelow 1 V
DMVR (*1) e GND
(17 e 13)BR±B e
W±BOuter mirror motorRemote control mirror is operated UP or RIGHT10 to 14 V
DMHR (*1) e GND
(16 e 13)BR±R e
W±BOuter mirror motorRemote control mirror is not operatedBelow 1 V
DMHR (*1) e GND
(16 e 13)BR±R e
W±BOuter mirror motorRemote control mirror is operated LEFT or DOWN10 to 14 V
DVC (*1) e LE1
(11 e 12)BR±W e L±ROuter mirror position
sensorIgnition switch OFFBelow 1 V
DVC (*1) e LE1
(11 e 12)BR±W e L±ROuter mirror position
sensorIgnition switch ON4.8 to 5.2 V
VSSR (*1) e LE1
(18 e 12)BR±Y e L±ROuter mirror position
sensorIgnition switch ON, outer mirror position full DOWN0.5 to 1.8 V
VSSR (*1) e LE1
(18 e 12)BR±Y e L±ROuter mirror position
sensorIgnition switch ON, outer mirror position full UP3.5 to 4.5 V
HSSR (*1) e LE1
(19 e 12)L±B e L±ROuter mirror position
sensorIgnition switch ON, outer mirror position full OUT0.5 to 1.8 V
HSSR (*1) e LE1
(19 e 12)L±B e L±ROuter mirror position
sensorIgnition switch ON, outer mirror position full IN3.5 to 4.5 V
*1: w/ Driving position memory

DIDEM±01
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1785
1979 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
According to the DATA LIST displayed by the hand±held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
of the methods to shorten labor time.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) 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 SW
Driver door power win-
dow auto SW signal/
ON or OFFON: Driver door power window auto UP/DOWN SW is ON
OFF: Driver door power window auto UP/DOWN SW is
OFF
±
P P/W AUTO SW
Driver door power win-
dow auto SW signal/
ON or OFFON: Driver door power window auto UP/DOWN SW is ON
OFF: Driver door power window auto UP/DOWN SW is
OFF
±
LIMIT SWJam protection limit SW/
ON or OFFON: Window is almost fully open
OFF: Window is open*1
LOCK POS SWLock position SW signal/
ON or OFFON: Door lock is in unlock position
OFF: Door lock is in lock position±
*1: If the jam protection limit switch is turned ON, the jam protection function will stop.
Even if the switch is not turned ON when the windows are almost fully open, the window will not fully close
as jam protection operates at upper window positions during automatic±up operation.
HINT:
The following data list can be used when the power window is operated through manual±up operation during
the ACTIVE TEST.
ItemMeasurement Item/Display (Range)Normal ConditionDiagnostic Note
GLASS POS±1/4
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
fully open and 1/4 open*2
GLASS POS±2/4
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
1/4 open and 2/4 open*2
GLASS POS±3/4
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
2/4 open and 3/4 open*2
GLASS POS±OPEN
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
3/4 open and fully open*2
HINT:
*2: If the CAUTION is displayed without applying any resistance in each range, there must be something
caught somewhere in that range.
ItemMeasurement Item/Display (Range)Normal ConditionDiagnostic Note
UP/DOOR KEY (*1)
Driver door key lock and unlock switch
linked window open and close/AVAIL or
NOT AVLAVAIL: Key±linked open and close SET
NOT AVL: Key±linked open and close UN-
SET
±
DOWN/DOOR KEY (*1)
Driver door key lock and unlock switch
linked window open and close/AVAIL or
NOT AVLAVAIL: Key±linked open and close SET
NOT AVL: Key±linked open and close UN-
SET
±

DI±1786
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1980 Author: Date:
2005 SEQUOIA (RM1146U)
*1: When the ignition key is not in the key cylinder and the back door is locked, turning and holding the key
in the back door key cylinder in the lock position for 1.5 seconds or more activates the driver door ECU to
operate the power window motor and close the power window.
Similarly, turning and holding the key in the back door key cylinder in the unlock position for 1.5 seconds or
more when the back door is unlocked will open the power window.
ItemMeasurement Item/Display (Range)Normal ConditionDiagnostic Note
MIR POS SEN VVertical mirror position/Min.: 0, Max.: 5Within range from 0 to 5 V±
MIR POS SEN HVertical mirror position/Min.: 0, Max.: 5Within range from 0 to 5 V±
2. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relay, actuator and so on to operate
without removal. Performing the ACTIVE TEST as the first step of troubleshooting is one of the methods to
shorten labor time.
It is possible to display the DATA 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 ACTIVE TEST.
D±DOOR:
ItemTest DetailsDiagnostic Note
P/W UP/DOWNDrive the P/W Motor UP/DOWN
During this ACTIVE TEST, jam protection, caught
detection can be monitored.
(Refer to the DATA LIST for details)
MIRR UP/DOWNMirror motor vertical operation UP/OFF/DOWN±
MIRR RIGHT/LEFTMirror motor horizontal operation RIGHT/OFF/
LEFT±

DI1PA±08
I28392
Power Window Master Switch
 Driver Door ECU
 Power Window Switch
 Door Lock Control Switch
 Window Lock Switch
Door Courtesy LightDoor Lock Assembly
 Door Lock Motor
 Door Unlock Detection
Switch Power Window Motor
 Pulse Sensor
 Limit Switch
Door Courtesy Light Switch
Driver door ECU is the same with power window master switch.
Door Key Lock and
Unlock Switch Remote Control Mirror
(w/ Driving Position Memory)
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1787
1981 Author: Date:
2005 SEQUOIA (RM1146U)
PARTS LOCATION

DI1PD±10
I28457
F10
Fusible Link Block
Engine Room J/B
Sub J/B No. 3
SHORT PIN
D22
Driver Door ECU
SIG 21 A
W±LB±R 9
IB1 J/C
W±R ECU±B
Battery
IEB±R A
B±RInstrument Panel J/B
ECU±IG 4
1FI18
Ignition SW
IG1 AM1 4
1C
B±Y21
6
1C AM1
ALT
L±WPWR No. 12 1 1
1L
1
1F 58
W
4
B
13
IB1L±W
BDR
CPUB
GND Instrument Panel J/B
2
1E 3
1J 8
2C 1
2D
W±R 1
3A 1
3C
W±R1
IB1W±R
23 B
A J8
J/C
W±BJ/C
D
J6F
J7W±B
13 25 B±RJ37 J38
Sub J/B No. 3
3A 3C88 DI±1788
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1982 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Power source circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the driver door ECU.
WIRING DIAGRAM